0001209191-15-052862.txt : 20150612 0001209191-15-052862.hdr.sgml : 20150612 20150612171251 ACCESSION NUMBER: 0001209191-15-052862 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: Culley Brian M CENTRAL INDEX KEY: 0001310683 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-32157 FILM NUMBER: 15929317 MAIL ADDRESS: STREET 1: 6725 MESA RIDGE ROAD STREET 2: SUITE 100 CITY: SAN DIEGO STATE: CA ZIP: 92121 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2015-06-11 0 0001160308 Mast Therapeutics, Inc. MSTX 0001310683 Culley Brian M 3611 VALLEY CENTRE DRIVE, SUITE 500 SAN DIEGO CA 92130 1 1 0 0 CEO and Director Employee Stock Option (Right to Buy) 0.50 2015-06-11 4 A 0 888900 0.00 A 2025-06-11 Common Stock 888900 888900 D This option vests and becomes exercisable in 48 substantially equal monthly installments on each monthly anniversary of June 11, 2015, subject to the reporting person's continued service. /s/ Brandi L. Roberts, Attorney-in-Fact for Brian M. Culley 2015-06-12