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Friday 6 November 2026
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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.
- Revenue
- +321.1%
- EPS
- +26.7%
- Free cash flow
- −137.5%
Quarter to June 2026, against a year earlier
2.36
0.05
+2.16%
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| Dec '16 | Dec '17 | Dec '18 | Dec '19 | Dec '20 | Dec '21 | Dec '22 | Dec '23 | Dec '24 | Dec '25 | |
|---|---|---|---|---|---|---|---|---|---|---|
Piotroski F-Score |
— | 4 | 4 | — | — | — | — | 5 | 5 | 4 |
P/E ratio |
0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
P/S ratio |
57.54 | 46.49 | 16.29 | — | — | 37.91 | 30.31 | 17.14 | 19.60 | 5.90 |
Altman Z-Score |
(8.68) | (5.06) | 2.91 | — | — | 9.68 | (3.94) | (8.26) | 8.12 | (5.55) |
P/FCF ratio |
0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Altman Z″-Score (non-manufacturers) |
(46.77) | (52.98) | 1.61 | — | — | (21.51) | (17.72) | (39.46) | (11.60) | (23.22) |
Beneish M-Score |
— | (3.30) | (3.30) | — | — | — | (2.56) | 0.42 | (2.80) | 1.98 |
P/Operating CF |
(19.49) | (24.74) | (11.31) | — | — | (36.99) | (25.73) | (28.41) | (169.82) | (24.06) |
P/B ratio |
19.59 | 22.19 | 1.38 | — | — | 5.20 | 1.96 | 7.93 | 5.12 | 3.24 |
Price to Tangible BV |
86.36 | 93.70 | 1.54 | — | — | 5.76 | 2.14 | 9.46 | 5.45 | 3.52 |
EV/Sales |
56.35 | 45.58 | 5.26 | — | — | 31.44 | 16.06 | 14.88 | 15.76 | 4.19 |
EV/EBITDA |
0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
EV/Operating CF |
(4.96) | (6.41) | (0.90) | — | — | (5.33) | (1.99) | (11.06) | (12.96) | (4.63) |
EV/FCF |
(4.43) | (6.10) | (0.85) | — | — | (5.17) | (1.94) | (10.43) | (12.35) | (4.53) |
Quick Ratio |
0.81 | 0.93 | 9.72 | 6.62 | 8.26 | 10.45 | 7.97 | 2.65 | 5.90 | 4.08 |
Current Ratio |
1.12 | 1.17 | 10.03 | 6.92 | 8.69 | 10.98 | 8.49 | 2.89 | 6.32 | 4.34 |
Net Debt/EBITDA |
0.08 | 0.11 | 1.70 | 0.97 | 1.28 | 1.05 | 1.56 | 1.03 | 2.27 | 1.44 |
Debt/Assets |
8.24% | 4.69% | 0.49% | 3.82% | 2.26% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Debt/Equity |
0.16 | 0.08 | 0.01 | 0.05 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Asset Turnover |
0.07 | 0.13 | 0.05 | 0.00 | 0.00 | 0.06 | 0.04 | 0.26 | 0.30 | 0.37 |
Operating CF/Net income |
0.78 | 0.85 | 0.88 | 0.81 | 0.87 | 0.85 | 0.87 | 0.62 | 0.83 | 0.86 |
Capex/Depreciation |
(5.07) | (1.42) | (1.85) | (1.74) | (0.92) | (0.23) | (0.40) | (0.45) | (0.75) | (0.36) |
| (150.76%) | (414.03%) | (98.24%) | (64.89%) | (73.36%) | (88.55%) | (64.57%) | (70.46%) | (55.91%) | (47.19%) | |
| (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%) |
Return on Tangible Assets |
(1,311.38%) | (1,272.01%) | (62.37%) | (101.56%) | (78.86%) | (100.87%) | (64.19%) | (114.71%) | (40.61%) | (62.19%) |
Average Days of Receivables |
60.54 | 124.37 | 26.86 | 0.00 | 0.00 | 19.84 | 77.10 | 43.59 | 16.75 | 94.84 |
Research and Development Expense of Revenue |
777.94% | 872.59% | 764.53% | 0.00% | 0.00% | 441.52% | 135.03% | 30.75% | 40.91% | 27.17% |
Selling, General and Administrative Expense of Revenue |
1,048.31% | 955.56% | 1,060.75% | 0.00% | 0.00% | 825.86% | 1,531.55% | 252.14% | 170.61% | 127.49% |
Intangible Assets out of Total Assets |
0.40 | 0.45 | 0.09 | 0.12 | 0.12 | 0.09 | 0.07 | 0.11 | 0.05 | 0.06 |
Share Based Compensation of Revenue |
103.86% | 68.33% | 42.26% | 0.00% | 0.00% | 112.03% | 99.73% | 25.55% | 14.68% | 17.06% |
Graham Net Nets |
0.00 | 0.00 | 0.63 | — | — | 0.16 | 0.45 | 0.10 | 0.18 | 0.28 |
Graham Number |
0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Earnings Yield |
(25.29%) | (18.00%) | (42.16%) | — | — | (18.12%) | (30.19%) | (12.15%) | (7.99%) | (17.84%) |
Free Cash Flow Yield |
(22.13%) | (16.08%) | (38.12%) | — | — | (16.06%) | (27.32%) | (8.32%) | (6.51%) | (15.70%) |
Revenue per Share |
0.48 | 0.35 | 0.23 | 0.00 | 0.00 | 0.19 | 0.11 | 0.62 | 0.73 | 0.94 |
Operating CF per Share |
(6.71) | (5.35) | (3.67) | (2.58) | (2.14) | (2.15) | (1.41) | (0.84) | (0.89) | (0.85) |
Capex per Share |
(0.82) | (0.27) | (0.22) | (0.16) | (0.07) | (0.07) | (0.04) | (0.05) | (0.04) | (0.02) |
Free Cash Flow per Share |
(7.52) | (5.63) | (3.89) | (2.74) | (2.21) | (2.22) | (1.45) | (0.89) | (0.94) | (0.87) |
Cash per Share |
0.97 | 0.81 | 6.94 | 3.20 | 3.17 | 2.44 | 2.56 | 1.48 | 2.87 | 1.65 |
Shareholders Equity per Share |
1.74 | 1.58 | 7.40 | 3.46 | 3.43 | 2.65 | 2.70 | 1.35 | 2.81 | 1.72 |
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 |
1.74 | 1.58 | 7.40 | 3.46 | 3.43 | 2.65 | 2.70 | 1.35 | 2.81 | 1.72 |
Free Cash Flow |
(9.73) | (8.68) | (8.89) | (7.32) | (6.16) | (6.92) | (5.12) | (3.43) | (4.59) | (4.84) |
Working Capital |
0.21 | 0.26 | 14.77 | 7.68 | 8.30 | 7.29 | 8.59 | 4.25 | 12.81 | 8.64 |
Capital Expenditures |
(1.05) | (0.42) | (0.50) | (0.42) | (0.19) | (0.21) | (0.12) | (0.19) | (0.22) | (0.10) |
Net Current Asset Value |
(0.14) | 0.07 | 14.68 | 7.27 | 7.80 | 6.94 | 8.36 | 4.08 | 12.70 | 8.58 |
EV/EBIT |
0.00 | 0.00 | 0.00 | — | — | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
Capex to Sales |
1.70 | 0.78 | 0.95 | 0.00 | 0.00 | 0.35 | 0.33 | 0.08 | 0.06 | 0.02 |
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 |
0.32 | 0.60 | 0.59 | 0.36 | 0.49 | 1.76 | 0.81 | 1.59 | 1.23 | 1.44 |
Cash ROIC |
(252.23%) | (224.03%) | (27.03%) | (40.23%) | (33.08%) | (43.55%) | (27.50%) | (31.52%) | (16.51%) | (25.86%) |
Accounts Receivable Turnover |
4.33 | 3.76 | 4.75 | 0.00 | 0.00 | 9.71 | 6.68 | 13.13 | 15.91 | 6.86 |
Accounts Payable Turnover |
0.78 | 0.50 | 0.46 | 0.00 | 0.44 | 3.21 | 0.99 | 4.79 | 3.12 | 2.66 |
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 |
568.20 | 737.68 | 923.19 | 308,425.00 | 569.09 | 77.20 | 418.76 | 84.23 | 179.70 | 157.50 |
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 |
0.14 | 0.14 | 0.11 | 0.04 | 0.07 | 0.06 | 0.06 | 0.18 | 0.23 | 0.76 |
Average Payables |
0.63 | 0.76 | 0.92 | 0.96 | 0.64 | 0.33 | 0.26 | 0.33 | 0.79 | 1.43 |
Average Assets |
9.24 | 4.22 | 11.40 | 14.79 | 11.03 | 10.24 | 10.14 | 9.27 | 11.95 | 14.23 |
Average Common Equity |
7.41 | 2.34 | 9.67 | 13.07 | 9.38 | 8.91 | 8.92 | 7.37 | 9.48 | 11.65 |
Columns are period end dates · fundamentals updated 25 Oct 2026