Solid Power (NASDAQ: SLDP) CEO has 154,512 shares withheld for RSU taxes

Rhea-AI Filing 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.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Van Scoter John C.

Role President & CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	154,512	$2.60	$402K

Holdings After Transaction: Common Stock — 4,717,639 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 154,512 shares Withholding price per share: $2.60 per share Shares held after transaction: 4,717,639 shares +1 more

4 metrics

Shares withheld for taxes 154,512 shares Common stock withheld for tax obligation on RSU vesting

Withholding price per share $2.60 per share Value applied to shares withheld for tax obligation

Shares held after transaction 4,717,639 shares Direct common stock ownership after tax-withholding event

Transaction date 2026-06-30 Date of tax-withholding disposition of common stock

Key Terms

restricted stock units, tax obligation, Form 4, common stock

4 terms

restricted stock units financial

"upon the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax obligation financial

"withheld to satisfy the reporting person's tax obligation"

Form 4 regulatory

"On this Form 4, 154,512 shares of common stock were withheld"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

common stock financial

"Represents shares of the issuer's common stock withheld"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/01/2026 - 05:15 PM Accepted by SEC EDGAR 07/01/2026 - 05:15 PM Learn about SEC filing dates

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Van Scoter John C.

(Last) (First) (Middle)

486 S. PIERCE AVE., SUITE E

(Street)

LOUISVILLE COLORADO 80027

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Solid Power, Inc. [ SLDP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	06/30/2026		F		154,512(1)	D	$2.6	4,717,639	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 John C. Van Scoter	07/01/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Solid Power (SLDP) report in this Form 4?

Solid Power reported its President & CEO John C. Van Scoter had shares withheld for taxes. 154,512 common shares were retained by the company to satisfy his tax obligation when restricted stock units vested.

Did Solid Power (SLDP) CEO John Van Scoter sell shares in the open market?

No, the filing shows no open-market sale. The 154,512 shares were withheld by the company to pay taxes on vested restricted stock units, a non-market, administrative transaction rather than a discretionary sale.

How many Solid Power (SLDP) shares were used for the CEO’s tax withholding?

The filing reports 154,512 shares of Solid Power common stock were withheld. These shares covered John C. Van Scoter’s tax obligation that arose when his restricted stock units vested.

What price per share was applied to the Solid Power (SLDP) tax-withholding shares?

The transaction used a price of $2.60 per share. This value is shown in the Form 4 for the 154,512 common shares withheld to satisfy John C. Van Scoter’s tax liability on vested restricted stock units.

How many Solid Power (SLDP) shares does the CEO hold after this transaction?

After the tax-withholding disposition, John C. Van Scoter directly owns 4,717,639 Solid Power common shares. This post-transaction balance is reported in the Form 4’s ownership column following the withholding event.