7 insiders reported 36 Form 4 transactions for MAIA Biotechnology, Inc. (MAIA) over the past 18 months (most recent 2026-09-15). Recent activity: Vitoc Vlad (Chief Executive Officer) Buy 73,000 shares, Guerrero Ramiro (Director) Buy 37,595 shares, Guerrero Ramiro (Director) Buy 8,931 shares, Guerrero Ramiro (Director) Buy 78,239 shares, Guerrero Ramiro (Director) Buy 46,620 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-15 | Vitoc Vlad | Chief Executive Officer | Buy | 73,000 | $100,010 |
| 2026-09-14 | Guerrero Ramiro | Director | Buy | 37,595 | $49,516 |
| 2026-09-01 | Guerrero Ramiro | Director | Buy | 8,931 | $12,414 |
| 2026-09-01 | Guerrero Ramiro | Director | Buy | 78,239 | $108,752 |
| 2026-09-01 | Guerrero Ramiro | Director | Buy | 46,620 | $62,937 |
| 2026-08-26 | Guerrero Ramiro | Director | Buy | 1,794 | $2,386 |
| 2026-08-24 | Guerrero Ramiro | Director | Buy | 11,899 | $16,302 |
| 2026-06-02 | Smith Stan | Director | Buy | 75,000 | $100,500 |
| 2026-06-02 | Vitoc Vlad | Chief Executive Officer | Buy | 72,700 | $101,053 |
| 2026-06-02 | Gryaznov Sergei | Chief Scientific Officer | Buy | 2,000 | $2,700 |
| 2026-01-12 | Smith Stan | Director | Buy | 2,700 | $9,963 |
| 2026-01-12 | Smith Stan | Director | Buy | 20,000 | $0 |
| 2025-12-23 | CHAOUKI STEVEN M | Director | Buy | 40,849 | $49,836 |
| 2025-12-23 | Louie Ngar Yee | Director | Buy | 81,699 | $99,673 |
| 2025-12-23 | Smith Stan | Director | Buy | 57,189 | $69,771 |
| 2025-12-09 | Smith Stan | Director | Buy | 4,580 | $5,496 |
| 2025-12-09 | Smith Stan | Director | Buy | 4,580 | $5,450 |
| 2025-12-09 | Smith Stan | Director | Buy | 4,580 | $5,496 |
| 2025-12-04 | Vitoc Vlad | Chief Executive Officer | Buy | 22,000 | $23,100 |
| 2025-12-04 | Vitoc Vlad | Chief Executive Officer | Buy | 10,500 | $10,185 |
| 2025-12-04 | Vitoc Vlad | Chief Executive Officer | Buy | 50,000 | $57,000 |
| 2025-12-01 | Vitoc Vlad | Chief Executive Officer | Buy | 22,000 | $23,100 |
| 2025-12-01 | Luput Cristian | Director | Buy | 20,000 | $21,600 |
| 2025-12-01 | Luput Cristian | Director | Buy | 18,145 | $20,141 |
| 2025-12-01 | Vitoc Vlad | Chief Executive Officer | Buy | 50,000 | $57,000 |
Source: SEC Form 4 filings · as of 2026-09-15