X0306 4 2022-03-29 0 0001884697 Starry Group Holdings, Inc. STRY 0001399504 Lipowski Joseph T C/O STARRY GROUP HOLDINGS, INC. 38 CHAUNCY STREET, SUITE 200 BOSTON MA 02111 0 1 0 0 See Remarks Class A Common Stock 2022-03-29 4 A 0 5522363 A 5522363 D 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"), 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). Executive Vice President and Chief Technology Officer /s/ William Lundregan, attorney-in-fact 2022-03-31