FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership200,381 shares
Latest Disclosed Value $ 19,434,954
UBS Group AG reports 29.29% decrease in ownership of FORM / FormFactor, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 200,381 shares of FormFactor, Inc. (US:FORM) valued at $19,434,953 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 283,393 shares of FormFactor, Inc.. This represents a change in shares of -29.29% during the quarter. The current value of the position is $25,369,237 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-05 2026-03-31 13F FORMFACTOR COM 346375108 200,381 -83,012 -29.29 19,435 22.95 0.0005
2026-01-29 2025-12-31 13F FORMFACTOR COM 346375108 283,393 79,240 38.81 15,808 112.60 0.0005
2025-11-13 2025-09-30 13F FORMFACTOR COM 346375108 204,153 4,541 2.27 7,435 8.26 0.0012
2025-08-14 2025-06-30 13F FORMFACTOR COM 346375108 199,612 2,901 1.47 6,869 23.44 0.0012
2025-05-13 2025-03-31 13F FORMFACTOR COM 346375108 196,711 46,560 31.01 5,565 -15.77 0.0010
2025-02-14 2024-12-31 13F FORMFACTOR COM 346375108 150,151 64,198 74.69 6,607 67.11 0.0012
2024-11-14 2024-09-30 13F FORMFACTOR COM 346375108 85,953 40,199 87.86 3,954 42.76 0.0009
2024-08-14 2024-06-30 13F FORMFACTOR COM 346375108 45,754 -17,805 -28.01 2,769 -4.52 0.0007
2024-05-13 2024-03-31 13F FORMFACTOR COM 346375108 63,559 -61 -0.10 2,900 9.31 0.0007
2024-02-09 2023-12-31 13F FORMFACTOR COM 346375108 63,620 52,305 462.26 2,654 571.65 0.0008
2023-11-09 2023-09-30 13F FORMFACTOR COM 346375108 11,315 -22,951 -66.98 395 -66.30 0.0001
2023-08-11 2023-06-30 13F FORMFACTOR COM 346375108 34,266 21,888 176.83 1,173 197.46 0.0004
2023-05-12 2023-03-31 13F FORMFACTOR COM 346375108 12,378 -19,528 -61.20 394 -44.43 0.0001
2023-02-08 2022-12-31 13F FORMFACTOR COM 346375108 31,906 -6,784 -17.53 709 -26.91 0.0003
2022-11-10 2022-09-30 13F FORMFACTOR COM 346375108 38,690 8,263 27.16 970 -17.66 0.0004
2022-08-10 2022-06-30 13F FORMFACTOR COM 346375108 30,427 -8,665 -22.17 1,178 -28.30 0.0005
2022-05-16 2022-03-31 13F FORMFACTOR COM 346375108 39,092 -50,288 -56.26 1,643 -59.79 0.0005
2022-02-14 2021-12-31 13F FORMFACTOR COM 346375108 89,380 -64,637 -41.97 4,086 -28.93 0.0012
2021-11-15 2021-09-30 13F FORMFACTOR COM 346375108 154,017 6,721 4.56 5,749 7.06 0.0018
2021-08-13 2021-06-30 13F FORMFACTOR COM 346375108 147,296 81,642 124.35 5,370 81.30 0.0017
2021-05-12 2021-03-31 13F FORMFACTOR COM 346375108 65,654 -39,737 -37.70 2,962 -34.67 0.0010
2021-02-11 2020-12-31 13F FORMFACTOR COM 346375108 105,391 41,441 64.80 4,534 184.26 0.0015
2020-11-12 2020-09-30 13F FORMFACTOR COM 346375108 63,950 21,348 50.11 1,595 27.60 0.0006
2020-07-31 2020-06-30 13F FORMFACTOR COM 346375108 42,602 -149,320 -77.80 1,250 -67.58 0.0005
2020-05-01 2020-03-31 13F FORMFACTOR COM 346375108 191,922 92,012 92.09 3,856 48.59 0.0018
2020-02-14 2019-12-31 13F FORMFACTOR COM 346375108 99,910 38,898 63.75 2,595 128.03 0.0009
2019-11-14 2019-09-30 13F FORMFACTOR COM 346375108 61,012 44,433 268.01 1,138 339.38 0.0004
2019-08-14 2019-06-30 13F FORMFACTOR COM 346375108 16,579 13,067 372.07 259 362.50 0.0001
2019-05-14 2019-03-31 13F FORMFACTOR COM 346375108 3,512 -24,081 -87.27 56 -85.60 0.0000
2019-02-14 2018-12-31 13F FORMFACTOR COM 346375108 27,593 6,634 31.65 389 35.07 0.0002
2018-11-14 2018-09-30 13F FORMFACTOR COM 346375108 20,959 19,461 1,299.13 288 1,340.00 0.0001
2018-08-14 2018-06-30 13F FORMFACTOR COM 346375108 1,498 -2,282 -60.37 20 -61.54 0.0000
2018-05-15 2018-03-31 13F FORMFACTOR COM 346375108 3,780 -36,052 -90.51 52 -91.65 0.0000
2018-02-14 2017-12-31 13F FORMFACTOR COM 346375108 39,832 -834 -2.05 623 -9.05 0.0003
2017-11-14 2017-09-30 13F FORMFACTOR COM 346375108 40,666 38,113 1,492.87 685 2,109.68 0.0003
2017-11-14 2017-06-30 13F/A-1 FORMFACTOR COM 346375108 2,553 -78,685 -96.86 31 -96.78 0.0000
2017-08-14 2017-06-30 13F FORMFACTOR COM 346375108 2,553 -78,685 31
2017-11-14 2017-03-31 13F/A-1 FORMFACTOR COM 346375108 81,238 -11,046 -11.97 962 -6.96 0.0005
2017-05-12 2017-03-31 13F FORMFACTOR COM 346375108 81,238 -11,046 962
2017-02-14 2016-12-31 13F FORMFACTOR COM 346375108 92,284 92,284 0.00 1,034 0.0006
2016-11-14 2016-09-30 13F FORMFACTOR COM 346375108 0 -28,161 -100.00 0 -100.00
2016-08-12 2016-06-30 13F FORMFACTOR COM 346375108 28,161 6,961 32.83 254 64.94 0.0002
2016-05-12 2016-03-31 13F FORMFACTOR COM 346375108 21,200 -2,304 -9.80 154 -27.36 0.0001
2016-02-16 2015-12-31 13F FORMFACTOR COM 346375108 23,504 2,004 9.32 212 45.21 0.0001
2015-11-13 2015-09-30 13F FORMFACTOR COM 346375108 21,500 -500 -2.27 146 -27.72 0.0001
2015-08-14 2015-06-30 13F FORMFACTOR COM 346375108 22,000 -200 -0.90 202 2.54 0.0001
2015-05-14 2015-03-31 13F FORMFACTOR COM 346375108 22,200 18,020 431.10 197 447.22 0.0001
2015-02-17 2014-12-31 13F FORMFACTOR COM 346375108 4,180 4,180 36 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.