MAIANYSEPharmaceutical PreparationsFiscal year ends December 31
MAIA Biotechnology, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 10, 2026
$1.07−0.03 (-2.73%)
Close on Oct 19, 2026
- Market cap
- $65.05M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
22.2%
14M of 61M shares
Institutional holders
36
13 new, 10 sold out
Net institutional buying
0M
In Q2 2026
Insider trades, 12 months
30 buys · 0 sales
Net bought $1.08M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Vlad Vitoc | 3,846,352 | 9.66% | 13D (active) amendment | Nov 21, 2025 |
| Fgmk, LLC | 2,889,561 | 9.99% | 13G (passive) | Sep 14, 2024 |
| Louie Ngar Yee | 1,585,456 | 6.50% | 13D (active) | Mar 14, 2024 |
| Stan V. Smith | 1,547,933 | 6.32% | 13D (active) amendment | Apr 28, 2023 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of MAIA | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Solas Capital Management, LLC | 3,030,845 | 4.98% | $4.36M | −1,266,159 | 2.34% |
| Alyeska Investment Group, L.P. | 2,500,000 | 4.11% | $3.60M | – | 0.01% |
| Vanguard Capital Management LLC | 2,413,270 | 3.97% | $3.48M | +339,225 | 0.00% |
| 683 Capital Management, LLC | 1,066,666 | 1.75% | $1.54M | – | 0.08% |
| Centric Wealth Management | 796,723 | 1.31% | $1.11M | – | 0.17% |
| Cable Car Capital, LP | 514,583 | 0.85% | $741.00K | −133,920 | 0.02% |
| Geode Capital Management, LLC | 504,380 | 0.83% | $726.57K | +143,899 | 0.00% |
| Bleichroeder LP | 500,000 | 0.82% | $720.00K | – | 0.13% |
| Renaissance Technologies LLC | 415,700 | 0.68% | $598.61K | New | 0.00% |
| BlackRock, Inc. | 403,011 | 0.66% | $580.34K | +275,033 | 0.00% |
| Vanguard Fiduciary Trust Co | 336,688 | 0.55% | $484.83K | +137,374 | 0.00% |
| State Street Corp | 201,750 | 0.33% | $290.52K | +62,800 | 0.00% |
| Bleakley Financial Group, LLC | 181,623 | 0.30% | $261.54K | New | 0.00% |
| Northern Trust Corp | 125,171 | 0.21% | $180.25K | +72,632 | 0.00% |
| Morgan Stanley | 104,017 | 0.17% | $149.78K | +90,158 | 0.00% |
| Bridgeway Capital Management, LLC | 76,000 | 0.12% | $109.44K | +40,000 | 0.00% |
| Two Sigma Investments, LP | 50,383 | 0.08% | $72.55K | New | 0.00% |
| Envestnet Asset Management Inc | 44,347 | 0.07% | $63.86K | New | 0.00% |
| Susquehanna International Group, Llp | 35,223 | 0.06% | $50.72K | New | 0.00% |
| Pvg Asset Management Corp | 34,135 | 0.06% | $49.15K | – | 0.03% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 36 | 14M | 22.2% | 13 / 9 | 3 / 10 | 2M | 2M |
| Q1 2026 | 33 | 13M | 21.6% | 14 / 7 | 2 / 6 | 12M | 0M |
| Q4 2025 | 26 | 3M | 4.1% | 9 / 8 | 0 / 2 | 0M | 0M |
| Q3 2025 | 19 | 2M | 3.9% | 3 / 5 | 3 / 4 | 0M | 0M |
| Q2 2025 | 20 | 2M | 3.8% | 4 / 10 | 0 / 4 | 1M | 0M |
| Q1 2025 | 20 | 1M | 2.4% | 3 / 6 | 5 / 3 | 0M | 0M |
| Q4 2024 | 20 | 1M | 2.3% | 7 / 6 | 2 / 4 | 0M | 0M |
| Q3 2024 | 17 | 1M | 2.4% | 3 / 5 | 2 / 6 | 0M | 0M |
| Q2 2024 | 21 | 2M | 2.9% | 5 / 9 | 4 / 4 | 1M | 0M |
| Q1 2024 | 20 | 1M | 1.1% | 3 / 6 | 7 / 5 | 0M | 0M |
| Q4 2023 | 22 | 1M | 1.3% | 9 / 10 | 1 / 1 | 1M | 0M |
| Q3 2023 | 14 | 0M | 0.5% | 5 / 6 | 0 / 3 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of MAIA | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 1,676,861 | 2.76% | $2.41M | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 668,115 | 1.10% | $962.09K | 0.00% | Jun 30, 2026 |
| iShares Micro-Cap ETF | 178,862 | 0.29% | $257.56K | 0.02% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 175,856 | 0.29% | $244.44K | 0.00% | May 31, 2026 |
| Ultra-Small Company Market Fund | 76,000 | 0.12% | $109.44K | 0.07% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 50,558 | 0.08% | $70.28K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 47,019 | 0.08% | $65.36K | 0.00% | May 31, 2026 |
| Vanguard Institutional Total Stock Market Index Fund | 39,706 | 0.07% | $57.18K | 0.00% | Jun 30, 2026 |
| Vanguard Balanced Index Fund | 28,588 | 0.05% | $41.17K | 0.00% | Jun 30, 2026 |
| 1290 VT Micro Cap Portfolio | 12,030 | 0.02% | $17.32K | 0.01% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Vlad Vitoc | Chief Executive Officer, Director, 10% owner | 1,259,221 | 2.07% | Sep 15, 2026 |
| Sergei Gryaznov | Chief Scientific Officer | 46,511 | 0.08% | Jun 2, 2026 |
| Jeffrey C. Himmelreich | Head of Finance | – | – | Jun 1, 2026 |
| Ramiro Guerrero | Director | 773,296 | 1.27% | Sep 14, 2026 |
| Stan Smith | Director | 1,519,178 | 2.50% | Jul 2, 2026 |
| Cristian Luput | Director | 437,628 | 0.72% | Jul 2, 2026 |
| Jean-Manasse Theagene | Director | – | – | Jul 2, 2026 |
| Ngar Yee Louie | Director | 1,248,888 | 2.05% | Jul 2, 2026 |
| Steven M. Chaouki | Director | 151,873 | 0.25% | Jul 2, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Sep 14, 2026 | Buy | +73,000 | $1.37 | $100.01K | 1,049,121 |
| Ramiro Guerrero Director | Sep 10, 2026 | Buy | +37,595 | $1.32 | $49.63K | 773,296 |
| Ramiro Guerrero Director | Aug 28, 2026 | Buy | +46,620 | $1.35 | $62.94K | 735,701 |
| Ramiro Guerrero Director | Aug 27, 2026 | Buy | +78,239 | $1.39 | $108.75K | 689,081 |
| Ramiro Guerrero Director | Aug 26, 2026 | Buy | +8,931 | $1.39 | $12.41K | 610,842 |
| Ramiro Guerrero Director | Aug 24, 2026 | Buy | +1,794 | $1.33 | $2.39K | 601,911 |
| Ramiro Guerrero Director | Aug 20, 2026 | Buy | +11,899 | $1.37 | $16.30K | 600,117 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Jun 1, 2026 | Buy | +72,700 | $1.39 | $101.05K | 976,121 |
| Sergei Gryaznov Chief Scientific Officer | Jun 1, 2026 | Buy | +2,000 | $1.35 | $2.70K | 46,511 |
| Stan Smith Director | Jun 1, 2026 | Buy | +75,000 | $1.34 | $100.50K | 1,519,178 |
| Ngar Yee Louie Director | Dec 22, 2025 | Buy | +81,699 | $1.22 | $99.67K | 1,248,888 |
| Stan Smith Director | Dec 22, 2025 | Buy | +57,189 | $1.22 | $69.77K | 1,421,478 |
| Steven M. Chaouki Director | Dec 22, 2025 | Buy | +40,849 | $1.22 | $49.84K | 151,873 |
| Stan Smith Director | Dec 5, 2025 | Buy | +4,580 | $1.19 | $5.45K | 4,580 |
| Stan Smith Director | Dec 5, 2025 | Buy | +4,580 | $1.20 | $5.50K | 4,580 |
| Stan Smith Director | Dec 5, 2025 | Buy | +4,580 | $1.20 | $5.50K | 4,580 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 28, 2025 | Buy | +50,000 | $1.14 | $57.00K | 903,421 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 28, 2025 | Buy | +50,000 | $1.14 | $57.00K | 881,421 |
| Cristian Luput Director | Nov 28, 2025 | Buy | +18,145 | $1.11 | $20.14K | 437,628 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 26, 2025 | Buy | +22,000 | $1.05 | $23.10K | 853,421 |
| Stan Smith Director | Nov 26, 2025 | Buy | +15,000 | $1.04 | $15.60K | 1,364,289 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 26, 2025 | Buy | +22,000 | $1.05 | $23.10K | 853,421 |
| Cristian Luput Director | Nov 26, 2025 | Buy | +20,000 | $1.08 | $21.60K | 419,483 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 25, 2025 | Buy | +10,500 | $0.97 | $10.19K | 831,421 |
| Cristian Luput Director | Nov 25, 2025 | Buy | +10,000 | $0.98 | $9.80K | 399,483 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 25, 2025 | Buy | +10,500 | $0.97 | $10.19K | 831,421 |
| Stan Smith Director | Nov 25, 2025 | Buy | +15,000 | $0.98 | $14.70K | 1,349,289 |
| Stan Smith Director | Nov 24, 2025 | Buy | +10,000 | $0.99 | $9.90K | 1,334,289 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 24, 2025 | Buy | +10,000 | $0.99 | $9.90K | 820,921 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Nov 21, 2025 | Buy | +1,800 | $0.92 | $1.66K | 810,921 |
| Stan Smith Director | Oct 1, 2025 | Buy | +19,230 | $1.30 | $25.00K | 1,324,289 |
| Stan Smith Director | Jun 3, 2025 | Buy | +33,333 | $1.50 | $50.00K | 1,305,059 |
| Stan Smith Director | May 8, 2025 | Buy | +66,666 | $1.50 | $100.00K | 1,271,726 |
| Ramiro Guerrero Director | May 8, 2025 | Buy | +20,000 | $1.50 | $30.00K | 588,218 |
| Stan Smith Director | Mar 3, 2025 | Buy | +25,000 | $1.50 | $37.50K | 1,205,060 |
| Ramiro Guerrero Director | Mar 3, 2025 | Buy | +33,333 | $1.50 | $50.00K | 568,218 |
| Stan Smith Director | Feb 24, 2025 | Buy | +50,000 | $1.50 | $75.00K | 1,180,060 |
| Ramiro Guerrero Director | Feb 24, 2025 | Buy | +73,333 | $1.50 | $110.00K | 534,885 |
| Ramiro Guerrero Director | Feb 24, 2025 | Buy | +73,333 | $1.50 | $110.00K | 534,885 |
| Stan Smith Director | Feb 24, 2025 | Buy | +50,000 | $1.50 | $75.00K | 1,180,060 |
| Stan Smith Director | Dec 13, 2024 | Buy | +25,000 | $1.87 | $46.75K | 1,130,060 |
| Ramiro Guerrero Director | Dec 13, 2024 | Buy | +53,418 | $1.87 | $99.89K | 514,970 |
| Steven M. Chaouki Director | Nov 1, 2024 | Buy | +22,133 | $2.51 | $55.55K | 111,024 |
| Stan Smith Director | Nov 1, 2024 | Buy | +100,000 | $2.51 | $251.00K | 957,568 |
| Ramiro Guerrero Director | Nov 1, 2024 | Buy | +88,534 | $2.51 | $222.22K | 408,134 |
| Cristian Luput Director | Nov 1, 2024 | Buy | +22,133 | $2.51 | $55.55K | 389,483 |
| Stan Smith Director | May 1, 2024 | Gift | +20,000 | – | – | 1,444,178 |
| Stan Smith Director | Apr 25, 2024 | Buy | +147,492 | $2.03 | $299.41K | 1,005,060 |
| Ngar Yee Louie Director | Apr 25, 2024 | Buy | +19,665 | $2.03 | $39.92K | 1,167,189 |
| Steven M. Chaouki Director | Mar 14, 2024 | Buy | +34,641 | $1.17 | $40.53K | 88,891 |
| Ramiro Guerrero Director | Mar 14, 2024 | Buy | +6,928 | $1.17 | $8.11K | 319,600 |
| Cristian Luput Director | Mar 14, 2024 | Buy | +69,282 | $1.17 | $81.06K | 367,350 |
| Stan Smith Director | Mar 14, 2024 | Buy | +170,940 | $1.17 | $200.00K | 857,568 |
| Ngar Yee Louie Director | Mar 14, 2024 | Buy | +170,940 | $1.17 | $200.00K | 1,147,524 |
| Ramiro Guerrero Director | May 18, 2023 | Buy | +1,200 | $2.47 | $2.96K | 312,672 |
| Cristian Luput Director | May 15, 2023 | Buy | +3,000 | $2.63 | $7.89K | 298,068 |
| Vlad Vitoc Chief Executive Officer, Director, 10% owner | Apr 28, 2023 | Buy | +4,000 | $2.50 | $10.00K | 809,121 |
| Ramiro Guerrero Director | Apr 27, 2023 | Buy | +8,500 | $2.25 | $19.13K | 311,472 |
| Stan Smith Director | Apr 27, 2023 | Buy | +133,300 | $2.25 | $299.93K | 686,628 |
| Ngar Yee Louie Director | Apr 27, 2023 | Buy | +48,000 | $2.25 | $108.00K | 976,584 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Mihail Obrocea Former director | Jan 19, 2024 | 26,100 | $33.41K | Jan 19, 2024 | Private Investment Purchase |