According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Axsome Therapeutics are Director Mark Coleman (452.07K shares), Director Roger Jeffs (57.51K shares), Chief Financial Officer Nick Pizzie (42.33K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Mark Coleman | 452,068 | 09 Sep, 2025 | |
| Roger Jeffs | 57,510 | 02 Sep, 2025 | |
| Nick Pizzie | Chief Financial Officer | 42,329 | 14 Feb, 2025 |
| Mark E Saad | 10,102 | 02 Jan, 2026 | |
| Herriot Tabuteau | Chief Executive Officer | 7,229 | 07 Jan, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 07 Jan, 2026 | Herriot Tabuteau | Common Stock | A | 31,261 | $8.02 | 38,490 | D | M |
| 07 Jan, 2026 | Herriot Tabuteau | Common Stock | D | 31,261 | $170.38 | 7,229 | D | S |
| 06 Jan, 2026 | Herriot Tabuteau | Common Stock | D | 29,450 | $172.33 | 7,229 | D | S |
| 06 Jan, 2026 | Herriot Tabuteau | Common Stock | A | 29,450 | $8.02 | 36,679 | D | M |
| 05 Jan, 2026 | Herriot Tabuteau | Common Stock | A | 78,703 | $8.02 | 85,932 | D | M |
| 05 Jan, 2026 | Herriot Tabuteau | Common Stock | D | 78,703 | $171.28 | 7,229 | D | S |
| 31 Dec, 2025 | Mark E Saad | Common Stock | A | 6,231 | $8.02 | 16,233 | D | M |
| 31 Dec, 2025 | Mark E Saad | Common Stock | A | 31,346 | $4.95 | 41,348 | D | M |
| 31 Dec, 2025 | Mark E Saad | Common Stock | D | 6,231 | $165.18 | 10,002 | D | S |
| 31 Dec, 2025 | Mark E Saad | - | - | 41,348 | D | |||
| 31 Dec, 2025 | Mark E Saad | - | - | 10,002 | D | |||
| 31 Dec, 2025 | Mark E Saad | - | - | 16,233 | D | |||
| 31 Dec, 2025 | Mark E Saad | Common Stock | D | 31,346 | $165.18 | 10,002 | D | S |
| 31 Dec, 2025 | Mark E Saad | - | - | 10,002 | D | |||
| 04 Dec, 2025 | Herriot Tabuteau | Common Stock | A | 10,558 | $8.02 | 17,787 | D | M |
| 04 Dec, 2025 | Herriot Tabuteau | Common Stock | D | 10,558 | $148.18 | 7,229 | D | S |
| 03 Dec, 2025 | Herriot Tabuteau | Common Stock | A | 20,163 | $8.02 | 27,392 | D | M |
| 03 Dec, 2025 | Herriot Tabuteau | Common Stock | D | 20,163 | $146.94 | 7,229 | D | S |
| 02 Dec, 2025 | Herriot Tabuteau | Common Stock | D | 49,252 | $144.59 | 7,229 | D | S |
| 02 Dec, 2025 | Herriot Tabuteau | Common Stock | A | 49,252 | $8.02 | 56,481 | D | M |