STOCK TITAN

[Form 4] Solid Power, Inc. Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Negative)
Form Type
4

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.

Solid Power, Inc. (SLDP) la persona segnalante, Joshua Buettner-Garrett, Chief Technology Officer dell'azienda, ha comunicato una disposizione non derivativa il 30/09/2025 in cui 14.284 azioni di azioni comuni sono state rimosse dalle sue partecipazioni al prezzo di $3,52 per azione. L'annuncio spiega che queste azioni sono state ritenute per soddisfare obblighi fiscali al vesting degli RSU. Dopo la trattenuta, il signor Buettner-Garrett detiene direttamente 1.308.493 azioni in modo vantaggioso. Il Form 4 è stato firmato per conto della persona segnalante da un procuratore-in-fatto il 01/10/2025. La transazione è presentata come trattenuta ordinaria legata al compenso piuttosto che come una vendita attiva sul mercato.

Solid Power, Inc. (SLDP) la persona reportante Joshua Buettner-Garrett, director de Tecnología de la empresa, divulgó una disposición no derivativa el 30/09/2025 en la que 14.284 acciones de acciones comunes fueron retiradas de sus participaciones a un precio de $3,52 por acción. La presentación explica que estas acciones fueron retenidas para satisfacer obligaciones fiscales al vesting de RSU. Después de la retención, el Sr. Buettner-Garrett posee de forma beneficiosa directamente 1.308.493 acciones. El Formulario 4 fue firmado en nombre de la persona reportante por un apoderado el 01/10/2025. La transacción se presenta como una retención ordinaria relacionada con la compensación, y no como una venta activa en el mercado.

Solid Power, Inc. (SLDP) 보고자 Joshua Buettner-Garrett는 회사의 최고기술책임자(CTO)로서 2025년 9월 30일 비파생적 처분을 공개했으며, 14,284주의 보통주가 주당 $3.52의 가격으로 보유지분에서 제거되었습니다. 해당 공시는 이 주식이 RSU vesting 시기에 따른 세무 의무를 충당하기 위해 보류되었다고 설명합니다. 보류 후, 부스(Buettner-Garrett)씨는 직접적으로 1,308,493주를 유익하게 보유합니다. Form 4는 보고자 대리인에 의해 2025년 10월 1일 서명되었습니다. 이 거래는 적극적 시장 매도가 아닌 보상 관련 일반 보류로 제시됩니다.

Solid Power, Inc. (SLDP) la personne déclarante, Joshua Buettner-Garrett, directeur technique de l'entreprise, a annoncé une cession non dérivée le 30/09/2025, au cours de laquelle 14 284 actions ordinaires ont été retirées de ses participations au prix de $3,52 par action. Le dossier explique que ces actions ont été retenues pour satisfaire les obligations fiscales lors du vesting des RSU. Après la retenue, M. Buettner-Garrett détient directement 1 308 493 actions de manière bénéficiaire. Le Form 4 a été signé au nom de la personne déclarante par un mandataire le 01/10/2025. L'opération est présentée comme une retenue liée à la rémunération courante, plutôt qu'à une vente active sur le marché.

Solid Power, Inc. (SLDP) meldende Person Joshua Buettner-Garrett, der Chief Technology Officer des Unternehmens, gab am 30.09.2025 eine nicht derivativ disposition bekannt, bei der 14.284 Aktien Stammaktien zu einem Kurs von $3,52 pro Aktie aus seinen Beständen entfernt wurden. Die Einreichung erklärt, dass diese Aktien einbehalten wurden, um Steuerschulden bei RSU-Vesting zu befriedigen. Nach der Einbehaltung besitzt Herr Buettner-Garrett direkt nutzbringend 1.308.493 Aktien. Das Form 4 wurde im Namen der meldenden Person von einem Bevollmächtigten am 01.10.2025 unterzeichnet. Die Transaktion wird als routinemäßige, mit Vergütung verbundene Ausschüttung/Einbehaltung dargestellt statt als aktiver Marktverkauf.

Solid Power, Inc. (SLDP) الشخص المبلّغ Joshua Buettner-Garrett، رئيس قسم التقنية في الشركة، كشف عن تصرف غير مشتق في 30/09/2025 حيث تم سحب 14,284 سهماً من الأسهم العادية من ملكيته بسعر $3.52 للسهم. يوضح الملف أن هذه الأسهم كانت محتجزة لتسوية الالتزامات الضريبية عند vesting RSU. بعد الاحتجاز، يملك السيد Buettner-Garrett بشكل مستفيد مباشرة 1,308,493 سهماً. تم توقيع النموذج 4 نيابة عن الشخص المبلّغ بواسطة وكيل مفوَّض في 01/10/2025. يتم تقديم المعاملة كاحتجاز عادي متعلق بالتعويض وليس كمبيعات سوق نشطة.

Solid Power, Inc. (SLDP) 报告人 Joshua Buettner-Garrett,该公司首席技术官,披露了 2025/09/30 的非衍生性处置,其中 14,284 股普通股以每股 $3.52 美元的价格从其持有中移除。该 filing 解释这些股票是 在 RSU 归属时用于清偿税务义务而被扣留。扣留后,Buettner-Garrett 先生直接受益持有 1,308,493 股。Form 4 已由代表报告人的代理人于 2025/10/01 签署。该交易被列示为与薪酬相关的日常扣留,而非主动市场销售。

Positive
  • Disclosure is compliant: Form 4 filed and signed, showing adherence to insider reporting rules
  • Substantial retained ownership: Reporting person continues to hold 1,308,493 shares, maintaining alignment with shareholders
Negative
  • Shares disposed (withheld): 14,284 shares withheld to satisfy tax obligations upon RSU vesting

Insights

TL;DR: Small, routine RSU tax withholding; ownership remains substantial at 1.308M shares.

The reported disposition of 14,284 shares at $3.52 reflects tax withholding tied to vested restricted stock units, not a discretionary cash-sale by the officer. With 1,308,493 shares remaining, the reporting person retains a material equity stake that continues to align his interests with shareholders. The transaction should have limited market impact given its size relative to total holdings and its administrative nature.

TL;DR: Compliance filing demonstrates routine insider reporting and standard tax-withholding practice.

The Form 4 properly discloses the removal of shares to cover tax liabilities from RSU vesting and lists the reporting persons role as Chief Technology Officer. Signature by an attorney-in-fact indicates authorized filing. This is a routine governance event showing compliance with Section 16 reporting obligations; it does not signal a change in control or a shift in executive incentive alignment.

Solid Power, Inc. (SLDP) la persona segnalante, Joshua Buettner-Garrett, Chief Technology Officer dell'azienda, ha comunicato una disposizione non derivativa il 30/09/2025 in cui 14.284 azioni di azioni comuni sono state rimosse dalle sue partecipazioni al prezzo di $3,52 per azione. L'annuncio spiega che queste azioni sono state ritenute per soddisfare obblighi fiscali al vesting degli RSU. Dopo la trattenuta, il signor Buettner-Garrett detiene direttamente 1.308.493 azioni in modo vantaggioso. Il Form 4 è stato firmato per conto della persona segnalante da un procuratore-in-fatto il 01/10/2025. La transazione è presentata come trattenuta ordinaria legata al compenso piuttosto che come una vendita attiva sul mercato.

Solid Power, Inc. (SLDP) la persona reportante Joshua Buettner-Garrett, director de Tecnología de la empresa, divulgó una disposición no derivativa el 30/09/2025 en la que 14.284 acciones de acciones comunes fueron retiradas de sus participaciones a un precio de $3,52 por acción. La presentación explica que estas acciones fueron retenidas para satisfacer obligaciones fiscales al vesting de RSU. Después de la retención, el Sr. Buettner-Garrett posee de forma beneficiosa directamente 1.308.493 acciones. El Formulario 4 fue firmado en nombre de la persona reportante por un apoderado el 01/10/2025. La transacción se presenta como una retención ordinaria relacionada con la compensación, y no como una venta activa en el mercado.

Solid Power, Inc. (SLDP) 보고자 Joshua Buettner-Garrett는 회사의 최고기술책임자(CTO)로서 2025년 9월 30일 비파생적 처분을 공개했으며, 14,284주의 보통주가 주당 $3.52의 가격으로 보유지분에서 제거되었습니다. 해당 공시는 이 주식이 RSU vesting 시기에 따른 세무 의무를 충당하기 위해 보류되었다고 설명합니다. 보류 후, 부스(Buettner-Garrett)씨는 직접적으로 1,308,493주를 유익하게 보유합니다. Form 4는 보고자 대리인에 의해 2025년 10월 1일 서명되었습니다. 이 거래는 적극적 시장 매도가 아닌 보상 관련 일반 보류로 제시됩니다.

Solid Power, Inc. (SLDP) la personne déclarante, Joshua Buettner-Garrett, directeur technique de l'entreprise, a annoncé une cession non dérivée le 30/09/2025, au cours de laquelle 14 284 actions ordinaires ont été retirées de ses participations au prix de $3,52 par action. Le dossier explique que ces actions ont été retenues pour satisfaire les obligations fiscales lors du vesting des RSU. Après la retenue, M. Buettner-Garrett détient directement 1 308 493 actions de manière bénéficiaire. Le Form 4 a été signé au nom de la personne déclarante par un mandataire le 01/10/2025. L'opération est présentée comme une retenue liée à la rémunération courante, plutôt qu'à une vente active sur le marché.

Solid Power, Inc. (SLDP) meldende Person Joshua Buettner-Garrett, der Chief Technology Officer des Unternehmens, gab am 30.09.2025 eine nicht derivativ disposition bekannt, bei der 14.284 Aktien Stammaktien zu einem Kurs von $3,52 pro Aktie aus seinen Beständen entfernt wurden. Die Einreichung erklärt, dass diese Aktien einbehalten wurden, um Steuerschulden bei RSU-Vesting zu befriedigen. Nach der Einbehaltung besitzt Herr Buettner-Garrett direkt nutzbringend 1.308.493 Aktien. Das Form 4 wurde im Namen der meldenden Person von einem Bevollmächtigten am 01.10.2025 unterzeichnet. Die Transaktion wird als routinemäßige, mit Vergütung verbundene Ausschüttung/Einbehaltung dargestellt statt als aktiver Marktverkauf.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Buettner-Garrett Joshua

(Last) (First) (Middle)
C/O SOLID POWER, INC.
486 S PIERCE AVE., SUITE E

(Street)
LOUISVILLE CO 80027

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Solid Power, Inc. [ SLDP ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Technology Officer
3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 09/30/2025 F 14,284(1) D $3.52 1,308,493 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Represents shares of the issuer's common stock withheld to satisfy the reporting person's tax obligation upon the vesting of restricted stock units.
/s/ Kristen Gould, attorney-in-fact on behalf of Joshua Buettner-Garrett 10/01/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did Joshua Buettner-Garrett report on Form 4 for SLDP?

He reported a disposition of 14,284 shares on 09/30/2025, recorded at a price of $3.52 per share.

Why were the 14,284 shares disposed according to the filing?

The filing states the shares were withheld to satisfy tax obligations upon the vesting of restricted stock units.

How many SLDP shares does the reporting person own after the transaction?

After the reported transaction he beneficially owns 1,308,493 shares (direct ownership).

What is the reporting person's role at Solid Power?

The reporting person is listed as the company's Chief Technology Officer.

When was the Form 4 signed and by whom?

The form was signed on behalf of Joshua Buettner-Garrett by an attorney-in-fact, /s/ Kristen Gould, on 10/01/2025.
Solid Pwr Inc

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