FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership22,286 shares
Latest Disclosed Value $ 2,162
Amalgamated Bank reports 0.65% decrease in ownership of FORM / FormFactor, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 22,286 shares of FormFactor, Inc. (US:FORM) valued at $2,161,519 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 22,431 shares of FormFactor, Inc.. This represents a change in shares of -0.65% during the quarter. The current value of the position is $2,821,519 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)
2026-05-08 2026-03-31 13F FORMFACTOR COM 346375108 22,286 -145 -0.65 2 100.00 0.0165
2026-02-05 2025-12-31 13F FORMFACTOR COM 346375108 22,431 11 0.05 1 0.0090
2025-10-29 2025-09-30 13F FORMFACTOR COM 346375108 22,420 411 1.87 1 0.0058
2025-08-04 2025-06-30 13F FORMFACTOR COM 346375108 22,009 -64 -0.29 1 0.0058
2025-04-25 2025-03-31 13F FORMFACTOR COM 346375108 22,073 -650 -2.86 1 -100.00 0.0053
2025-02-04 2024-12-31 13F FORMFACTOR COM 346375108 22,723 -61 -0.27 1 0.00 0.0082
2024-10-30 2024-09-30 13F FORMFACTOR COM 346375108 22,784 -795 -3.37 1 0.00 0.0086
2024-08-12 2024-06-30 13F FORMFACTOR COM 346375108 23,579 -672 -2.77 1 0.00 0.0122
2024-04-23 2024-03-31 13F FORMFACTOR COM 346375108 24,251 -9,234 -27.58 1 0.00 0.0095
2024-02-06 2023-12-31 13F FORMFACTOR COM 346375108 33,485 -701 -2.05 1 0.00 0.0111
2023-11-08 2023-09-30 13F FORMFACTOR COM 346375108 34,186 -1,002 -2.85 1 0.00 0.0102
2023-08-11 2023-06-30 13F FORMFACTOR COM 346375108 35,188 117 0.33 1 0.00 0.0097
2023-05-02 2023-03-31 13F FORMFACTOR COM 346375108 35,071 -2,577 -6.84 1 0.0095
2023-02-10 2022-12-31 13F FORMFACTOR COM 346375108 37,648 152 0.41 1 -100.00 0.0075
2022-11-09 2022-09-30 13F FORMFACTOR COM 346375108 37,496 -66 -0.18 939 -35.46 0.0091
2022-08-15 2022-06-30 13F FORMFACTOR COM 346375108 37,562 -506 -1.33 1,455 -9.06 0.0136
2022-08-25 2022-03-31 13F/A-1 FORMFACTOR COM 346375108 38,068 -1,900 -4.75 1,600 -12.42 0.0124
2022-06-30 2022-03-31 13F FORMFACTOR COM 346375108 38,068 -1,900 1,600 0.0127
2022-02-15 2021-12-31 13F/A-1 FORMFACTOR COM 346375108 39,968 -484 -1.20 1,827 20.99 0.0135
2022-02-15 2021-12-31 13F FORMFACTOR COM 346375108 39,968 -484 1,827 0.0135
2021-10-29 2021-09-30 13F FORMFACTOR COM 346375108 40,452 -800 -1.94 1,510 0.40 0.0127
2021-08-16 2021-06-30 13F FORMFACTOR COM 346375108 41,252 29,584 253.55 1,504 185.93 0.0121
2021-05-13 2021-03-31 13F FORMFACTOR COM 346375108 11,668 -1,077 -8.45 526 -4.01 0.0197
2021-02-12 2020-12-31 13F FORMFACTOR COM 346375108 12,745 126 1.00 548 73.97 0.0208
2020-10-30 2020-09-30 13F FORMFACTOR COM 346375108 12,619 -258 -2.00 315 -16.67 0.0137
2020-08-10 2020-06-30 13F FORMFACTOR COM 346375108 12,877 403 3.23 378 50.60 0.0175
2020-05-13 2020-03-31 13F FORMFACTOR COM 346375108 12,474 -366 -2.85 251 -24.62 0.0061
2020-02-13 2019-12-31 13F FORMFACTOR COM 346375108 12,840 1,117 9.53 333 52.05 0.0061
2019-11-13 2019-09-30 13F FORMFACTOR COM 346375108 11,723 -169 -1.42 219 17.74 0.0046
2019-08-14 2019-06-30 13F FORMFACTOR COM 346375108 11,892 639 5.68 186 2.76 0.0043
2019-05-15 2019-03-31 13F FORMFACTOR COM 346375108 11,253 376 3.46 181 18.30 0.0044
2019-02-15 2018-12-31 13F FORMFACTOR COM 346375108 10,877 681 6.68 153 9.29 0.0043
2018-11-14 2018-09-30 13F FORMFACTOR COM 346375108 10,196 -544 -5.07 140 -2.10 0.0035
2018-07-18 2018-06-30 13F FORMFACTOR COM 346375108 10,740 409 3.96 143 1.42 0.0035
2018-05-22 2018-03-31 13F FORMFACTOR COM 346375108 10,331 10,331 141 0.0037
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.