CLNN · Insider Trading
Clene Inc. Common Stock
Every open-market purchase and sale reported by CLNN 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 |
|---|---|---|---|---|---|
| 2026-10-21 | Mark Mortenson | Chief Science Officer | A | +30,000 deriv. | — |
| 2026-10-21 | Morgan R Brown | Chief Financial Officer | A | +20,000 deriv. | — |
| 2026-10-21 | Robert Dee Etherington | President & CEO | A | +55,000 deriv. | — |
| 2026-09-18 | David J Matlin | Director | A | +434,451 | +$1.42M |
| 2026-09-18 | Alison Mosca | Director | A | +198,171 | +$650.00K |
| 2026-09-18 | Robert Dee Etherington | President & CEO | A | +15,244 | +$50.00K |
| 2026-08-14 | Arjun JJ Desai | Director | A | +3,674 deriv. | — |
| 2026-08-14 | Alison Mosca | Director | A | +4,872 deriv. | — |
| 2026-08-14 | Matthew Kiernan | Director | A | +3,195 deriv. | — |
| 2026-08-14 | Vallerie McLaughlin | Director | A | +3,514 deriv. | — |
| 2026-08-14 | Jonathon Gay | Director | A | +3,794 deriv. | — |
| 2026-08-14 | Shalom Jacobovitz | Director | A | +4,752 deriv. | — |
| 2026-08-14 | Reed N Wilcox | Director | A | +3,514 deriv. | — |
| 2026-08-14 | David J Matlin | Director | A | +6,230 deriv. | — |
| 2026-08-06 | Chidozie Ugwumba | 10%+ Owner | J | −799,358 deriv. | — |
| 2026-08-06 | Chidozie Ugwumba | 10%+ Owner | J | −799,358 deriv. | — |
| 2026-06-15 | Morgan R Brown | Chief Financial Officer | A | +15,000 deriv. | — |
| 2026-06-15 | Mark Mortenson | Chief Science Officer | A | +45,000 deriv. | — |
| 2026-06-15 | Robert Dee Etherington | President & CEO | A | +65,000 deriv. | — |
| 2026-05-22 | Jonathon Gay | Director | A | +3,728 deriv. | — |
| 2026-05-22 | Matthew Kiernan | Director | A | +3,376 deriv. | — |
| 2026-05-22 | David J Matlin | Director | A | +5,159 deriv. | — |
| 2026-05-22 | Alison Mosca | Director | A | +4,361 deriv. | — |
| 2026-05-22 | Shalom Jacobovitz | Director | A | +4,291 deriv. | — |
| 2026-05-22 | Arjun JJ Desai | Director | A | +3,658 deriv. | — |
| 2026-05-22 | Vallerie McLaughlin | Director | A | +3,564 deriv. | — |
| 2026-05-22 | Reed N Wilcox | Director | A | +3,564 deriv. | — |
| 2026-05-13 | Chidozie Ugwumba | 10%+ Owner | Sell | −95,473 | −$604.13K |
| 2026-05-05 | Chidozie Ugwumba | 10%+ Owner | Sell | −78,679 | −$530.44K |
| 2026-04-22 | Chidozie Ugwumba | 10%+ Owner | Sell | −65,663 | −$403.08K |
| 2026-04-17 | Chidozie Ugwumba | 10%+ Owner | Sell | −39,162 | −$251.90K |
| 2026-04-06 | Chidozie Ugwumba | 10%+ Owner | Sell | −24,925 | −$119.89K |
| 2026-04-01 | Chidozie Ugwumba | 10%+ Owner | Sell | −4,278 | −$21.26K |
| 2026-03-26 | Chidozie Ugwumba | 10%+ Owner | Sell | −17,909 | −$99.51K |
| 2026-02-20 | Reed N Wilcox | Director | A | +3,306 deriv. | — |
| 2026-02-20 | Alison Mosca | Director | A | +4,201 deriv. | — |
| 2026-02-20 | Matthew Kiernan | Director | A | +2,755 deriv. | — |
| 2026-02-20 | Vallerie McLaughlin | Director | A | +3,030 deriv. | — |
| 2026-02-20 | Arjun JJ Desai | Director | A | +3,168 deriv. | — |
| 2026-02-20 | Shalom Jacobovitz | Director | A | +4,098 deriv. | — |
| 2026-02-20 | David J Matlin | Director | A | +5,372 deriv. | — |
| 2026-02-20 | Jonathon Gay | Director | A | +3,271 deriv. | — |
| 2026-02-05 | Chidozie Ugwumba | 10%+ Owner | Sell | −5,559 | −$22.79K |
| 2026-02-02 | Chidozie Ugwumba | 10%+ Owner | Sell | −24,770 | −$104.86K |
| 2026-01-28 | Chidozie Ugwumba | 10%+ Owner | Sell | −19,274 | −$96.04K |
| 2026-01-23 | Chidozie Ugwumba | 10%+ Owner | Sell | −18,221 | −$96.66K |
| 2026-01-23 | Robert Dee Etherington | President & CEO | A | +75,000 deriv. | — |
| 2026-01-23 | Morgan R Brown | Chief Financial Officer | A | +35,000 deriv. | — |
| 2026-01-23 | Mark Mortenson | Chief Science Officer | A | +75,000 deriv. | — |
| 2026-01-21 | Chidozie Ugwumba | 10%+ Owner | Sell | −32,474 | −$161.52K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| David J Matlin | Director | 919,775 | $3.53M |
| Alison Mosca | Director | 480,644 | $1.85M |
| Chidozie Ugwumba | 10%+ Owner | 103,417 | $397.12K |
| Robert Dee Etherington | President & CEO | 56,029 | $215.15K |
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 CLNN 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.