Saturday 17 October 2026 Export CLIR’s income statement to Excel — free account

ClearSign Technologies Corporation

CLIR Industrials Pollution & Treatment Controls

ClearSign Technologies Corporation’s revenue for fiscal 2025 (year ended December 2025) was $5.2 million, up 45.6% from fiscal 2024. In the quarter to June 2026, revenue grew 321.1%, EPS grew 26.7% and free cash flow fell 137.5%, each against the same quarter a year earlier. Revenue growth for three consecutive years; insiders bought in the last twelve months.

2.40 0.05 −2.04%

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Market cap: $16.7M
P/E: 0.0×
Fwd P/E: 0.0×
Dividend yield: —
F-score: 4/9
Altman Z: −5.50
Beneish M: 1.98
Dividend safety: n/a

Overview Business Profile Financial Analysis Income Statement Balance Sheet Cash Flow Metrics & Ratios 10-Q 10-K

Insider Decisions trades per month

Total buys 1.80

Totals in millions of $.

	Dec 25			Mar 26			Jun 26			Sep 26
Buy	—	—	—	—	1	1	—	—	1	—	—	—
Sell	—	—	—	—	—	—	—	—	—	—	—	—

Insider Ownership 0.00%

Capital & Financial Ratios $m

Market Cap 16.68

Revenue 5.45

Net Income (5.24)

Free Cash Flow (5.83)

Net Debt (9.89)

Current Ratio 4.78

Debt/Equity 0.00

P/E ratio 0.00

Fwd P/E 0.00

P/S ratio 2.61

P/B ratio 1.45

Past 5Y EPS Growth —

This Y EPS Growth 5.05%

Next Y EPS Growth 44.15%

Next Y revenue growth (43.77%)

Next 5Y EPS Growth 65.69%

Green and red mark values outside typical ranges. How we judge →

Valuation vs history

EV/Sales, ten years

P/S against its own 10 years 0.04%

10-year low 10-year high

P/B against its own 10 years 1.66%

10-year low 10-year high

EV/Sales against its own 10 years 0.04%

10-year low 10-year high

Dividends

Payout Ratio —

Annual Dividend Rate —

Annual Dividend Yield —

	total	individual payouts
2023	Powerpack
2022	Powerpack
2021	Powerpack
2019	Powerpack
2018	Powerpack
2017	Powerpack

special payouts not included in total or ratios

Assets vs Liabilities $m

	2023	2024	2025	Q'26
Cash	6	14	9	10
Receivables	0	0	1	0
Inventory	—	—	—	—
Other	0	1	0	0
	7	15	11	11

	2023	2024	2025	Q'26
Payables	0	1	2	1
ST’ Debt	—	—	—	—
Other	1	0	0	0
	2	2	3	2

Compound Annual Growth %

	10y	5y	3y
Sales	—	58.09%	140.98%
Cash Flow	0.00%	0.00%	0.00%
Earnings	0.00%	0.00%	0.00%
Book Value	(2.74%)	(0.02%)	(0.08%)

Revenue $m

	Mar	Jun	Sep	Dec	Year
’26	0	1	—	—	—
’25	0	0	1	4	5
’24	1	0	2	1	4
’23	1	0	0	1	2
’22	—	—	0	0	0
’21	0	—	0	0	1
’18	1	—	—	—	1

Fiscal quarters ending in the months shown.

Operating Cash Flow $m

	Mar	Jun	Sep	Dec	Year
’26	(1)	(1)	—	—	—
’25	(1)	(1)	(2)	(1)	(5)
’24	(1)	(2)	(1)	0	(4)
’23	(1)	0	(1)	(1)	(3)
’22	(2)	(2)	(1)	(1)	(5)
’21	(2)	(2)	(2)	(1)	(7)
’20	(1)	(2)	(1)	(2)	(6)

Fiscal quarters ending in the months shown.

Free Cash Flow $m

	Mar	Jun	Sep	Dec	Year
’26	(1)	(1)	—	—	—
’25	(1)	(1)	(2)	(1)	(5)
’24	(1)	(2)	(1)	0	(5)
’23	(1)	0	(1)	(2)	(3)
’22	(2)	(2)	(1)	(1)	(5)
’21	(2)	(2)	(2)	(1)	(7)
’20	(1)	(2)	(1)	(2)	(6)

Fiscal quarters ending in the months shown.

EPS $

	Mar	Jun	Sep	Dec	Year
’26	(0.39)	(0.22)	—	—	—
’25	(0.40)	(0.30)	(0.30)	(0.05)	(0.99)
’24	(0.30)	(0.40)	(0.20)	(0.20)	(1.10)
’23	(0.40)	(0.40)	(0.30)	(0.20)	(1.30)
’22	(0.50)	(0.50)	(0.30)	(0.30)	(1.60)
’21	(0.70)	(0.70)	(0.70)	(0.40)	(2.50)
’20	(0.70)	(0.50)	(0.60)	(0.60)	(2.50)

Fiscal quarters ending in the months shown.

Group	Line	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026e
Price, $
Price, $	Low	26.80	17.50	7.70	7.10	3.50	11.90	5.00	5.00	6.20	4.60	Analyst estimates 2026–2028 Powerpack
	High	62.40	47.00	36.00	15.00	41.10	60.00	17.80	17.50	17.20	16.00
People
People	Employees	20	18	18	15	15	12	16	15	18	15
	Revenue/emp, $m	0.03	0.03	0.03	0.00	0.00	0.05	0.02	0.16	0.20	0.35
Income, $m
Income, $m	Revenue	1	1	1	—	—	1	0	2	4	5
	Gross margin, %	21.90	29.63	19.43	0.00	0.00	(74.46)	31.02	34.00	31.09	27.21
	EBT	(11)	(10)	(9)	(8)	(7)	(8)	(6)	(5)	(5)	(5)
	EBT margin, %	(1,799.19)	(1,792.59)	(1,792.45)	0.00	0.00	(1,300.16)	(1,539.57)	(216.15)	(147.36)	(105.01)
	Net income	(11)	(10)	(9)	(8)	(7)	(8)	(6)	(5)	(5)	(5)
	Depreciation	0	0	0	0	0	1	0	0	0	0
Per share, $
Per share, $	Revenue	0.48	0.35	0.23	0.00	0.00	0.19	0.11	0.62	0.73	0.94
	Earnings	(8.60)	(6.30)	(4.20)	(3.20)	(2.50)	(2.50)	(1.60)	(1.30)	(1.10)	(0.99)
	Cash flow	(6.71)	(5.35)	(3.67)	(2.58)	(2.14)	(2.15)	(1.41)	(0.84)	(0.89)	(0.85)
	Capex	(0.82)	(0.27)	(0.22)	(0.16)	(0.07)	(0.07)	(0.04)	(0.05)	(0.04)	(0.02)
	Free cash flow	(7.52)	(5.63)	(3.89)	(2.74)	(2.21)	(2.22)	(1.45)	(0.89)	(0.94)	(0.87)
	Book value	1.74	1.58	7.40	3.46	3.43	2.65	2.70	1.35	2.81	1.72
	Shares, m	1	2	2	3	3	3	4	4	5	6
Valuation, ×
Valuation, ×	P/E	0.00	0.00	0.00	—	—	0.00	0.00	0.00	0.00	0.00
	P/S	57.54	46.49	16.29	—	—	37.91	30.31	17.14	19.60	5.94
	P/B	19.59	22.19	1.38	—	—	5.20	1.96	7.93	5.12	3.26
	EV/Sales	56.35	45.58	5.26	—	—	31.44	16.06	14.88	15.76	4.23
	EV/FCF	(4.43)	(6.10)	(0.85)	—	—	(5.17)	(1.94)	(10.43)	(12.35)	(4.57)
Cash, $m
Cash, $m	Operating cash flow	(9)	(8)	(8)	(7)	(6)	(7)	(5)	(3)	(4)	(5)
	Capex	(1)	0	(1)	0	0	0	0	0	0	0
	Free cash flow	(10)	(9)	(9)	(7)	(6)	(7)	(5)	(3)	(5)	(5)
Balance, $m
Balance, $m	Working capital	0	0	15	8	8	7	9	4	13	9
	Total debt	0	0	0	0	0	0	0	—	—	—
	Net debt	(1)	(1)	(16)	(8)	(9)	(8)	(9)	(6)	(14)	(9)
	Shareholders’ equity	2	2	17	9	10	8	10	5	14	10
Returns, %
Returns, %	ROA	(120.87)	(229.19)	(83.34)	(57.33)	(62.40)	(77.05)	(56.76)	(56.02)	(44.34)	(38.62)
	ROIC	(523.40)	(439.86)	(530.31)	(491.24)	(447.57)	(754.17)	(772.35)	0.00	0.00	(1,184.48)
	ROE	(150.76)	(414.03)	(98.24)	(64.89)	(73.36)	(88.55)	(64.57)	(70.46)	(55.91)	(47.19)

Negative figures in brackets.

All 10 years →

Fiscal years to Dec 2025 · latest quarter Jun 2026

Charts ten years each

Company	Market cap	P/E	Fwd P/E	Revenue growth (Q)	EPS growth (Q)	FCF growth (Q)	Gross margin (Q)	EBIT margin (Q)	Compare
FTEK Fuel Tech, Inc.	$44.3M	— (loss-making)	— (loss-making)	+16.68% (above 0%: growing)	n/m	−1,603.51% (below 0%: shrinking)	41.25%	(24.13%)	Compare
SCWO 374Water Inc.	$43.9M	— (loss-making)	—	+280.17% (above 0%: growing)	n/m	+85.28% (above 0%: growing)	87.67%	(71.70%)	Compare
BCHT Birchtech Corp.	$31.8M	— (loss-making)	— (loss-making)	+16.50% (above 0%: growing)	n/m	−68.00% (below 0%: shrinking)	27.24%	(42.81%)	Compare
CLIR ClearSign Technologies Corporation	$16.7M	— (loss-making)	— (loss-making)	+321.05% (above 0%: growing)	n/m	−137.48% (below 0%: shrinking)	40.71%	(267.50%)
LIQT LiqTech International, Inc.	$12.3M	— (loss-making)	— (loss-making)	−11.98% (below 0%: shrinking)	n/m	−99.23% (below 0%: shrinking)	8.38%	(53.44%)	Compare
TOMZ TOMI Environmental Solutions, Inc.	$12.2M	— (loss-making)	— (loss-making)	+117.91% (above 0%: growing)	n/m	−531.53% (below 0%: shrinking)	61.65%	(10.86%)	Compare
CLWT Euro Tech Holdings Company Limited	$10.7M	18.1×	—	−20.86% (below 0%: shrinking)	n/m	−164.72% (below 0%: shrinking)	18.83%	0.00%	Compare
RAIN Rain Enhancement Technologies Holdco, Inc.	$7.5M	— (loss-making)	—	—	n/m	−19.67% (below 0%: shrinking)	0.00%	0.00%	Compare
DEVSF DevvStream Corp.	$5.4M	— (loss-making)	—	−93.14% (below 0%: shrinking)	n/m	−110.89% (below 0%: shrinking)	(114.29%)	(305,500.00%)	Compare
Median of peers	$12.2M	—	—	+16.50%	—	−105.06%	23.04%	(33.47%)

All 18 Pollution & Treatment Controls stocks →

ClearSign Technologies Corporation (CLIR) key facts

Strength: ClearSign Technologies Corporation’s revenue for fiscal 2025 (year ended December 2025) was $5.2 million, up 45.6% from fiscal 2024.
ClearSign Technologies Corporation (CLIR) is a Pollution & Treatment Controls company in the Industrials sector, listed on Nasdaq.
As of October 16, 2026, CLIR traded at $2.40, a market capitalization of $16.7 million.
Return on equity was −47.2% and debt-to-equity 0.00.
Its Piotroski F-score is 4 out of 9 and its Altman Z-score is −5.50 (distress zone) for fiscal 2025.

Source: company filings (standardised) and stockrow calculations.