ClearSign Technologies Corporation

CLIRNASDAQ · Industrial Instruments for Measurement, Display, and Control

Financing

SEC filings to 2026-10-05 · every row opens its filing

Shares on issue

6.31M

on 2026-06-30, from 3.90M on 2024-03-31 10-Q ↗

Earlier counts are adjusted for the 1-for-10 reverse split; each bar's tip shows the count as filed.

a raise that quarter, at its price

Newest

$50.0M

S-3 of 2025-07-17. 1 prospectus supplement filed under it since. S-3 ↗

$6.9M

H.C. Wainwright, agreement of 2025-07-17. No at-the-market sales statement read from a 10-Q or 10-K. 424B5 ↗

Warrants

The 10-Q filed 2026-08-14 is not read yet.

Cash

6.9 quarters

$9.9M on 2026-06-30 ÷ $1.4M a quarter of operating cash used, the average of four quarters. 10-Q ↗

Raised
Date	What	Shares	Price	Gross	Filing
2026-07-21	Private placement	500,000	$3.54	$1.8M	8-K ↗
2026-05-28	Public offering	not read	$6.94	$3.4M	424B5 ↗
2025-08-21	Public offering with warrants at $1.05	5,267,222	not read	not read	424B4 ↗

Also on file: a 1-for-10 reverse split, 2026-03-06 8-K ↗