As of March 23, 2026, the three largest insider holders of CLNN are John Henry Stevens (Director, 800.20K shares), Resonance Llc General (TenPercentOwner, 704.59K shares), Reed N Wilcox (Director, 575.14K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| John Henry Stevens | 800,204 | 0 | 27 Jun, 2023 | |
| Resonance Llc General | 704,591 | 0 | 21 Aug, 2025 | |
| Reed N Wilcox | 575,145 | 0 | 14 Nov, 2022 | |
| Chidozie Ugwumba | 0 | 550,000 | 05 Feb, 2026 | |
| David J Matlin | 477,824 | 0 | 13 Jan, 2026 | |
| Alison Mosca | 0 | 280,500 | 13 Jan, 2026 | |
| David J Matlin | 0 | 150,000 | 08 Dec, 2021 | |
| Jonathon Gay | 0 | 105,625 | 20 Jun, 2023 | |
| Jonathon Gay | 68,745 | 0 | 17 May, 2022 | |
| Robert Dee Etherington | Chief Executive Officer | 40,149 | 0 | 01 Oct, 2024 |
| Alison Mosca | 39,476 | 0 | 16 Jun, 2022 | |
| Mark Mortenson | Chief Science Officer | 28,949 | 0 | 01 Oct, 2024 |
| Robert Dee Etherington | Chief Executive Officer | 0 | 25,000 | 27 Jun, 2023 |
| Shalom Jacobovitz | 20,838 | 0 | 15 Jul, 2021 | |
| Robert Glanzman | Chief Medical Officer | 10,564 | 0 | 18 May, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 19 Feb, 2026 | Jonathon Gay | stock option | A | 3,271 | $0.00 | 3,271 | D | A |
| 19 Feb, 2026 | Matthew Kiernan | stock option | A | 2,755 | $0.00 | 2,755 | D | A |
| 19 Feb, 2026 | Alison Mosca | stock option | A | 4,201 | $0.00 | 4,201 | D | A |
| 19 Feb, 2026 | David J Matlin | stock option | A | 5,372 | $0.00 | 5,372 | D | A |
| 19 Feb, 2026 | Arjun Jj Desai | stock option | A | 3,168 | $0.00 | 3,168 | D | A |
| 19 Feb, 2026 | Shalom Jacobovitz | stock option | A | 4,098 | $0.00 | 4,098 | D | A |
| 19 Feb, 2026 | Vallerie Mclaughlin | stock option | A | 3,030 | $0.00 | 3,030 | D | A |
| 19 Feb, 2026 | Reed N Wilcox | stock option | A | 3,306 | $0.00 | 3,306 | D | A |
| 03 Feb, 2026 | Chidozie Ugwumba | Common Stock | D | 5,559 | $4.10 | 550,000 | I | S |
| 29 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 15,284 | $4.32 | 565,045 | I | S |
| 30 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 5,686 | $4.13 | 559,359 | I | S |
| 02 Feb, 2026 | Chidozie Ugwumba | Common Stock | D | 3,800 | $4.04 | 555,559 | I | S |
| 26 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 6,418 | $5.02 | 593,185 | I | S |
| 27 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 4,139 | $5.08 | 589,046 | I | S |
| 28 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 8,717 | $4.91 | 580,329 | I | S |
| 22 Jan, 2026 | Robert Dee Etherington | stock option | A | 75,000 | $0.00 | 75,000 | D | A |
| 22 Jan, 2026 | Mark Mortenson | stock option | A | 75,000 | $0.00 | 75,000 | D | A |
| 22 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 12,665 | $5.32 | 605,159 | I | S |
| 23 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 5,556 | $5.27 | 599,603 | I | S |
| 16 Jan, 2026 | Chidozie Ugwumba | Common Stock | D | 7,923 | $5.13 | 642,375 | I | S |