MAIA Biotechnology, Inc (MAIA) insider trading
Every open-market stock purchase and sale by MAIA Biotechnology, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Ramiro Guerrero (Director) and 1 other bought $352K in the last 90 days, growing their stake 13%.
Last 12 months: insiders bought $1.1M (21 buys) and sold $0 (0 sales). Last close $1.40 on Sep 17, 2026.
Recent MAIA insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 14, 2026 | Vlad Vitoc (CEO) | Bought | $100K |
| Sep 10, 2026 | Ramiro Guerrero (Director) | Bought | $49.5K |
| Aug 28, 2026 | Ramiro Guerrero (Director) | Bought | $62.9K |
| Aug 27, 2026 | Ramiro Guerrero (Director) | Bought | $109K |
| Aug 26, 2026 | Ramiro Guerrero (Director) | Bought | $12.4K |
| Aug 24, 2026 | Ramiro Guerrero (Director) | Bought | $2.4K |
| Aug 20, 2026 | Ramiro Guerrero (Director) | Bought | $16.3K |
| Jun 1, 2026 | Vlad Vitoc (CEO) | Bought | $101K |
| Jun 1, 2026 | Stan Smith (Director) | Bought | $100K |
| Jun 1, 2026 | Sergei Gryaznov (C-suite exec) | Bought | $2.7K |
| May 29, 2026 | Jeffrey C Himmelreich (Officer) | Bought (not open market) | — |
| May 29, 2026 | Vlad Vitoc (CEO) | Bought (not open market) | — |
| May 29, 2026 | Sergei Gryaznov (C-suite exec) | Bought (not open market) | — |
| Apr 10, 2026 | Vlad Vitoc (CEO) | Bought (not open market) | — |
| Apr 10, 2026 | Sergei Gryaznov (C-suite exec) | Bought (not open market) | — |
| Apr 10, 2026 | Jeffrey C Himmelreich (Officer) | Bought (not open market) | — |
| Mar 31, 2026 | Jean-Manasse Theagene (Director) | Bought (not open market) | — |
| Mar 31, 2026 | Steven M Chaouki (Director) | Bought (not open market) | — |
| Mar 31, 2026 | Ramiro Guerrero (Director) | Bought (not open market) | — |
| Mar 31, 2026 | Ngar Yee Louie (Director) | Bought (not open market) | — |
| Mar 31, 2026 | Cristian Luput (Director) | Bought (not open market) | — |
| Mar 31, 2026 | Stan Smith (Director) | Bought (not open market) | — |
| Dec 31, 2025 | Cristian Luput (Director) | Bought (not open market) | — |
| Dec 31, 2025 | Ngar Yee Louie (Director) | Bought (not open market) | — |
| Dec 31, 2025 | Stan Smith (Director) | Bought (not open market) | — |
Who's trading MAIA
- Vlad Vitoc, CEO: bought $392K (10 buys), last Sep 14, 2026
- Ramiro Guerrero, Director: bought $252K (6 buys), last Sep 10, 2026
- Stan Smith, Director: bought $224K (6 buys), last Jun 1, 2026
- Sergei Gryaznov, C-suite exec: bought $2.7K (1 buy), last Jun 1, 2026
- Jeffrey C Himmelreich, Officer: other filings, last May 29, 2026
- Ngar Yee Louie, Director: bought $111K (1 buy), last Mar 31, 2026
- Steven M Chaouki, Director: bought $55.6K (1 buy), last Mar 31, 2026
- Cristian Luput, Director: bought $51.6K (3 buys), last Mar 31, 2026
- Jean-Manasse Theagene, Director: other filings, last Mar 31, 2026
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