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[Form 4] MAIA Biotechnology, Inc. Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

MAIA Biotechnology director Stan Smith reported an award of stock options as compensation. On March 31, 2026, an entity associated with him, The Stan V. Smith Trust Dated 1993, received 33,099 stock options under MAIA Biotechnology, Inc.'s 2021 Equity Incentive Plan.

The options give the right to buy an equal number of shares of common stock at an exercise price of $1.40 per share. They vest 100% on the grant date and are exercisable beginning that day, expiring on March 31, 2036. After this grant, the filing shows 33,099 options indirectly beneficially owned.

Positive

  • None.

Negative

  • None.
Insider Smith Stan
Role Director
Type Security Shares Price Value
Grant/Award Stock Options 33,099 $0.00 --
Holdings After Transaction: Stock Options — 33,099 shares (Indirect, See footnote)
Footnotes (1)
  1. 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. These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.
Options granted 33,099 options Stock options granted on March 31, 2026
Exercise price $1.40 per share Strike price for MAIA common stock
Expiration date March 31, 2036 Option term under 2021 Equity Incentive Plan
Post-transaction options held 33,099 options Total derivative securities following transaction
Vesting 100% on grant date Options vest fully on March 31, 2026
Stock Options financial
"The stock options, granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan"
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
2021 Equity Incentive Plan financial
"granted on March 31, 2026 pursuant to the MAIA Biotechnology, Inc's 2021 Equity Incentive Plan"
beneficially owned financial
"These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993."
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
indirect ownership financial
"total_shares_following_transaction 33099.0000, direct_or_indirect I, nature_of_ownership See footnote"
exercise price financial
"conversion_or_exercise_price 1.4000"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Smith Stan

(Last)(First)(Middle)
444 WEST LAKE STREET, SUITE 1700

(Street)
CHICAGO ILLINOIS 60606

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
MAIA Biotechnology, Inc. [ MAIA ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options$1.403/31/2026A33,09903/31/2026(1)03/31/2036Common Stock33,099$033,099I(2)See footnote
Explanation of Responses:
1. 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.
2. These securities are beneficially owned by Mr. Smith through The Stan V. Smith Trust Dated 1993.
/s/ Stan V. Smith04/02/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)