0001562180-18-002849.txt : 20180604 0001562180-18-002849.hdr.sgml : 20180604 20180604214214 ACCESSION NUMBER: 0001562180-18-002849 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180601 FILED AS OF DATE: 20180604 DATE AS OF CHANGE: 20180604 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: 18879942 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 primarydocument.xml PRIMARY DOCUMENT X0306 4 2018-06-01 false 0001656328 Sienna Biopharmaceuticals, Inc. SNNA 0001051411 MAST ERLE T C/O SIENNA BIOPHARMACEUTICALS, INC. 30699 RUSSELL RANCH ROAD, SUITE 140 WESTLAKE VILLAGE CA 91362 true false false false Stock Options (Right to buy) 15.08 2018-06-01 4 A false 10000.00 0.00 A 2028-06-01 Common Stock 10000.00 10000.00 D The option vests with respect to 1/12th of the shares subject thereto on each monthly anniversary of the grant date, subject to continued service through each applicable vesting date. /s/ Timothy K. Andrews, attorney-in-fact for Erle T. Mast 2018-06-04