MAIA MAIA Biotechnology, Inc.
MAIA Biotechnology, Inc. (MAIA) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
Where they traded
Last open-market purchase: September 14, 2026 , by Vitoc Vlad .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Vitoc Vlad | Chief Executive Officer | Buy | 73,000 | $1.37 | $100.0K | 1,049,121 | |
| Guerrero Ramiro | Director | Buy | 46,620 | $1.35 | $62.9K | 735,701 | |
| Guerrero Ramiro | Director | Buy | 78,239 | $1.39 | $108.8K | 689,081 | |
| Guerrero Ramiro | Director | Buy | 8,931 | $1.39 | $12.4K | 610,842 | |
| Guerrero Ramiro | Director | Buy | 1,794 | $1.33 | $2.4K | 601,911 | |
| Guerrero Ramiro | Director | Buy | 11,899 | $1.37 | $16.3K | 600,117 | |
| Vitoc Vlad | Chief Executive Officer | Buy | 72,700 | $1.39 | $100.9K | 976,121 | |
| Smith Stan | Director | Buy | 75,000 | $1.34 | $100.2K | 1,519,178 | |
| Gryaznov Sergei | Chief Scientific Officer | Buy | 2,000 | $1.34 | $2.7K | 46,511 | |
| Louie Ngar Yee | Director | Buy | 81,699 | $1.22 | $100.0K | 1,248,888 | |
| Smith Stan | Director | Buy | 57,189 | $1.22 | $70.0K | 1,421,478 | |
| CHAOUKI STEVEN M | Director | Buy | 40,849 | $1.22 | $50.0K | 151,873 | |
| Smith Stan 3 fills | Director | Buy | 13,740 | $1.20 | $16.4K | 4,580 | |
| Vitoc Vlad 2 fills | Chief Executive Officer | Buy | 100,000 | $1.14 | $113.7K | 903,421 | |
| Luput Cristian | Director | Buy | 18,145 | $1.11 | $20.2K | 437,628 | |
| Vitoc Vlad 2 fills | Chief Executive Officer | Buy | 44,000 | $1.05 | $46.0K | 853,421 | |
| Luput Cristian | Director | Buy | 20,000 | $1.08 | $21.6K | 419,483 | |
| Smith Stan | Director | Buy | 15,000 | $1.04 | $15.6K | 1,364,289 | |
| Vitoc Vlad 2 fills | Chief Executive Officer | Buy | 21,000 | $0.97 | $20.3K | 831,421 | |
| Smith Stan | Director | Buy | 15,000 | $0.98 | $14.7K | 1,349,289 | |
| Luput Cristian | Director | Buy | 10,000 | $0.98 | $9.8K | 399,483 | |
| Smith Stan | Director | Buy | 10,000 | $0.99 | $9.9K | 1,334,289 | |
| Vitoc Vlad | Chief Executive Officer | Buy | 10,000 | $0.99 | $9.9K | 820,921 | |
| Vitoc Vlad | Chief Executive Officer | Buy | 1,800 | $0.92 | $1.7K | 810,921 | |
| Smith Stan | Director | Buy | 19,230 | $1.30 | $25.0K | 1,324,289 |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.