ClearSign Technologies Corp
CLIRNasdaqIndustrials · Industrial Instruments For Measurement, Display, and Control · DE · SEC filings ↗ · Compare ⊕
View price & chart on Yahoo Finance ↗Financials
SEC XBRL · annual| FY25 | FY24 | FY23 | FY22 | FY21 | FY20 | |
|---|---|---|---|---|---|---|
| Revenue | $401,000 | $1.1M | $894,000 | $0 | $363,000 | $0 |
| Operating income | −$6.7M | −$6.5M | −$6.0M | −$6.1M | −$8.1M | −$6.9M |
| Net income | −$2.1M | −$1.1M | −$1.4M | −$1.5M | −$2.0M | −$2.0M |
| Total assets | $12.2M | $15.9M | $7.6M | $10.9M | $9.4M | $11.1M |
| Total liabilities | $2.7M | $2.2M | $2.4M | $1.4M | $1.1M | $1.6M |
| Equity | $9.5M | $13.8M | $5.2M | $9.6M | $8.3M | $9.5M |
| EPS (diluted) | $-0.37 | $-0.03 | $-0.04 | $-0.05 | $-0.07 | — |
| Shares out. | 52 | 39.0M | 38.5M | 32.2M | 30.9M | 26.7M |
Reported figures from the company's SEC filings (XBRL). Blank where a line item isn't cleanly tagged — never estimated.
Key ratios
from filings · FY2025- Operating margin
- −1663.6%
- Net margin
- −517.7%
- Return on equity
- −21.8%
- Return on assets
- −17.0%
- Return on capital (ROCE)
- −69.5%
- Liabilities / assets
- 21.8%
- Debt / equity
- 0.28×
- Book value / share
- $183269.23
- Revenue growth (YoY)
- −63.6%
- Net income growth (YoY)
- —
Computed from the company's own SEC figures — no market price, so these are facts, not a valuation. Book value per share is reported equity ÷ shares; it is not the stock price.
Financial health
forensic scores · FY2025- Altman Z″ (distress)
- -23.22distress
- Accruals / assets
- 21.8%high accruals
- Piotroski F-Score
- 1/9weak
Altman Z″is a textbook bankruptcy-distress score from book values only (>2.6 safe · 1.1–2.6 grey · <1.1 distress). Accruals = (net income − operating cash flow) ÷ assets; persistently high accruals are an earnings-quality red flag. Beneish M-Scoreis an eight-ratio screen comparing this year with last (M > −1.78 = elevated manipulation-risk screen, not proof). Piotroski F-Scorecounts how many of nine fundamental-health checks pass (shown as passed / applicable; we use operating margin and total liabilities as documented proxies where the exact input isn't XBRL-tagged). Computed from SEC filings — descriptive factors, not advice or a forecast.
Quality score
EDS ScoreOur own multi-factor score from free SEC data — profitability, growth, financial strength, earnings quality, and event/ownership catalysts. No market price and no licensed model: each axis is the share of source-backed checks it passes. Descriptive factors, not advice or a forecast.
Signs
● 2 severe● 5 warning● 1 good- Altman Z″ in the distress zone
- Filed a late-filing notice (Form NT) — missed an SEC deadline
- Operating losses (negative operating margin)
- Reported a net loss
- Revenue declined year-over-year
- Negative operating cash flow
- High accruals — earnings-quality risk
- Conservative leverage (liabilities < 50% of assets)
Derived from the company's own SEC figures (fundamentals, forensic scores, filing discipline) — descriptive factors, not advice or a forecast.
Risk flags
late SEC filings- NT 10-Qmissed a reporting deadline ↗Aug 16, 2021
A Form NT means the company notified the SEC it would file a periodic report late — often an accounting, audit or liquidity warning sign. Also search SEC enforcement actions for this company.
5%+ owners
SEC Schedule 13D / 13G · last 3 yrs- Pasquesi John MPassive (13G)Apr 9, 2025
- Clirspv LlcActivist (13D)Feb 19, 2025
Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.
Short interest
FINRA · bi-monthly| Settlement | Shares short | Days to cover | Δ vs prior |
|---|---|---|---|
| May 15, 2026 | 26,072 | 1.4 | -0.2% |
| Apr 30, 2026 | 26,120 | 1.7 | +0.3% |
| Apr 15, 2026 | 26,031 | 1.0 | -42.9% |
| Mar 31, 2026 | 45,549 | 2.3 | -82.7% |
| Mar 13, 2026 | 263,955 | 1.1 | +48.3% |
Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.
Material events
SEC Form 8-K · most recent- Entered a material agreement · Other material eventJun 1, 2026
- Other material eventMay 28, 2026
- Results of operations · Regulation FD disclosureMay 21, 2026
- Results of operations · Regulation FD disclosureApr 10, 2026
- Other material eventMar 30, 2026
- Modified shareholder rights · Amended charter or bylaws · Regulation FD disclosureMar 10, 2026
- Shareholder vote · Item 5.08Mar 4, 2026
- Results of operations · Regulation FD disclosureFeb 25, 2026
Events the company reported on Form 8-K, labelled by the SEC item code it filed under — its own classification, not our interpretation.
Recent SEC filings
All filings ↗- 8-KFORM 8-KJun 1, 2026
- 424B5Jun 1, 2026
- 424B5May 28, 2026
- 8-KFORM 8-KMay 28, 2026
- 8-KFORM 8-KMay 21, 2026
- 10-QMay 15, 2026
- ARSApr 28, 2026
- DEFA14AApr 28, 2026
- DEF 14AApr 28, 2026
- 4/AOWNERSHIP DOCUMENTApr 27, 2026
- 4OWNERSHIP DOCUMENTApr 27, 2026
- 8-KFORM 8-KApr 10, 2026
- 4OWNERSHIP DOCUMENTApr 2, 2026
- 4OWNERSHIP DOCUMENTApr 2, 2026
- 4OWNERSHIP DOCUMENTApr 2, 2026