Sec Form 4 Filing - Ellias Helen K. @ SAB Biotherapeutics, Inc. - 2024-11-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED 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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Ellias Helen K. 2. Issuer Name and Ticker or Trading Symbol SAB Biotherapeutics, Inc. [ SABS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 777 W 41ST STREET, SUITE 401 3. Date of Earliest Transaction (MM/DD/YY) 11/01/2024 (Street) MIAMI BEACH, FL33140 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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) Code V Amount (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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (right to buy) ( 1 ) ( 3 ) $ 3.88 11/01/2024 A 20,000 ( 1 ) 11/01/2034 Common Stock 20,000 $ 0 20,000 D Stock Option (right to buy) ( 2 ) ( 3 ) $ 3.88 11/01/2024 A 35,000 ( 2 ) 11/01/2034 Common Stock 35,000 $ 0 35,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ellias Helen K. 777 W 41ST STREET, SUITE 401 MIAMI BEACH, FL33140 X Signatures /s/ Katie Ellias 11/05/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents the 2024 annual grant to the Reporting Person as a member of the Board of Directors of the Issuer (the "Board"). Shares underlying the option vest in two equal annual installments on November 1, 2025, and 2026. ( 2 )Represents the inaugural grant to the Reporting Person as a member of the Board. Shares underlying the option vest in three equal annual installments on November 1, 2025, 2026, and 2027. ( 3 )This award was made pursuant to the Issuer's 2021 Omnibus Equity Incentive Plan, as amended.

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).

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