PSN / Parsons Corporation - Depositi SEC, Relazione annuale, dichiarazione di delega

Parsons Corporation
US ˙ NYSE ˙ US70202L1026

Statistiche di base
LEI 549300ZXH0VRBSEPX752
CIK 275880
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Parsons Corporation
SEC Filings (Chronological Order)
Questa pagina fornisce un elenco completo e cronologico dei depositi SEC, esclusi i documenti di proprietà che forniamo altrove.
August 6, 2025 EX-99.1

Parsons Reports Strong Second Quarter 2025 Results

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Strong Second Quarter 2025 Results Q2 2025 Financial Highlights ▪ Q2 revenue of $1.6 billion decreased 5% year-over-year and 9% on an organic basis ▪ Revenue growth of 13% excluding confidential contract; 8% on an organic basis ▪ Q2 net income of $55 million decreased $14 million year-over-year, includes $2 million of

August 6, 2025 8-K

FORM 8-K Item 2.02 Results of Operations and Financial Condition. Item 9.01 Financial Statements and Exhibits.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 06, 2025 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fil

August 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

June 5, 2025 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 5, 2025 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

June 5, 2025 EX-10.1

Term Loan Credit Agreement, dated as of June 5, 2025, among Parsons Corporation as borrower, the several subsidiary guarantors, the several banks and other financial institutions party thereto as term loan lenders, and Bank of America, N.A., as administrative agent for the term loan lenders.

Exhibit 10.1 EXECUTION VERSION Published CUSIP Number: Deal: 70202HAH4 Term A Facility: 70202HAJ0 TERM LOAN CREDIT AGREEMENT dated as of June 5, 2025 among PARSONS CORPORATION, as the Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as the Administrative Agent, JPMORGAN CHASE BANK, N.A., as Syndication Agent, U.S. BANK NATIONAL ASSOCIATION, as

June 5, 2025 EX-10.2

Revolving Credit Agreement, dated as of June 5, 2025, among Parsons Corporation, the subsidiary guarantors, the several banks and other financial institutions party thereto as the revolving lenders, and Bank of America, N.A., as administrative agent for the revolving lenders.

EX-10.2 Exhibit 10.2 EXECUTION VERSION Published CUSIP Number: Deal: 70202HAF8 Revolving Facility: 70202HAG6 REVOLVING CREDIT AGREEMENT dated as of June 5, 2025 among PARSONS CORPORATION, as the Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as the Administrative Agent, the Swingline Lender and an L/C Issuer, JPMORGAN CHASE BANK, N.A., as Syn

June 2, 2025 8-K

FORM 8-K Item 8.01 Other Events. Item 9.01 Financial Statements and Exhibits.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 02, 2025 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

April 30, 2025 EX-99.1

Parsons Reports Record First Quarter 2025 Results

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Record First Quarter 2025 Results Q1 2025 Financial Highlights ▪ Record Q1 revenue of $1.6 billion increases 1% year-over-year; decreases 2% on an organic basis ▪ 11% revenue growth excluding confidential contract; increases 7% on an organic basis ▪ Record Q1 net income of $66 million increases $26 million year-over-ye

April 30, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 30, 2025 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

April 30, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

April 16, 2025 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 16, 2025 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 24, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 20, 2025 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 24, 2025 EX-99.1

Parsons’ Board Approves $250 Million Share Repurchase Authorization

Exhibit 99.1 Media Contact: Bernadette Miller Mobile: +1 980.253.9781 [email protected] Investor Relations Contact: Dave Spille +1 703.775.6191 [email protected] Parsons’ Board Approves $250 Million Share Repurchase Authorization CHANTILLY, VA., (March 24, 2025) – Parsons Corporation (NYSE: PSN) announced today that its board of directors has increased the company’s stock repurch

March 5, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defini

February 19, 2025 EX-21.1

List of Subsidiaries of the Registrant

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/International, Inc. Texas Amplus Corporation BCC Engineering Acquisition Corporation BCC Engineering Holding Corporation BCC Engineering, LLC Black Signal Technologies, LLC Virginia Delaware Delaware Florida Delaware Blackhorse, A Parsons Company Blue Ridge Envisioneering, Inc. Delaware Virginia Bonifica S.P.

February 19, 2025 EX-10.71

Eleventh Amendment To The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement)

Exhibit 10.71 ELEVENTH AMENDMENT TO THE PARSONS CORPORATION RETIREMENT SAVINGS PLAN (2017 AMENDMENT AND RESTATEMENT) The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement), as previously amended (the “Plan”) is hereby amended as follows: 1. Section 2.14.2.8 is hereby amended to read as follows: 2.14.2.8. for periods prior to June 1, 2022, an Employee of Parsons Government

February 19, 2025 EX-99.1

Parsons Reports Record Results Since IPO for the Fourth Quarter and Fiscal Year 2024

Exhibit 99.1 Parsons* Third quarter 2022 earnings press release Parsons Reports Record Results Since IPO for the Fourth Quarter and Fiscal Year 2024 Fourth Quarter Financial Highlights ▪ Record revenue of $1.7 billion increases 16% year-over-year ▪ Organic revenue growth of 14%; eighth consecutive quarter of double-digit organic growth ▪ Record net income of $54 million increases 21% ▪ Record adju

February 19, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-07782 PARSONS CORPORA

February 19, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2025 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

October 30, 2024 EX-99.1

Parsons Reports Record Results Since IPO for the Third Quarter of 2024

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Record Results Since IPO for the Third Quarter of 2024 Q3 2024 Financial Highlights ▪ Record revenue of $1.8 billion increases 28% year-over-year ▪ Record organic revenue growth of 26%, including six consecutive quarters with year-over-year organic growth above 20% ▪ Record net income increases 52% to $72 million ▪ Rec

October 30, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2024 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

October 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

July 31, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2024 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

July 31, 2024 EX-10.2

Seventh Amendment To The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement

Exhibit 10.2 Seventh Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (as amended, the “Plan”) is hereby amended as follows, in each case with respect to all diversifications elected or processed on or after August 1, 2024: 1. Section 7.5(a) of the Plan are hereby amended and restated to r

July 31, 2024 EX-99.1

Parsons Reports Record Results Since IPO for the Second Quarter of 2024

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Record Results Since IPO for the Second Quarter of 2024 Q2 2024 Financial Highlights ▪ Record revenue of $1.7 billion increases 23% year-over-year ▪ Strong second quarter organic revenue growth of 22%, including five consecutive quarters with year-over-year organic growth above 20% ▪ Record net income of $69 million in

July 31, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

July 31, 2024 EX-10.1

Tenth Amendment To The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement)

Exhibit 10.1 TENTH AMENDMENT TO THE PARSONS CORPORATION RETIREMENT SAVINGS PLAN (2017 AMENDMENT AND RESTATEMENT) The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement), as previously amended (the “Plan”) is hereby amended as follows effective as of July 1, 2024, unless otherwise indicated below: 1. A new Section 1.23 is hereby added to the Plan to read as follows: 1.22 Me

May 1, 2024 EX-4.1

Indenture, dated as of February 26, 2024, between Parsons Corporation and U.S. Bank Trust Company, National Association.

Exhibit 4.1 Execution Version PARSONS CORPORATION AND U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of February 26, 2024 2.625% Convertible Senior Notes due 2029 Exhibit 4.1 TABLE OF CONTENTS Page Article 1 Definitions Section 1.01. Definitions 1 Section 1.02. References to Interest 14 Article 2 Issue, Description, Execution, Registration and Exchange of Notes Sectio

May 1, 2024 EX-10.1

Form of Confirmations of Base and Additional Call Option Transactions, between Parsons Corporation and Option Counterparties.

Exhibit 10.1 [DEALER] February [  ], 2024 To: Parsons Corporation 100 W. Walnut Street Corporate Treasury Pasadena, CA 91124 Re: [Base][Additional] Call Option Transaction The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the call option transaction entered into between [DEALER] (“Dealer”) [, represented by [AGENT] (“Agent”),] and Parsons Corpora

May 1, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

May 1, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 01, 2024 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

May 1, 2024 EX-99.1

Parsons Reports Strong First Quarter 2024 Results

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Strong First Quarter 2024 Results Q1 2024 Financial Highlights ▪ Record revenue of $1.5 billion increases 31% year-over-year ▪ Record first quarter organic revenue growth of 29%, including four consecutive quarters with organic growth above 20% ▪ Net loss of $107 million due to a $214 million pre-tax charge related to

April 22, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 16, 2024 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 5, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defini

February 27, 2024 EX-99.3

Bryce McDevitt

Exhibit 99.3 News Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille +1 703.775.6191 [email protected] Parsons Announces Pricing Of $700.0 Million Of Convertible Senior Notes Due 2029; Enters into Concurrent Capped Call Transactions to Offset Potential Dilution CHANTILLY, VA, February 22, 2024 — Parsons Corporation (NYSE: PSN) ann

February 27, 2024 EX-99.4

Parsons’ $800 Million Convertible Senior Note Offering

Exhibit 99.4 News Media Contact:  Bernadette Miller Mobile: +1 980.253.9781 [email protected] Investor Relations Contact: Dave Spille +1 703.775.6191 [email protected] Parsons’ $800 Million Convertible Senior Note Offering CHANTILLY, VA., (February 23, 2024) – Parsons Corporation (NYSE: PSN) announced today the full exercise of the $100 million option to purchase additional notes

February 27, 2024 EX-99.1

Illustrative Table of Potential Dilutive Impact of Convertible Senior Notes due 2029 and Call Spread

Exhibit 99.1 Illustrative Table of Potential Dilutive Impact of Convertible Senior Notes due 2029 and Call Spread UNAUDITED On February 26, 2024, we issued $800 million aggregate principal amount of 2.625% convertible senior notes due 2029 (the “Notes”). The initial conversion rate for the notes is 10.6256 shares of our common stock per $1,000 principal amount of notes (which is equivalent to an i

February 27, 2024 EX-99.2

Parsons Announces Offering Of $700.0 Million Of Convertible Senior Notes Due 2029

Exhibit 99.2 News Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille +1 703.775.6191 [email protected] Parsons Announces Offering Of $700.0 Million Of Convertible Senior Notes Due 2029 CHANTILLY, VA, February 21, 2024 — Parsons Corporation (NYSE: PSN) announced today that it intends to offer, subject to market and other conditions

February 27, 2024 EX-10.1

Form of Confirmations of Base and Additional Call Option Transactions, between Parsons Corporation and the Option Counterparties.

Exhibit 10.1 [DEALER] February [ ● ], 2024 To: Parsons Corporation 100 W. Walnut Street Corporate Treasury Pasadena, CA 91124 Re: [Base][Additional] Call Option Transaction The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the call option transaction entered into between [DEALER] (“Dealer”) [, represented by [AGENT] (“Agent”),] and Parsons Corpora

February 27, 2024 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2024 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

February 27, 2024 EX-4.1

Indenture, dated as of February 26, 2024, between Parsons Corporation and U.S. Bank Trust Company, National Association.

Exhibit 4.1 PARSONS CORPORATION AND U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of February 26, 2024 2.625% Convertible Senior Notes due 2029 TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS Section 1.01. Definitions 1 Section 1.02. References to Interest 14 ARTICLE 2 ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES Section 2.01. Designation and Amount

February 14, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-07782 PARSONS CORPORA

February 14, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2024 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

February 14, 2024 EX-21.1

List of Subsidiaries of the Registrant

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/International, Inc. Texas Amplus Corporation Virginia Blackhorse, A Parsons Company Delaware Bonifica S.P.A. Italy Braxton Science & Technology Group, LLC Colorado Braxton Technologies, LLC Colorado Bright Star For Engineering Services LLC Iraq, Republic of Checkmark Vehicle Safety Services, Inc. Delaware CMX

February 14, 2024 EX-19.3

Parsons Corporation Insider Trading Compliance Policy

Exhibit 19.3 Parsons Corporation INSIDER TRADING compliance POLICY CONTENTS Page I. SUMMARY 1 II. STATEMENT OF POLICIES PROHIBITING INSIDER TRADING 1 III. EXPLANATION OF INSIDER TRADING 2 IV. STATEMENT OF PROCEDURES PREVENTING INSIDER TRADING 7 V. ADDITIONAL PROHIBITED TRANSACTIONS 10 VI. RULE 10b5-1 TRADING PLANS, SECTION 16 AND RULE 144 12 VII. EXECUTION AND RETURN OF CERTIFICATION OF COMPLIANCE

February 14, 2024 EX-99.1

Parsons Reports Record Results Since IPO for the Fourth Quarter and Fiscal Year 2023

Exhibit 99.1 Parsons* Third quarter 2022 earnings press release Parsons Reports Record Results Since IPO for the Fourth Quarter and Fiscal Year 2023 Record Fourth Quarter Financial Highlights ▪ Revenue of $1.5 billion increases 35% year-over-year ▪ Organic revenue growth of 34% including at least 20% organic growth in both segments for the third consecutive quarter ▪ Net income of $45 million incr

February 5, 2024 SC 13G/A

PSN / Parsons Corporation / Newport Trust Co Passive Investment

SC 13G/A 1 newporttrust-psn123123a4.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* Parsons Corporation (Name of Issuer) Common Stock, $1.00 Par Value Per Share (Title of Class of Securities) 70202L102 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check t

December 21, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 18, 2023 PARSONS CORPORA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 18, 2023 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

November 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

November 1, 2023 EX-19.1

Parsons Corporation Executive Compensation Clawback Policy

Exhibit 19.1 PARSONS CORPORATION EXECUTIVE COMPENSATION CLAWBACK POLICY This Executive Compensation Clawback Policy (this “Policy”) is intended to discourage conduct detrimental to the growth of Parsons Corporation (the “Company”) by enabling the Company to recover or “clawback” incentive compensation paid or payable to the Chief Executive Officer, Chief Financial Officer and any other employee of

November 1, 2023 EX-99.1

Parsons Reports Strong Third Quarter 2023 Results

Exhibit 99.1 Parsons* Third quarter 2022 earnings press release Parsons Reports Strong Third Quarter 2023 Results Q3 2023 Financial Highlights ▪ Record revenue of $1.4 billion increases 25% year-over-year ▪ Record organic revenue growth of 23% including over 20% organic growth in both segments for the second consecutive quarter ▪ Net income of $47 million increases 60% ▪ Adjusted EBITDA of $128 mi

November 1, 2023 EX-19.2

Parsons Corporation Dodd-Frank Compliant Compensation Clawback Policy

Exhibit 19.2 PARSONS CORPORATION DODD-FRANK COMPLIANT COMPENSATION CLAWBACK POLICY The Board of Directors (the “Board”) of Parsons Corporation (the “Company”) believes that it is in the best interests of the Company and its shareholders to adopt this Dodd-Frank Clawback Policy (the “Policy”), which provides for the recovery of certain incentive compensation in the event of an Accounting Restatemen

November 1, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 01, 2023 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

August 2, 2023 EX-99.1

Parsons Reports Strong Second Quarter 2023 Results

Exhibit 99.1 parsons.com ©Parsons Corporation. All Rights Reserved. 2 Parsons* third quarter 2022 earnings press release Parsons Reports Strong Second Quarter 2023 Results Q2 2023 Financial Highlights ▪ Record revenue of $1.4 billion increases 34% year-over-year ▪ Record organic revenue growth of 23% driven by record organic growth in both segments ▪ Significant second quarter net income of $43 mi

August 2, 2023 EX-19.1

Parsons Corporation Insider Trading Compliance Policy

Exhibit 19.1 Sensitive Parsons Corporation INSIDER TRADING compliance POLICY CONTENTS Page I. SUMMARY 1 II. STATEMENT OF POLICIES PROHIBITING INSIDER TRADING 1 III. EXPLANATION OF INSIDER TRADING 2 IV. STATEMENT OF PROCEDURES PREVENTING INSIDER TRADING 7 V. ADDITIONAL PROHIBITED TRANSACTIONS 10 VI. RULE 10b5-1 TRADING PLANS, SECTION 16 AND RULE 144 12 VII. EXECUTION AND RETURN OF CERTIFICATION OF

August 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 02, 2023 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fil

August 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

June 26, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One)  ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR  TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-07782 A. Full title of the plan and address of the plan, if differe

May 3, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 03, 2023 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

May 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

May 3, 2023 EX-99

Parsons Reports Strong First Quarter 2023 Results

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Strong First Quarter 2023 Results Q1 2023 Financial Highlights ▪ Record quarterly revenue of $1.2 billion, representing a 24% increase year-over-year ▪ Record quarterly organic revenue growth of 12% driven by strength in both segments ▪ Record first quarter net income increases by 24% to $26 million ▪ Record first quar

April 20, 2023 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2023 Parsons Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 15, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2023 PARSONS CORPORATION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2023 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 15, 2023 EX-99.1

Parsons 2023 Investor Day to Highlight Growth Strategy and Strong End Market Opportunity

Exhibit 99.1 News Media Contact: Bryce McDevitt + 1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 703.775.6191 [email protected] Parsons 2023 Investor Day to Highlight Growth Strategy and Strong End Market Opportunity CENTREVILLE, Va. (MARCH 9, 2023) – Parsons Corporation (NYSE: PSN) announced today that it will host its Investor Day at the New York Stoc

March 6, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commi ssio n Only (as permitted by Rule

February 17, 2023 EX-10.64

Xator Purchase Agreement.

Exhibit 10.64 EQUITY PURCHASE AGREEMENT BY AND AMONG PARSONS GOVERNMENT SERVICES, INC., XATOR HOLDINGS CORPORATION, XATOR CORPORATION, THE PRINCIPAL SELLER STOCKHOLDERS LISTED ON ANNEX I ATTACHED HERETO, THE OTHER SELLER STOCKHOLDERS LISTED ON ANNEX I ATTACHED HERETO EXECUTING JOINDER AGREEMENTS and DAVID L. SCOTT, AS SELLER STOCKHOLDER REPRESENTATIVE DATED AS OF MAY 20, 2022 CONTENTS Page ARTICLE

February 17, 2023 EX-21.1

List of Subsidiaries of the Registrant.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/International, Inc. Texas Amplus Corporation Virginia Blackhorse Solutions, Inc. Delaware Bonifica S.P.A. Italy Braxton Science & Technology Group, LLC Colorado Braxton Technologies, LLC Colorado Bright Star For Engineering Services LLC Iraq, Republic of Chas. T. Main, Inc. Massachusetts Checkmark Vehicle Saf

February 17, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-07782 PARSONS CORPORA

February 17, 2023 EX-10.65

Seventh Amendment to The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement).

Exhibit 10.65 SEVENTH AMENDMENT TO THE PARSONS CORPORATION RETIREMENT SAVINGS PLAN (2017 AMENDMENT AND RESTATEMENT) The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement) (the “Plan”) is hereby amended as follows effective as of January 1, 2023, unless otherwise indicated below: 1. A new Section 1.18 is hereby added to the Plan to read as follows: 1.12Merger of the Amplus

February 17, 2023 EX-10.67

Sixth Amendment to The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement.

Exhibit 10.67 Sixth Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (as amended, the “Plan”) is hereby amended as follows: Effective January 1, 2020, notwithstanding section 8.4 of the Plan, a Participant or Beneficiary who would have been required to receive required minimum distribution

February 15, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2023 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

February 15, 2023 EX-99.1

Parsons Reports Record Revenue and Adjusted EBITDA Results for the Fourth Quarter and Fiscal Year 2022

Exhibit 99.1 FOURTH QUARTER and Full Year 2022 Earnings Press Release (Company Logo) FOURTH QUARTER and FULL YEAR 2022 Earnings Press Release Parsons Reports Record Revenue and Adjusted EBITDA Results for the Fourth Quarter and Fiscal Year 2022 Q4 2022 Financial Highlights ▪ Record fourth quarter revenue of $1.1 billion, representing total growth of 16% and organic growth of 9% ▪ Net income of $28

February 10, 2023 SC 13G/A

PSN / Parsons Corp / Newport Trust Co Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

January 20, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2023 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

January 20, 2023 EX-3.1

Second Amended and Restated Bylaws of Parsons Corporation.

Exhibit 3.1 PARSONS CORPORATION SECOND AMENDED AND RESTATED BYLAWS ARTICLE I. OFFICES Section 1.01 Registered Office. The registered office of Parsons Corporation (the “Corporation”) in the State of Delaware, and the name of the registered agent at such address, shall be as set forth in the Corporation’s certificate of incorporation, as the same may be amended and/or restated from time to time (th

November 2, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

November 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ?QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

November 2, 2022 EX-99.1

Parsons Reports Strong Third Quarter 2022 Results

Exhibit 99.1 Parsons* third quarter 2022 earnings press release Parsons Reports Strong Third Quarter 2022 Results Q3 2022 Financial Highlights ? Revenue increases 19% year-over-year to $1,134 million, includes organic growth of 11% ? Organic revenue growth driven by both segments: Critical Infrastructure 13% and Federal Solutions 10% ? Net income increases 53% to $30 million ? Adjusted EBITDA incr

September 19, 2022 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 14, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission

September 19, 2022 EX-99.2

FIRST AMENDMENT TO CREDIT AGREEMENT

Ex 99.2 EXECUTION VERSION FIRST AMENDMENT TO CREDIT AGREEMENT THIS FIRST AMENDMENT TO CREDIT AGREEMENT (this ?Agreement?) is entered into as of September 14, 2022 (the ?First Amendment Effective Date?) among Parsons corporation, a Delaware corporation (the ?Borrower?), the Guarantors party hereto, the Lenders party hereto, BANK OF AMERICA, N.A., as the Administrative Agent, the Swingline Lender an

September 19, 2022 EX-99.1

CREDIT AGREEMENT Dated as of September 14, 2022 parsons corporation, as the Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as the Administrative Agent jpmorgan chase bank, n.a., as Syndication A

Ex 99.1 EXECUTION VERSION Published CUSIP Number: 70202HAE1 CREDIT AGREEMENT Dated as of September 14, 2022 among parsons corporation, as the Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as the Administrative Agent jpmorgan chase bank, n.a., as Syndication Agent, U.S. bank national association, as Documentation Agent, and THE OTHER LENDERS

August 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

August 3, 2022 EX-99.1

Parsons Reports Second Quarter 2022 Results; Momentum and Strategic M&A Continues

Exhibit 99.1 SECOND QUARTER 2022 Earnings Press Release Parsons* second quarter 2022 earnings press release Parsons Reports Second Quarter 2022 Results; Momentum and Strategic M&A Continues Q2 2022 Financial Highlights ? Revenue increases 15% year-over-year to $1,009 million, includes organic growth of 9% ? Organic revenue growth driven by both segments: Federal Solutions 11% and Critical Infrastr

August 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ?QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

July 25, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): July 20, 2022 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organization) (

June 23, 2022 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-07782 A. Full title of the plan and address of the plan, if differe

May 27, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 20, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

May 27, 2022 EX-2.1

Equity Purchase Agreement, dated May 20, 2022, by and between Parsons Government Services, Inc. and Xator Holdings Corporation, Xator LLC (f/k/a Xator Corporation), David L. Scott and other parties thereto.

Exhibit 2.1 EQUITY PURCHASE AGREEMENT BY AND AMONG PARSONS GOVERNMENT SERVICES, INC., XATOR HOLDINGS CORPORATION, XATOR CORPORATION, THE PRINCIPAL SELLER STOCKHOLDERS LISTED ON ANNEX I ATTACHED HERETO, THE OTHER SELLER STOCKHOLDERS LISTED ON ANNEX I ATTACHED HERETO EXECUTING JOINDER AGREEMENTS and DAVID L. SCOTT, AS SELLER STOCKHOLDER REPRESENTATIVE DATED AS OF MAY 20, 2022 CONTENTS Page ARTICLE I

May 23, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 23, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

May 23, 2022 EX-99.1

Parsons to Acquire Xator Corporation Acquisition enhances critical infrastructure protection, cUAS, and biometric capabilities

Exhibit 99.1 Sensitive News FOR IMMEDIATE RELEASE Media Contact: Bryce McDevitt +1.703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1.571.655.8264 [email protected] Parsons to Acquire Xator Corporation Acquisition enhances critical infrastructure protection, cUAS, and biometric capabilities CENTREVILLE, VA (May 23, 2022) ? Parsons Corporation (NYSE:PSN) annou

May 4, 2022 EX-99.1

Parsons Reports First Quarter 2022 Results

Parsons* first quarter 2022 earnings press release Parsons Reports First Quarter 2022 Results Q1 2022 Financial Highlights ? Revenue increases 9% year-over-year to $949 million, includes organic growth of 6% ? Strong revenue driven by Critical Infrastructure organic growth of 8% and Federal Solutions organic growth of 4% ? Net income increases 129% to $21 million ? Adjusted EBITDA increases 8% to $74 million ? Book-to-bill ratio of 1.

May 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File Nu

May 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ?QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

May 4, 2022 EX-10.1

Fifth Amendment to The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement.

Exhibit 10.1 fifth Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (as amended, the ?Plan?) is hereby amended as follows, in each case, effective as of the dates indicated below: 1. Effective May 16, 2022, Sections 8.2(a)(2), 8.2(b)(2) and 8.2(c)(2) are hereby amended and restated in thei

April 18, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 14, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 2, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defini

February 23, 2022 EX-10.42

Form of Restricted Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and Charles L. Harrington.

Exhibit 10.42 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Restricted Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and Charles Harrington (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Inc

February 23, 2022 EX-10.32

Change in Control Severance Agreement, dated August 6, 2021, by and between Parsons Corporation and David Spille.

Exhibit 10.32 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this day of August 2021 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and David Spille (the ?Executive?). RECITALS The Compensation Committee of the Board of

February 23, 2022 EX-10.24

Parsons Corporation Employee Stock Purchase Plan Special Offering Period dated November 1, 2021.

Exhibit 10.24 PARSONS CORPORATION Employee Stock Purchase Plan OFFERING DOCUMENT FOR SPECIAL OFFERING PERIOD This document (this ?Offering Document?) is hereby adopted by the Compensation Committee of the Board of Directors of Parsons Corporation (the ?Company?), in its capacity as administrator of the Parsons Corporation Employee Stock Purchase Plan (the ?ESPP?) and is hereby incorporated by refe

February 23, 2022 EX-10.30

Change in Control Severance Agreement, dated August 6, 2021, by and between Parsons Corporation and George Ball.

Exhibit 10.30 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this day of August 2021 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and George Ball (the ?Executive?). RECITALS The Compensation Committee of the Board of D

February 23, 2022 EX-10.45

Form of Performance Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and Michael R. Kolloway.

Exhibit 10.45 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN PERFORMANCE STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Performance Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and Michael Kolloway (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Inc

February 23, 2022 EX-10.48

Form of Restricted Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and David Spille.

Exhibit 10.48 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Restricted Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and David Spille (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incentive

February 23, 2022 EX-21.1

List of Subsidiaries of the Registrant.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/International, Inc. Texas Amplus Corporation Virginia Argotek, Inc. Virginia Blackhorse Solutions, Inc. Delaware Bonifica S.P.A. Italy Braxton Science & Technology Group, LLC Colorado Braxton Technologies, LLC Colorado Bright Star For Engineering Services LLC Iraq, Republic of Centerra-Parsons Pacific, LLC Fl

February 23, 2022 EX-10.62

Form of Transition Agreement, dated February 2022, by and between Parsons Corporation and Charles L. Harrington.

Exhibit 10.62 CONFIDENTIAL TRANSITION AGREEMENT This Confidential Transition Agreement (the ?Agreement?) is entered into this day of February 2022 by and between Parsons Corporation (the ?Company?) and Charles L. Harrington (the ?Executive?). RECITALS: WHEREAS, the Company desires to offer the Executive the benefits set forth in this Agreement and to provide for the transition of Executive on the

February 23, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

February 23, 2022 EX-99.1

Three Months Ended

Exhibit 99.1 FOURTH QUARTER and Full Year 2021Earnings Press Release (Company Logo) Parsons Reports Fourth Quarter and Full Year 2021 Results Q4 2021 Financial Highlights ? Revenue of $951 million in the quarter and $1.9 billion in the second half of 2021, representing total and organic growth of 9% and 7% over the first half of 2021, respectively ? Net income of $29 million ? Adjusted EBITDA of $

February 23, 2022 EX-10.60

Fourth Amendment to the Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement, effective March 1, 2021.

Exhibit 10.60 Fourth Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (as amended, the ?Plan?) is hereby amended as follows, in each case, effective as of the dates indicated below: 1. With respect to initial distribution requests, effective March 1, 2021, Section 8.2 of the Plan is hereby

February 23, 2022 EX-10.41

Form of Performance Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and Charles L. Harrington.

Exhibit 10.41 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN PERFORMANCE STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Performance Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and Charles Harrington (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation I

February 23, 2022 EX-10.40

Form of Restricted Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and Carey A. Smith.

Exhibit 10.40 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Restricted Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and Carey Smith (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incentive

February 23, 2022 EX-10.39

Form of Performance Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and Carey A. Smith.

Exhibit 10.39 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN PERFORMANCE STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Performance Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and Carey Smith (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incentiv

February 23, 2022 EX-10.46

Form of Restricted Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and Michael R. Kolloway.

Exhibit 10.46 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Restricted Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and Michael Kolloway (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incen

February 23, 2022 EX-10.31

Change in Control Severance Agreement, dated August 6, 2021, by and between Parsons Corporation and Michael Kolloway.

Exhibit 10.31 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this day of August 2021 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and Michael Kolloway (the ?Executive?). RECITALS The Compensation Committee of the Board

February 23, 2022 EX-10.29

Change in Control Severance Agreement, dated August 9, 2021, by and between Parsons Corporation and Charles L. Harrington.

Exhibit 10.29 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this day of August 2021 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and Charles L. Harrington (the ?Executive?). RECITALS The Compensation Committee of the

February 23, 2022 EX-10.28

Change in Control Severance Agreement, dated August 6, 2021, by and between Parsons Corporation and Carey Smith.

Exhibit 10.28 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this day of August 2021 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and Carey Smith (the ?Executive?). RECITALS The Compensation Committee of the Board of D

February 23, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Ve the UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-07782 PARSONS

February 23, 2022 EX-10.47

Form of Performance Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and David Spille.

Exhibit 10.47 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN PERFORMANCE STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Performance Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and David Spille (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incenti

February 23, 2022 EX-10.10

Parsons Corporation Annual Incentive Plan Amendment dated January 1, 2021.

Exhibit 10.10 Amendments to Annual Incentive Plan PARSONS CORPORATION ANNUAL INCENTIVE PLAN Adopted January 1, 2012 Amended January 1, 2019 Amended January 1, 2020 Amended October 19, 2020 Amended January 1, 2022 TABLE OF CONTENTS Article 1 PREFACE1 Section 1.1 Effective Date and Term1 Section 1.2 Purpose of the Plan1 Article 2 DEFINITIONS1 Article 3 annual INCENTIVE OPPORTUNITY TARGETS AND AWARDS

February 23, 2022 EX-10.23

Parsons Corporation Prospectus to Employee Stock Purchase Plan dated November 1, 2021.

Exhibit 10.23 Prospectus This document constitutes part of a prospectus covering securities that we have registered under the Securities Act of 1933 PARSONS CORPORATION 2,000,000 Shares of Common Stock Issuable under the Parsons Corporation Employee Stock Purchase Plan This Prospectus relates to 2,000,000 shares of common stock (?Common Stock?) of Parsons Corporation (?Parsons? or the ?Company?).

February 23, 2022 EX-10.25

Parsons Corporation Employee Stock Purchase Plan List of Participating Companies.

Exhibit 10.25 Parsons Corporation Employee Stock Purchase Plan Participating Companies Section 423 Component Participating Companies Employee Jurisdictions Parsons Corporation (Corp) US Parsons Services Company (Corp) US Parsons Government Services, Inc. (Corp) US ?OG Systems, LLC (DE) US ?Williams Electric Company, Inc. (Corp) US ?Parsons Secure Solutions Inc. (Corp) US ?Polaris Alpha LLC (DE) US

February 23, 2022 EX-10.43

Form of Performance Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and George Ball.

Exhibit 10.43 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN PERFORMANCE STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Performance Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and George Ball (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incentiv

February 23, 2022 EX-10.33

Change in Control Severance Agreement, dated October 6, 2021, by and between Parsons Corporation and Matthew Ofilos.

Exhibit 10.33 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this day of October 2021 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and Matthew Ofilos (the ?Executive?). RECITALS The Compensation Committee of the Board

February 23, 2022 EX-10.44

Form of Restricted Stock Unit Award Amendment, dated July 19, 2021, by and between Parsons Corporation and George Ball.

Exhibit 10.44 AMENDMENT TO PARSONS CORPORATION INCENTIVE PLAN RESTRICTED STOCK UNIT AWARD This Amendment to Parsons Corporation Incentive Award Plan Restricted Stock Unit Award (?Amendment?) is made effective as of July 19, 2021, by and between Parsons Corporation (?Company?), and George Ball (?Employee?). WHEREAS, the Company and Employee are parties to that certain Parsons Corporation Incentive

February 11, 2022 SC 13G/A

PSN / Parsons Corp / Newport Trust Co Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

January 24, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 18, 2022 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

January 24, 2022 EX-99.1

Parsons Corporation Board Unanimously Elects Carey Smith as Chairwoman

Ex 99.1 News Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 571.655.8264 [email protected] Parsons Corporation Board Unanimously Elects Carey Smith as Chairwoman CENTREVILLE, VA (January 24, 2022) ? The board of directors of Parsons Corporation (NYSE: PSN) has unanimously elected Carey A. Smith as chairwoman, effective Apr

November 3, 2021 EX-99.1

Three Months Ended

Exhibit 99.1 PARSONS? THIRD QUARTER 2021 Earnings Press Release Parsons Reports Third Quarter 2021 Results Q3 2021 Financial Highlights ? Revenue of $956 million, representing sequential total and organic growth of 9% and 7%, respectively ? Net income of $19 million and margin of 2.0% ? Adjusted EBITDA of $84 million and margin of 8.8% ? Cash flow from operations of $77 million for the third quart

November 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ?QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

November 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

August 11, 2021 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

August 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

August 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ?QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

August 4, 2021 EX-99.1

Three Months Ended

EX-99.1 2 psn-ex9916.htm EX-99.1 Exhibit 99.1 PARSONS SECOND QUARTER 2021 Earnings Press Release Parsons Reports Second Quarter 2021 Results Q2 2021 Financial Highlights ▪ Revenue of $879 million ▪ Net income of $7 million and margin of 0.8% ▪ Adjusted EBITDA of $66 million and margin of 7.5% ▪ Cash flow from operations of $104 million, a company record for the second quarter ▪ Book-to-bill ratio

July 7, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 6, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

July 7, 2021 EX-99.1

Parsons Completes Acquisition of BlackHorse Solutions, Inc.

Exhibit 99.1 News FOR IMMEDIATE RELEASE Media Contact: Bryce McDevitt +1.703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1.571.655.8264 [email protected] Parsons Completes Acquisition of BlackHorse Solutions, Inc. CENTREVILLE, VA (July 6, 2021) ? Parsons Corporation (NYSE:PSN) announced today that it completed the previously announced acquisition of BlackHor

June 29, 2021 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 25, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

June 29, 2021 EX-99.1

CREDIT AGREEMENT Dated as of June 25, 2021 parsons corporation, as the Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as Administrative Agent, Swingline Lender and an L/C Issuer, THE LENDERS PAR

Exhibit 99.1 EXECUTION VERSION Published CUSIP Number: 70202HAA9 CREDIT AGREEMENT Dated as of June 25, 2021 among parsons corporation, as the Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as Administrative Agent, Swingline Lender and an L/C Issuer, and THE LENDERS PARTY HERETO jpmorgan chase bank, n.a., as Syndication Agent, U.S. bank nation

June 24, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

June 18, 2021 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-07782 A. Full title of the plan and address of the plan, if differe

June 10, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File N

June 10, 2021 EX-99.1

Parsons to Acquire BlackHorse Solutions, Inc. Acquisition enhances cyber, electronic warfare, and information dominance capabilities

News FOR IMMEDIATE RELEASE Media Contact: Jason Yaley +1.571.255.9122 [email protected] Investor Relations Contact: Dave Spille + 1.571.655.8264 [email protected] Parsons to Acquire BlackHorse Solutions, Inc. Acquisition enhances cyber, electronic warfare, and information dominance capabilities CENTREVILLE, VA (June 10, 2021) ? Parsons Corporation (NYSE:PSN) announced today that it has

May 5, 2021 EX-99.1

Parsons Reports First Quarter 2021 Results

Exhibit 99.1 Parsons Reports First Quarter 2021 Results Q1 2021 Financial Highlights ? Revenue of $875 million, includes $64 million of net adverse impact from COVID-19 and pass-through revenue ? Net income of $9 million and margin of 1.0% ? Adjusted EBITDA of $69 million and margin of 7.9% ? Book-to-bill ratio of 1.2x, driven by Critical Infrastructure book-to-bill ratio of 1.4x ? Total backlog i

May 5, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ?QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ?TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

May 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File Nu

April 23, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 20, 2021 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation) (Commission File

April 20, 2021 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 19, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

April 20, 2021 EX-99.1

Parsons Announces CEO Transition Harrington retires after 40 years; Smith to succeed

EX-99.1 Exhibit 99.1 News Media Contact: Bryce McDevitt + 1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 571.655.8264 [email protected] Parsons Announces CEO Transition Harrington retires after 40 years; Smith to succeed CENTREVILLE, VA (April 20, 2021) – The board of directors of Parsons Corporation (NYSE: PSN) has elected Carey Smith as chief executiv

March 25, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 22, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 11, 2021 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2021 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organization)

March 11, 2021 DEFR14A

- DEFR14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defi

March 10, 2021 DEF 14A

- DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

March 10, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

February 24, 2021 EX-10.19

Parsons Corporation Non-Employee Director Compensation Policy (as amended effective April 21, 2020).

Exhibit 10.19 Parsons Corporation Non-Employee Director Compensation Policy (As of April 21, 2020) Non-Employee Director Compensation Fee Frequency of Payment Annual Retainers and Meeting Fees Retainer Includes compensation for all the duties of a non-employee director, including attendance at regular, scheduled Board meetings and attendance by Committee members at Committee meetings held on regul

February 24, 2021 EX-21.1

List of Subsidiaries of the Registrant

EX-21.1 17 psn-ex21113.htm EX-21.1 Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/International, Inc. Texas Argotek, Inc. Virginia Bonifica S.P.A. Italy Braxton Science & Technology Group, LLC Colorado Braxton Technologies, LLC Colorado Bright Star For Engineering Services LLC Iraq, Republic of BSX Parsons LLC Delaware Centerra-Parsons Pacific, LLC Florid

February 24, 2021 EX-99.1

Parsons Reports Fourth Quarter and Full Year 2020 Results

Exhibit 99.1 Parsons Reports Fourth Quarter and Full Year 2020 Results Q4 2020 Highlights • Revenue of $964 million, includes $45 million of adverse impact from COVID-19 • Net income of $22 million and margin of 2.2%; adjusted EBITDA of $90 million and margin of 9.4% • Cash flow from operating activities of $176 million • Book-to-bill ratio of 1.1x for Q4 2020 and on a trailing 12-month basis • Cl

February 24, 2021 EX-10.29

Form of Equity Award Amendment Letter Agreement, dated August 10, 2020, by and between Parsons Corporation and Charles L. Harrington.

Exhibit 10.29 August 10, 2020 Chuck Harrington, Chairman and Chief Executive Officer Parsons Corporation Subject: Amendment to LTIP Awards Dear Chuck, Parsons Corporation (the ?Corporation?) has granted you the following long-term incentive awards (collectively, the ?LTIP Awards?) pursuant to the agreements listed below (the ?LTIP Award Agreements?). Unless otherwise defined herein, the terms defi

February 24, 2021 EX-10.30

Form of Equity Award Amendment Letter Agreement, dated August 10, 2020, by and between Parsons Corporation and Carey A. Smith

Exhibit 10.30 August 10, 2020 Carey Smith, President and Chief Operating Officer Parsons Corporation Subject: Amendment to LTIP Awards Dear Carey, Parsons Corporation (the ?Corporation?) has granted you the following long-term incentive awards (collectively, the ?LTIP Awards?) pursuant to the agreements listed below (the ?LTIP Award Agreements?). Unless otherwise defined herein, the terms defined

February 24, 2021 EX-10.39

Form of Employee Stockownership Trust Agreement, dated as of June 8, 2020, by and between Parsons Corporation and Newport Trust Company.

Exhibit 10.39 PARSONS CORPORATION EMPLOYEE STOCK OWNERSHIP TRUST AGREEMENT Effective December 31, 2005, Amended and Restated Effective , 2020 This Amended and Restated Trust Agreement, entered into by and between Parsons Corporation (the "Company" or "Sponsor") and Newport Trust Company (the "Trustee"), as successor trustee, is effective as of , 2020. WITNESSETH: 1.1WHEREAS, the Company and U.S. T

February 24, 2021 EX-10.28

Form of Equity Award Amendment Letter Agreement, dated August 10, 2020, by and between Parsons Corporation and George L. Ball

Exhibit 10.28 August 10, 2020 George Ball, Chief Financial Officer Parsons Corporation Subject: Amendment to LTIP Awards Dear George, Parsons Corporation (the ?Corporation?) has granted you the following long-term incentive awards (collectively, the ?LTIP Awards?) pursuant to the agreements listed below (the ?LTIP Award Agreements?). Unless otherwise defined herein, the terms defined in the applic

February 24, 2021 EX-10.22

Supplemental Executive Retirement Plan dated January 1, 1997

Exhibit 10.22 PARSONS CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN As Established Effective January 1, 1997 PARSONS CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN Parsons Corporation, a Delaware corporation with its principal place of business in California, (the ?Employer?) hereby establishes the Parsons Corporation Supplemental Executive Retirement Plan (SERP) for the benefit of the el

February 24, 2021 EX-10.15

Third Amendment to the 2019 Amendment and Restatement of Parsons Employee Stock Ownership Plan, effective January 1, 2021.

Exhibit 10.15 Third Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (as amended, the ?Plan?) is hereby amended as follows, in each case with respect to all diversifications elected or processed on or after January 1, 2021: 1. Sections 7.5(a) and 7.5(b) of the Plan are hereby amended and r

February 24, 2021 EX-10.31

Form of Equity Award Amendment Letter Agreement, dated August 10, 2020, by and between Parsons Corporation and Michael R. Kolloway.

Exhibit 10.31 August 10, 2020 Mike Kolloway, Chief Legal Officer Parsons Corporation Subject: Amendment to LTIP Awards Dear Mike, Parsons Corporation (the ?Corporation?) has granted you the following long-term incentive awards (collectively, the ?LTIP Awards?) pursuant to the agreements listed below (the ?LTIP Award Agreements?). Unless otherwise defined herein, the terms defined in the applicable

February 24, 2021 EX-10.23

First Amendment to the SERP effective January 1, 2020

Exhibit 10.23 First Amendment to the PARSONS CORPORATION EXECUTIVE RESTORATION PLAN (As Amended Through January 1, 2013) The Parsons Corporation Executive Restoration Plan (As Amended Through January 1, 2013) is hereby amended as follows, unless otherwise indicated: 1. Effective January 1, 2020 section 3.1 is hereby amended and restated to read: Section 3.1. Employer Contributions. The Employer sh

February 24, 2021 EX-10.3

First Amendment to the 2019 Amendment and Restatement of Parsons Employee Stock Ownership Plan, effective January 1, 2020

Exhibit 10.3 First Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (the ?Plan?) is hereby amended as follows, in each case effective as of January 1, 2020: 1. Section 7.2(b) of the Plan is hereby amended and restated to read as follows: (b)He or she shall be fully vested in the balance of

February 24, 2021 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-07782 PARSONS CORPORA

February 24, 2021 EX-10.32

Form of Equity Award Amendment Letter Agreement, dated August 10, 2020, by and between Parsons Corporation and Debra Fiori.

Exhibit 10.32 August 10, 2020 Debra Fiori, Chief People Officer Parsons Corporation Subject: Amendment to LTIP Awards Dear Debra, Parsons Corporation (the ?Corporation?) has granted you the following long-term incentive awards (collectively, the ?LTIP Awards?) pursuant to the agreements listed below (the ?LTIP Award Agreements?). Unless otherwise defined herein, the terms defined in the applicable

February 24, 2021 EX-10.8

Parsons Corporation Annual Incentive Plan dated January 1, 2020

Exhibit 10.8 PARSONS CORPORATION ANNUAL INCENTIVE PLAN Adopted January 1, 2012 Amended January 1, 2019 Amended January 1, 2020 TABLE OF CONTENTS Article 1 PREFACE1 Section 1.1 Effective Date and Term1 Section 1.2 Purpose of the Plan1 Article 2 DEFINITIONS1 Article 3 annual INCENTIVE OPPORTUNITY TARGETS AND AWARDS2 Section 3.1 Authority of the Compensation Committee2 Section 3.2 Determination of Pe

February 24, 2021 EX-10.9

Parsons Corporation Annual Incentive Plan Amended as of October 19, 2020.

Exhibit 10.9 PARSONS CORPORATION ANNUAL INCENTIVE PLAN Adopted January 1, 2012 Amended January 1, 2019 Amended January 1, 2020 Amended October 19, 2020 TABLE OF CONTENTS Article 1 PREFACE1 Section 1.1 Effective Date and Term1 Section 1.2 Purpose of the Plan1 Article 2 DEFINITIONS1 Article 3 annual INCENTIVE OPPORTUNITY TARGETS AND AWARDS2 Section 3.1 Authority of the Compensation Committee2 Sectio

February 24, 2021 EX-10.41

Form of Fifth Amendment to the Parsons Corporation Retirement Savings Plan.

Exhibit 10.41 FIFTH AMENDMENT TO THE PARSONS CORPORATION RETIREMENT SAVINGS PLAN (2017 AMENDMENT AND RESTATEMENT) The Parsons Corporation Retirement Savings Plan (2017 Amendment and Restatement) (the ?Plan?) is hereby amended as follows effective as of January 1, 2021, unless otherwise indicated below: 1. A new Section 1.16 is hereby added to the Plan to read as follows: 1.16Merger of OGSystems 40

February 24, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2021 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

February 24, 2021 EX-10.42

Form of Fourth Amendment to the 2019 Amendment and Restatement of Parsons Employee Stock Ownership Plan, effective March 1, 2021.

Exhibit 10.42 Fourth Amendment to the PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 Amendment and Restatement The Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement (as amended, the ?Plan?) is hereby amended as follows, in each case, effective as of the dates indicated below: 1. With respect to initial distribution requests, effective March 1, 2021, Section 8.2 of the Plan is hereby

February 11, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Parsons Corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

December 21, 2020 EX-99.1

Parsons Corporation appoints Carey Smith to Board of Directors

EX-99.1 Exhibit 99.1 News FOR IMMEDIATE RELEASE Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 571.655.8264 [email protected] Parsons Corporation appoints Carey Smith to Board of Directors CENTREVILLE, VA (December 21, 2020) – Parsons Corporation (NYSE: PSN) announced today that Carey Smith, president and chief operating o

December 21, 2020 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 17, 2020 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organizatio

November 19, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 19, 2020 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation) (Commission F

November 19, 2020 EX-99.1

Parsons Completes Acquisition of Braxton Science & Technology Group

EX-99.1 Exhibit 99.1 News FOR IMMEDIATE RELEASE Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 571.655.8264 [email protected] Parsons Completes Acquisition of Braxton Science & Technology Group CENTREVILLE, VA (Nov. 19, 2020) – Parsons Corporation (NYSE:PSN) announced today that it has completed its previously announced ac

November 4, 2020 EX-99.1

Parsons Delivers Strong Third Quarter 2020 Results

Exhibit 99.1 Parsons Delivers Strong Third Quarter 2020 Results Strategic Accomplishments • Announced Braxton acquisition that accelerates growth strategy in rapidly expanding space market • Awarded a $307 million contract with a classified customer • Won strategic directed energy contract Q3 2020 Financial Highlights • Net income of $41 million and margin of 4.0%; adjusted EBITDA of $101 million

November 4, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

November 4, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2020 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

November 4, 2020 EX-99.2

Parsons to Acquire Braxton Science & Technology Group Acquisition enhances space and cyber portfolios; Accretive to revenue growth and adjusted EBITDA margin

Exhibit 99.2 News FOR IMMEDIATE RELEASE Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 571.655.8264 [email protected] Parsons to Acquire Braxton Science & Technology Group Acquisition enhances space and cyber portfolios; Accretive to revenue growth and adjusted EBITDA margin CENTREVILLE, VA (Oct. 29, 2020) – Parsons Corpor

August 20, 2020 EX-99.3

[Signature Page Follows]

EX-99.3 Exhibit 99.3 [Dealer Name and Address] August 18, 2020 To: Parsons Corporation 100 W. Walnut Street Corporate Treasury Pasadena, CA 91124 From: [Dealer Name] Re: Additional Convertible Bond Hedge Transaction Ladies and Gentlemen: The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the above-referenced transaction entered into on the Trade Dat

August 20, 2020 EX-99.2

[Signature Page Follows]

EX-99.2 Exhibit 99.2 [Dealer Name and Address] August 17, 2020 To: Parsons Corporation 100 W. Walnut Street Corporate Treasury Pasadena, CA 91124 From: [Dealer Name] Re: Base Convertible Bond Hedge Transaction Ladies and Gentlemen: The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the above-referenced transaction entered into on the Trade Date spec

August 20, 2020 EX-99.6

Parsons Announces Offering Of $300.0 Million Of Convertible Senior Notes Due 2025

EX-99.6 Exhibit 99.6 News FOR IMMEDIATE RELEASE Media Contact: Bryce McDevitt +1 703.851.4425 [email protected] Investor Relations Contact: Dave Spille + 1 571.655.8264 [email protected] Parsons Announces Offering Of $300.0 Million Of Convertible Senior Notes Due 2025 CENTREVILLE, Va. (Aug. 17, 2020) – Parsons Corporation (NYSE: PSN) (the “Company”) announced today that it intends t

August 20, 2020 EX-99.1

Potential Quarterly Average Price(1)

EX-99.1 Exhibit 99.1 Illustrative Table of Potential Dilutive Impact of Convertible Senior Notes due 2025 and Call Spread UNAUDITED On August 20, we issued $400 million aggregate principal amount of 0.25% convertible senior notes due 2025 (the “Notes”). The initial conversion rate for the notes is 22.2913 shares of our common stock per $1,000 principal amount of notes (which is equivalent to an in

August 20, 2020 EX-99.5

[Signature Page Follows]

EX-99.5 Exhibit 99.5 [Dealer Name and Address] August 18, 2020 To: Parsons Corporation 100 W. Walnut Street Corporate Treasury Pasadena, CA 91124 From: [Dealer Name] Re: Additional Issuer Warrant Transaction Ladies and Gentlemen: The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the above-referenced transaction entered into on the Trade Date specif

August 20, 2020 EX-99.4

[Signature Page Follows]

EX-99.4 Exhibit 99.4 [Dealer Name and Address] August 17, 2020 To: Parsons Corporation 100 W. Walnut Street Corporate Treasury Pasadena, CA 91124 From: [Dealer Name] Re: Base Issuer Warrant Transaction Ladies and Gentlemen: The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the above-referenced transaction entered into on the Trade Date specified be

August 20, 2020 EX-4.1

Indenture, dated as of August 20, 2020, between Parsons Corporation and U.S. Bank National Association.

EX-4.1 Exhibit 4.1 Execution Copy PARSONS CORPORATION AND U.S. BANK NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of August 20, 2020 0.25% Convertible Senior Notes due 2025 TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS Section 1.01. Definitions 1 Section 1.02. References to Interest 14 ARTICLE 2 ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES Section 2.01. Designation and Am

August 20, 2020 EX-99.7

Parsons Announces Pricing Of $350.0 Million Of Convertible Senior Notes Due 2025; Enters into Concurrent Hedging and Warrant Transactions to Offset Potential Dilution

EX-99.7 Exhibit 99.7 Parsons Announces Pricing Of $350.0 Million Of Convertible Senior Notes Due 2025; Enters into Concurrent Hedging and Warrant Transactions to Offset Potential Dilution August 17, 2020 CENTREVILLE, VA, August 17, 2020 — Parsons Corporation (NYSE: PSN) (the “Company”) announced today the pricing of its private offering of $350.0 million aggregate principal amount of its 0.25% con

August 20, 2020 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 17, 2020 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fil

August 5, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

August 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2020 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

August 5, 2020 EX-99.1

Parsons Delivers Strong Second Quarter 2020 Operating Earnings and Cash Flow Results

Exhibit 99.1 Parsons Delivers Strong Second Quarter 2020 Operating Earnings and Cash Flow Results Q2 2020 Financial Highlights: • Revenue of $979 million includes $67 million of adverse impact from COVID-19 • Net income decreases 42% to $23 million and net income margin decreases to 2.4% • Adjusted EBITDA increases 20% to $91 million and adjusted EBITDA margin expands 160 basis points to 9.3% • Ca

June 26, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 24, 2020 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organization) (

June 25, 2020 11-K

- 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-07782 A. Full title of the plan and address of the plan, if differe

May 6, 2020 EX-99.1

Parsons Delivers Strong First Quarter 2020 Revenue Growth

Exhibit 99.1 Parsons Delivers Strong First Quarter 2020 Revenue Growth Q1 2020 Financial Highlights: • Revenue increases 7% year-over-year to $971 million • Strong revenue growth driven by Federal Solutions growth of 13%, including organic growth of 11% • Net income increases 33% to $13 million and net income margin increases to 1.3% • Adjusted EBITDA decreases 16% to $60 million and adjusted EBIT

May 6, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

May 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2020 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File Nu

May 1, 2020 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2020 PARSONS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation) (Commis

April 3, 2020 DEFA14A

PSN / Parsons Corporation DEFA14A - - DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 10, 2020 EX-4.1

Description of Capital Stock of Parsons Corporation.

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Description of Capital Stock General The following summary of the terms of the capital stock of Parsons Corporation (“we”, “us”, “our” and “Parsons”) is based upon our certificate of incorporation and bylaws. The summary is not complete, and is qualified in its entirety b

March 10, 2020 EX-21.1

List of Subsidiaries of the Registrant

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/International, Inc. Texas Argotek, Inc. Virginia Barton-Aschman Associates, Inc. of Ohio Ohio Bonifica S.P.A. Italy Bright Star For Engineering Services LLC Iraq, Republic of BSX Parsons LLC Delaware Centerra-Parsons Pacific, LLC Florida Chas. T. Main of Louisiana, Inc. Louisiana Chas. T. Main, Inc. Massachus

March 10, 2020 EX-99.1

Parsons Delivers Strong Fourth Quarter and Full Year 2019 Results on Solid Revenue Growth

Exhibit 99.1 Parsons Delivers Strong Fourth Quarter and Full Year 2019 Results on Solid Revenue Growth Q4 2019 Financial Highlights: • Revenue increases 12% from Q4 2018 to $1 billion, a company record • Strong revenue growth driven by Federal Solutions organic growth of 14% • Net income increases 84% to $14 million and net income margin increases 50 bps to 1.3% • Adjusted EBITDA increases 62% to

March 10, 2020 EX-10.14

Form of Restricted Stock Unit Agreement under the Parsons Corporation Incentive Award Plan (for Non-Employee Director Awards commencing in 2020).

Exhibit 10.14 PARSONS CORPORATION INCENTIVE award PLAN RESTRICTED STOCK UNIT AWARD [Q1 2020 SERVICE AWARD] [2020 ANNUAL MEETING SERVICE AWARD] Parsons Corporation (the “Company”), pursuant to its Incentive Award Plan (the “Plan”), hereby grants to the participant listed below (“Participant”), an award of Restricted Stock Units (“RSUs” or the “Award”) with respect to the number of shares of the Com

March 10, 2020 EX-10.19

Parsons Corporation Employee Stock Purchase Plan.

Exhibit 10.19 PARSONS CORPORATION EMPLOYEE STOCK PURCHASE PLAN Parsons Corporation, a corporation organized under the laws of the State of Delaware (the “Company”), hereby adopts the Parsons Corporation Employee Stock Purchase Plan (the “Plan”). The purposes of the Plan are as follows: (1)To assist Employees of the Participating Companies in acquiring a stock ownership interest in the Company. (2)

March 10, 2020 EX-10.16

Form of Restricted Stock Unit Agreement under the Parsons Corporation Incentive Award Plan (for Non-Employee Director Awards in 2019)

EX-10.16 7 psn-ex1016569.htm EX-10.16 Exhibit 10.16 PARSONS CORPORATION INCENTIVE award PLAN RESTRICTED STOCK UNIT AWARD [] AWARD Parsons Corporation (the “Company”), pursuant to its Incentive Award Plan (the “Plan”), hereby grants to the participant listed below (“Participant”), an award of Restricted Stock Units (“RSUs” or the “Award”) with respect to the number of shares of the Company’s Common

March 10, 2020 EX-10.32

Adam Taylor Separation Agreement

Exhibit 10.32 CONFIDENTIAL SEPARATION AGREEMENT AND RELEASE OF ALL CLAIMS This Confidential Separation Agreement and Release and Waiver of Claims ("Agreement") is entered into this 27th day of November, 2019 by and between Adam Taylor ("Employee") on the one hand, and Parsons Corporation and its parents, subsidiaries, affiliates, officers, directors, employees and agents on the other hand (collect

March 10, 2020 EX-10.17

Form of Restricted Stock Unit Agreement under the Parsons Corporation Incentive Award Plan (for Non-Employee Director Awards in 2019).

Exhibit 10.17 Parsons Corporation Non-Employee Director Compensation Policy (As of July 15, 2019) Non-Employee Director Compensation Fee Frequency of Payment Annual Retainers and Meeting Fees Retainer Includes compensation for all the duties of a non-employee director, including attendance at regular, scheduled Board meetings and attendance by Committee members at Committee meetings held on regula

March 10, 2020 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-07782 PARSONS CORPORA

March 10, 2020 EX-10.12

Form of Restricted Stock Unit Agreement under the Parsons Corporation Incentive Award Plan.

Exhibit 10.12 PARSONS CORPORATION INCENTIVE award PLAN RESTRICTED STOCK UNIT AWARD Parsons Corporation (the “Company”), pursuant to its Incentive Award Plan (the “Plan”), hereby grants to the participant listed below (“Participant”), an award of Restricted Stock Units (“RSUs” or the “Award”) with respect to the number of shares of the Company’s Common Stock (the “Shares”) indicated below. This Awa

March 10, 2020 EX-10.3

Second Amendment to the 2019 Amendment and Restatement of Parsons Employee Stock Ownership Plan, effective May 8, 2019.

Exhibit 10.3 PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 AMENDMENT AND RESTATEMENT TABLE OF CONTENTS Page Article I GENERAL 1 1.1 Nature of Plan1 1.2 Effective Date2 1.3 Defined Terms2 Article II DEFINITIONS 2 2.1 Account2 2.2 Affiliated Company2 2.3 Anniversary Date2 2.4 Approved Absence2 2.5 Beneficiary3 2.6 Board of Directors3 2.7 Break in Service3 2.8 Code4 2.9 Committee4 2.10 Company4 2.11 Com

March 10, 2020 DEF 14A

Parsons Corporation Employee Stock Purchase Plan (Appendix B to Proxy Statement of the Company filed March 10, 2020)

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 10, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 10, 2020 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

March 10, 2020 EX-10.15

Form of Restricted Stock Unit Agreement under the Parsons Corporation Incentive Award Plan (for Non-Employee Director Fee Deferral Awards commencing in 2020)

Exhibit 10.15 PARSONS CORPORATION INCENTIVE award PLAN RESTRICTED STOCK UNIT AWARD Q[] 20[] RETAINER FEE AWARD Parsons Corporation (the “Company”), pursuant to its Incentive Award Plan (the “Plan”), hereby grants to the participant listed below (“Participant”), an award of Restricted Stock Units (“RSUs” or the “Award”) with respect to the number of shares of the Company’s Common Stock (the “Shares

March 10, 2020 DEFA14A

PSN / Parsons Corporation DEFA14A - - DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

February 11, 2020 SC 13G

PSN / Parsons Corporation / Newport Trust Co Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

December 5, 2019 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 4, 2019 Parsons Corporation (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organization

November 14, 2019 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 11, 2019 Parsons Corporation (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organizatio

November 12, 2019 EX-10.2

Parsons Corporation Employee Stock Purchase Plan

Exhibit 10.2 PARSONS CORPORATION EMPLOYEE STOCK PURCHASE PLAN Parsons Corporation, a corporation organized under the laws of the State of Delaware (the “Company”), hereby adopts the Parsons Corporation Employee Stock Purchase Plan (the “Plan”). The purposes of the Plan are as follows: (1)To assist Employees of the Participating Companies in acquiring a stock ownership interest in the Company. (2)T

November 12, 2019 S-8

PSN / Parsons Corporation S-8 - - S-8

As filed with the Securities and Exchange Commission on November 12, 2019 Registration No.

November 12, 2019 10-Q

PSN / Parsons Corporation 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

November 12, 2019 EX-99.1

Parsons Delivers Strong Third Quarter Results; Momentum in Core Markets

Exhibit 99.1 Parsons Delivers Strong Third Quarter Results; Momentum in Core Markets Q3 2019 Financial Highlights: • Revenue of $1 billion, a company record • Net income of $57 million, driven by strong Federal Solutions performance • Adjusted EBITDA of $89 million, a company record • Adjusted EBITDA margin of 8.7% • Cash flow from operations of $179 million • Trailing 12-month book-to-bill ratio

November 12, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 12, 2019 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission F

October 18, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2019 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fi

August 13, 2019 EX-99.1

Parsons Delivers Strong Second Quarter 2019 Results; Momentum and Strategic M&A Continues

Exhibit 99.1 Parsons Delivers Strong Second Quarter 2019 Results; Momentum and Strategic M&A Continues Q2 2019 Financial Highlights: • Revenue of $990 million, 10% increase from second quarter 2018 • Net income of $40 million, impacted by IPO-related expenses and income tax adjustments • Adjusted EBITDA increases 45% to $76 million • Adjusted EBITDA margin increases 190 basis points to 7.7% • Trai

August 13, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2019 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission Fil

August 13, 2019 10-Q

PSN / Parsons Corporation 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

June 18, 2019 EX-99.1

Parsons Delivers Strong First Quarter 2019 Results; Reports Robust Bookings and Backlog Growth; and Bolsters Federal Solutions Business with OGSystems Acquisition

Exhibit 99.1 Parsons Delivers Strong First Quarter 2019 Results; Reports Robust Bookings and Backlog Growth; and Bolsters Federal Solutions Business with OGSystems Acquisition Q1 2019 Financial Highlights: • Revenue of $904 million, 20% increase from the first quarter of 2018 • Net income of $10 million, impacted by increased M&A-related intangible amortization expenses and IPO costs • Adjusted EB

June 18, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 18, 2019 PARSONS CORPORATION (Exact name of Registrant as Specified in Its Charter) Delaware 001-07782 95-3232481 (State or Other Jurisdiction of Incorporation) (Commission File

June 18, 2019 10-Q

PSN / Parsons Corporation 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-07782 Parsons Corporation (Exact Name of Registrant as Specified in its Charter) Delaware 95-3232481 (State or other jurisdiction of incorporation or organization) (I.

May 11, 2019 EX-3.1

Amended and Restated Certificate of Incorporation of Parsons Corporation

EX-3.1 Exhibit 3.1 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF PARSONS CORPORATION Parsons Corporation, a corporation organized and existing under and by virtue of the provisions of the General Corporation Law of the State of Delaware (the “DGCL”), DOES HEREBY CERTIFY: 1. That the name of this corporation is Parsons Corporation, and that this corporation was originally incorporated pursua

May 11, 2019 EX-3.2

Amended and Restated Bylaws of Parsons Corporation

EX-3.2 Exhibit 3.2 PARSONS CORPORATION AMENDED AND RESTATED BYLAWS ARTICLE I. OFFICES Section 1.01 Registered Office. The registered office of Parsons Corporation (the “Corporation”) in the State of Delaware, and the name of the registered agent at such address, shall be as set forth in the Corporation’s certificate of incorporation, as the same may be amended and/or restated from time to time (th

May 11, 2019 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Other Events

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 10, 2019 Parsons Corporation (Exact name of registrant as specified in its charter) Delaware 001-07782 95-3232481 (State or other jurisdiction of incorporation or organization

May 11, 2019 EX-99.1

Parsons Corporation Announces Closing of Initial Public Offering

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE Investor Relations Contact: Dave Spille Parsons Corporation 571.655.8264 [email protected] Media Contact: Brian Schaffer Prosek Partners [email protected] Parsons Corporation Announces Closing of Initial Public Offering CENTREVILLE, VA (May 10, 2019) – Parsons Corporation (“Parsons”), a provider of technology-driven solutions in the defense, inte

May 10, 2019 S-8

PSN / Parsons Corporation S-8 S-8

S-8 As filed with the Securities and Exchange Commission on May 10, 2019 Registration No.

May 9, 2019 424B4

18,518,500 Shares Parsons Corporation Common Stock

424B4 Table of Contents Filed Pursuant to Rule 424(b)(4) Registration No. 333-230833 PROSPECTUS 18,518,500 Shares Parsons Corporation Common Stock This is an initial public offering of shares of common stock of Parsons Corporation. All of the 18,518,500 shares of common stock are being sold by the company. Prior to this offering, there has been no public market for the common stock. The initial pu

May 3, 2019 8-A12B

Form 8-A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Parsons Corporation (Exact name of registrant as specified in its charter) Delaware 95-3232481 (State or incorporation or organization) (IRS Employer Identification No.) 5875 Trinity Parkway #300 C

May 3, 2019 CORRESP

PSN / Parsons Corporation CORRESP - -

CORRESP Parsons Corporation 5875 Trinity Parkway #300 Centreville, Virginia 20120 May 3, 2019 VIA EDGAR AND E-MAIL United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.

May 3, 2019 CORRESP

PSN / Parsons Corporation CORRESP - -

CORRESP May 3, 2019 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance 100 F Street, N.

May 2, 2019 CORRESP

PSN / Parsons Corporation CORRESP - -

CORRESP May 2, 2019 355 South Grand Avenue, Suite 100 Los Angeles, California 90071-1560 Tel: +1.

April 29, 2019 EX-21.1

List of Subsidiaries of the Registrant.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE REGISTRANT Subsidiary Registered Jurisdiction 3D/lnternational, Inc. Texas Argotek, Inc. Virginia Barton-Aschman Associates, Inc. of Ohio Ohio Bonifica S.P.A. Italy Bright Star For Engineering Services LLC Iraq, Republic of BSX Parsons LLC Delaware Centerra-Parsons Pacific, LLC Florida Chas. T. Main of Louisiana, Inc. Louisiana Chas. T. Main, Inc. Massachus

April 29, 2019 EX-10.2

2019 Amendment and Restatement of Parsons Employee Stock Ownership Plan

Exhibit 10.2 PARSONS EMPLOYEE STOCK OWNERSHIP PLAN 2019 AMENDMENT AND RESTATEMENT TABLE OF CONTENTS Page ARTICLE I GENERAL 1 1.1 Nature of Plan 1 1.2 Effective Date 2 1.3 Defined Terms 2 ARTICLE II DEFINITIONS 2 2.1 Account 2 2.2 Affiliated Company 2 2.3 Anniversary Date 2 2.4 Approved Absence 2 2.5 Beneficiary 2 2.6 Board of Directors 2 2.7 Break in Service 3 2.8 Business Day 4 2.9 Code 4 2.10 Co

April 29, 2019 S-1/A

As filed with the Securities and Exchange Commission on April 29, 2019.

Table of Contents As filed with the Securities and Exchange Commission on April 29, 2019.

April 29, 2019 CORRESP

PSN / Parsons Corporation CORRESP - -

CORRESP 355 South Grand Avenue, Suite 100 Los Angeles, California 90071-1560 Tel: +1.

April 29, 2019 EX-10.14

Change in Control Severance Agreement, dated as of April 5, 2019, by and between Parsons Corporation and Charles L. Harrington

Exhibit 10.14 PARSONS CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT THIS CHANGE IN CONTROL SEVERANCE AGREEMENT (this ?Agreement?) is made and entered into on this April 5, 2019 (the ?Effective Date?), by and between Parsons Corporation, a Delaware corporation (hereinafter referred to as the ?Company?) and Charles L. Harrington (the ?Executive?). RECITALS The Compensation Committee of the Board

April 29, 2019 EX-10.28

Fee Deferral Plan for Outside Directors of the Parsons Corporation

Exhibit 10.28 THE PARSONS CORPORATION BOARD OF DIRECTORS RESTATED FEE DEFERRAL PLAN FOR OUTSIDE DIRECTORS Restated February 27, 1996 Amended and Restated Effective January 1, 2009 as Approved by the Board of Directors on November 11, 2008 THE PARSONS CORPORATION BOARD OF DIRECTORS RESTATED FEE DEFERRAL PLAN FOR OUTSIDE DIRECTORS ARTICLE 1 PURPOSE The purpose of this Fee Deferral Plan for Outside D

April 29, 2019 EX-10.27

Form of Letter Agreement by and between Parsons Corporation and Newport Trust Company

Exhibit 10.27 NEWPORT TRUST COMPANY 570 Lexington Avenue, Suite 1903 New York, NY 10022 April [ ? ], 2019 Parsons Corporation 5875 Trinity Parkway #300 Centerville, VA 20120 Ladies and Gentlemen: Reference is hereby made to the Parsons Employee Stock Ownership Plan (2012 Amendment and Restatement) (as amended from time to time, the ?ESOP?) and the Parsons Corporation Employee Stock Ownership Trust

April 29, 2019 EX-10.11

Form of Restricted Stock Unit Agreement under the Parsons Corporation Incentive Award Plan.

Exhibit 10.11 RESTRICTED AWARD UNIT AGREEMENT Parsons Corporation THIS AGREEMENT, made as of January 1, 2019 (the ?Date of Grant?), between Parsons Corporation, a Delaware Corporation (the ?Company?), and (the ?Participant?). WHEREAS, the Company has adopted the Parsons Corporation Restricted Award Plan (as amended to date, the ?Plan?) in order to provide an additional incentive to certain employe

April 29, 2019 EX-10.12

Parsons Corporation Non-Employee Director Compensation Policy.

Exhibit 10.12 Parsons Corporation Non-Employee Director Compensation Policy (As of April 15, 2019) Non-Employee Director Compensation Fee Frequency of Payment Cash Compensation Retainer Includes compensation for all the duties of a non-employee director, including attendance at regular, scheduled Board meetings and attendance by Committee members at Committee meetings held on regular, scheduled Bo

April 29, 2019 EX-10.26

Form of Registration Rights Agreement by and between Parsons Corporation and Newport Trust Company.

Exhibit 10.26 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT, dated as of [ ? ], 2019, is entered into by and between Parsons Corporation, a Delaware corporation (the ?Company?), and Newport Trust Company, solely in its capacity as trustee of the Parsons Corporation Employee Stock Ownership Trust (the ?ESOP Trust?), the trust formed under the Parsons Employee Stock Ownership Plan

April 29, 2019 EX-3.2

Bylaws of Parsons Corporation (incorporated herein by reference to Exhibit 3.2 to the Registrant’s Registration Statement on Form S-1 (File No. 333-230833) filed on April 29, 2019)

Exhibit 3.2 PARSONS CORPORATION AMENDED AND RESTATED BYLAWS ARTICLE I. OFFICES Section 1.01 Registered Office. The registered office of Parsons Corporation (the ?Corporation?) in the State of Delaware, and the name of the registered agent at such address, shall be as set forth in the Corporation?s certificate of incorporation, as the same may be amended and/or restated from time to time (the ?Cert

April 29, 2019 EX-10.17

Form of Indemnification Agreement between Parsons Corporation and certain of its directors and officers

Exhibit 10.17 INDEMNIFICATION AND ADVANCEMENT AGREEMENT This Indemnification and Advancement Agreement (?Agreement?) is made as of [ ? ], 2019 by and between Parsons Corporation, a Delaware corporation (the ?Company?), and , [a member of the Board of Directors/ an officer] of the Company (?Indemnitee?). This Agreement supersedes and replaces any and all previous Agreements between the Company and

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