ESS Tech, Inc.
For the period ended Sep 30, 2025. Filed Nov 13, 2025.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Sep 30, 2025 · Filed Nov 13, 2025
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Extracted filing text, with the paragraph anchors used by the comparison.
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Condensed Statements of Stockholders' (Deficit) Equity
(in thousands, except share data)
| Common Stock · Additional Paid-InCapital · AccumulatedDeficit · Total Stockholders’(Deficit) Equity | |||||
|---|---|---|---|---|---|
| Shares · Amount | |||||
| Balance as of December 31, 2023 | 11,614,127 | $1 | $799,513 | $(696,157) | $103,357 |
| Issuance of common stock under stock-based compensation plans, net of stock withheld for taxes | 45,745 | — | (81) | — | (81) |
| Stock-based compensation expense | — | — | 2,854 | — | 2,854 |
| Net loss | — | — | — | (18,310) | (18,310) |
| Balance as of March 31, 2024 | 11,659,872 | $1 | $802,286 | $(714,467) | $87,820 |
| Issuance of common stock under stock-based compensation plans, net of stock withheld for taxes | 128,263 | — | 138 | — | 138 |
| Stock-based compensation expense | — | — | 3,026 | — | 3,026 |
| Net loss | — | — | — | (21,940) | (21,940) |
| Balance as of June 30, 2024 | 11,788,135 | $1 | $805,450 | $(736,407) | $69,044 |
| Issuance of common stock under stock-based compensation plans, net of stock withheld for taxes | 94,446 | — | (8) | — | (8) |
| Stock-based compensation expense | — | — | 2,658 | — | 2,658 |
| Net loss | — | — | — | (22,493) | (22,493) |
| Balance as of September 30, 2024 | 11,882,581 | $1 | $808,100 | $(758,900) | $49,201 |
| Balance as of December 31, 2024 | 11,986,516 | $1 | $811,262 | $(782,379) | $28,884 |
| Issuance of common stock under stock-based compensation plans, net of stock withheld for taxes | 117,234 | — | (13) | — | (13) |
| Stock-based compensation expense | — | — | 1,234 | — | 1,234 |
| Net loss | — | — | — | (18,026) | (18,026) |
| Balance as of March 31, 2025 | 12,103,750 | $1 | $812,483 | $(800,405) | $12,079 |
| Issuance of common stock under the ATM, net of commission fees | 616,264 | — | 721 | — | 721 |
| Issuance of common stock under stock-based compensation plans, net of stock withheld for taxes | 176,132 | — | 95 | — | 95 |
| Stock-based compensation expense | — | — | 1,465 | — | 1,465 |
| Net loss | — | — | — | (11,056) | (11,056) |
| Balance as of June 30, 2025 | 12,896,146 | $1 | $814,764 | $(811,461) | $3,304 |
| Issuance of common stock under the SEPA | 2,402,708 | 1 | 3,954 | — | 3,955 |
| Issuance of common stock under stock-based compensation plans, net of stock withheld for taxes | 92,030 | — | (9) | — | (9) |
| Issuance of common stock warrants | — | — | 112 | — | 112 |
| Stock-based compensation expense | — | — | 1,246 | — | 1,246 |
| Net loss | — | — | — | (10,375) | (10,375) |
| Balance as of September 30, 2025 | 15,390,884 | $2 | $820,067 | $(821,836) | $(1,767) |
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