FORM
FORMFACTOR INC
Semiconductors & Related DevicesNasdaqLarge accelerated filer
Total Trades
44
Buys
0
Sells
43
Largest Trade
N/A
Insiders
10
Institutional Funds
276
Inst. Value
$1M+
Activist Filings
9
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| WHITE BRIAN C | Director | SELL | $100K–$500K | 2K | $100.01 | Feb 25, 2026 |
| BREWER KEVIN J | Director | SELL | $100K–$500K | 3K | $96.20 | Feb 12, 2026 |
| St Dennis Thomas | Director | SELL | $500K+ | 7K | $93.84 | Feb 11, 2026 |
| Rhodes Sheri | Director | SELL | $500K+ | 8K | $92.61 | Feb 11, 2026 |
| STEVEN-WAISS KELLEY | Director | SELL | $100K–$500K | 2K | $93.70 | Feb 11, 2026 |
| Obregon-Jimenez Rebeca | Director | SELL | $100K–$500K | 3K | $95.82 | Feb 10, 2026 |
| WHITE BRIAN C | Director | SELL | $500K+ | 6K | $90.95 | Feb 10, 2026 |
| Titinger Jorge | Director | SELL | $100K–$500K | 2K | $88.84 | Feb 10, 2026 |
| SLESSOR MIKE | CEO | SELL | $1M+ | 13K | $76.81 | Jan 15, 2026 |
| SLESSOR MIKE | CEO | SELL | $1M+ | 40K | $65.00 | Jan 7, 2026 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 8K | $56.36 | Dec 17, 2025 |
| STEVEN-WAISS KELLEY | Director | SELL | $100K–$500K | 3K | $55.97 | Dec 2, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 8K | $50.06 | Nov 20, 2025 |
| St Dennis Thomas | Director | SELL | $50K–$100K | 2K | $49.85 | Nov 18, 2025 |
| STEVEN-WAISS KELLEY | Director | SELL | $100K–$500K | 4K | $30.43 | Sep 12, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $34.03 | Jul 2, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $29.83 | Jun 3, 2025 |
| St Dennis Thomas | Director | SELL | $50K–$100K | 3K | $31.24 | May 30, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $31.72 | May 1, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $28.24 | Apr 2, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $44.44 | Jan 2, 2025 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $40.59 | Dec 2, 2024 |
| St Dennis Thomas | Director | SELL | $100K–$500K | 3K | $39.11 | Nov 6, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $38.81 | Nov 4, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $45.28 | Oct 2, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $59.00 | Jul 2, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $54.37 | Jun 4, 2024 |
| Obregon-Jimenez Rebeca | Director | SELL | $100K–$500K | 5K | $57.59 | May 29, 2024 |
| WHITE BRIAN C | Director | SELL | $100K–$500K | 3K | $57.00 | May 22, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $43.75 | May 2, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $45.94 | Apr 2, 2024 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 4K | $43.38 | Mar 4, 2024 |
| Shahar Shai | CFO | SELL | $100K–$500K | 10K | $42.12 | Feb 13, 2024 |
| Shahar Shai | CFO | SELL | $500K+ | 17K | $39.49 | Nov 21, 2023 |
| St Dennis Thomas | Director | SELL | $100K–$500K | 4K | $38.24 | Nov 15, 2023 |
| Shahar Shai | CFO | SELL | $500K+ | 24K | $36.40 | Nov 13, 2023 |
| Shahar Shai | CFO | SELL | $100K–$500K | 5K | $29.68 | Mar 8, 2023 |
| St Dennis Thomas | Director | SELL | $100K–$500K | 13K | $32.31 | Feb 17, 2023 |
| SLESSOR MIKE | CEO | SELL | $100K–$500K | 10K | $31.97 | Feb 15, 2023 |
| LINK RAYMOND A | Director | SELL | $50K–$100K | 2K | $40.23 | May 17, 2022 |
| LINK RAYMOND A | Director | EXERCISE | N/A | 4K | — | May 17, 2022 |
| STEVEN-WAISS KELLEY | Director | SELL | $100K–$500K | 6K | $42.62 | Feb 10, 2022 |
| Obregon-Jimenez Rebeca | Director | SELL | $50K–$100K | 2K | $41.61 | Feb 9, 2022 |
| St Dennis Thomas | Director | SELL | $100K–$500K | 6K | $41.63 | Feb 9, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 276 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| EARNEST PARTNERS LLC | 5.8M | $1M+ | SH |
| STATE STREET CORP | 2.9M | $1M+ | SH |
| REINHART PARTNERS, LLC. | 2.2M | $1M+ | SH |
| PRIMECAP MANAGEMENT CO/CA/ | 2.1M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 1.6M | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 1.4M | $1M+ | SH |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.4M | $1M+ | SH |
| VICTORY CAPITAL MANAGEMENT INC | 1.3M | $1M+ | SH |
| ROYCE & ASSOCIATES LP | 1.2M | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1.1M | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1.1M | $1M+ | SH |
| Channing Capital Management, LLC | 1.0M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 952K | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 602K | $1M+ | SH |
| NORGES BANK | 564K | $1M+ | SH |
| Assenagon Asset Management S.A. | 563K | $1M+ | SH |
| VANGUARD GROUP INC | 522K | $1M+ | SH |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 450K | $1M+ | SH |
| Fisher Asset Management, LLC | 436K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jan 31, 2025
13.7%
10.6M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
12.2%
9.5M shares
SC 13G/A · Feb 13, 2024
7.8%
6.1M shares
SC 13G/A · Jan 22, 2024
15.3%
11.9M shares
SC 13G/A · Feb 13, 2023
9.1%
7.0M shares
SC 13G/A · Jan 26, 2023
16.0%
12.3M shares
SC 13G/A · Jan 20, 2023
16.0%
12.3M shares
SC 13G/A · Jan 27, 2022
15.2%
11.9M shares
SC 13G/A · Jan 25, 2022
15.2%
11.9M shares