CLEARSIGN COMBUSTION CORP

Regulation FD Disclosure

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Rule 506(b) provides a "safer harbor" for a private offering

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Entry into a Material Definitive Agreement

Other Events

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Other Events

Submission of Matters to a Vote of Security Holders

Entry into a Material Definitive Agreement

Prospectus Supplement for Primary Offering

Other Events

Prospectus Supplement for Primary Offering

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Results of Operations and Financial Condition

Annual report pursuant to Section 13 or 15(d)

Other Events

Material Modifications to Rights of Security Holders

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Definitive Proxy Statement

Preliminary Proxy Statement

Results of Operations and Financial Condition

Regulation FD Disclosure

Results of Operations and Financial Condition

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

General form for quarterly reports under Section 13 or 15(d)

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

Prospectus Supplement with Pricing Information

Notice of Effectiveness

Correspondence with the SEC

Amended Initial Registration Statement

General form for quarterly reports under Section 13 or 15(d)

Letter from the SEC

Registration (IPO) statement under Securities Act of 1933

Notice of Effectiveness

Correspondence with the SEC

Letter from the SEC

Registration statement under Securities Act of 1933

Additional Information for Proxy Statement/ Votes

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

No description available

Annual report pursuant to Section 13 or 15(d) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

Letter from the SEC

Annual report pursuant to Section 13 or 15(d) (amendment)

Correspondence with the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

Prospectus Supplement with Pricing Information

Notice of Effectiveness

Correspondence with the SEC

06b

Amended Initial Registration Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Registration (IPO) statement under Securities Act of 1933

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

06b

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d) (amendment)

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Definitive Proxy Statement

Definitive Proxy Statement

Letter from the SEC

DIGIANDOMENICO ANTHONY

Silva Gil Todd

Saddler Larry Michael

Basenese Lou

Saddler Larry Michael

PASQUESI JOHN M

Basenese Lou

DIGIANDOMENICO ANTHONY

Silva Gil Todd

Silva Gil Todd

Deller Colin James

Basenese Lou

Silva Gil Todd

DIGIANDOMENICO ANTHONY

Silva Gil Todd

Deller Colin James

Hinds Brent

Hinds Brent

Hinds Brent