SLESSOR MIKE - Insider Non-Derivative Transactions at FORMFACTOR INC (FORM) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Dec 17, 2025, SLESSOR MIKE's relationship to FORMFACTOR INC (FORM) is Director,Officer (CEO), and currently has 527,664 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other FORM insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
SLESSOR MIKE - Insider Non-Derivative Transactions of FORM Common Stock
SLESSOR MIKE - Insider Non-Derivative Transactions at FORM
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Dec 18, 2025 | Sell -- (Common Stock) | 2063 | 56.82 | 525601 |
| Dec 18, 2025 | Sell -- (Common Stock) | 5606 | 56.19 | 527664 |
| Nov 20, 2025 | Sell -- (Common Stock) | 3664 | 50.6 | 533270 |
| Nov 20, 2025 | Sell -- (Common Stock) | 4739 | 49.65 | 536934 |
| Nov 8, 2025 | F -- (Common Stock) | 3282 | 52.25 | 541673 |
| Nov 8, 2025 | M -- (Common Stock) | 5908 | 0 | 544955 |
| Nov 7, 2025 | F -- (Common Stock) | 3351 | 54.22 | 539047 |
| Nov 7, 2025 | M -- (Common Stock) | 6031 | 0 | 542398 |
| Nov 6, 2025 | F -- (Common Stock) | 2025 | 55.36 | 536367 |
| Nov 6, 2025 | M -- (Common Stock) | 3644 | 0 | 538392 |
| Nov 4, 2025 | G -- (Common Stock) | 5000 | 0 | 534748 |
| Aug 8, 2025 | F -- (Common Stock) | 3282 | 27.98 | 539748 |
| Aug 8, 2025 | M -- (Common Stock) | 5908 | 0 | 543030 |
| Aug 6, 2025 | F -- (Common Stock) | 2025 | 29.14 | 537122 |
| Aug 6, 2025 | M -- (Common Stock) | 3644 | 0 | 539147 |
| Aug 2, 2025 | F -- (Common Stock) | 27739 | 28.93 | 529091 |
| Aug 2, 2025 | F -- (Common Stock) | 8014 | 28.93 | 535503 |
| Aug 2, 2025 | M -- (Common Stock) | 14426 | 0 | 543517 |
| Aug 2, 2025 | M -- (Common Stock) | 49935 | 0 | 556830 |
| Jul 2, 2025 | Sell -- (Common Stock) | 4000 | 34.03 | 506895 |
| Jun 3, 2025 | Sell -- (Common Stock) | 4000 | 29.83 | 510895 |
| May 8, 2025 | F -- (Common Stock) | 3282 | 29.66 | 514895 |
| May 8, 2025 | M -- (Common Stock) | 5908 | 0 | 518177 |
| May 6, 2025 | F -- (Common Stock) | 2025 | 29.81 | 512269 |
| May 6, 2025 | M -- (Common Stock) | 3644 | 0 | 514294 |
| May 2, 2025 | Sell -- (Common Stock) | 4000 | 31.72 | 510650 |
| Apr 2, 2025 | Sell -- (Common Stock) | 4000 | 28.24 | 514650 |
| Mar 4, 2025 | Sell -- (Common Stock) | 4000 | 33.05 | 518650 |
| Feb 8, 2025 | F -- (Common Stock) | 3282 | 35.84 | 522650 |
| Feb 8, 2025 | M -- (Common Stock) | 5908 | 0 | 525932 |
| Feb 6, 2025 | F -- (Common Stock) | 2151 | 41.12 | 520024 |
| Feb 6, 2025 | M -- (Common Stock) | 3644 | 0 | 522175 |
| Feb 4, 2025 | Sell -- (Common Stock) | 100 | 39.53 | 518531 |
| Feb 4, 2025 | Sell -- (Common Stock) | 3900 | 38.97 | 518631 |
| Jan 3, 2025 | Sell -- (Common Stock) | 400 | 45.01 | 522531 |
| Jan 3, 2025 | Sell -- (Common Stock) | 3600 | 44.38 | 522931 |
| Dec 3, 2024 | Sell -- (Common Stock) | 101 | 41.17 | 526531 |
| Dec 3, 2024 | Sell -- (Common Stock) | 3899 | 40.57 | 526632 |
| Nov 8, 2024 | F -- (Common Stock) | 3276 | 42.4 | 530531 |
| Nov 8, 2024 | M -- (Common Stock) | 5908 | 0 | 533807 |
| Nov 6, 2024 | F -- (Common Stock) | 2021 | 39.23 | 527899 |
| Nov 6, 2024 | M -- (Common Stock) | 3644 | 0 | 529920 |
| Nov 2, 2024 | Sell -- (Common Stock) | 4000 | 38.81 | 526276 |
| Oct 2, 2024 | Sell -- (Common Stock) | 1000 | 46 | 530276 |
| Oct 2, 2024 | Sell -- (Common Stock) | 3000 | 45.04 | 531276 |
| Sep 4, 2024 | Sell -- (Common Stock) | 1188 | 47.17 | 534276 |
| Sep 4, 2024 | Sell -- (Common Stock) | 2812 | 45.94 | 535464 |
| Aug 8, 2024 | F -- (Common Stock) | 3276 | 43.11 | 538276 |
| Aug 8, 2024 | M -- (Common Stock) | 5908 | 0 | 541552 |
| Aug 3, 2024 | F -- (Common Stock) | 7506 | 40.9 | 535644 |
| Aug 3, 2024 | M -- (Common Stock) | 13536 | 0 | 543150 |
| Aug 2, 2024 | Sell -- (Common Stock) | 1094 | 53.8 | 523187 |
| Aug 2, 2024 | Sell -- (Common Stock) | 8 | 52.62 | 524281 |
| Aug 2, 2024 | Sell -- (Common Stock) | 471 | 51.29 | 524289 |
| Aug 2, 2024 | Sell -- (Common Stock) | 1389 | 50.28 | 524760 |
| Aug 2, 2024 | Sell -- (Common Stock) | 1038 | 48.6 | 526149 |
| Aug 2, 2024 | F -- (Common Stock) | 8000 | 47.25 | 529614 |
| Aug 2, 2024 | M -- (Common Stock) | 14427 | 0 | 537614 |
| Jul 24, 2024 | F -- (Common Stock) | 49296 | 60.25 | 527187 |
| Jul 24, 2024 | M -- (Common Stock) | 88902 | 0 | 576483 |
| Jul 2, 2024 | Sell -- (Common Stock) | 682 | 60.57 | 487581 |
| Jul 2, 2024 | Sell -- (Common Stock) | 995 | 59.24 | 488263 |
| Jul 2, 2024 | Sell -- (Common Stock) | 2323 | 58.44 | 489258 |
| Jun 4, 2024 | Sell -- (Common Stock) | 1230 | 54.83 | 491581 |
| Jun 4, 2024 | Sell -- (Common Stock) | 2770 | 54.17 | 492811 |
| May 8, 2024 | F -- (Common Stock) | 2108 | 56.03 | 495581 |
| May 8, 2024 | M -- (Common Stock) | 5908 | 0 | 497689 |
| May 2, 2024 | Sell -- (Common Stock) | 4000 | 43.75 | 491781 |
| Apr 2, 2024 | Sell -- (Common Stock) | 4000 | 45.94 | 495781 |
| Mar 2, 2024 | Sell -- (Common Stock) | 4000 | 43.38 | 499781 |
| Feb 14, 2024 | G -- (Common Stock) | 3500 | 0 | 397269 |
| Feb 14, 2024 | G -- (Common Stock) | 3500 | 0 | 562861 |
| Feb 8, 2024 | F -- (Common Stock) | 2248 | 38.12 | 566001 |
| Nov 8, 2023 | F -- (Common Stock) | 2930 | 36.28 | 568249 |
| Aug 28, 2023 | F -- (Common Stock) | 8624 | 31.25 | 571179 |
| Aug 28, 2023 | M -- (Common Stock) | 16667 | 0 | 579803 |
| Aug 8, 2023 | Acquisition -- (Common Stock) | 70896 | 0 | 563136 |
| Aug 3, 2023 | F -- (Common Stock) | 4873 | 36.02 | 492240 |
| Aug 3, 2023 | M -- (Common Stock) | 13537 | 0 | 497113 |
| Aug 2, 2023 | F -- (Common Stock) | 4989 | 37.16 | 483576 |
| Aug 2, 2023 | M -- (Common Stock) | 14427 | 0 | 488565 |
| Feb 14, 2023 | G -- (Common Stock) | 3300 | 0 | 474138 |
| Feb 14, 2023 | Sell -- (Common Stock) | 10000 | 31.97 | 477438 |
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