St. Dennis Thomas, a director at FormFactor Inc. ($FORM), made four open market sales of company shares over the past year, totaling about $891,000. His latest sale occurred on February 10, 2026. Among 11,678 insiders tracking open market sales, his activity ranks 5,203rd, well below the average of $8.6 million per seller and six transactions. He recorded no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 10, 2026 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | S | Common Stock | 1830 | $94.24 | 31,526.0000 | 78,313,000 | 5.49% | 0.00% |
| Feb. 10, 2026 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | S | Common Stock | 5601 | $93.71 | 33,356.0000 | 78,313,000 | 14.38% | 0.01% |
| Nov. 17, 2025 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | S | Common Stock | 2000 | $49.85 | 38,957.0000 | 77,734,000 | 4.88% | 0.00% |
| May 29, 2025 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | S | Common Stock | 3000 | $31.24 | 40,957.0000 | 78,437,000 | 6.82% | 0.00% |
| May 16, 2025 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | A | Common Stock | 6528 | $0.00 | 43,957.0000 | 78,437,000 | 17.44% | 0.01% |
| May 15, 2025 | AXCELIS TECHNOLOGIES INC | $ACLS | St Dennis Thomas | Not found | A | Common Stock | 3586 | $0.00 | 17,155.0000 | 32,335,000 | 26.43% | 0.01% |
| May 9, 2025 | VEECO INSTRUMENTS INC | $VECO | St Dennis Thomas | Not found | A | Common Stock | 8291 | $0.00 | 60,152.0000 | 60,234,000 | 15.99% | 0.01% |
| Nov. 5, 2024 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | S | Common Stock | 3100 | $39.11 | 37,429.0000 | 78,495,000 | 7.65% | 0.00% |
| May 17, 2024 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | A | Common Stock | 3828 | $0.00 | 40,529.0000 | 78,159,000 | 10.43% | 0.00% |
| May 15, 2024 | AXCELIS TECHNOLOGIES INC | $ACLS | St Dennis Thomas | Not found | A | Common Stock | 1662 | $0.00 | 13,569.0000 | 32,926,000 | 13.96% | 0.01% |
| May 15, 2024 | AXCELIS TECHNOLOGIES INC | $ACLS | St Dennis Thomas | Not found | A | Common Stock | 1162 | $0.00 | 13,069.0000 | 32,926,000 | 9.76% | 0.00% |
| May 13, 2024 | VEECO INSTRUMENTS INC | $VECO | St Dennis Thomas | Not found | S | Common Stock | 4000 | $37.72 | 51,861.0000 | 60,764,000 | 7.16% | 0.01% |
| May 10, 2024 | FORMFACTOR INC | $FORM | St Dennis Thomas | Director | S | Common Stock | 2000 | $56.30 | 36,701.0000 | 78,159,000 | 5.17% | 0.00% |
| May 10, 2024 | VEECO INSTRUMENTS INC | $VECO | St Dennis Thomas | Not found | A | Common Stock | 3677 | $0.00 | 55,861.0000 | 60,764,000 | 7.05% | 0.01% |
| Nov. 30, 2023 | VEECO INSTRUMENTS INC | $VECO | St Dennis Thomas | Not found | S | Common Stock | 7005 | $28.52 | 52,184.0000 | 59,636,000 | 11.83% | 0.01% |
| May 15, 2023 | AXCELIS TECHNOLOGIES INC | $ACLS | St Dennis Thomas | Director | A | Common Stock | 1282 | $0.00 | 11,907.0000 | 33,293,000 | 12.07% | 0.00% |
| May 12, 2023 | VEECO INSTRUMENTS INC | $VECO | St Dennis Thomas | Not found | A | Common Stock | 6760 | $0.00 | 59,189.0000 | 59,856,000 | 12.89% | 0.01% |
| Feb. 13, 2023 | AXCELIS TECHNOLOGIES INC | $ACLS | St Dennis Thomas | Director | S | Common Stock | 12000 | $127.02 | 10,625.0000 | 33,542,000 | 53.04% | 0.04% |