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.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Formfactor Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 4 filings
- 2 insiders, $4.69M in total
- Insiders trading
- 2
- Net value
- −$4.69M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Formfactor Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Slessor Mike | CEO | 466,694 | Sep 17, 2026 | 21 |
| Steven-Waiss Kelley | Director | 24,426 | Sep 4, 2026 | 5 |
| McKinnis Aric Brendan | CFO, SVP Global Finance | 14,152 | Aug 10, 2026 | 10 |
| St Dennis Thomas | Director | 28,333 | Jun 16, 2026 | 5 |
| Rhodes Sheri | Director | 5,375 | Jun 4, 2026 | 3 |
| Obregon-Jimenez Rebeca | Director | 7,875 | May 22, 2026 | 3 |
| White Brian C | Director | 8,653 | May 21, 2026 | 4 |
| Titinger Jorge | Director | 14,836 | May 19, 2026 | 3 |
| Brewer Kevin J | Director | 8,105 | Feb 12, 2026 | 1 |
| Shahar Shai | CFO, SVP Global Finance | 55,968 | Aug 8, 2025 | 0 |
| Maier Lothar | Director | 6,770 | May 15, 2024 | 0 |
| Link Raymond A | Director | 66,225 | May 30, 2023 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 4, 2024 (view filing) | Jun 3 | 1 day | Slessor MikeCEO | SSale | −4.00K | $54.37 | −$217.5K | −0.8%491.6K after | 2 lots10b5-1 |
| May 29, 2024 (view filing) | May 28 | 1 day | Obregon-Jimenez RebecaDirector | SSale | −4.83K | $57.59 | −$278.3K | −31.3%10.6K after | |
| May 22, 2024 (view filing) | May 20 | 2 days | White Brian CDirector | SSale | −3.29K | $57.00 | −$187.5K | −21.8%11.8K after | |
| May 15, 2024 (view filing) | May 14 | 1 day | Maier LotharDirector | SSale | −99.7K | $55.08 | −$5.49M | −93.6%6.77K after | |
| May 13, 2024 (view filing) | May 10 | 3 days | St Dennis ThomasDirector | SSale | −2.00K | $56.30 | −$112.6K | −5.2%36.7K after | |
| May 8, 2024 (view filing) | May 6-7 | 2 days | Shahar ShaiCFO, SVP Global Finance | SSale | −11.9K | $55.10 | −$656.9K | −43.2%15.7K after | 3 lots |
| May 8, 2024 (view filing) | May 7 | 1 day | Rhodes SheriDirector | SSale | −13.3K | $56.02 | −$746.1K | −63.6%7.63K after | |
| May 8, 2024 (view filing) | May 6 | 2 days | Steven-Waiss KelleyDirector | SSale | −4.80K | $54.24 | −$260.4K | −12.8%32.6K after | |
| May 2, 2024 (view filing) | May 1 | 1 day | Slessor MikeCEO | SSale | −4.00K | $43.75 | −$175.0K | −0.8%491.8K after | 10b5-1 |
| Apr 2, 2024 (view filing) | Apr 1 | 1 day | Slessor MikeCEO | SSale | −4.00K | $45.94 | −$183.8K | −0.8%495.8K after | 10b5-1 |
| Mar 5, 2024 (view filing) | Mar 4 | 1 day | Shahar ShaiCFO, SVP Global Finance | SSale | −10.0K | $44.51 | −$445.1K | −26.6%27.6K after | |
| Mar 4, 2024 (view filing) | Mar 1 | 3 days | Slessor MikeCEO | SSale | −4.00K | $43.38 | −$173.5K | −0.8%499.8K after | 10b5-1 |
| Feb 13, 2024 (view filing) | Feb 12 | 1 day | Shahar ShaiCFO, SVP Global Finance | SSale | −10.0K | $42.12 | −$421.2K | −13.0%67.1K after | |
| Dec 5, 2023 (view filing) | Dec 1 | 4 days | Obregon-Jimenez RebecaDirector | SSale | −8.49K | $37.51 | −$318.5K | −42.3%11.6K after | |
| Nov 21, 2023 (view filing) | Nov 20 | 1 day | Shahar ShaiCFO, SVP Global Finance | SSale | −16.6K | $39.49 | −$656.2K | −17.6%77.9K after | |
| Nov 15, 2023 (view filing) | Nov 14 | 1 day | St Dennis ThomasDirector | SSale | −3.79K | $38.24 | −$145.0K | −8.9%38.7K after | |
| Nov 13, 2023 (view filing) | Nov 9-10 | 4 days | Shahar ShaiCFO, SVP Global Finance | SSale | −24.4K | $36.40 | −$886.7K | −20.5%94.6K after | 5 lots |
| Mar 7, 2023 (view filing) | Mar 6 | 1 day | Shahar ShaiCFO, SVP Global Finance | SSale | −4.76K | $29.68 | −$141.2K | −6.1%72.9K after | |
| Feb 17, 2023 (view filing) | Feb 16 | 1 day | St Dennis ThomasDirector | SSale | −13.0K | $32.31 | −$420.0K | −29.6%30.9K after | |
| Feb 15, 2023 (view filing) | Feb 13 | 2 days | Slessor MikeCEO | SSale | −10.0K | $31.97 | −$319.7K | −2.1%477.4K after | |
| May 17, 2022 (view filing) | May 17 | Same day | Link Raymond ADirector | SSale | −1.60K | $40.23 | −$64.4K | −2.5%61.4K after | |
| Feb 14, 2022 (view filing) | Feb 9 | 5 days | Steven-Waiss KelleyDirector | SSale | −6.00K | $42.62 | −$255.7K | −21.4%22.0K after | Amended |
| Feb 9, 2022 (view filing) | Feb 8 | 1 day | Obregon-Jimenez RebecaDirector | SSale | −2.40K | $41.61 | −$99.9K | −33.8%4.70K after | |
| Feb 9, 2022 (view filing) | Feb 8 | 1 day | St Dennis ThomasDirector | SSale | −6.00K | $41.63 | −$249.8K | −13.0%40.1K after | |
| Nov 26, 2021 (view filing) | Nov 24 | 2 days | Steven-Waiss KelleyDirector | SSale | −3.00K | $43.12 | −$129.4K | −12.0%22.0K after | |
| Nov 10, 2021 (view filing) | Nov 9 | 1 day | Shahar ShaiCFO, SVP Global Finance | SSale | −3.37K | $43.78 | −$147.7K | −7.9%39.5K after | |
| Nov 8, 2021 (view filing) | Nov 5 | 3 days | Slessor MikeCEO | SSale | −25.0K | $44.60 | −$1.11M | −6.0%392.9K after |