0001209191-15-052878.txt : 20150612 0001209191-15-052878.hdr.sgml : 20150612 20150612171733 ACCESSION NUMBER: 0001209191-15-052878 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20150611 FILED AS OF DATE: 20150612 DATE AS OF CHANGE: 20150612 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Mast Therapeutics, Inc. CENTRAL INDEX KEY: 0001160308 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 841318182 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 3611 VALLEY CENTRE DRIVE STREET 2: SUITE 500 CITY: SAN DIEGO STATE: CA ZIP: 92130 BUSINESS PHONE: 8585520866 MAIL ADDRESS: STREET 1: 3611 VALLEY CENTRE DRIVE STREET 2: SUITE 500 CITY: SAN DIEGO STATE: CA ZIP: 92130 FORMER COMPANY: FORMER CONFORMED NAME: ADVENTRX PHARMACEUTICALS INC DATE OF NAME CHANGE: 20030613 FORMER COMPANY: FORMER CONFORMED NAME: BIOKEYS PHARMACEUTICALS INC DATE OF NAME CHANGE: 20010928 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Shuster Lewis CENTRAL INDEX KEY: 0001471131 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-32157 FILM NUMBER: 15929376 MAIL ADDRESS: STREET 1: 421 BRIDOON TERRACE CITY: ENCINITAS STATE: CA ZIP: 92024 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2015-06-11 0 0001160308 Mast Therapeutics, Inc. MSTX 0001471131 Shuster Lewis 3611 VALLEY CENTRE DRIVE, SUITE 500 SAN DIEGO CA 92130 1 0 0 0 Stock Option (Right to Buy) 0.50 2015-06-11 4 A 0 82963 0.00 A 2025-06-11 Common Stock 82963 82963 D This option vests and becomes exercisable in 12 substantially equal monthly installments on each monthly anniversary of June 11, 2015, subject to the reporting person's continued service with the issuer. /s/ Brandi L. Roberts, Attorney-in-Fact for Lewis J. Shuster 2015-06-12