Sec Form 4 Filing - PRENDERGAST JOHN K A @ HEAT BIOLOGICS, INC. - 2021-12-30

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 PRENDERGAST JOHN K A 2. Issuer Name and Ticker or Trading Symbol HEAT BIOLOGICS, INC. [ HTBX] 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) C/O HEAT BIOLOGICS, INC., 627 DAVIS DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 12/30/2021 (Street) MORRISVILLE, NC27560 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) $ 4.06 12/30/2021 J( 1 ) 129,820 01/13/2022 12/12/2031 Common Stock 129,820 $ 0 0 D Stock Option (right to buy) $ 4.06 12/30/2021 A( 1 ) 129,820 01/13/2022( 2 ) 12/29/2031 Common Stock 129,820 $ 0 129,820 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other PRENDERGAST JOHN K A C/O HEAT BIOLOGICS, INC. 627 DAVIS DRIVE MORRISVILLE, NC27560 X Signatures /s/ John K. A. Prendergast 01/03/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 30, 2021, the board of directors of Heat Biologics, Inc. (the "Company") rescinded and cancelled stock option awards previously made to Dr. Prendergast on December 13, 2021 covering 129,820 shares under the Company's 2018 Stock Incentive Plan (the "Plan") and granted new stock options under the Plan, on substantially similar terms to the rescinded stock options, which new stock options are subject to forfeiture in the event an amendment to increase the number of shares of common stock available for grant under the Plan is not adopted by the Company's stockholders. ( 2 )These stock options vest pro rata on a monthly basis over a twelve- month period commencing 1/13/2022

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