TKNO · Insider Trading
Alpha Teknova, Inc. Common Stock
Every open-market purchase and sale reported by TKNO officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-16 | Martha J Demski | Director | J | — | — |
| 2026-06-02 | Brett Robertson | Director | A | +55,000 deriv. | — |
| 2026-06-02 | Martha J Demski | Director | A | +55,000 deriv. | — |
| 2026-06-02 | Alexander Vos | Director | A | +55,000 deriv. | — |
| 2026-03-09 | Stephen Gunstream | President and CEO | Buy | +26,000 | +$55.80K |
| 2026-03-09 | Matthew Lowell | Chief Financial Officer | Buy | +40,000 | +$87.62K |
| 2026-03-09 | Damon Terrill | General Counsel and CCO | A | +148,000 deriv. | — |
| 2025-07-01 | Martha J Demski | Director | A | +54,300 deriv. | — |
| 2025-07-01 | Martha J Demski | Director | Sell | −8,000 | −$40.51K |
| 2025-07-01 | Alexander Vos | Director | A | +54,300 deriv. | — |
| 2025-07-01 | Brett Robertson | Director | A | +54,300 deriv. | — |
| 2025-06-25 | Martha J Demski | Director | A | +54,300 | — |
| 2025-06-25 | Damon Terrill | General Counsel and CCO | A | +137,808 deriv. | — |
| 2025-06-25 | Alexander Vos | Director | A | +54,300 | — |
| 2025-06-25 | Matthew Lowell | Chief Financial Officer | A | +169,857 deriv. | — |
| 2025-06-25 | Brett Robertson | Director | A | +54,300 | — |
| 2025-06-25 | Stephen Gunstream | President and CEO | A | +393,663 deriv. | — |
| 2025-02-27 | Brett Robertson | Director | J | +5,000 | — |
| 2024-07-16 | Matthew Lowell | Chief Financial Officer | Buy | +40,322 | +$50.00K |
| 2024-07-16 | Stephen Gunstream | President and CEO | Buy | +80,645 | +$100.00K |
| 2024-07-16 | Telegraph Hill Partners Management Company, LLC | 10%+ Owner | Buy | +48,387,092 | +$60.00M |
| 2024-06-27 | Brett Robertson | Director | A | +20,000 | — |
| 2024-06-27 | Alexander Vos | Director | A | +20,000 | — |
| 2024-06-27 | Martha J Demski | Director | A | +20,000 | — |
| 2024-02-27 | Paul David Grossman | Director | Buy | +9,212 | +$49.50K |
| 2024-02-06 | Robert McNamara | Director | MIXED | — | — |
| 2024-02-02 | Brett Robertson | Director | A | +18,815 | — |
| 2024-02-02 | Alexander Vos | Director | A | +18,815 | — |
| 2023-12-01 | Ken Gelhaus | Chief Commercial Officer | Buy | +3,587 | +$6.22K |
| 2023-11-15 | Lisa Hood | Chief People Officer | J | −15,000 | — |
| 2023-09-21 | Matthew Lowell | Chief Financial Officer | Buy | +54,054 | +$100.00K |
| 2023-09-21 | Stephen Gunstream | President and CEO | Buy | +54,054 | +$100.00K |
| 2023-09-21 | Damon Terrill | General Counsel and CCO | Buy | +27,027 | +$50.00K |
| 2023-09-21 | J Matthew Mackowski | Director | Buy | +810,810 | +$1.50M |
| 2023-09-21 | Telegraph Hill Partners Management Company, LLC | 10%+ Owner | Buy | +32,432,428 | +$60.00M |
| 2023-09-05 | Martha J Demski | Director | A | +56,683 deriv. | — |
| 2023-06-14 | Lisa Hood | Chief People Officer | Sell | −11,400 | −$43.27K |
| 2023-05-31 | Irene Davis | Director | Buy | +2,000 | +$6.43K |
| 2023-05-31 | Ted Davis | Director | Buy | +2,000 | +$6.43K |
| 2023-05-17 | Lisa Hood | Chief People Officer | Sell | −3,119 | −$6.35K |
| 2023-05-16 | Ken Gelhaus | Chief Commercial Officer | Buy | +3,915 | +$6.52K |
| 2023-05-16 | Stephen Gunstream | President and CEO | Buy | +4,665 | +$7.77K |
| 2023-05-16 | Lisa Hood | Chief People Officer | Buy | +3,119 | +$5.20K |
| 2023-03-01 | Lisa Hood | Chief People Officer | A | +14,000 | — |
| 2023-03-01 | Stephen Gunstream | President and CEO | A | +43,125 | — |
| 2023-03-01 | Ken Gelhaus | Chief Commercial Officer | A | +14,000 | — |
| 2023-03-01 | Damon Terrill | General Counsel and CCO | A | +14,000 | — |
| 2023-03-01 | Matthew Lowell | Chief Financial Officer | A | +14,000 | — |
| 2022-11-17 | Matthew Lowell | Chief Financial Officer | A | +33,093 deriv. | — |
| 2022-11-17 | Damon Terrill | General Counsel and CCO | A | +30,000 deriv. | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Stephen Gunstream | President and CEO | 269,497 | $1.79M |
| Matthew Lowell | Chief Financial Officer | 168,376 | $1.12M |
| Brett Robertson | Director | 107,472 | $714.69K |
| Alexander Vos | Director | 102,472 | $681.44K |
| Damon Terrill | General Counsel and CCO | 41,027 | $272.83K |
| Martha J Demski | Director | 12,000 | $79.80K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the TKNO quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.