FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership43,653 shares
Latest Disclosed Value $ 2,435,018
Comerica Bank reports 47.36% decrease in ownership of FORM / FormFactor, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 43,653 shares of FormFactor, Inc. (US:FORM) valued at $2,434,964 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 82,929 shares of FormFactor, Inc.. This represents a change in shares of -47.36% during the quarter. The current value of the position is $5,526,688 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)
2026-01-29 2025-12-31 13F FORMFACTOR COM 346375108 43,653 -39,276 -47.36 2,435 -19.37 0.0097
2025-11-14 2025-09-30 13F FORMFACTOR COM 346375108 82,929 53,743 184.14 3,020 200.80 0.0114
2025-08-14 2025-06-30 13F FORMFACTOR COM 346375108 29,186 -251,807 -89.61 1,004 -87.37 0.0039
2025-05-14 2025-03-31 13F FORMFACTOR COM 346375108 280,993 250,940 834.99 7,949 501.29 0.0334
2025-02-14 2024-12-31 13F/A-1 FORMFACTOR COM 346375108 30,053 -754 -2.45 1,322 -6.70 0.0053
2025-02-14 2024-12-31 13F FORMFACTOR COM 346375108 30,053 -754 1,322 0.0044
2024-11-14 2024-09-30 13F FORMFACTOR COM 346375108 30,807 -1,482 -4.59 1,417 -27.48 0.0056
2024-08-15 2024-06-30 13F FORMFACTOR COMMON 346375108 32,289 -4,246 -11.62 1,954 17.22 0.0081
2024-05-16 2024-03-31 13F FORMFACTOR COMMON 346375108 36,535 -2,892 -7.34 1,667 1.40 0.0072
2024-02-14 2023-12-31 13F FORMFACTOR COMMON 346375108 39,427 -63 -0.16 1,645 19.22 0.0076
2023-11-21 2023-09-30 13F FORMFACTOR COMMON 346375108 39,490 39,490 1,380 0.0072
2023-08-22 2023-06-30 13F FORMFACTOR COM 346375108 0 -45,541 -100.00 0 -100.00
2023-01-26 2022-12-31 13F FORMFACTOR COM 346375108 45,541 -13,584 -22.98 1 -99.94 0.0089
2022-10-28 2022-09-30 13F FORMFACTOR COM 346375108 59,125 -7,365 -11.08 1,558 -39.71 0.0131
2022-08-02 2022-06-30 13F FORMFACTOR COM 346375108 66,490 109 0.16 2,584 3.82 0.0212
2022-04-27 2022-03-31 13F FORMFACTOR COM 346375108 66,381 122 0.18 2,489 -9.19 0.0181
2022-02-18 2021-12-31 13F FORMFACTOR COM 346375108 66,259 -4,192 -5.95 2,741 4.74 0.0202
2021-11-22 2021-09-30 13F FORMFACTOR COM 346375108 70,451 -2,215 -3.05 2,617 3.64 0.0158
2021-08-26 2021-06-30 13F FORMFACTOR COM 346375108 72,666 -5,800 -7.39 2,525 -34.28 0.0151
2021-04-28 2021-03-31 13F FORMFACTOR COM 346375108 78,466 -2,730 -3.36 3,842 -4.00 0.0229
2021-01-28 2020-12-31 13F FORMFACTOR COM 346375108 81,196 818 1.02 4,002 68.08 0.0254
2020-10-30 2020-09-30 13F FORMFACTOR COM 346375108 80,378 -312 -0.39 2,381 -6.19 0.0173
2020-07-31 2020-06-30 13F FORMFACTOR COM 346375108 80,690 6,944 9.42 2,538 52.25 0.0196
2020-05-01 2020-03-31 13F FORMFACTOR COM 346375108 73,746 2,603 3.66 1,667 -10.33 0.0153
2020-02-07 2019-12-31 13F FORMFACTOR COM 346375108 71,143 643 0.91 1,859 24.68 0.0141
2019-10-31 2019-09-30 13F FORMFACTOR COM 346375108 70,500 355 0.51 1,491 38.70 0.0118
2019-08-02 2019-06-30 13F FORMFACTOR COM 346375108 70,145 -3,725 -5.04 1,075 -20.72 0.0086
2019-05-02 2019-03-31 13F FORMFACTOR COM 346375108 73,870 2,379 3.33 1,356 31.65 0.0110
2019-02-06 2018-12-31 13F FORMFACTOR COM 346375108 71,491 145 0.20 1,030 15.99 0.0087
2018-11-01 2018-09-30 13F FORMFACTOR COM 346375108 71,346 -5,771 -7.48 888 -18.31 0.0072
2018-08-01 2018-06-30 13F FORMFACTOR COM 346375108 77,117 956 1.26 1,087 -0.55 0.0076
2018-05-01 2018-03-31 13F FORMFACTOR COM 346375108 76,161 76,161 -1.24 1,093 0.55 0.0078
2018-02-02 2017-12-31 13F FORMFACTOR COM 346375108 0 -69,182 -100.00 0 -100.00
2017-11-06 2017-09-30 13F FORMFACTOR COM 346375108 69,182 -5,347 -7.17 1,245 23.27 0.0090
2017-08-03 2017-06-30 13F FORMFACTOR COM 346375108 74,529 74,529 1,010 0.0076
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.