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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| Dec '25 | Dec '24 | Dec '23 | Dec '22 | Dec '21 | Dec '20 | Dec '19 | Dec '18 | Dec '17 | Dec '16 | |
|---|---|---|---|---|---|---|---|---|---|---|
Piotroski F-Score |
4 | 5 | 5 | — | — | — | — | 4 | 4 | — |
P/E ratio |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 |
P/S ratio |
5.94 | 19.60 | 17.14 | 30.31 | 37.91 | — | — | 16.29 | 46.49 | 57.54 |
Altman Z-Score |
(5.50) | 8.12 | (8.26) | (3.87) | 9.68 | — | — | 2.91 | (5.06) | (8.68) |
P/FCF ratio |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 |
Altman Z″-Score (non-manufacturers) |
(23.22) | (11.60) | (39.46) | (17.72) | (21.51) | — | — | 1.61 | (52.98) | (46.77) |
Beneish M-Score |
1.98 | (2.80) | 0.42 | (2.56) | — | — | — | (3.30) | (3.30) | — |
P/Operating CF |
(24.23) | (169.82) | (28.41) | (25.73) | (36.99) | — | — | (11.31) | (24.74) | (19.49) |
P/B ratio |
3.26 | 5.12 | 7.93 | 1.96 | 5.20 | — | — | 1.38 | 22.19 | 19.59 |
Price to Tangible BV |
3.54 | 5.45 | 9.46 | 2.14 | 5.76 | — | — | 1.54 | 93.70 | 86.36 |
EV/Sales |
4.23 | 15.76 | 14.88 | 16.06 | 31.44 | — | — | 5.26 | 45.58 | 56.35 |
EV/EBITDA |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 |
EV/Operating CF |
(4.68) | (12.96) | (11.06) | (1.99) | (5.33) | — | — | (0.90) | (6.41) | (4.96) |
EV/FCF |
(4.57) | (12.35) | (10.43) | (1.94) | (5.17) | — | — | (0.85) | (6.10) | (4.43) |
Quick Ratio |
4.08 | 5.90 | 2.65 | 7.97 | 10.45 | 8.26 | 6.62 | 9.72 | 0.93 | 0.81 |
Current Ratio |
4.34 | 6.32 | 2.89 | 8.49 | 10.98 | 8.69 | 6.92 | 10.03 | 1.17 | 1.12 |
Net Debt/EBITDA |
1.44 | 2.27 | 1.03 | 1.56 | 1.05 | 1.28 | 0.97 | 1.70 | 0.11 | 0.08 |
Debt/Assets |
0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 2.26% | 3.82% | 0.49% | 4.69% | 8.24% |
Debt/Equity |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.05 | 0.01 | 0.08 | 0.16 |
Asset Turnover |
0.37 | 0.30 | 0.26 | 0.04 | 0.06 | 0.00 | 0.00 | 0.05 | 0.13 | 0.07 |
Operating CF/Net income |
0.86 | 0.83 | 0.62 | 0.87 | 0.85 | 0.87 | 0.81 | 0.88 | 0.85 | 0.78 |
Capex/Depreciation |
(0.36) | (0.75) | (0.45) | (0.40) | (0.23) | (0.92) | (1.74) | (1.85) | (1.42) | (5.07) |
| (47.19%) | (55.91%) | (70.46%) | (64.57%) | (88.55%) | (73.36%) | (64.89%) | (98.24%) | (414.03%) | (150.76%) | |
| (38.62%) | (44.34%) | (56.02%) | (56.76%) | (77.05%) | (62.40%) | (57.33%) | (83.34%) | (229.19%) | (120.87%) | |
ROIC |
(1,184.48%) | 0.00% | 0.00% | (772.35%) | (754.17%) | (447.57%) | (491.24%) | (530.31%) | (439.86%) | (523.40%) |
Return on Tangible Assets |
(62.19%) | (40.61%) | (114.71%) | (64.19%) | (100.87%) | (78.86%) | (101.56%) | (62.37%) | (1,272.01%) | (1,311.38%) |
Average Days of Receivables |
94.84 | 16.75 | 43.59 | 77.10 | 19.84 | 0.00 | 0.00 | 26.86 | 124.37 | 60.54 |
Research and Development Expense of Revenue |
27.17% | 40.91% | 30.75% | 135.03% | 441.52% | 0.00% | 0.00% | 764.53% | 872.59% | 777.94% |
Selling, General and Administrative Expense of Revenue |
127.49% | 170.61% | 252.14% | 1,531.55% | 825.86% | 0.00% | 0.00% | 1,060.75% | 955.56% | 1,048.31% |
Intangible Assets out of Total Assets |
0.06 | 0.05 | 0.11 | 0.07 | 0.09 | 0.12 | 0.12 | 0.09 | 0.45 | 0.40 |
Share Based Compensation of Revenue |
17.06% | 14.68% | 25.55% | 99.73% | 112.03% | 0.00% | 0.00% | 42.26% | 68.33% | 103.86% |
Graham Net Nets |
0.28 | 0.18 | 0.10 | 0.45 | 0.16 | — | — | 0.63 | 0.00 | 0.00 |
Graham Number |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 |
Earnings Yield |
(18.79%) | (7.64%) | (12.15%) | (30.19%) | (18.12%) | — | — | (42.16%) | (18.00%) | (25.29%) |
Free Cash Flow Yield |
(15.59%) | (6.51%) | (8.32%) | (27.32%) | (16.06%) | — | — | (38.12%) | (16.08%) | (22.13%) |
Revenue per Share |
0.94 | 0.73 | 0.62 | 0.11 | 0.19 | 0.00 | 0.00 | 0.23 | 0.35 | 0.48 |
Operating CF per Share |
(0.85) | (0.89) | (0.84) | (1.41) | (2.15) | (2.14) | (2.58) | (3.67) | (5.35) | (6.71) |
Capex per Share |
(0.02) | (0.04) | (0.05) | (0.04) | (0.07) | (0.07) | (0.16) | (0.22) | (0.27) | (0.82) |
Free Cash Flow per Share |
(0.87) | (0.94) | (0.89) | (1.45) | (2.22) | (2.21) | (2.74) | (3.89) | (5.63) | (7.52) |
Cash per Share |
1.65 | 2.87 | 1.48 | 2.56 | 2.44 | 3.17 | 3.20 | 6.94 | 0.81 | 0.97 |
Shareholders Equity per Share |
1.72 | 2.81 | 1.35 | 2.70 | 2.65 | 3.43 | 3.46 | 7.40 | 1.58 | 1.74 |
Interest Debt per Share |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Book value per Share |
1.72 | 2.81 | 1.35 | 2.70 | 2.65 | 3.43 | 3.46 | 7.40 | 1.58 | 1.74 |
Free Cash Flow |
(4.84) | (4.59) | (3.43) | (5.12) | (6.92) | (6.16) | (7.32) | (8.89) | (8.68) | (9.73) |
Working Capital |
8.64 | 12.81 | 4.25 | 8.59 | 7.29 | 8.30 | 7.68 | 14.77 | 0.26 | 0.21 |
Capital Expenditures |
(0.10) | (0.22) | (0.19) | (0.12) | (0.21) | (0.19) | (0.42) | (0.50) | (0.42) | (1.05) |
Net Current Asset Value |
8.58 | 12.70 | 4.08 | 8.36 | 6.94 | 7.80 | 7.27 | 14.68 | 0.07 | (0.14) |
EV/EBIT |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 |
Capex to Sales |
0.02 | 0.06 | 0.08 | 0.33 | 0.35 | 0.00 | 0.00 | 0.95 | 0.78 | 1.70 |
Price to Operating Income |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 |
| Other line items | ||||||||||
Depreciation/Fixed assets |
1.44 | 1.23 | 1.59 | 0.81 | 1.76 | 0.49 | 0.36 | 0.59 | 0.60 | 0.32 |
Cash ROIC |
(25.86%) | (16.51%) | (31.52%) | (27.50%) | (43.55%) | (33.08%) | (40.23%) | (27.03%) | (224.03%) | (252.23%) |
Accounts Receivable Turnover |
6.86 | 15.91 | 13.13 | 6.68 | 9.71 | 0.00 | 0.00 | 4.75 | 3.76 | 4.33 |
Accounts Payable Turnover |
2.66 | 3.12 | 4.79 | 0.99 | 3.21 | 0.44 | 0.00 | 0.46 | 0.50 | 0.78 |
Inventory Turnover |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Average Days of Payables |
157.50 | 179.70 | 84.23 | 418.76 | 77.20 | 569.09 | 308,425.00 | 923.19 | 737.68 | 568.20 |
Days of Inventory on Hand |
0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Average Receivables |
0.76 | 0.23 | 0.18 | 0.06 | 0.06 | 0.07 | 0.04 | 0.11 | 0.14 | 0.14 |
Average Payables |
1.43 | 0.79 | 0.33 | 0.26 | 0.33 | 0.64 | 0.96 | 0.92 | 0.76 | 0.63 |
Average Assets |
14.23 | 11.95 | 9.27 | 10.14 | 10.24 | 11.03 | 14.79 | 11.40 | 4.22 | 9.24 |
Average Common Equity |
11.65 | 9.48 | 7.37 | 8.92 | 8.91 | 9.38 | 13.07 | 9.67 | 2.34 | 7.41 |
Columns are period end dates