Form 10-K/A - Annual report [Section 13 and 15(d), not S-K Item 405]: [Amend]
SEC Accession No. 0001104659-21-059140
Filing Date
2021-04-30
Accepted
2021-04-30 16:55:28
Documents
4
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K/A tm2114702d1_10ka.htm 10-K/A 200941
2 EXHIBIT 31.1 tm2114702d1_ex31-1.htm EX-31.1 4026
3 EXHIBIT 31.2 tm2114702d1_ex31-2.htm EX-31.2 3234
4 GRAPHIC tm2114702d1_10ka-img01.jpg GRAPHIC 4797
  Complete submission text file 0001104659-21-059140.txt   216108
Mailing Address 12870 INTERURBAN AVENUE SOUTH SEATTLE WA 98168
Business Address 12870 INTERURBAN AVENUE SOUTH SEATTLE WA 98168 (206) 673-4848
ClearSign Technologies Corp (Filer) CIK: 0001434524 (see all company filings)

EIN.: 000000000 | State of Incorp.: WA | Fiscal Year End: 1231
Type: 10-K/A | Act: 34 | File No.: 001-35521 | Film No.: 21879188
SIC: 3823 Industrial Instruments For Measurement, Display, and Control