FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership12,120 shares
Latest Disclosed Value $ 1,175,519
ProShare Advisors LLC reports 19.98% decrease in ownership of FORM / FormFactor, Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 12,120 shares of FormFactor, Inc. (US:FORM) valued at $1,175,519 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 15,147 shares of FormFactor, Inc.. This represents a change in shares of -19.98% during the quarter. The current value of the position is $1,534,453 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)
2026-04-24 2026-03-31 13F FORMFACTOR COM 346375108 12,120 -3,027 -19.98 1,176 39.22 0.0017
2026-02-06 2025-12-31 13F FORMFACTOR COM 346375108 15,147 -14,189 -48.37 845 -20.97 0.0015
2025-11-06 2025-09-30 13F FORMFACTOR COM 346375108 29,336 11,956 68.79 1,068 78.60 0.0022
2025-08-07 2025-06-30 13F FORMFACTOR COM 346375108 17,380 -853 -4.68 598 16.12 0.0012
2025-05-08 2025-03-31 13F FORMFACTOR COM 346375108 18,233 -5,101 -21.86 516 -49.81 0.0012
2025-02-14 2024-12-31 13F FORMFACTOR COM 346375108 23,334 7,183 44.47 1,027 38.27 0.0023
2024-11-14 2024-09-30 13F FORMFACTOR COM 346375108 16,151 4,268 35.92 743 3.20 0.0018
2024-08-13 2024-06-30 13F FORMFACTOR COM 346375108 11,883 -3,691 -23.70 719 1.27 0.0019
2024-05-08 2024-03-31 13F FORMFACTOR COM 346375108 15,574 1,069 7.37 711 17.36 0.0019
2024-02-14 2023-12-31 13F FORMFACTOR COM 346375108 14,505 2,747 23.36 605 47.56 0.0018
2023-11-13 2023-09-30 13F FORMFACTOR COM 346375108 11,758 -297 -2.46 411 -0.49 0.0013
2023-08-10 2023-06-30 13F FORMFACTOR COM 346375108 12,055 877 7.85 413 15.73 0.0012
2023-05-26 2023-03-31 13F/A-1 FORMFACTOR COM 346375108 11,178 -990 -8.14 356 31.85 0.0011
2023-05-12 2023-03-31 13F FORMFACTOR COM 346375108 11,178 -990 356 0.0011
2023-02-02 2022-12-31 13F FORMFACTOR COM 346375108 12,168 1,568 14.79 270 1.50 0.0009
2022-11-07 2022-09-30 13F FORMFACTOR COM 346375108 10,600 -406 -3.69 266 -37.70 0.0010
2022-08-01 2022-06-30 13F FORMFACTOR COM 346375108 11,006 -6,303 -36.41 427 -41.35 0.0014
2022-05-10 2022-03-31 13F FORMFACTOR COM 346375108 17,309 -2,135 -10.98 728 -18.11 0.0016
2022-02-08 2021-12-31 13F FORMFACTOR COM 346375108 19,444 7,472 62.41 889 98.88 0.0017
2021-11-12 2021-09-30 13F FORMFACTOR COM 346375108 11,972 -10,314 -46.28 447 -45.02 0.0013
2021-08-13 2021-06-30 13F FORMFACTOR COM 346375108 22,286 -643 -2.80 813 -21.37 0.0024
2021-05-14 2021-03-31 13F FORMFACTOR COM 346375108 22,929 4,338 23.33 1,034 29.25 0.0033
2021-02-09 2020-12-31 13F FORMFACTOR COM 346375108 18,591 7,730 71.17 800 195.20 0.0030
2020-11-13 2020-09-30 13F FORMFACTOR COM 346375108 10,861 -788 -6.76 271 -20.76 0.0013
2020-08-03 2020-06-30 13F FORMFACTOR COM 346375108 11,649 11,649 342 0.0018
2020-05-15 2020-03-31 13F FORMFACTOR COM 346375108 0 -12,312 -100.00 0 -100.00
2020-02-12 2019-12-31 13F FORMFACTOR COM 346375108 12,312 1,939 18.69 320 65.80 0.0015
2019-11-12 2019-09-30 13F FORMFACTOR COM 346375108 10,373 10,373 193 0.0011
2019-08-13 2019-06-30 13F FORMFACTOR COM 346375108 0 -10,185 -100.00 0 -100.00
2019-05-15 2019-03-31 13F FORMFACTOR COM 346375108 10,185 10,185 164 0.0010
2019-02-14 2018-12-31 13F FORMFACTOR COM 346375108 0 -10,913 -100.00 0 -100.00
2018-11-14 2018-09-30 13F FORMFACTOR COM 346375108 10,913 -1,077 -8.98 150 -5.66 0.0010
2018-08-13 2018-06-30 13F FORMFACTOR COM 346375108 11,990 538 4.70 159 1.92 0.0011
2018-05-14 2018-03-31 13F FORMFACTOR COM 346375108 11,452 763 7.14 156 -6.59 0.0010
2018-02-14 2017-12-31 13F FORMFACTOR COM 346375108 10,689 10,689 167 0.0012
2017-05-08 2017-03-31 13F/A-1 FORMFACTOR COM 346375108 0 -11,042 -100.00 0 -100.00
2017-02-13 2016-12-31 13F FORMFACTOR COM 346375108 11,042 11,042 0.00 124 0.0014
2015-08-11 2015-06-30 13F FORMFACTOR COM 346375108 0 -10,731 -100.00 0 -100.00
2015-05-08 2015-03-31 13F FORMFACTOR COM 346375108 10,731 10,731 0.00 95 0.0011
2015-01-30 2014-12-31 13F FORMFACTOR COM 346375108 0 -21,811 -100.00 0 -100.00
2014-11-06 2014-09-30 13F FORMFACTOR COM 346375108 21,811 -4,932 -18.44 156 -30.04 0.0021
2014-08-08 2014-06-30 13F FORMFACTOR COM 346375108 26,743 -27,826 -50.99 223 -36.10 0.0029
2014-05-07 2014-03-31 13F FORMFACTOR COM 346375108 54,569 54,569 59.27 349 48.51 0.0044
2014-02-04 2013-12-31 13F FORMFACTOR COM 346375108 0 -34,262 -100.00 0 -100.00
2013-11-07 2013-09-30 13F FORMFACTOR COM 346375108 34,262 2,248 7.02 235 8.80 0.0056
2013-07-25 2013-06-30 13F FORMFACTOR COM 346375108 32,014 32,014 216 0.0042
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.