0001144204-18-011797.txt : 20180228 0001144204-18-011797.hdr.sgml : 20180228 20180228163147 ACCESSION NUMBER: 0001144204-18-011797 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180227 FILED AS OF DATE: 20180228 DATE AS OF CHANGE: 20180228 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PIRNAT STEPHEN E CENTRAL INDEX KEY: 0001547961 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-35521 FILM NUMBER: 18651726 MAIL ADDRESS: STREET 1: 4728 EAST 98TH STREET CITY: TULSA STATE: OK ZIP: 74137 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CLEARSIGN COMBUSTION CORP CENTRAL INDEX KEY: 0001434524 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823] IRS NUMBER: 000000000 STATE OF INCORPORATION: WA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 12870 INTERURBAN AVENUE SOUTH CITY: SEATTLE STATE: WA ZIP: 98168 BUSINESS PHONE: (206) 673-4848 MAIL ADDRESS: STREET 1: 12870 INTERURBAN AVENUE SOUTH CITY: SEATTLE STATE: WA ZIP: 98168 4 1 tv487223_4.xml OWNERSHIP DOCUMENT X0306 4 2018-02-27 0 0001434524 CLEARSIGN COMBUSTION CORP CLIR 0001547961 PIRNAT STEPHEN E 12870 INTERURBAN AVENUE SOUTH SEATTLE WA 98168 1 1 0 0 Chief Executive Officer Common Stock/CLIR 2018-02-27 4 P 0 10000 2.25 A 113947 D /s/ Stephen E. Pirnat 2018-02-28