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Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001558370-22-005775
Filing Date
2022-04-22
Accepted
2022-04-22 09:02:09
Documents
3

Document Format Files

Seq Description Document Type Size
1 DEFA14A tmb-20220422xdefa14a.htm DEFA14A 16714
2 GRAPHIC tmb-20220422xdefa14a002.jpg GRAPHIC 114163
3 GRAPHIC tmb-20220422xdefa14a001.jpg GRAPHIC 182221
  Complete submission text file 0001558370-22-005775.txt   426266
Mailing Address 8023 E. 63RD PLACE, SUITE 101 TULSA OK 74133
Business Address 8023 E. 63RD PLACE, SUITE 101 TULSA OK 74133 (918) 236-7770
ClearSign Technologies Corp (Filer) CIK: 0001434524 (see all company filings)

IRS No.: 000000000 | State of Incorp.: WA | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-35521 | Film No.: 22843576
SIC: 3823 Industrial Instruments For Measurement, Display, and Control