0000950170-23-037973.txt : 20230803 0000950170-23-037973.hdr.sgml : 20230803 20230803161053 ACCESSION NUMBER: 0000950170-23-037973 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230801 FILED AS OF DATE: 20230803 DATE AS OF CHANGE: 20230803 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Shukla Sath CENTRAL INDEX KEY: 0001782817 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38266 FILM NUMBER: 231140059 MAIL ADDRESS: STREET 1: C/O ZIOPHARM ONCOLOGY, INC. STREET 2: ONE FIRST AVENUE, PARRIS BUILDING #34 CITY: BOSTON STATE: MA ZIP: 02129 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 ownership.xml 4 X0508 4 2023-08-01 0001701108 Spero Therapeutics, Inc. SPRO 0001782817 Shukla Sath C/O SPERO THERAPEUTICS, INC. 675 MASSACHUSETTS AVENUE, 14TH FLOOR CAMBRIDGE MA 02139 true true false false CEO and President false Common Stock 2023-08-01 4 A false 266000 0 A 578517 D Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs vest in four equal annual installments beginning on August 1, 2024, subject to the Reporting Person's continued service through the applicable vesting date. /s/ Tamara Joseph, Attorney-in-Fact for Sath Shukla 2023-08-03