Sec Form 4 Filing - Chiddix James A. @ Starry Group Holdings, Inc. - 2022-03-29

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 Chiddix James A. 2. Issuer Name and Ticker or Trading Symbol Starry Group Holdings, Inc. [ STRY] 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 STARRY GROUP HOLDINGS, INC., 38 CHAUNCY STREET, SUITE 200 3. Date of Earliest Transaction (MM/DD/YY) 03/29/2022 (Street) BOSTON, MA02111 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 Class A Common Stock 03/29/2022 A 70,773 A 70,773 D

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) $ 0.93 03/29/2022 A 55,223 ( 2 ) 01/23/2027 Class A Common Stock 55,223 ( 1 ) 55,223 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Chiddix James A. C/O STARRY GROUP HOLDINGS, INC. 38 CHAUNCY STREET, SUITE 200 BOSTON, MA02111 X Signatures /s/ William Lundregan, attorney-in-fact 03/31/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the Agreement and Plan of Merger, dated as of October 6, 2021 (as the same has been or may be amended, modified, supplemented or waived from time to time, the "Merger Agreement") by and among FirstMark Horizon Acquisition Corp. ("FMAC"), Sirius Merger Sub, Inc., Starry, Inc. ("Starry"), and Starry Group Holdings, Inc. (the "Issuer"), (i) all outstanding Starry capital stock held by the Reporting Person was cancelled and automatically converted into the right to receive a number of shares Class A Common Stock of the Issuer equal to the applicable exchange ratio (as described in the Merger Agreement) and (ii) each outstanding Starry equity award was converted into a corresponding equity award of the Issuer, on the same terms and conditions as were applicable to the Starry equity award, based on the applicable exchange ratio (determined in accordance with the Merger Agreement). ( 2 )The option is fully vested and exercisable.

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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