Mike Slessor insider trades: Formfactor (FORM) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Mike reports to the SEC
Open-market buys and sales
57 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | FORM | ↓ Sell10b5-1 | 11,098 | $125.20 | $1.4M | Direct | Oct 14, 2026 (0d) |
| Sep 16, 2026 | FORM | ↓ Sell10b5-1 | 17,510 | $104.73 | $1.8M | Direct | Sep 17, 2026 (1d) |
| Aug 14, 2026 | FORM | ↓ Sell10b5-1 | 16,002 | $130.95 | $2.1M | Direct | Aug 17, 2026 (3d) |
| Jul 15, 2026 | FORM | ↓ Sell10b5-1 | 4,735 | $118.31 | $560K | Direct | Jul 16, 2026 (1d) |
| Jun 10, 2026 | FORM | ↓ Sell10b5-1 | 11,890 | $121.35 | $1.4M | Direct | Jun 11, 2026 (1d) |
| May 13, 2026 | FORM | ↓ Sell10b5-1 | 9,438 | $126.52 | $1.2M | Direct | May 14, 2026 (1d) |
| Mar 18, 2026 | FORM | ↓ Sell10b5-1 | 10,227 | $95.15 | $973K | Direct | Mar 18, 2026 (0d) |
| Feb 18, 2026 | FORM | ↓ Sell10b5-1 | 8,664 | $94.14 | $816K | Direct | Feb 18, 2026 (0d) |
| Jan 15, 2026 | FORM | ↓ Sell10b5-1 | 13,088 | $76.81 | $1.0M | Direct | Jan 15, 2026 (0d) |
| Jan 6, 2026 | FORM | ↓ Sell10b5-1 | 39,606 | $65.00 | $2.6M | Direct | Jan 6, 2026 (0d) |
| Dec 17, 2025 | FORM | ↓ Sell10b5-1 | 7,669 | $56.36 | $432K | Direct | Dec 17, 2025 (0d) |
| Nov 19, 2025 | FORM | ↓ Sell10b5-1 | 8,403 | $50.06 | $421K | Direct | Nov 19, 2025 (0d) |
| Jul 1, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $34.03 | $136K | Direct | Jul 2, 2025 (1d) |
| Jun 2, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $29.83 | $119K | Direct | Jun 3, 2025 (1d) |
| May 1, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $31.72 | $127K | Direct | May 1, 2025 (0d) |
| Apr 1, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $28.24 | $113K | Direct | Apr 1, 2025 (0d) |
| Mar 3, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $33.05 | $132K | Direct | Mar 4, 2025 (1d) |
| Feb 3, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $38.98 | $156K | Direct | Feb 3, 2025 (0d) |
| Jan 2, 2025 | FORM | ↓ Sell10b5-1 | 4,000 | $44.44 | $178K | Direct | Jan 2, 2025 (0d) |
| Dec 2, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $40.59 | $162K | Direct | Dec 2, 2024 (0d) |
| Nov 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $38.81 | $155K | Direct | Nov 4, 2024 (3d) |
| Oct 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $45.28 | $181K | Direct | Oct 2, 2024 (1d) |
| Sep 3, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $46.31 | $185K | Direct | Sep 4, 2024 (1d) |
| Aug 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $50.93 | $204K | Direct | Aug 5, 2024 (4d) |
| Jul 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $59.00 | $236K | Direct | Jul 2, 2024 (1d) |
| Jun 3, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $54.37 | $217K | Direct | Jun 4, 2024 (1d) |
| May 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $43.75 | $175K | Direct | May 2, 2024 (1d) |
| Apr 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $45.94 | $184K | Direct | Apr 2, 2024 (1d) |
| Mar 1, 2024 | FORM | ↓ Sell10b5-1 | 4,000 | $43.38 | $174K | Direct | Mar 4, 2024 (3d) |
| Feb 13, 2023 | FORM | ↓ Sell | 10,000 | $31.97 | $320K | Direct | Feb 15, 2023 (2d) |
| Nov 5, 2021 | FORM | ↓ Sell | 25,000 | $44.60 | $1.1M | Direct | Nov 8, 2021 (3d) |
| May 26, 2021 | FORM | ↓ Sell | 15,010 | $34.68 | $521K | Direct | May 26, 2021 (0d) |
| May 12, 2021 | FORM | ↓ Sell | 50,000 | $34.98 | $1.7M | Direct | May 12, 2021 (0d) |
| Feb 24, 2021 | FORM | ↓ Sell | 15,000 | $46.95 | $704K | Direct | Feb 24, 2021 (0d) |
| Feb 10, 2021 | FORM | ↓ Sell | 50,000 | $46.18 | $2.3M | Direct | Feb 11, 2021 (1d) |
| Nov 19, 2020 | FORM | ↓ Sell | 14,112 | $38.74 | $547K | Direct | Nov 20, 2020 (1d) |
| Nov 5, 2020 | FORM | ↓ Sell | 50,000 | $32.54 | $1.6M | Direct | Nov 6, 2020 (1d) |
| Sep 8, 2020 | FORM | ↓ Sell | 50,000 | $23.77 | $1.2M | Direct | Sep 9, 2020 (1d) |
| Sep 3, 2020 | FORM | ↓ Sell | 50,000 | $26.36 | $1.3M | Direct | Sep 4, 2020 (1d) |
| Jun 2, 2020 | FORM | ↓ Sell | 16,000 | $25.12 | $402K | Direct | Jun 3, 2020 (1d) |
| May 12, 2020 | FORM | ↓ Sell | 50,000 | $24.50 | $1.2M | Direct | May 12, 2020 (0d) |
| Mar 2, 2020 | FORM | ↓ Sell | 15,856 | $22.16 | $351K | Direct | Mar 4, 2020 (2d) |
| Feb 10, 2020 | FORM | ↓ Sell | 50,000 | $25.91 | $1.3M | Direct | Feb 12, 2020 (2d) |
| Dec 2, 2019 | FORM | ↓ Sell | 14,976 | $22.82 | $342K | Direct | Dec 4, 2019 (2d) |
| Nov 12, 2019 | FORM | ↓ Sell | 50,000 | $22.50 | $1.1M | Direct | Nov 13, 2019 (1d) |
| Sep 5, 2019 | FORM | ↓ Sell | 14,835 | $18.03 | $267K | Direct | Sep 6, 2019 (1d) |
| Sep 4, 2019 | FORM | ↓ Sell | 50,000 | $17.28 | $864K | Direct | Sep 5, 2019 (1d) |
| May 31, 2016 | FORM | ↓ Sell | 3,401 | $7.33 | $25K | Direct | Jun 2, 2016 (2d) |
| May 9, 2016 | FORM | ↓ Sell | 12,697 | $6.82 | $87K | Direct | May 9, 2016 (0d) |
| May 3, 2016 | FORM | ↓ Sell | 32,857 | $7.14 | $235K | Direct | May 3, 2016 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other FORM insiders
Open-market trades in the last 12 months
About Mike Slessor's insider trades
Mike Slessor is CEO at Formfactor (FORM). Since Nov 7, 2013, Mike has reported no open-market purchases and 57 sales worth $35.8M on SEC Form 4. In the last 12 months: 12 sales ($14.7M).
29 sales (49% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include option exercises (65 filings), shares withheld for taxes (47 filings), grants and awards (26 filings), gifts (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every FORM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.