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MAIA

MAIA Biotechnology, Inc.

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6919
SEC CIK
0001878313
Parsed reports
248

Last 12 months

Inside the activity.

30 purchase rows · 0 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 2025140
Dec 202560
Jan 202600
Feb 202600
Mar 202600
Apr 202600
May 202600
Jun 202630
Jul 202600
Aug 202650
Sep 202620
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 30, 2026 Filed Oct 3, 2026 00:15 UTC GrantStock Options · Derivative 32,012 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0001878313-26-000096 · form4.xml · derivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,012

Underlying: Common Stock · 32,012 shares

Expires 2036-09-30

F1 · derivative.exercise_date: The stock options, granted on September 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
September 30, 2026 Filed Oct 3, 2026 00:14 UTC GrantStock Options · Derivative 32,774 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0001878313-26-000095 · form4.xml · derivative · entry 1

CHAOUKI STEVEN M · CIK 0001776865 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,774

Underlying: Common Stock · 32,774 shares

Expires 2036-09-30

F1 · derivative.exercise_date: The stock options, granted on September 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
September 30, 2026 Filed Oct 3, 2026 00:16 UTC GrantStock Options · Derivative 39,634 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0001878313-26-000097 · form4.xml · derivative · entry 1

Louie Ngar Yee · CIK 0001913264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,634

Underlying: Common Stock · 39,634 shares

Expires 2036-09-30

F1 · derivative.exercise_date: The stock options, granted on September 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
September 30, 2026 Filed Oct 3, 2026 00:18 UTC
Smith StanDirector
GrantStock Options · Derivative 38,871 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0001878313-26-000099 · form4.xml · derivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 38,871

Underlying: Common Stock · 38,871 shares

Expires 2036-09-30

F1 · derivative.exercise_date: The stock options, granted on September 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

F2 · ownership.direct: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

Read SEC document
September 30, 2026 Filed Oct 3, 2026 00:18 UTC GrantStock Options · Derivative 33,536 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0001878313-26-000098 · form4.xml · derivative · entry 1

Luput Cristian · CIK 0001913350 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,536

Underlying: Common Stock · 33,536 shares

Expires 2036-09-30

F1 · derivative.exercise_date: The stock options, granted on September 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
September 30, 2026 Filed Oct 3, 2026 00:20 UTC GrantStock Options · Derivative 32,012 $0.00 Strike: $1.18 $0.00
Disclosure

SEC source: 0001878313-26-000100 · form4.xml · derivative · entry 1

Theagene Jean-Manasse · CIK 0001969857 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,012

Underlying: Common Stock · 32,012 shares

Expires 2036-09-30

F1 · derivative.exercise_date: The stock options, granted on September 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
September 14, 2026 Filed Sep 15, 2026 10:33 UTC
Vitoc VladDirector · Chief Executive Officer · 10% owner
PurchaseCommon Stock 73,000 $1.37 $100,010.00
Disclosure

SEC source: 0001878313-26-000087 · form4.xml · nonDerivative · entry 1

Vitoc Vlad · CIK 0001913257 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,049,121

Read SEC document
September 10, 2026 Filed Sep 14, 2026 13:03 UTC PurchaseCommon Stock 37,595 $1.32 $49,516.37
Disclosure

SEC source: 0001878313-26-000084 · form4.xml · nonDerivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 773,296

Read SEC document
August 28, 2026 Filed Sep 1, 2026 20:16 UTC PurchaseCommon Stock 46,620 $1.35 $62,937.00
Disclosure

SEC source: 0001878313-26-000082 · form4.xml · nonDerivative · entry 3

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 735,701

Read SEC document
August 27, 2026 Filed Sep 1, 2026 20:16 UTC PurchaseCommon Stock 78,239 $1.39 $108,752.21
Disclosure

SEC source: 0001878313-26-000082 · form4.xml · nonDerivative · entry 2

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 689,081

Read SEC document
August 26, 2026 Filed Sep 1, 2026 20:16 UTC PurchaseCommon Stock 8,931 $1.39 $12,414.09
Disclosure

SEC source: 0001878313-26-000082 · form4.xml · nonDerivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 610,842

Read SEC document
August 24, 2026 Filed Aug 26, 2026 11:56 UTC PurchaseCommon Stock 1,794 $1.33 $2,386.02
Disclosure

SEC source: 0001878313-26-000079 · form4.xml · nonDerivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 601,911

Read SEC document
August 20, 2026 Filed Aug 24, 2026 20:09 UTC PurchaseCommon Stock 11,899 $1.37 $16,301.63
Disclosure

SEC source: 0001878313-26-000077 · form4.xml · nonDerivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,117

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:14 UTC GrantStock Options · Derivative 26,355 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001878313-26-000073 · form4.xml · derivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,355

Underlying: Common Stock · 26,355 shares

Expires 2036-06-30

F1 · derivative.exercise_date: The stock options, granted on June 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:13 UTC GrantStock Options · Derivative 32,630 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001878313-26-000072 · form4.xml · derivative · entry 1

Louie Ngar Yee · CIK 0001913264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,630

Underlying: Common Stock · 32,630 shares

Expires 2036-06-30

F1 · derivative.exercise_date: The stock options, granted on June 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:15 UTC GrantStock Options · Derivative 26,982 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001878313-26-000074 · form4.xml · derivative · entry 1

CHAOUKI STEVEN M · CIK 0001776865 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,982

Underlying: Common Stock · 26,982 shares

Expires 2036-06-30

F1 · derivative.exercise_date: The stock options, granted on June 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:11 UTC GrantStock Options · Derivative 27,610 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001878313-26-000071 · form4.xml · derivative · entry 1

Luput Cristian · CIK 0001913350 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,610

Underlying: Common Stock · 27,610 shares

Expires 2036-06-30

F1 · derivative.exercise_date: The stock options, granted on June 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:10 UTC
Smith StanDirector
GrantStock Options · Derivative 32,003 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001878313-26-000070 · form4.xml · derivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 32,003

Underlying: Common Stock · 32,003 shares

Expires 2036-06-30

F1 · derivative.exercise_date: The stock options, granted on June 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

F2 · ownership.nature: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:09 UTC GrantStock Options · Derivative 26,355 $0.00 Strike: $1.44 $0.00
Disclosure

SEC source: 0001878313-26-000069 · form4.xml · derivative · entry 1

Theagene Jean-Manasse · CIK 0001969857 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,355

Underlying: Common Stock · 26,355 shares

Expires 2036-06-30

F1 · derivative.exercise_date: The stock options, granted on June 30, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
June 01, 2026 Filed Jun 2, 2026 13:02 UTC
Vitoc VladDirector · Chief Executive Officer · 10% owner
PurchaseCommon Stock 72,700 $1.39 $100,885.79
Disclosure

SEC source: 0001878313-26-000062 · form4.xml · nonDerivative · entry 1

Vitoc Vlad · CIK 0001913257 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 976,121

F1 · price: The price reported is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $1.3634 to $1.4150, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of the issuer, or to the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above.

Read SEC document
June 01, 2026 Filed Jun 2, 2026 13:01 UTC
Smith StanDirector
PurchaseCommon Stock 75,000 $1.34 $100,200.00
Disclosure

SEC source: 0001878313-26-000061 · form4.xml · nonDerivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,519,178

F1 · price: The price reported is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $1.32 to $1.40, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of the issuer, or to the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above.

F2 · ownership.nature: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

Read SEC document
June 01, 2026 Filed Jun 2, 2026 13:00 UTC
Gryaznov SergeiChief Scientific Officer
PurchaseCommon Stock 2,000 $1.35 $2,690.00
Disclosure

SEC source: 0001878313-26-000060 · form4.xml · nonDerivative · entry 1

Gryaznov Sergei · CIK 0001913228 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,511

Read SEC document
May 29, 2026 Filed Jun 1, 2026 12:54 UTC
Vitoc VladDirector · Chief Executive Officer · 10% owner
GrantStock Options · Derivative 800,000 $0.00 Strike: $1.39 $0.00
Disclosure

SEC source: 0001878313-26-000053 · form4.xml · derivative · entry 1

Vitoc Vlad · CIK 0001913257 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 800,000

Underlying: Common Stock · 800,000 shares

Expires 2036-05-29

F1 · derivative.exercise_date: The stock options, granted on May 29, 2026 pursuant to MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary date of the grant and the remaining options to vest ratably monthly thereafter for 36 months.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 12:51 UTC
Gryaznov SergeiChief Scientific Officer
GrantStock Options · Derivative 400,000 $0.00 Strike: $1.39 $0.00
Disclosure

SEC source: 0001878313-26-000051 · form4.xml · derivative · entry 1

Gryaznov Sergei · CIK 0001913228 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 shares

Expires 2036-05-29

F1 · derivative.exercise_date: The stock options, granted on May 29, 2026 pursuant to MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary date of the grant and the remaining options to vest ratably monthly thereafter for 36 months.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 12:49 UTC
Himmelreich Jeffrey CHead of Finance
GrantStock Options · Derivative 60,000 $0.00 Strike: $1.39 $0.00
Disclosure

SEC source: 0001878313-26-000049 · form4.xml · derivative · entry 1

Himmelreich Jeffrey C · CIK 0002001189 · Head of Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2036-05-29

F1 · derivative.exercise_date: The stock options, granted on May 29, 2026 pursuant to MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary date of the grant and the remaining options to vest ratably monthly thereafter for 36 months.

Read SEC document
April 10, 2026 Filed Apr 14, 2026 12:44 UTC
Gryaznov SergeiChief Scientific Officer
GrantStock Options · Derivative 400,000 $0.00 Strike: $1.28 $0.00
Disclosure

SEC source: 0001878313-26-000046 · form4.xml · derivative · entry 1

Gryaznov Sergei · CIK 0001913228 · Chief Scientific Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 shares

Expires 2036-04-10

F1 · derivative.exercise_date: The stock options, granted on April 10, 2026 pursuant to MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary date of the grant and the remaining options to vest ratably monthly thereafter for 36 months.

Read SEC document
April 10, 2026 Filed Apr 14, 2026 12:45 UTC
Vitoc VladDirector · Chief Executive Officer · 10% owner
GrantStock Options · Derivative 800,000 $0.00 Strike: $1.28 $0.00
Disclosure

SEC source: 0001878313-26-000047 · form4.xml · derivative · entry 1

Vitoc Vlad · CIK 0001913257 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 800,000

Underlying: Common Stock · 800,000 shares

Expires 2036-04-10

F1 · derivative.exercise_date: The stock options, granted on April 10, 2026 pursuant to MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary date of the grant and the remaining options to vest ratably monthly thereafter for 36 months.

Read SEC document
April 10, 2026 Filed Apr 14, 2026 12:42 UTC
Himmelreich Jeffrey CHead of Finance
GrantStock Options · Derivative 30,000 $0.00 Strike: $1.28 $0.00
Disclosure

SEC source: 0001878313-26-000044 · form4.xml · derivative · entry 1

Himmelreich Jeffrey C · CIK 0002001189 · Head of Finance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common Stock · 30,000 shares

Expires 2036-04-10

F1 · derivative.exercise_date: The stock options, granted on April 10, 2026 pursuant to MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary date of the grant and the remaining options to vest ratably monthly thereafter for 36 months.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:55 UTC GrantStock Options · Derivative 27,258 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001878313-26-000037 · form4.xml · derivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,258

Underlying: Common Stock · 27,258 shares

Expires 2036-03-31

F1 · derivative.exercise_date: The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:56 UTC GrantStock Options · Derivative 27,907 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001878313-26-000039 · form4.xml · derivative · entry 1

CHAOUKI STEVEN M · CIK 0001776865 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,907

Underlying: Common Stock · 27,907 shares

Expires 2036-03-31

F1 · derivative.exercise_date: The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:53 UTC GrantStock Options · Derivative 33,748 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001878313-26-000035 · form4.xml · derivative · entry 1

Louie Ngar Yee · CIK 0001913264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,748

Underlying: Common Stock · 33,748 shares

Expires 2036-03-31

F1 · derivative.exercise_date: The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:51 UTC GrantStock Options · Derivative 28,556 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001878313-26-000033 · form4.xml · derivative · entry 1

Luput Cristian · CIK 0001913350 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,556

Underlying: Common Stock · 28,556 shares

Expires 2036-03-31

F1 · derivative.exercise_date: The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:50 UTC GrantStock Options · Derivative 27,258 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001878313-26-000031 · form4.xml · derivative · entry 1

Theagene Jean-Manasse · CIK 0001969857 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,258

Underlying: Common Stock · 27,258 shares

Expires 2036-03-31

F1 · derivative.exercise_date: The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:48 UTC
Smith StanDirector
GrantStock Options · Derivative 33,099 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001878313-26-000029 · form4.xml · derivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 33,099

Underlying: Common Stock · 33,099 shares

Expires 2036-03-31

F1 · derivative.exercise_date: The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

F2 · ownership.direct: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

Read SEC document
December 31, 2025 Filed Jan 5, 2026 13:44 UTC GrantOptions · Derivative 24,060 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001878313-26-000018 · form4.xml · derivative · entry 1

Theagene Jean-Manasse · CIK 0001969857 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,060

Underlying: Common Stock · 24,060 shares

Expires 2035-12-31

F1 · derivative.exercise_date: The stock options, granted on December 31, 2025 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
December 31, 2025 Filed Jan 5, 2026 13:42 UTC
Smith StanDirector
GrantOptions · Derivative 29,216 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001878313-26-000016 · form4.xml · derivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 29,216

Underlying: Common Stock · 29,216 shares

Expires 2035-12-31

F1 · derivative.exercise_date: The stock options, granted on December 31, 2025 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

F2 · ownership.direct: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

Read SEC document
December 31, 2025 Filed Jan 5, 2026 13:41 UTC GrantOptions · Derivative 25,206 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001878313-26-000014 · form4.xml · derivative · entry 1

Luput Cristian · CIK 0001913350 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,206

Underlying: Common Stock · 25,206 shares

Expires 2035-12-31

F1 · derivative.exercise_date: The stock options, granted on December 31, 2025 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
December 31, 2025 Filed Jan 5, 2026 13:39 UTC GrantOptions · Derivative 29,789 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001878313-26-000012 · form4.xml · derivative · entry 1

Louie Ngar Yee · CIK 0001913264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,789

Underlying: Common Stock · 29,789 shares

Expires 2035-12-31

F1 · derivative.exercise_date: The stock options, granted on December 31, 2025 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

Read SEC document
December 31, 2025 Filed Jan 5, 2026 13:38 UTC GrantOptions · Derivative 24,060 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001878313-26-000010 · form4.xml · derivative · entry 1

Guerrero Ramiro · CIK 0001913253 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,060

Underlying: Common Stock · 24,060 shares

Expires 2035-12-31

F1 · derivative.exercise_date: The stock options, granted on December 31, 2025 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

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December 31, 2025 Filed Jan 5, 2026 13:36 UTC GrantOptions · Derivative 24,633 $0.00 Strike: $1.53 $0.00
Disclosure

SEC source: 0001878313-26-000008 · form4.xml · derivative · entry 1

CHAOUKI STEVEN M · CIK 0001776865 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,633

Underlying: Common Stock · 24,633 shares

Expires 2035-12-31

F1 · derivative.exercise_date: The stock options, granted on December 31, 2025 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest 100% on the date of the grant and are exercisable beginning as of that date.

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December 22, 2025 Filed Dec 23, 2025 13:18 UTC
Smith StanDirector
PurchaseStock Options · Derivative 57,189 $1.36 Strike: $1.36 $77,777.04
Disclosure

SEC source: 0001878313-25-000073 · form4.xml · derivative · entry 5

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 57,189

Underlying: Common Stock · 57,189 shares

Expires 2028-12-22

F6 · shares: These warrants were purchased pursuant to a Securities Purchase Agreement and were deemed options under the Issuer's 2021 Equity Incentive Plan on December 22, 2025. The options are exercisable beginning on the sixth month anniversary of the issuance date and expire 3-years after the initial issuance date.

F7 · ownership.nature: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

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December 22, 2025 Filed Dec 23, 2025 13:18 UTC
Smith StanDirector
PurchaseCommon Stock 57,189 $1.22 $69,999.34
Disclosure

SEC source: 0001878313-25-000073 · form4.xml · nonDerivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,421,478

F1 · shares: The common stock was purchased pursuant to a Securities Purchase Agreement and were issued under the Issuer's 2021 Equity Incentive Plan on December 22, 2025.

F2 · ownership.nature: These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.

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December 22, 2025 Filed Dec 23, 2025 13:16 UTC PurchaseStock Options · Derivative 40,849 $1.36 Strike: $1.36 $55,554.64
Disclosure

SEC source: 0001878313-25-000071 · form4.xml · derivative · entry 2

CHAOUKI STEVEN M · CIK 0001776865 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,849

Underlying: Common Stock · 40,849 shares

Expires 2028-12-22

F2 · shares: These warrants were purchased pursuant to a Securities Purchase Agreement and were deemed options under the Issuer's 2021 Equity Incentive Plan on December 22, 2025. The options are exercisable beginning on the six month anniversary of the issuance date and expire 3-years after the initial issuance date.

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December 22, 2025 Filed Dec 23, 2025 13:16 UTC PurchaseCommon Stock 40,849 $1.22 $49,999.18
Disclosure

SEC source: 0001878313-25-000071 · form4.xml · nonDerivative · entry 1

CHAOUKI STEVEN M · CIK 0001776865 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,873

F1 · shares: The common stock was purchased pursuant to a Securities Purchase Agreement and were issued under the Issuer's 2021 Equity Incentive Plan on December 22, 2025.

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December 22, 2025 Filed Dec 23, 2025 13:14 UTC PurchaseStock Options · Derivative 81,699 $1.36 Strike: $1.36 $111,110.64
Disclosure

SEC source: 0001878313-25-000069 · form4.xml · derivative · entry 2

Louie Ngar Yee · CIK 0001913264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,699

Underlying: Common Stock · 81,699 shares

Expires 2028-12-22

F2 · shares: These warrants were purchased pursuant to a Securities Purchase Agreement and were deemed options under the Issuer's 2021 Equity Incentive Plan on December 22, 2025. The options are exercisable beginning on the six month anniversary of the issuance date and expire 3-years after the initial issuance date.

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December 22, 2025 Filed Dec 23, 2025 13:14 UTC PurchaseCommon Stock 81,699 $1.22 $99,999.58
Disclosure

SEC source: 0001878313-25-000069 · form4.xml · nonDerivative · entry 1

Louie Ngar Yee · CIK 0001913264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,248,888

F1 · shares: The common stock was purchased pursuant to a Securities Purchase Agreement and were issued under the Issuer's 2021 Equity Incentive Plan on December 22, 2025

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December 05, 2025 Filed Dec 9, 2025 21:51 UTC
Smith StanDirector
PurchaseCommon Stock 4,580 $1.20 $5,496.00
Disclosure

SEC source: 0001878313-25-000063 · form4.xml · nonDerivative · entry 3

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 4,580

F3 · ownership.nature: These securities are beneficially owned by Mr. Smith through the Blake Sarai Teitei Smith IL Unif Trns Min Act. They are beneficially owned by Mr. Smith's family member. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 05, 2025 Filed Dec 9, 2025 21:51 UTC
Smith StanDirector
PurchaseCommon Stock 4,580 $1.19 $5,450.20
Disclosure

SEC source: 0001878313-25-000063 · form4.xml · nonDerivative · entry 2

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 4,580

F2 · ownership.nature: These securities are beneficially owned by Mr. Smith through the Gage Quentin Smith IL Unif Trns Min Act. They are beneficially owned by Mr. Smith's family member. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 05, 2025 Filed Dec 9, 2025 21:51 UTC
Smith StanDirector
PurchaseCommon Stock 4,580 $1.20 $5,494.63
Disclosure

SEC source: 0001878313-25-000063 · form4.xml · nonDerivative · entry 1

Smith Stan · CIK 0001913199 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 4,580

F1 · ownership.nature: These securities are beneficially owned by Mr. Smith through the Travis Deo Zai Zai Smith IL Unif Trns Min Act. They are beneficially owned by Mr. Smith's family member. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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November 28, 2025 Filed Dec 1, 2025 11:20 UTC
Vitoc VladDirector · Chief Executive Officer · 10% owner
PurchaseCommon Stock 50,000 $1.14 $56,830.00
Disclosure

SEC source: 0001878313-25-000056 · form4.xml · nonDerivative · entry 1

Vitoc Vlad · CIK 0001913257 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 881,421

F1 · price: The price reported is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $1.1283 to $1.1416, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of the issuer, or to the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.