0001140361-17-029596.txt : 20170801 0001140361-17-029596.hdr.sgml : 20170801 20170801162400 ACCESSION NUMBER: 0001140361-17-029596 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20170801 FILED AS OF DATE: 20170801 DATE AS OF CHANGE: 20170801 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: MAST ERLE T CENTRAL INDEX KEY: 0001051411 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38155 FILM NUMBER: 17997018 MAIL ADDRESS: STREET 1: C/O SPIROS DEVELOPMENT CORP II INC STREET 2: 7475 LUSK BLVD CITY: SAN DIEGO STATE: CA ZIP: 92121 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Sienna Biopharmaceuticals, Inc. CENTRAL INDEX KEY: 0001656328 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 273364627 STATE OF INCORPORATION: DE FISCAL YEAR END: 0630 BUSINESS ADDRESS: STREET 1: 30699 RUSSELL RANCH ROAD, SUITE 140 CITY: WESTLAKE VILLAGE STATE: CA ZIP: 91362 BUSINESS PHONE: (818) 629-2256 MAIL ADDRESS: STREET 1: 30699 RUSSELL RANCH ROAD, SUITE 140 CITY: WESTLAKE VILLAGE STATE: CA ZIP: 91362 FORMER COMPANY: FORMER CONFORMED NAME: Sienna Labs, Inc. DATE OF NAME CHANGE: 20151020 4 1 doc1.xml FORM 4 X0306 4 2017-08-01 0 0001656328 Sienna Biopharmaceuticals, Inc. SNNA 0001051411 MAST ERLE T C/O SIENNA BIOPHARMACEUTICALS, INC. 30699 RUSSELL RANCH ROAD, SUITE 140 WESTLAKE VILLAGE CA 91362 1 0 0 0 Common Stock 2017-08-01 4 P 0 6700 15 A 6700 D The Reporting Person purchased the shares of the Issuer's common stock in connection with the Issuer's initial public offering at the offering price of $15.00 per share. /s/ Timothy K. Andrews, attorney-in-fact for Erle T. Mast 2017-08-01