Monitor the final pricing terms (share count, price, proceeds) when the final prospectus supplement is filed. The offering is a clear signal of cash burn and capital needs after a severe Q1 miss. Expect further downside pressure as dilution crystallizes. The 90-day lock-up provides some near-term support, but the ATM re-opening after 30 days adds overhang.
Price Chart
Executive Summary
ClearSign Technologies filed a preliminary prospectus supplement for an underwritten public offering of common stock via Newbridge Securities Corporation, with all pricing terms (share count, price, proceeds) left as placeholders. The offering follows a Q1 2026 earnings miss (revenue down 50% YoY to ~$200K, EPS -$0.39 vs -$0.28 consensus) filed 7 days prior, and the company recently suspended its ATM program. The filing signals immediate dilutive capital raise needs from a distressed financial position.
Key Facts
- Preliminary prospectus supplement for an underwritten common stock offering; all pricing terms (share count, price, proceeds) are TBD placeholders.
- Offering follows Q1 2026 earnings miss filed May 21, 2026: revenue ~$200K (down 50% YoY, 85% below $1.3M consensus), EPS -$0.39 (39% below -$0.28 estimate).
- Company suspended its ATM program on May 26, 2026, two days before this filing, indicating a shift to a larger underwritten offering.
- Net tangible book value as of March 31, 2026 was $6.9M ($1.27/share); the offering will cause immediate and substantial dilution to new investors.
- Cumulative losses since inception total $106.7M; company has raised ~$105.3M in gross equity proceeds historically.
- 90-day lock-up agreements for officers, directors, and the company, with an exception allowing ATM sales after 30 days.
- Underwriter (Newbridge Securities) has a 30-day over-allotment option for additional shares.
- Stock closed at $4.45 on May 27, 2026; public float is $36.8M based on 5.3M non-affiliate shares at $6.94 (April 6 close).
Financial Impact
Offering size undisclosed but constrained by S-3 I.B.6 limit of 1/3 of public float (~$12.3M max). Net tangible book value of $6.9M will be diluted; existing shareholders face immediate per-share dilution.
Risk Factors
- Dilution from the offering will reduce existing shareholders' ownership and EPS.
- Revenue decline of 50% YoY and ongoing losses suggest the company may need additional capital beyond this offering.
- Substantial warrant overhang: 2.04M redeemable warrants at $10.50 and 2.04M pre-funded warrants at $0.001 could further dilute if exercised.
- Nasdaq compliance regained via reverse split, but low revenue and cash burn create ongoing listing risk.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 424B5 Filing (Primary) | 0001104659-26-067545 |
| Document: 0001104659-26-067545-index-headers.html | 0001104659-26-067545 |
| Document: 0001104659-26-067545-index.html | 0001104659-26-067545 |
| Document: 0001104659-26-067545.txt | 0001104659-26-067545 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 14, 2026 6w ago | 8-K | $3.85 $3.79 | ▼ −1.56% | ▼ −1.66% | $2.30 (−40.26%) |
Aug 11, 2026 11w ago | 8-K | $4.17 $4.67 | ▲ +11.99% | ▲ +12.39% | $2.30 (−44.84%) |
Jul 23, 2026 13w ago | 8-K | $3.35 $3.90 | ▲ +16.42% | ▲ +15.94% | $2.30 (−31.34%) |
Jun 1, 2026 21w ago | 8-K | $4.47 $3.94 | ▲ +11.86% | ▲ +9.11% | $2.30 (+48.55%) |
Jun 1, 2026 21w ago | 424B5 | $4.47 $3.94 | ▲ +11.86% | ▲ +9.11% | $2.30 (+48.55%) |
May 28, 2026 21w ago | 424B5 | $4.63 $4.38 | ▲ +5.40% | ▲ +5.11% | $2.30 (+50.32%) |
May 28, 2026 21w ago | 8-K | $4.63 $3.94 | ▼ −14.90% | ▼ −12.38% | $2.30 (−50.32%) |
May 21, 2026 22w ago | 8-K | $4.85 $4.47 | ▲ +7.84% | ▲ +9.49% | $2.30 (+52.58%) |
Apr 10, 2026 28w ago | 8-K | $5.39 $5.41 | ▲ +0.37% | ▼ −2.92% | $2.30 (−57.33%) |
US Market Status
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