According to recent filings covering the 90 days ending February 19, 2026, the three most significant insider holders at Cyclerion Therapeutics are Director Peter M Hecht (559.20K shares), President Regina Margaret Graul (100.30K shares), Director Michael J Higgins (30.74K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Peter M Hecht | 559,203 | 27 Mar, 2025 | |
| Regina Margaret Graul | President | 100,303 | 26 Jan, 2024 |
| Michael J Higgins | 30,740 | 27 Mar, 2025 | |
| Errol B Desouza | 30,000 | 04 Dec, 2023 | |
| Steven Hyman | 20,000 | 04 Dec, 2023 | |
| Terrance Mcguire | 5,552 | 04 Dec, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 25 Mar, 2025 | Peter M Hecht | Common Stock | A | 181,818 | $2.75 | 559,203 | D | A |
| 25 Mar, 2025 | Michael J Higgins | Common Stock | A | 9,090 | $2.75 | 30,740 | D | A |
| 21 Nov, 2024 | Path Capital Lp Slate | - | - | 0 | I | |||
| 21 Nov, 2024 | Path Capital Lp Slate | Common Stock, no par value | D | 357,880 | $1.55 | 0 | I | S |
| 01 Jan, 2024 | Peter M Hecht | Common Stock | A | 15,000 | $0.00 | 377,385 | D | A |
| 01 Jan, 2024 | Regina Margaret Graul | Common Stock | A | 50,000 | $0.00 | 100,303 | D | A |
| 01 Jan, 2024 | Regina Margaret Graul | - | - | 100,303 | D | |||
| 01 Dec, 2023 | Peter M Hecht | Common Stock | A | 15,000 | $0.00 | 362,385 | D | A |
| 30 Nov, 2023 | Terrance Mcguire | Common Stock | A | 5,000 | $0.00 | 5,552 | D | A |
| 30 Nov, 2023 | Errol B Desouza | Common Stock | A | 20,000 | $0.00 | 50,000 | D | A |
| 30 Nov, 2023 | Errol B Desouza | Common Stock | A | 30,000 | $0.00 | 30,000 | D | A |
| 30 Nov, 2023 | Errol B Desouza | - | - | 30,000 | D | |||
| 30 Nov, 2023 | Peter M Hecht | Common Stock | A | 20,000 | $0.00 | 347,385 | D | A |
| 30 Nov, 2023 | Steven Hyman | - | - | 20,000 | D | |||
| 30 Nov, 2023 | Steven Hyman | Common Stock | A | 20,000 | $0.00 | 20,000 | D | A |
| 09 Aug, 2023 | Terrance Mcguire | Common Stock | D | 8 | $3.40 | 0 | I | S |
| 09 Aug, 2023 | Terrance Mcguire | - | - | 0 | I | |||
| 19 May, 2023 | Peter M Hecht | Common Stock | A | 225,000 | $8.68 | 327,385 | D | A |
| 19 May, 2023 | Peter M Hecht | - | - | 327,385 | D | |||
| 03 Jun, 2021 | Terrance Mcguire | - | - | 34,866 | I |