John Marshall Bancorp, Inc.
US ˙ NasdaqCM ˙ US47805L1017

SecurityJMSB / John Marshall Bancorp, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership917 shares
Latest Disclosed Value $ 18,596
Citigroup Inc reports 207.72% increase in ownership of JMSB / John Marshall Bancorp, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 917 shares of John Marshall Bancorp, Inc. (US:JMSB) valued at $18,597 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 298 shares of John Marshall Bancorp, Inc.. This represents a change in shares of 207.72% during the quarter. The current value of the position is $19,642 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 917 619 207.72 19 260.00 0.0000
2026-02-13 2025-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 298 151 102.72 6 150.00 0.0000
2025-11-10 2025-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 147 -4,096 -96.54 3 -97.44 0.0000
2025-08-11 2025-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 4,243 -4,435 -51.11 79 -45.45 0.0000
2025-05-12 2025-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 8,678 -972 -10.07 143 -25.91 0.0001
2025-02-12 2024-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 9,650 530 5.81 194 7.22 0.0001
2024-11-12 2024-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 9,120 6,309 224.44 180 267.35 0.0001
2024-08-12 2024-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 2,811 475 20.33 49 19.51 0.0000
2024-05-10 2024-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 2,336 558 31.38 42 2.50 0.0000
2024-02-09 2023-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 1,778 1,772 29,533.33 40 0.0000
2023-12-06 2023-09-30 13F/A-1 JOHN MARSHALL BANCORP COM 47805L101 6 -3,704 -99.84 0 -100.00 0.0000
2023-11-09 2023-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 6 -3,704 0 0.0000
2023-08-10 2023-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 3,710 3,708 185,400.00 75 0.0000
2023-05-11 2023-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 2 -78 -97.50 0 -100.00 0.0000
2023-02-09 2022-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 80 -95 -54.29 2 -50.00 0.0000
2022-11-10 2022-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 175 -540 -75.52 4 -75.00 0.0000
2022-08-10 2022-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 715 715 16 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.