FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership2,404 shares
Latest Disclosed Value $ 233,164
Signaturefd, Llc reports 2.56% increase in ownership of FORM / FormFactor, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 2,404 shares of FormFactor, Inc. (US:FORM) valued at $233,164 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 2,344 shares of FormFactor, Inc.. This represents a change in shares of 2.56% during the quarter. The current value of the position is $302,952 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)
2026-04-07 2026-03-31 13F FORMFACTOR COM 346375108 2,404 60 2.56 233 79.23 0.0036
2026-01-20 2025-12-31 13F FORMFACTOR COM 346375108 2,344 13 0.56 131 54.76 0.0020
2025-10-21 2025-09-30 13F FORMFACTOR COM 346375108 2,331 -59 -2.47 85 2.44 0.0013
2025-07-16 2025-06-30 13F FORMFACTOR COM 346375108 2,390 276 13.06 82 38.98 0.0014
2025-05-02 2025-03-31 13F FORMFACTOR COM 346375108 2,114 233 12.39 60 -28.05 0.0011
2025-02-10 2024-12-31 13F FORMFACTOR COM 346375108 1,881 -108 -5.43 83 -9.89 0.0016
2024-10-21 2024-09-30 13F FORMFACTOR COM 346375108 1,989 97 5.13 91 -20.18 0.0017
2024-07-29 2024-06-30 13F FORMFACTOR COM 346375108 1,892 11 0.58 115 34.12 0.0023
2024-05-03 2024-03-31 13F FORMFACTOR COM 346375108 1,881 63 3.47 86 13.33 0.0018
2024-02-01 2023-12-31 13F FORMFACTOR COM 346375108 1,818 50 2.83 76 22.95 0.0018
2023-11-03 2023-09-30 13F FORMFACTOR COM 346375108 1,768 18 1.03 62 3.39 0.0016
2023-08-01 2023-06-30 13F FORMFACTOR COM 346375108 1,750 0 0.00 60 7.27 0.0015
2023-04-28 2023-03-31 13F FORMFACTOR COM 346375108 1,750 -77 -4.21 56 37.50 0.0015
2023-01-30 2022-12-31 13F FORMFACTOR COM 346375108 1,827 -84 -4.40 41 -16.67 0.0012
2022-11-08 2022-09-30 13F FORMFACTOR COM 346375108 1,911 -256 -11.81 48 -42.86 0.0016
2022-08-10 2022-06-30 13F FORMFACTOR COM 346375108 2,167 201 10.22 84 1.20 0.0029
2022-05-02 2022-03-31 13F FORMFACTOR COM 346375108 1,966 72 3.80 83 -4.60 0.0025
2022-01-25 2021-12-31 13F FORMFACTOR COM 346375108 1,894 78 4.30 87 27.94 0.0027
2021-10-28 2021-09-30 13F FORMFACTOR COM 346375108 1,816 1,566 626.40 68 655.56 0.0023
2021-07-26 2021-06-30 13F FORMFACTOR COM 346375108 250 0 0.00 9 -18.18 0.0004
2021-04-30 2021-03-31 13F FORMFACTOR COM 346375108 250 0 0.00 11 0.00 0.0005
2021-02-11 2020-12-31 13F FORMFACTOR COM 346375108 250 0 0.00 11 83.33 0.0005
2020-11-03 2020-09-30 13F FORMFACTOR COM 346375108 250 0 0.00 6 -14.29 0.0003
2020-07-30 2020-06-30 13F FORMFACTOR COM 346375108 250 0 0.00 7 40.00 0.0004
2020-04-23 2020-03-31 13F FORMFACTOR COM 346375108 250 250 5 0.0004
2019-07-31 2019-06-30 13F FORMFACTOR COM 346375108 0 -200 -100.00 0 -100.00
2019-05-09 2019-03-31 13F FORMFACTOR COM 346375108 200 0 0.00 3 0.00 0.0003
2019-02-13 2018-12-31 13F FORMFACTOR COM 346375108 200 200 3 0.0003
2017-02-14 2016-12-31 13F FORMFACTOR COM 346375108 0 -150 -100.00 0 -100.00
2016-11-14 2016-09-30 13F FORMFACTOR COM 346375108 150 150 2 0.0003
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.