폼팩터, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionPrudential Financial Inc
Latest Disclosed Ownership238,732 shares
Latest Disclosed Value $ 23,154,616
Prudential Financial Inc reports 76.26% increase in ownership of FORM / FormFactor, Inc.

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 238,732 shares of FormFactor, Inc. (US:FORM) valued at $23,154,617 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 135,443 shares of FormFactor, Inc.. This represents a change in shares of 76.26% during the quarter. The current value of the position is $30,224,665 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)
2026-05-13 2026-03-31 13F FORMFACTOR COM 346375108 238,732 103,289 76.26 23,155 206.47 0.0160
2026-02-13 2025-12-31 13F FORMFACTOR COM 346375108 135,443 57,656 74.12 7,555 166.68 0.0091
2025-11-13 2025-09-30 13F FORMFACTOR COM 346375108 77,787 -2,865 -3.55 2,833 2.09 0.0034
2025-08-12 2025-06-30 13F FORMFACTOR COM 346375108 80,652 4,605 6.06 2,775 29.01 0.0036
2025-05-13 2025-03-31 13F FORMFACTOR COM 346375108 76,047 -37,125 -32.80 2,151 -56.80 0.0031
2025-02-11 2024-12-31 13F FORMFACTOR COM 346375108 113,172 -49,974 -30.63 4,980 -33.65 0.0068
2024-11-14 2024-09-30 13F FORMFACTOR COM 346375108 163,146 -35,082 -17.70 7,505 -37.46 0.0106
2024-08-13 2024-06-30 13F FORMFACTOR COM 346375108 198,228 -102,631 -34.11 11,999 -12.60 0.0180
2024-05-14 2024-03-31 13F FORMFACTOR COM 346375108 300,859 -6,282 -2.05 13,728 7.17 0.0193
2024-02-13 2023-12-31 13F FORMFACTOR COM 346375108 307,141 215,076 233.61 12,811 298.32 0.0194
2023-11-13 2023-09-30 13F FORMFACTOR COM 346375108 92,065 -4,508 -4.67 3,217 -3.13 0.0050
2023-08-11 2023-06-30 13F FORMFACTOR COM 346375108 96,573 20,048 26.20 3,320 26.24 0.0048
2023-05-12 2023-03-31 13F FORMFACTOR COM 346375108 76,525 -2,614 -3.30 2,631 49.52 0.0041
2023-02-14 2022-12-31 13F FORMFACTOR COM 346375108 79,139 -633 -0.79 1,759 -13.39 0.0030
2022-11-04 2022-09-30 13F FORMFACTOR COM 346375108 79,772 -1,604 -1.97 2,031 -35.42 0.0034
2022-08-15 2022-06-30 13F FORMFACTOR COM 346375108 81,376 -1,726 -2.08 3,145 -9.96 0.0050
2022-05-13 2022-03-31 13F FORMFACTOR COM 346375108 83,102 -875 -1.04 3,493 -6.33 0.0046
2022-02-14 2021-12-31 13F FORMFACTOR COM 346375108 83,977 -1,152 -1.35 3,729 14.84 0.0046
2021-11-15 2021-09-30 13F FORMFACTOR COM 346375108 85,129 -10,228 -10.73 3,247 -6.61 0.0045
2021-08-16 2021-06-30 13F FORMFACTOR COM 346375108 95,357 -370,703 -79.54 3,477 -83.46 0.0048
2021-05-12 2021-03-31 13F FORMFACTOR COM 346375108 466,060 -324,563 -41.05 21,024 -38.19 0.0315
2021-08-16 2020-12-31 13F/A-1 FORMFACTOR COM 0043 346375108 790,623 790,190 182,491.92 34,014 309,118.18 0.0572
2021-02-16 2020-12-31 13F FORMFACTOR COM 346375108 790,623 790,190 34,012 0.0572
2021-08-05 2020-09-30 13F/A-1 FORMFACTOR COM 346375108 433 76 21.29 11 10.00 0.0016
2020-11-16 2020-09-30 13F FORMFACTOR COM 346375108 927,080 926,723 23,112 0.0436
2021-08-05 2020-06-30 13F/A-1 FORMFACTOR COM 0029 346375108 357 17 5.00 10 42.86 0.0019
2020-08-12 2020-06-30 13F FORMFACTOR COM 346375108 643,396 643,056 18,870 0.0363
2021-08-05 2020-03-31 13F/A-1 FORMFACTOR COM 0020 346375108 340 3 0.89 7 -22.22 0.0018
2020-05-12 2020-03-31 13F FORMFACTOR COM 346375108 185,900 185,563 3,735 0.0083
2021-08-05 2019-12-31 13F/A-1 FORMFACTOR COM 0025 346375108 337 133 65.20 9 125.00 0.0023
2020-02-11 2019-12-31 13F FORMFACTOR COM 346375108 179,491 179,287 4,661 0.0069
2021-08-05 2019-09-30 13F/A-1 FORMFACTOR COM 0018 346375108 204 55 36.91 4 100.00 0.0013
2019-11-13 2019-09-30 13F FORMFACTOR COM 346375108 119,885 119,736 2,235 0.0035
2021-08-05 2019-06-30 13F/A-1 FORMFACTOR COM 346375108 149 111 292.11 2 100.00 0.0007
2019-08-08 2019-06-30 13F FORMFACTOR COM 346375108 119,014 118,976 1,865 0.0029
2021-08-05 2019-03-31 13F/A-1 FORMFACTOR COM 346375108 38 -4 -9.52 1 0.00 0.0004
2019-05-15 2019-03-31 13F FORMFACTOR COM 346375108 119,254 119,212 1,919 0.0032
2021-08-05 2018-12-31 13F/A-1 FORMFACTOR COM 346375108 42 -121,272 -99.97 1 -99.94 0.0008
2019-02-07 2018-12-31 13F FORMFACTOR COM 346375108 120,547 -767 1,699 0.0030
2018-11-07 2018-09-30 13F FORMFACTOR COM 346375108 121,314 140 0.12 1,668 3.47 0.0025
2018-08-13 2018-06-30 13F FORMFACTOR COM 346375108 121,174 -41,440 -25.48 1,612 -27.39 0.0024
2018-05-04 2018-03-31 13F FORMFACTOR COM 346375108 162,614 -13,634 -7.74 2,220 -19.51 0.0034
2018-02-13 2017-12-31 13F FORMFACTOR COM 346375108 176,248 163,399 1,271.69 2,758 1,170.97 0.0038
2017-11-02 2017-09-30 13F FORMFACTOR COM 346375108 12,849 12,849 217 0.0004
2014-11-12 2014-09-30 13F FORMFACTOR COM 346375108 0 -10,019 -100.00 0 -100.00
2014-08-13 2014-06-30 13F FORMFACTOR COM 346375108 10,019 10,019 83 0.0001
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.