TKNO (Alpha Teknova, Inc. Common Stock)
Insider Trading Activity
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.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-16 | MARTHA J DEMSKI | Director | J | — | — |
| 2026-06-02 | BRETT ROBERTSON | Director | A | — | — |
| 2026-06-02 | MARTHA J DEMSKI | Director | A | — | — |
| 2026-06-02 | Alexander Vos | Director | A | — | — |
| 2026-03-09 | Stephen Gunstream | President and CEO | Buy | — | — |
| 2026-03-09 | Matthew Lowell | Chief Financial Officer | Buy | — | — |
| 2026-03-09 | Damon Terrill | General Counsel and CCO | A | — | — |
| 2025-07-01 | MARTHA J DEMSKI | Director | A | — | — |
| 2025-07-01 | MARTHA J DEMSKI | Director | Sell | — | — |
| 2025-07-01 | Alexander Vos | Director | A | — | — |
| 2025-07-01 | BRETT ROBERTSON | Director | A | — | — |
| 2025-06-25 | MARTHA J DEMSKI | Director | A | — | — |
| 2025-06-25 | Damon Terrill | General Counsel and CCO | A | — | — |
| 2025-06-25 | Alexander Vos | Director | A | — | — |
| 2025-06-25 | Matthew Lowell | Chief Financial Officer | A | — | — |
| 2025-06-25 | BRETT ROBERTSON | Director | A | — | — |
| 2025-06-25 | Stephen Gunstream | President and CEO | A | — | — |
| 2025-02-27 | BRETT ROBERTSON | Director | J | — | — |
| 2024-07-16 | Matthew Lowell | Chief Financial Officer | Buy | — | — |
| 2024-07-16 | Stephen Gunstream | President and CEO | Buy | — | — |
| 2024-07-16 | Telegraph Hill Partners Management Company, LLC | 10%+ Owner | Buy | — | — |
| 2024-06-27 | BRETT ROBERTSON | Director | A | — | — |
| 2024-06-27 | Alexander Vos | Director | A | — | — |
| 2024-06-27 | MARTHA J DEMSKI | Director | A | — | — |
| 2024-02-27 | Paul David Grossman | Director | Buy | — | — |
| 2024-02-06 | Robert McNamara | Director | MIXED | — | — |
| 2024-02-02 | BRETT ROBERTSON | Director | A | — | — |
| 2024-02-02 | Alexander Vos | Director | A | — | — |
| 2023-12-01 | Ken Gelhaus | Chief Commercial Officer | Buy | — | — |
| 2023-11-15 | Lisa Hood | Chief People Officer | J | — | — |
| 2023-09-21 | Matthew Lowell | Chief Financial Officer | Buy | — | — |
| 2023-09-21 | Stephen Gunstream | President and CEO | Buy | — | — |
| 2023-09-21 | Damon Terrill | General Counsel and CCO | Buy | — | — |
| 2023-09-21 | J MATTHEW MACKOWSKI | Director | Buy | — | — |
| 2023-09-21 | Telegraph Hill Partners Management Company, LLC | 10%+ Owner | Buy | — | — |
| 2023-09-05 | MARTHA J DEMSKI | Director | A | — | — |
| 2023-06-14 | Lisa Hood | Chief People Officer | Sell | — | — |
| 2023-05-31 | Irene Davis | Director | Buy | — | — |
| 2023-05-31 | Ted Davis | Director | Buy | — | — |
| 2023-05-17 | Lisa Hood | Chief People Officer | Sell | — | — |
| 2023-05-16 | Ken Gelhaus | Chief Commercial Officer | Buy | — | — |
| 2023-05-16 | Stephen Gunstream | President and CEO | Buy | — | — |
| 2023-05-16 | Lisa Hood | Chief People Officer | Buy | — | — |
| 2023-03-01 | Lisa Hood | Chief People Officer | A | — | — |
| 2023-03-01 | Stephen Gunstream | President and CEO | A | — | — |
| 2023-03-01 | Ken Gelhaus | Chief Commercial Officer | A | — | — |
| 2023-03-01 | Damon Terrill | General Counsel and CCO | A | — | — |
| 2023-03-01 | Matthew Lowell | Chief Financial Officer | A | — | — |
| 2022-11-17 | Matthew Lowell | Chief Financial Officer | A | — | — |
| 2022-11-17 | Damon Terrill | General Counsel and CCO | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 22,829,504 | — |
| — | Director | 3,574,559 | — |
| — | Director | 3,574,559 | — |
| — | President and CEO | 269,497 | — |
| — | Chief Financial Officer | 168,376 | — |
| — | Director | 107,472 | — |
| — | Director | 102,472 | — |
| — | General Counsel and CCO | 41,027 | — |
| — | Director | 28,172 | — |
| — | Chief Commercial Officer | 22,924 | — |
| — | Chief People Officer | 18,834 | — |
| — | Director | 12,000 | — |
| — | Director | 9,212 | — |
| — | Director | 5,000 | — |
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.