<SEC-DOCUMENT>0001104659-21-054467-index.html : 20210423 <SEC-HEADER>0001104659-21-054467.hdr.sgml : 20210423 <ACCEPTANCE-DATETIME>20210423161542 ACCESSION NUMBER: 0001104659-21-054467 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210420 ITEM INFORMATION: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers FILED AS OF DATE: 20210423 DATE AS OF CHANGE: 20210423 FILER: COMPANY DATA: COMPANY CONFORMED NAME: ClearSign Technologies 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 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-35521 FILM NUMBER: 21849874 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 FORMER COMPANY: FORMER CONFORMED NAME: CLEARSIGN COMBUSTION CORP DATE OF NAME CHANGE: 20080507 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>tm2113920d1_8k.htm <DESCRIPTION>FORM 8-K <TEXT> Document 1 - file: tm2113920d1_8k.htm
</DOCUMENT> </SEC-DOCUMENT>