Dennis Thomas St insider trades: Formfactor (FORM) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Dennis reports to the SEC
Open-market buys and sales
56 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 15, 2026 | FORM | ↓ Sell | 2,800 | $151.49 | $424K | Direct | Jun 16, 2026 (1d) |
| May 22, 2026 | ACLS | ↓ Sell | 900 | $155.37 | $140K | Direct | May 26, 2026 (4d) |
| May 19, 2026 | FORM | ↓ Sell | 1,000 | $115.84 | $116K | Direct | May 21, 2026 (2d) |
| May 11, 2026 | VECO | ↓ Sell | 1,400 | $61.93 | $87K | Direct | May 13, 2026 (2d) |
| Feb 10, 2026 | FORM | ↓ Sell | 7,431 | $93.84 | $697K | Direct | Feb 11, 2026 (1d) |
| Nov 17, 2025 | FORM | ↓ Sell | 2,000 | $49.85 | $100K | Direct | Nov 17, 2025 (0d) |
| May 29, 2025 | FORM | ↓ Sell | 3,000 | $31.24 | $94K | Direct | May 30, 2025 (1d) |
| Nov 5, 2024 | FORM | ↓ Sell | 3,100 | $39.11 | $121K | Direct | Nov 6, 2024 (1d) |
| May 13, 2024 | VECO | ↓ Sell | 4,000 | $37.72 | $151K | Direct | May 14, 2024 (1d) |
| May 10, 2024 | FORM | ↓ Sell | 2,000 | $56.30 | $113K | Direct | May 13, 2024 (3d) |
| Nov 30, 2023 | VECO | ↓ Sell | 7,005 | $28.52 | $200K | Direct | Dec 1, 2023 (1d) |
| Nov 14, 2023 | FORM | ↓ Sell | 3,792 | $38.24 | $145K | Direct | Nov 15, 2023 (1d) |
| Feb 16, 2023 | FORM | ↓ Sell | 13,000 | $32.31 | $420K | Direct | Feb 17, 2023 (1d) |
| Feb 13, 2023 | ACLS | ↓ Sell | 12,000 | $127.02 | $1.5M | Direct | Feb 13, 2023 (0d) |
| Nov 18, 2022 | ACLS | ↓ Sell | 3,000 | $76.66 | $230K | Direct | Nov 18, 2022 (0d) |
| May 16, 2022 | VECO | ↑ Buy | 2,500 | $21.60 | $54K | Direct | May 17, 2022 (1d) |
| Feb 10, 2022 | ACLS | ↓ Sell | 3,000 | $72.81 | $218K | Direct | Feb 10, 2022 (0d) |
| Feb 8, 2022 | FORM | ↓ Sell | 6,000 | $41.63 | $250K | Direct | Feb 9, 2022 (1d) |
| Aug 30, 2021 | ACLS | ↓ Sell | 3,500 | $50.32 | $176K | Direct | Aug 30, 2021 (0d) |
| May 11, 2020 | FORM | ↓ Sell | 6,000 | $24.78 | $149K | Direct | May 12, 2020 (1d) |
| May 11, 2020 | ACLS | ↓ Sell | 6,000 | $26.61 | $160K | Direct | May 11, 2020 (0d) |
| Feb 10, 2020 | FORM | ↓ Sell | 10,000 | $25.94 | $259K | Direct | Feb 12, 2020 (2d) |
| Feb 10, 2020 | ACLS | ↓ Sell | 8,500 | $28.27 | $240K | Direct | Feb 10, 2020 (0d) |
| Nov 20, 2019 | FORM | ↓ Sell | 5,000 | $22.68 | $113K | The St. Dennis 1998 Trust | Nov 22, 2019 (2d) |
| Aug 20, 2019 | FORM | ↓ Sell | 3,000 | $17.26 | $52K | Direct | Aug 21, 2019 (1d) |
| Feb 20, 2019 | FORM | ↓ Sell | 8,000 | $15.99 | $128K | Direct | Feb 21, 2019 (1d) |
| Feb 20, 2019 | ACLS | ↓ Sell | 5,000 | $22.43 | $112K | Direct | Feb 20, 2019 (0d) |
| Mar 6, 2018 | FORM | ↓ Sell | 20,867 | $13.58 | $283K | Direct | Mar 7, 2018 (1d) |
| Jun 14, 2017 | FORM | ↓ Sell | 400 | $13.93 | $6K | Direct | Jun 15, 2017 (1d) |
| Jun 5, 2017 | FORM | ↓ Sell | 285,333 | $14.61 | $4.2M | Direct | Jun 6, 2017 (1d) |
| May 11, 2017 | FORM | ↓ Sell | 13,962 | $13.55 | $189K | Direct | May 15, 2017 (4d) |
| May 9, 2017 | FORM | ↓ Sell | 62,088 | $13.77 | $855K | Direct | May 9, 2017 (0d) |
| Feb 24, 2017 | FORM | ↓ Sell | 20,297 | $11.68 | $237K | Direct | Feb 24, 2017 (0d) |
| Feb 21, 2017 | FORM | ↓ Sell | 196,682 | $11.83 | $2.3M | Direct | Feb 21, 2017 (0d) |
| Feb 15, 2017 | FORM | ↓ Sell | 156,971 | $12.07 | $1.9M | Direct | Feb 15, 2017 (0d) |
| Aug 5, 2016 | FORM | ↓ Sell | 23,120 | $10.51 | $243K | Direct | Aug 9, 2016 (4d) |
| May 21, 2015 | FORM | ↓ Sell | 130,000 | $8.91 | $1.2M | Direct | May 21, 2015 (0d) |
| May 7, 2015 | FORM | ↓ Sell | 10,606 | $8.28 | $88K | Direct | May 8, 2015 (1d) |
| May 6, 2015 | FORM | ↓ Sell | 10,607 | $8.25 | $88K | Direct | May 7, 2015 (1d) |
| May 5, 2015 | FORM | ↓ Sell | 92,782 | $8.42 | $782K | Direct | May 6, 2015 (1d) |
| Mar 9, 2015 | FORM | ↓ Sell | 90,000 | $9.16 | $824K | Direct | Mar 9, 2015 (0d) |
| Mar 2, 2015 | FORM | ↓ Sell | 13,548 | $10.15 | $137K | Direct | Mar 3, 2015 (1d) |
| Aug 8, 2014 | FORM | ↑ Buy | 5,000 | $6.83 | $34K | Direct | Aug 14, 2014 (6d) |
| May 7, 2014 | FORM | ↓ Sell | 9,904 | $5.77 | $57K | Direct | May 8, 2014 (1d) |
| Feb 28, 2014 | FORM | ↓ Sell | 13,528 | $7.11 | $96K | Direct | Feb 28, 2014 (0d) |
| Feb 11, 2014 | FORM | ↓ Sell | 6,990 | $6.47 | $45K | Direct | Feb 12, 2014 (1d) |
| Sep 16, 2013 | FORM | ↓ Sell | 5,689 | $7.26 | $41K | Direct | Sep 17, 2013 (1d) |
| May 7, 2013 | FORM | ↓ Sell | 1,868 | $5.14 | $10K | Direct | May 8, 2013 (1d) |
| Feb 12, 2013 | FORM | ↓ Sell | 7,500 | $4.61 | $35K | Direct | Feb 13, 2013 (1d) |
| Sep 14, 2012 | FORM | ↓ Sell | 5,560 | $5.46 | $30K | Direct | Sep 17, 2012 (3d) |
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 Dennis Thomas St's insider trades
Dennis Thomas St is a director at Formfactor (FORM). Since Aug 31, 2007, Dennis has reported 2 open-market purchases worth $88K and 54 sales worth $21.6M on SEC Form 4. In the last 12 months: 6 sales ($1.6M).
Their filings also include grants and awards (52 filings), option exercises (35 filings), shares withheld for taxes (9 filings), gifts (1 filing). 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.