폼팩터, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionInvesco Ltd.
Latest Disclosed Ownership1,238,363 shares
Latest Disclosed Value $ 120,108,827
Invesco Ltd. reports 271.96% increase in ownership of FORM / FormFactor, Inc.

On May 12, 2026 - Invesco Ltd. filed a 13F-HR form disclosing ownership of 1,238,363 shares of FormFactor, Inc. (US:FORM) valued at $120,108,827 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 19, 2026 disclosing 332,927 shares of FormFactor, Inc.. This represents a change in shares of 271.96% during the quarter. The current value of the position is $156,782,948 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)
2026-05-12 2026-03-31 13F FORMFACTOR COM 346375108 1,238,363 905,436 271.96 120,109 546.79 0.0184
2026-02-19 2025-12-31 13F FORMFACTOR COM 346375108 332,927 20,052 6.41 18,571 62.98 0.0028
2025-11-13 2025-09-30 13F FORMFACTOR COM 346375108 312,875 13,982 4.68 11,395 10.79 0.0018
2025-08-13 2025-06-30 13F FORMFACTOR COM 346375108 298,893 -550,112 -64.79 10,285 -57.18 0.0017
2025-05-12 2025-03-31 13F FORMFACTOR COM 346375108 849,005 74,428 9.61 24,018 -29.53 0.0045
2025-02-13 2024-12-31 13F FORMFACTOR COM 346375108 774,577 -197,809 -20.34 34,081 -23.81 0.0063
2024-11-12 2024-09-30 13F FORMFACTOR COM 346375108 972,386 -1,330,536 -57.78 44,730 -67.91 0.0086
2024-08-13 2024-06-30 13F FORMFACTOR COM 346375108 2,302,922 1,428,556 163.38 139,396 249.39 0.0295
2024-05-14 2024-03-31 13F FORMFACTOR COM 346375108 874,366 103,313 13.40 39,897 24.06 0.0086
2024-02-13 2023-12-31 13F FORMFACTOR COM 346375108 771,053 413,583 115.70 32,161 157.49 0.0077
2023-11-13 2023-09-30 13F FORMFACTOR COM 346375108 357,470 -18,690 -4.97 12,490 -2.97 0.0034
2023-08-11 2023-06-30 13F FORMFACTOR COM 346375108 376,160 10,999 3.01 12,872 10.68 0.0034
2023-05-12 2023-03-31 13F FORMFACTOR COM 346375108 365,161 20,571 5.97 11,630 51.83 0.0032
2023-02-13 2022-12-31 13F FORMFACTOR COM 346375108 344,590 -517,349 -60.02 7,660 -64.52 0.0022
2022-11-14 2022-09-30 13F FORMFACTOR COM 346375108 861,939 -13,677 -1.56 21,591 -36.33 0.0069
2022-08-15 2022-06-30 13F FORMFACTOR COM 346375108 875,616 472,484 117.20 33,912 100.14 0.0103
2022-05-16 2022-03-31 13F FORMFACTOR COM 346375108 403,132 2,412 0.60 16,944 -7.52 0.0043
2022-02-14 2021-12-31 13F FORMFACTOR COM 346375108 400,720 10,519 2.70 18,321 25.78 0.0044
2021-11-15 2021-09-30 13F FORMFACTOR COM 346375108 390,201 -766,311 -66.26 14,566 -65.46 0.0037
2021-08-17 2021-06-30 13F FORMFACTOR COM 346375108 1,156,512 -306,609 -20.96 42,167 -36.11 0.0104
2021-05-17 2021-03-31 13F FORMFACTOR COM 346375108 1,463,121 -16,052 -1.09 66,002 3.72 0.0176
2021-02-16 2020-12-31 13F FORMFACTOR COM 346375108 1,479,173 816,021 123.05 63,635 284.92 0.0185
2020-11-16 2020-09-30 13F FORMFACTOR COM 346375108 663,152 -49,437 -6.94 16,532 -20.90 0.0056
2020-08-14 2020-06-30 13F FORMFACTOR COM 346375108 712,589 45,074 6.75 20,900 55.85 0.0075
2020-05-15 2020-03-31 13F FORMFACTOR COM 346375108 667,515 -127,455 -16.03 13,410 -35.04 0.0056
2020-02-14 2019-12-31 13F FORMFACTOR COM 346375108 794,970 203,039 34.30 20,645 87.05 0.0064
2019-11-14 2019-09-30 13F FORMFACTOR COM 346375108 591,931 -2,004 -0.34 11,037 18.59 0.0029
2019-08-14 2019-06-30 13F/A-1 FORMFACTOR COM 346375108 593,935 8,539 1.46 9,307 -1.19 0.0024
2019-08-14 2019-06-30 13F FORMFACTOR COM 346375108 593,935 8,539 9,307
2019-05-15 2019-03-31 13F FORMFACTOR COM 346375108 585,396 -8,389 -1.41 9,419 12.59 0.0032
2019-02-14 2018-12-31 13F FORMFACTOR COM 346375108 593,785 34,366 6.14 8,366 8.76 0.0032
2018-11-14 2018-09-30 13F FORMFACTOR COM 346375108 559,419 54,055 10.70 7,692 14.45 0.0024
2018-08-14 2018-06-30 13F FORMFACTOR COM 346375108 505,364 192,111 61.33 6,721 57.18 0.0022
2018-05-15 2018-03-31 13F FORMFACTOR COM 346375108 313,253 -556,217 -63.97 4,276 -68.57 0.0016
2018-02-14 2017-12-31 13F FORMFACTOR COM 346375108 869,470 309,140 55.17 13,607 44.11 0.0049
2017-11-14 2017-09-30 13F FORMFACTOR COM 346375108 560,330 522,587 1,384.59 9,442 1,917.52 0.0035
2017-08-14 2017-06-30 13F FORMFACTOR COM 346375108 37,743 620 1.67 468 6.36 0.0001
2017-05-15 2017-03-31 13F FORMFACTOR COM 346375108 37,123 -5,259 -12.41 440 -7.37 0.0001
2017-02-14 2016-12-31 13F FORMFACTOR COM 346375108 42,382 -686 -1.59 475 1.71 0.0002
2016-11-14 2016-09-30 13F FORMFACTOR COM 346375108 43,068 3,565 9.02 467 31.55 0.0002
2016-08-15 2016-06-30 13F FORMFACTOR COM 346375108 39,503 161 0.41 355 24.13 0.0001
2016-05-16 2016-03-31 13F FORMFACTOR COM 346375108 39,342 -4,390 -10.04 286 -27.41 0.0001
2016-02-16 2015-12-31 13F FORMFACTOR COM 346375108 43,732 3,375 8.36 394 43.80 0.0002
2015-11-16 2015-09-30 13F FORMFACTOR COM 346375108 40,357 584 1.47 274 -25.14 0.0001
2015-08-14 2015-06-30 13F FORMFACTOR COMMON 346375108 39,773 -2,704 -6.37 366 -2.92 0.0001
2015-05-15 2015-03-31 13F FORMFACTOR COMMON 346375108 42,477 -15,395 -26.60 377 -24.30 0.0001
2015-02-13 2014-12-31 13F FORMFACTOR COMMON 346375108 57,872 2,690 4.87 498 25.76 0.0002
2014-11-14 2014-09-30 13F FORMFACTOR COMMON 346375108 55,182 -11,196 -16.87 396 -28.26 0.0002
2014-08-14 2014-06-30 13F FORMFACTOR COMMON 346375108 66,378 -2,690 -3.89 552 25.17 0.0002
2014-05-15 2014-03-31 13F FORMFACTOR COMMON 346375108 69,068 -86,062 -55.48 441 -52.68 0.0002
2014-02-13 2013-12-31 13F FORMFACTOR COMMON 346375108 155,130 -85,904 -35.64 932 -43.62 0.0004
2013-11-13 2013-09-30 13F FORMFACTOR COMMON 346375108 241,034 -102,160 -29.77 1,653 -28.63 0.0007
2013-08-14 2013-06-30 13F FORMFACTOR COMMON 346375108 343,194 343,194 2,316 0.0011
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.