NYSE · CIK 0001878313
MAIA MAIA Biotechnology, Inc.
Insider trading from SEC Form 4. Last filing 11 d ago. Close $1.22 on Oct 9, 2026, +40% from the 52-week low and -59% from the high.
MAIA Biotechnology, Inc. (MAIA) has 68 SEC Form 4 filings on file from 7 insiders, the latest filed on Oct 2, 2026. In the last 90 days insiders made 3 open-market buys worth $334k and 0 open-market sells worth $0, net +$334k.
29 open-market trades have been scored at MAIA. The newest: Vlad Vitoc (Chief Executive Officer) bought $100k of stock on Sep 14, 2026, filed Sep 15, 2026, scored 54 (moderate). The largest of the 29 shown: Stan Smith (director) bought $251k on Nov 1, 2024, scored 46 (moderate). 2 insiders bought within 14 days of each other around Sep 14, 2026.
MAIA closed at $1.22 on Oct 9, 2026, 40% above its 52-week low and 59% below its 52-week high.
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at MAIA Biotechnology, Inc., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 54Moderate | Vlad Vitoc Chief Executive Officer buy | $100k 73,000 shares | +7% | +60% from low-53% from high | |
| 46Moderate | Ramiro Guerrero director buy | $50k 37,595 shares | +5% | +50% from low-56% from high | |
| 33Weak | Ramiro Guerrero director buy | $184k 133,790 shares | +22% | - | |
| 10Weak | Stan Smith director buy | $9,959 2,700 shares | +0% | - | |
| 51Moderate | Steven M Chaouki director buy | $50k 40,849 shares | +37% | +53% from low-46% from high | |
| 51Moderate | Ngar Yee Louie director buy | $100k 81,699 shares | +7% | +53% from low-46% from high | |
| 51Moderate | Stan Smith director buy | $70k 57,189 shares | +4% | +53% from low-46% from high | |
| 51Moderate | Stan Smith director buy | $16k 13,740 shares | - | +38% from low-52% from high | |
| 65Notable | Vlad Vitoc Chief Executive Officer buy | $80k 72,000 shares | +9% | +22% from low-57% from high | |
| 53Moderate | Vlad Vitoc Chief Executive Officer buy | $10k 10,500 shares | +1% | +11% from low-61% from high | |
| 52Moderate | Cristian Luput director buy | $42k 38,145 shares | +10% | +22% from low-57% from high | |
| 43Moderate | Stan Smith director buy | $16k 15,000 shares | +1% | +22% from low-57% from high | |
| 65Notable | Vlad Vitoc Chief Executive Officer buy | $80k 72,000 shares | +9% | +22% from low-57% from high | |
| 38Weak | Cristian Luput director buy | $9,785 10,000 shares | +3% | +11% from low-61% from high | |
| 53Moderate | Vlad Vitoc Chief Executive Officer buy | $10k 10,500 shares | +1% | +11% from low-61% from high | |
| 43Moderate | Stan Smith director buy | $25k 25,000 shares | +2% | +14% from low-60% from high | |
| 58Moderate | Vlad Vitoc Chief Executive Officer buy | $12k 11,800 shares | +1% | +5% from low-63% from high | |
| 23Weak | Stan Smith director buy | $25k 19,230 shares | +1% | +15% from low-50% from high | |
| 35Weak | Stan Smith director buy | $50k 33,333 shares | +3% | +22% from low-47% from high | |
| 41Moderate | Ramiro Guerrero director buy | $30k 20,000 shares | +4% | +36% from low-41% from high | |
| 44Moderate | Stan Smith director buy | $100k 66,666 shares | +6% | +36% from low-41% from high | |
| 30Weak | Ramiro Guerrero director buy | $50k 33,333 shares | +6% | - | |
| 33Weak | Ramiro Guerrero director buy | $110k 73,333 shares | +16% | - | |
| 41Moderate | Ramiro Guerrero director buy | $100k 53,418 shares | +12% | - | |
| 34Weak | Stan Smith director buy | $47k 25,000 shares | +2% | - | |
| 43Moderate | Steven M Chaouki director buy | $56k 22,133 shares | +25% | - | |
| 48Moderate | Ramiro Guerrero director buy | $222k 88,534 shares | +28% | - | |
| 40Moderate | Cristian Luput director buy | $56k 22,133 shares | +6% | - | |
| 46Moderate | Stan Smith director buy | $251k 100,000 shares | +12% | - |
Transactions
The newest 50 of 104 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Cristian Luput director | AGrant or award Stock Optionsderivative | +33,536 | $0.00 | $0 | 33,536 | 11 d ago |
| Sep 30, 2026 | Ngar Yee Louie director | AGrant or award Stock Optionsderivative | +39,634 | $0.00 | $0 | 39,634 | 11 d ago |
| Sep 30, 2026 | Ramiro Guerrero director | AGrant or award Stock Optionsderivative | +32,012 | $0.00 | $0 | 32,012 | 11 d ago |
| Sep 30, 2026 | Steven M Chaouki director | AGrant or award Stock Optionsderivative | +32,774 | $0.00 | $0 | 32,774 | 11 d ago |
| Sep 30, 2026 | Jean-Manasse Theagene director | AGrant or award Stock Optionsderivative | +32,012 | $0.00 | $0 | 32,012 | 11 d ago |
| Sep 30, 2026 | Stan Smith director | AGrant or award Stock Optionsderivativeindirect: See footnote | +38,871 | $0.00 | $0 | 38,871 | 11 d ago |
| Sep 14, 2026 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +73,000 | $1.37 | $100k | 1,049,121 | 28 d ago |
| Sep 10, 2026 | Ramiro Guerrero director | POpen-market purchase Common Stock | +37,595 | $1.32 | $50k | 773,296 | 29 d ago |
| Aug 26, 2026 | Ramiro Guerrero director | POpen-market purchase Common Stock | +8,931 | $1.39 | $12k | 610,842 | 42 d ago |
| Aug 27, 2026 | Ramiro Guerrero director | POpen-market purchase Common Stock | +78,239 | $1.39 | $109k | 689,081 | 42 d ago |
| Aug 28, 2026 | Ramiro Guerrero director | POpen-market purchase Common Stock | +46,620 | $1.35 | $63k | 735,701 | 42 d ago |
| Mar 31, 2026 | Steven M Chaouki director | AGrant or award Stock Optionsderivative | +27,907 | $0.00 | $0 | 27,907 | Apr 2, 2026 |
| Sep 19, 2022 | Stan Smith director | POpen-market purchase Common Stockindirect: See Footnote | +2,700 | $3.69 | $9,959 | 1,424,178 | Jan 12, 2026 |
| May 1, 2024 | Stan Smith director | GGift Common Stockindirect: See Footnote | +20,000 | $0.00 | $0 | 1,444,178 | Jan 12, 2026 |
| Dec 31, 2025 | Cristian Luput director | AGrant or award Optionsderivative | +25,206 | $0.00 | $0 | 25,206 | Jan 5, 2026 |
| Dec 31, 2025 | Stan Smith director | AGrant or award Optionsderivativeindirect: See footnote | +29,216 | $0.00 | $0 | 29,216 | Jan 5, 2026 |
| Dec 31, 2025 | Jean-Manasse Theagene director | AGrant or award Optionsderivative | +24,060 | $0.00 | $0 | 24,060 | Jan 5, 2026 |
| Dec 31, 2025 | Steven M Chaouki director | AGrant or award Optionsderivative | +24,633 | $0.00 | $0 | 24,633 | Jan 5, 2026 |
| Dec 31, 2025 | Ramiro Guerrero director | AGrant or award Optionsderivative | +24,060 | $0.00 | $0 | 24,060 | Jan 5, 2026 |
| Dec 31, 2025 | Ngar Yee Louie director | AGrant or award Optionsderivative | +29,789 | $0.00 | $0 | 29,789 | Jan 5, 2026 |
| Dec 22, 2025 | Steven M Chaouki director | POpen-market purchase Common Stock | +40,849 | $1.22 | $50k | 151,873 | Dec 23, 2025 |
| Dec 22, 2025 | Ngar Yee Louie director | POpen-market purchase Common Stock | +81,699 | $1.22 | $100k | 1,248,888 | Dec 23, 2025 |
| Dec 22, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See Footnote | +57,189 | $1.22 | $70k | 1,421,478 | Dec 23, 2025 |
| Dec 22, 2025 | Steven M Chaouki director | POpen-market purchase Stock Optionsderivative | +40,849 | $1.36 | $56k | 40,849 | Dec 23, 2025 |
| Dec 22, 2025 | Ngar Yee Louie director | POpen-market purchase Stock Optionsderivative | +81,699 | $1.36 | $111k | 81,699 | Dec 23, 2025 |
| Dec 22, 2025 | Stan Smith director | POpen-market purchase Stock Optionsderivativeindirect: See footnote | +57,189 | $1.36 | $78k | 57,189 | Dec 23, 2025 |
| Dec 5, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See footnote | +4,580 | $1.20 | $5,495 | 4,580 | Dec 9, 2025 |
| Dec 5, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See footnote | +4,580 | $1.19 | $5,450 | 4,580 | Dec 9, 2025 |
| Dec 5, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See footnote | +4,580 | $1.20 | $5,496 | 4,580 | Dec 9, 2025 |
| Nov 26, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +22,000 | $1.05 | $23k | 853,421 | Dec 4, 2025 |
| Nov 25, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +10,500 | $0.97 | $10k | 831,421 | Dec 4, 2025 |
| Nov 28, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +50,000 | $1.14 | $57k | 903,421 | Dec 4, 2025 |
| Nov 26, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See Footnote | +15,000 | $1.04 | $16k | 1,364,289 | Dec 1, 2025 |
| Nov 28, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +50,000 | $1.14 | $57k | 881,421 | Dec 1, 2025 |
| Nov 26, 2025 | Cristian Luput director | POpen-market purchase Common Stock | +20,000 | $1.08 | $22k | 419,483 | Dec 1, 2025 |
| Nov 26, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +22,000 | $1.05 | $23k | 853,421 | Dec 1, 2025 |
| Nov 28, 2025 | Cristian Luput director | POpen-market purchase Common Stock | +18,145 | $1.11 | $20k | 437,628 | Dec 1, 2025 |
| Nov 25, 2025 | Cristian Luput director | POpen-market purchase Common Stock | +10,000 | $0.98 | $9,785 | 399,483 | Nov 28, 2025 |
| Nov 25, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +10,500 | $0.97 | $10k | 831,421 | Nov 28, 2025 |
| Nov 24, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See Footnote | +10,000 | $0.99 | $9,900 | 1,334,289 | Nov 26, 2025 |
| Nov 25, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See Footnote | +15,000 | $0.98 | $15k | 1,349,289 | Nov 26, 2025 |
| Nov 21, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +1,800 | $0.92 | $1,656 | 810,921 | Nov 25, 2025 |
| Nov 24, 2025 | Vlad Vitoc Chief Executive Officer | POpen-market purchase Common Stock | +10,000 | $0.99 | $9,891 | 820,921 | Nov 25, 2025 |
| Oct 2, 2025 | Steven M Chaouki director | AGrant or award Stock Optionsderivative | +20,946 | $0.00 | $0 | 20,946 | Oct 6, 2025 |
| Oct 2, 2025 | Ramiro Guerrero director | AGrant or award Stock Optionsderivative | +20,459 | $0.00 | $0 | 20,459 | Oct 6, 2025 |
| Oct 2, 2025 | Ngar Yee Louie director | AGrant or award Stock Optionsderivative | +25,331 | $0.00 | $0 | 25,331 | Oct 6, 2025 |
| Oct 2, 2025 | Cristian Luput director | AGrant or award Stock Optionsderivative | +21,434 | $0.00 | $0 | 21,434 | Oct 6, 2025 |
| Oct 2, 2025 | Jean-Manasse Theagene director | AGrant or award Stock Optionsderivative | +20,459 | $0.00 | $0 | 20,459 | Oct 6, 2025 |
| Oct 2, 2025 | Stan Smith director | AGrant or award Stock Optionsderivativeindirect: See Footnote | +24,844 | $0.00 | $0 | 24,844 | Oct 6, 2025 |
| Oct 1, 2025 | Stan Smith director | POpen-market purchase Common Stockindirect: See Footnote | +19,230 | $1.30 | $25k | 1,324,289 | Oct 2, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Steven M Chaoukidirector, president, officer
- Ramiro Guerrerodirector
- Ngar Yee Louiedirector
- Cristian Luputdirector
- Stan Smithdirector
- Jean-Manasse Theagenedirector
- Vlad VitocChief Executive Officer
Questions about MAIA
Answered from the filings on this page, as of the latest one.
Are insiders buying MAIA?
As of Oct 2, 2026, SEC Form 4 filings show 3 open-market buys worth $334k by 2 insiders and 0 open-market sells worth $0 by 0 insiders at MAIA Biotechnology, Inc. in the last 90 days, net +$334k. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade MAIA on the open market?
Vlad Vitoc (Chief Executive Officer) bought $100k of MAIA on Sep 14, 2026 and filed the Form 4 on Sep 15, 2026. InsiderTell scored 54 (moderate), with 2 insiders on the same side within 14 days.
How many insiders file Form 4 at MAIA Biotechnology, Inc.?
7 people have filed a Form 4 at MAIA Biotechnology, Inc., among them Steven M Chaouki (director and president), Ramiro Guerrero (director), Ngar Yee Louie (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.