Formfactor Inc
FORM- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001039399
In the last 90 days, Formfactor Inc insiders filed 0 open-market purchases and 4 sales; 510 institutions reported holding it in 13F filings for Q2 2026, worth $11.4B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of FORM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Formfactor Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 12.40%9.68M shares | – | Jul 28, 20261 filing | Jul 28, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 7.61%5.94M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.21%4.07M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
15 Schedule 13D and 13G filings on Formfactor Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 202612:05 PM ET | Earnest Partners LLC | 13G/A | 4.80%3.76M shares | −1.50 ppfrom 6.30%Below 5% | Jun 30, 2026 | SEC |
| Jul 28, 20264:44 PM ET | BlackRock, Inc. | 13G/A | 12.40%9.68M shares | – | Jun 30, 2026 | SEC |
| May 15, 20263:28 PM ET | Earnest Partners LLC | 13G/A | 6.30%4.88M shares | – | Mar 31, 2026 | SEC |
| Apr 29, 20266:50 PM ET | Vanguard Capital Management LLC | 13G | 5.21%4.07M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20261:54 PM ET | Vanguard Portfolio Management LLC | 13G | 7.61%5.94M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20266:37 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −13.66 ppfrom 13.66%Below 5% | Mar 13, 2026 | SEC |
| Jan 31, 202511:44 AM ET | Vanguard Group Inc | 13G/A | 13.66%10.6M shares | – | Dec 31, 2024 | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | Earnest Partners LLC | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2022 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Earnest Partners LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2021 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20212:22 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Formfactor Inc shares.
No Form 144 notices for Formfactor Inc are on file.