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MAIA Biotechnology, Inc.

MAIA
Exchange
NYSE
Industry
Pharmaceutical Preparations
SEC CIK
0001878313

In the last 90 days, MAIA Biotechnology, Inc. insiders filed 5 open-market purchases and 0 sales; 36 institutions reported holding it in 13F filings for Q2 2026, worth $19.4M in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by MAIA Biotechnology, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
5 filings
2 insiders, $352.3K in total
Open-market sells
0 filings
Insiders trading
2
Net value
+$352.3K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for MAIA Biotechnology, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for MAIA Biotechnology, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Vitoc VladChief Executive Officer1,049,121Sep 15, 20267
Guerrero RamiroDirector773,296Sep 14, 20268
Chaouki Steven MDirector151,873Jul 2, 20265
Louie Ngar YeeDirector1,248,888Jul 2, 20265
Luput CristianDirector437,628Jul 2, 20266
Smith StanDirector1,519,178IndirectJul 2, 202611
Theagene Jean-ManasseDirector–Jul 2, 20264
Gryaznov SergeiChief Scientific Officer46,511Jun 2, 20263
Himmelreich Jeffrey CHead of Finance–Jun 1, 20262
McGuire Joseph FChief Financial Officer9,400Jun 5, 20230
Obrocea MihailChief Medical Officer27,100Jun 5, 20230
Vlad LaurentiuDirector376,933Jan 4, 20230

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jun 5, 2025 (view filing)Jun 32 daysSmith StanDirectorPPurchase+33.3K$1.50+$50.0K+2.6%1.31M after
Jun 5, 2025 (view filing)Jun 32 daysSmith StanDirectorPPurchase+33.3K$1.71+$57.0K–33.3K afterDerivative
Oct 2, 2025 (view filing)Oct 11 daySmith StanDirectorPPurchase+19.2K$1.30+$25.0K+1.5%1.32M after
Oct 2, 2025 (view filing)Oct 11 daySmith StanDirectorPPurchase+19.2K$1.57+$30.2K–19.2K afterDerivative
Nov 25, 2025 (view filing)Nov 21-244 daysVitoc VladChief Executive OfficerPPurchase+11.8K$0.9793+$11.6K+1.5%820.9K after2 lots
Nov 26, 2025 (view filing)Nov 24-252 daysSmith StanDirectorPPurchase+25.0K$0.984+$24.6K+1.9%1.35M after2 lots
Nov 28, 2025 (view filing)Nov 253 daysLuput CristianDirectorPPurchase+10.0K$0.98+$9.80K+2.6%399.5K after
Dec 1, 2025 (view filing)Nov 265 daysSmith StanDirectorPPurchase+15.0K$1.04+$15.6K+1.1%1.36M after
Dec 1, 2025 (view filing)Nov 26-285 daysLuput CristianDirectorPPurchase+38.1K$1.09+$41.7K+9.5%437.6K after2 lots
Dec 4, 2025 (view filing)Nov 26-288 daysVitoc VladChief Executive OfficerPPurchase+72.0K$1.11+$80.1K+8.7%903.4K afterAmended2 lots
Dec 4, 2025 (view filing)Nov 259 daysVitoc VladChief Executive OfficerPPurchase+10.5K$0.97+$10.2K+1.3%831.4K afterAmended
Dec 9, 2025 (view filing)Dec 54 daysSmith StanDirectorPPurchase+13.7K$1.20+$16.4KNew position4.58K after3 lots
Dec 23, 2025 (view filing)Dec 221 dayLouie Ngar YeeDirectorPPurchase+81.7K$1.22+$99.7K+7.0%1.25M after
Dec 23, 2025 (view filing)Dec 221 dayLouie Ngar YeeDirectorPPurchase+81.7K$1.36+$111.1K–81.7K afterDerivative
Dec 23, 2025 (view filing)Dec 221 dayChaouki Steven MDirectorPPurchase+40.8K$1.22+$49.8K+36.8%151.9K after
Dec 23, 2025 (view filing)Dec 221 dayChaouki Steven MDirectorPPurchase+40.8K$1.36+$55.6K–40.8K afterDerivative
Dec 23, 2025 (view filing)Dec 221 daySmith StanDirectorPPurchase+57.2K$1.22+$69.8K+4.2%1.42M after
Dec 23, 2025 (view filing)Dec 221 daySmith StanDirectorPPurchase+57.2K$1.36+$77.8K–57.2K afterDerivative
Jan 12, 2026 (view filing)Sep 19, 20221,211 daysLateSmith StanDirectorPPurchase+2.70K$3.69+$9.96K+0.2%1.42M after
Jun 2, 2026 (view filing)Jun 11 dayGryaznov SergeiChief Scientific OfficerPPurchase+2.00K$1.35+$2.70K+4.5%46.5K after
Jun 2, 2026 (view filing)Jun 11 daySmith StanDirectorPPurchase+75.0K$1.34+$100.5K+5.2%1.52M after
Jun 2, 2026 (view filing)Jun 11 dayVitoc VladChief Executive OfficerPPurchase+72.7K$1.39+$101.1K+8.0%976.1K after
Aug 24, 2026 (view filing)4:09 PM ETAug 204 daysGuerrero RamiroDirectorPPurchase+11.9K$1.37+$16.3K+2.0%600.1K after
Aug 26, 2026 (view filing)7:56 AM ETAug 242 daysGuerrero RamiroDirectorPPurchase+1.79K$1.33+$2.39K+0.3%601.9K after
Sep 1, 2026 (view filing)4:16 PM ETAug 26-286 daysLateGuerrero RamiroDirectorPPurchase+133.8K$1.38+$184.1K+22.2%735.7K after3 lots
Sep 14, 2026 (view filing)9:03 AM ETSep 104 daysGuerrero RamiroDirectorPPurchase+37.6K$1.32+$49.5K+5.1%773.3K after
Sep 15, 2026 (view filing)6:33 AM ETSep 141 dayVitoc VladChief Executive OfficerPPurchase+73.0K$1.37+$100.0K+7.5%1.05M after