0000899243-23-004039.txt : 20230206 0000899243-23-004039.hdr.sgml : 20230206 20230206161511 ACCESSION NUMBER: 0000899243-23-004039 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230203 FILED AS OF DATE: 20230206 DATE AS OF CHANGE: 20230206 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Mahadevia Ankit CENTRAL INDEX KEY: 0001720974 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38266 FILM NUMBER: 23590828 MAIL ADDRESS: STREET 1: C/O SPERO THERAPEUTICS, INC. STREET 2: 675 MASSACHUSETTS AVE., 14TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Spero Therapeutics, Inc. CENTRAL INDEX KEY: 0001701108 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 675 MASSACHUSETTS AVENUE STREET 2: 14TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 BUSINESS PHONE: 857-242-1600 MAIL ADDRESS: STREET 1: 675 MASSACHUSETTS AVENUE STREET 2: 14TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 FORMER COMPANY: FORMER CONFORMED NAME: Spero Therapeutics, LLC DATE OF NAME CHANGE: 20170316 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2023-02-03 0 0001701108 Spero Therapeutics, Inc. SPRO 0001720974 Mahadevia Ankit C/O SPERO THERAPEUTICS, INC. 675 MASSACHUSETTS AVENUE, 14TH FLOOR CAMBRIDGE MA 02139 1 1 0 0 CEO and President Common Stock 2023-02-03 4 S 0 12286 1.81 D 797832 D The reported transaction is a sale of common stock effected to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs") that were granted to the Reporting Person on February 1, 2022 pursuant to a "sell to cover" provision included in the RSU Agreement. Amount includes 65,817 shares of common stock held by the Mahadevia-Mehta Family Trust, of which the Reporting Person is a trustee. Amount also includes 691,205 RSUs held by the Reporting Person. /s/ Tamara Joseph, Attorney-in-Fact for Ankit Mahadevia 2023-02-06