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Solid Power, Inc. Form 4 Filings

SLDP NASDAQ

Every Form 4 that Solid Power, Inc. (SLDP) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.

A Form 4 covers the transactions officers, directors and large holders report, so if you follow SLDP and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SLDP filings page.

Rhea-AI Summary

Solid Power, Inc. President & CEO John C. Van Scoter reported a routine tax-related share disposition. On this Form 4, 154,512 shares of common stock were withheld at $2.60 per share to cover his tax obligation upon vesting of restricted stock units, as noted in the footnote. After this withholding, he directly holds 4,717,639 shares of common stock.

Rhea-AI Summary

Solid Power, Inc. reported that CFO, Treasurer, & Secretary Linda C. Heller had 72,310 shares of common stock withheld at $2.60 per share to cover taxes on vesting restricted stock units. This tax-withholding disposition is not an open-market sale. She now directly holds 1,948,844 shares of common stock.

Rhea-AI Summary

Solid Power, Inc. Chief Technology Officer Joshua Buettner-Garrett reported a tax-related share disposition. A total of 33,824 shares of common stock were withheld on June 30, 2026 to cover his tax obligations when restricted stock units vested. Following this withholding, he directly holds 1,366,018 shares of Solid Power common stock.

Rhea-AI Summary

Goldberg Steven H reported acquisition or exercise transactions in this Form 4 filing.

Solid Power, Inc. director Steven H. Goldberg received an award of 44,133 stock units of common stock on May 20, 2026. These units were granted at no cash cost and increase his direct holdings to 162,941 shares and units after the transaction.

The stock units each represent the right to receive one share of common stock upon vesting. They vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholder meeting, as long as Goldberg continues as a service provider. He has elected to defer settlement under the company’s Directors' Deferred Equity Compensation Plan.

Rhea-AI Summary

Wright MaryAnn reported acquisition or exercise transactions in this Form 4 filing.

Solid Power, Inc. director MaryAnn Wright reported receiving a grant of 44,133 restricted stock units (RSUs), each representing one share of common stock when vested. These RSUs vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholder meeting, provided she continues as a service provider. Following this award, Wright’s direct holdings total 331,730 shares of common stock.

Rhea-AI Summary

STEPHENS JOHN JOSEPH reported acquisition or exercise transactions in this Form 4 filing.

Solid Power, Inc. director John Joseph Stephens reported an equity award of 44,133 shares of common stock in the form of restricted stock units (RSUs). The RSUs carry a grant price of $0.00 per share and increase his directly held position to 320,203 shares of common stock.

Each RSU represents the right to receive one share of Solid Power common stock upon vesting. The units vest on the earlier of the first anniversary of the grant date or the day before the company’s next annual meeting of stockholders, provided he continues as a service provider under the 2021 Equity Incentive Plan.

Rhea-AI Summary

Solid Power, Inc. director Lesa B. Roe reported both a sale of shares and an equity grant. Roe sold 39,207 shares of common stock at $2.66 per share in an open-market transaction, executed under a Rule 10b5-1 trading plan designed to cover tax liabilities from vesting restricted stock units.

On the same date, Roe received a grant of 44,133 restricted stock units, each representing one share of common stock upon vesting. After these transactions, Roe directly held 243,975 shares. The restricted stock units vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholder meeting, subject to continued service.

Rhea-AI Summary

Solid Power, Inc. director Aleksandra A. Miziolek received an award of 44,133 restricted stock units of common stock. These units were granted at no cash cost per share and will each convert into one share of common stock when they vest.

The restricted stock units vest on the earlier of the first anniversary of the grant date or the day before Solid Power, Inc.’s next annual meeting of stockholders, provided she continues as a service provider under the company’s 2021 Equity Incentive Plan through that date. After this grant, she holds 341,062 shares of common stock directly.

Rhea-AI Summary

Solid Power, Inc. director Susan M. Kreh received a grant of 44,133 restricted stock units of common stock on May 20, 2026. These units carry no purchase price and each unit will convert into one share of common stock when it vests.

The restricted stock units vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholder meeting, provided she continues as a service provider under the company’s 2021 Equity Incentive Plan. Following this equity award, she directly holds 351,621 shares of common stock.

Rhea-AI Summary

Goldberg Steven H reported acquisition or exercise transactions in this Form 4 filing.

Solid Power, Inc. director Steven H. Goldberg received a grant of 44,133 restricted stock units, each representing one share of common stock at no cost. These units vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders’ meeting, subject to continued service. After this award, he holds 162,941 shares directly.

Rhea-AI Summary

Solid Power, Inc. director Awada Kaled reported an equity award of 44,133 shares of common stock in the form of restricted stock units on May 20, 2026. The units were granted at $0.00 per share as compensation, not as an open-market purchase.

The restricted stock units each convert into one share of common stock upon vesting. They vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholder meeting, if Kaled continues as a service provider under the 2021 Equity Incentive Plan. Following this grant, Kaled’s directly held and reported position is 351,621 shares.

Rhea-AI Summary

ANDERSON ERIK J reported acquisition or exercise transactions in this Form 4 filing.

Solid Power, Inc. director Erik J. Anderson reported an equity compensation grant in the form of restricted stock units. He received 44,133 RSUs, each representing one share of common stock at a grant price of $0.00 per share. These RSUs vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholder meeting, subject to his continued service. After this award, he holds 304,503 shares directly and 157,617 shares indirectly through WestRiver Management, LLC.

Rhea-AI Summary

Solid Power, Inc. Chief Technology Officer Joshua Buettner-Garrett reported a routine tax-related share disposition. On the vesting of restricted stock units, 5,519 shares of common stock were withheld at $3.15 per share to satisfy his tax obligation.

After this withholding, he directly holds 1,399,842 shares of Solid Power common stock. This was not an open-market sale but an automatic mechanism tied to equity compensation vesting.

Rhea-AI Summary

Solid Power, Inc. President and CEO John C. Van Scoter reported a routine tax-related share disposition. On the vesting of restricted stock units, 308,010 shares of common stock were withheld to cover his tax obligation at $3.075 per share. Following this non-market transaction, he directly holds 4,872,151 shares of Solid Power common stock.

Rhea-AI Summary

Solid Power, Inc. reported that CFO, Treasurer, & Secretary Linda C. Heller had 136,122 shares of common stock withheld on May 11, 2026 to cover tax obligations arising from the vesting of restricted stock units. After this tax-withholding disposition, she directly holds 2,021,154 shares of common stock.

Rhea-AI Summary

Solid Power, Inc. Chief Technology Officer Joshua Buettner-Garrett reported a tax-related share disposition tied to equity compensation. On May 11, 2026, 58,082 shares of common stock were withheld at $3.075 per share to satisfy his tax obligation upon vesting of restricted stock units. After this withholding, he directly holds 1,405,361 shares of Solid Power common stock. This event reflects routine tax withholding and is not an open-market stock sale.

Rhea-AI Summary

Solid Power, Inc. President & CEO John C. Van Scoter reported equity compensation and related tax withholding. He received a grant of 1,267,828 restricted stock units, each representing one share of common stock, which will vest in 16 equal quarterly installments starting on June 30, 2026, subject to continued service. Separately, 42,842 shares of common stock were withheld at $2.82 per share to cover tax obligations upon RSU vesting. Following these transactions, he holds 5,180,161 common shares directly.

Rhea-AI Summary

Solid Power, Inc. reported that Chief Technology Officer Joshua Buettner-Garrett received a grant of 183,518 shares of common stock on April 1, 2026 at no cost, representing restricted stock units where each unit equals one share. These units vest in 16 equal quarterly installments beginning June 30, 2026, subject to his continued service. On March 31, 2026, 14,284 shares were withheld at $2.82 per share to cover his tax obligation upon vesting of restricted stock units. Following these transactions, he holds 1,279,925 shares of common stock directly.

Rhea-AI Summary

Solid Power, Inc. director Erik J. Anderson reported selling 30,000 shares of common stock on December 4, 2025 at a price of $5.2024 per share. The transaction was coded as a sale and disclosed on a Form 4 filed for one reporting person.

Following this transaction, he reports beneficial ownership of 157,617 shares held indirectly through WestRiver Management, LLC and 260,370 shares held directly. Anderson is identified as the sole member and sole manager of WestRiver Management, LLC, which explains the indirect ownership reported.

Rhea-AI Summary

John C. Van Scoter, President & CEO and director of Solid Power, Inc. (SLDP), reported a transaction on 09/30/2025 in which 42,842 shares of the company's common stock were disposed of at a price of $3.52 per share. The filing indicates these shares were withheld to satisfy tax obligations upon the vesting of restricted stock units.

After the withholding, the reporting person beneficially owned 3,998,017 shares of common stock, held directly. The Form 4 was signed on behalf of Mr. Van Scoter by an attorney-in-fact on 10/01/2025.

Rhea-AI Summary

Solid Power, Inc. (SLDP) reporting person Joshua Buettner-Garrett, the company's Chief Technology Officer, disclosed a non-derivative disposition on 09/30/2025 where 14,284 shares of common stock were removed from his holdings at a price of $3.52 per share. The filing explains these shares were withheld to satisfy tax obligations upon RSU vesting. After the withholding, Mr. Buettner-Garrett beneficially owns 1,308,493 shares directly. The Form 4 was signed on behalf of the reporting person by an attorney-in-fact on 10/01/2025. The transaction is presented as routine compensation-related withholding rather than an active market sale.