STOCK TITAN

MAIA Biotechnology (MAIA) director boosts stake to 601,911 shares

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

MAIA Biotechnology, Inc. (MAIA) director Ramiro Guerrero purchased common stock in an open-market or private transaction. On 2026-08-24, he bought 1,794 shares of MAIA common stock at a price of $1.33 per share, bringing his directly held position to 601,911 shares of common stock following the transaction.

Positive

  • None.

Negative

  • None.
Insider Guerrero Ramiro
Role Director
Bought 1,794 shs ($2K)
Type Security Shares Price Value
Purchase Common Stock 1,794 $1.33 $2K
Holdings After Transaction: Common Stock — 601,911 shares (Direct)
Shares purchased 1,794 shares of Common Stock Non-derivative purchase on 2026-08-24
Purchase price $1.33 per share Price for the 1,794-share purchase on 2026-08-24
Shares owned after transaction 601,911 shares of Common Stock Direct ownership following the reported purchase
Common Stock financial
"The filing reports a transaction in "Common Stock" as a non-derivative security."
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
non-derivative financial
"The transaction is classified as a "non-derivative" transaction in Common Stock."
open market or private transaction financial
"The transaction code description is "Purchase in open market or private transaction"."

FAQ

What insider transaction did MAIA (MAIA) disclose in this Form 4?

The filing reports that director Ramiro Guerrero purchased 1,794 shares of MAIA common stock on 2026-08-24 in an open-market or private transaction at $1.33 per share.

How many MAIA (MAIA) shares did Ramiro Guerrero own after the reported transaction?

After the purchase, Ramiro Guerrero directly owned 601,911 shares of MAIA Biotechnology, Inc. common stock, as reported in the Form 4.

At what price did the MAIA (MAIA) insider buy shares?

The insider purchase by director Ramiro Guerrero was executed at a price of $1.33 per share for 1,794 shares of MAIA common stock.

Was the MAIA (MAIA) insider transaction a buy or a sell?

The reported transaction was a purchase of MAIA common stock. Director Ramiro Guerrero acquired 1,794 shares in an open-market or private transaction, increasing his directly held stake to 601,911 shares.

Were there any derivative securities involved in this MAIA (MAIA) Form 4?

No derivative securities were reported in this Form 4. The filing shows only a non-derivative transaction in MAIA common stock, with 1,794 shares purchased by director Ramiro Guerrero.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
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*
Guerrero Ramiro

(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)
08/24/2026
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
Common Stock08/24/2026P1,794A$1.33601,911D
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
Explanation of Responses:
/s/ Ramiro Guerrero08/26/2026
** 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)