SEI (SEI) Chief Accounting Officer sells 700 shares, holds 36,085

Rhea-AI Filing Summary

Solaris Energy Infrastructure, Inc. Chief Accounting Officer Christopher P. Wirtz reported an open-market sale of 700 shares of Class A common stock at $77.22 per share. After the sale, he directly owns 36,085 shares, including 17,791 restricted stock award shares that remain subject to vesting.

Insider Trade Summary

Net Seller: 700 shares ($54,054)

Net Sell 1 txn

Insider Wirtz Christopher P.

Role Chief Accounting Officer

Sold 700 shs ($54K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	700	$77.22	$54K

Holdings After Transaction: Class A Common Stock — 36,085 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 700 shares Sale price: $77.22 per share Shares owned after: 36,085 shares +1 more

4 metrics

Shares sold 700 shares Open-market sale of Class A Common Stock

Sale price $77.22 per share Price for the 700 sold shares

Shares owned after 36,085 shares Direct Class A holdings following the transaction

Unvested restricted shares 17,791 shares Restricted Stock Awards still subject to vesting

Key Terms

Class A Common Stock, open-market sale, Restricted Stock Awards, Form 4

4 terms

Class A Common Stock financial

"700 shares of Class A common stock were sold in the transaction."

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

open-market sale financial

"The transaction is described as an open-market sale of shares."

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Restricted Stock Awards financial

"Includes 17,791 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting."

Restricted stock awards are company shares given to employees or executives that cannot be sold or transferred until certain conditions — like staying with the company for a set time or meeting performance targets — are met, like a gift that is locked in a safe until rules are satisfied. Investors care because these awards tie management’s pay to company performance, can increase the number of shares outstanding when they become tradable (dilution), and may signal expected future selling pressure or commitment to long-term growth.

Form 4 regulatory

"This insider transaction is reported on Form 4, a statement of changes in beneficial ownership."

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.

Form 4 Insider Transactions: What Each Field Means →

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^*

Wirtz Christopher P.

(Last) (First) (Middle)

9651 KATY FREEWAY

SUITE 300

(Street)

HOUSTON TEXAS 77024

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Solaris Energy Infrastructure, Inc. [ SEI ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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
Class A Common Stock	05/13/2026		S		700	D	$77.22	36,085(1)	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. Includes 17,791 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

Remarks:

	/s/ Christopher M. Powell, Attorney-in-Fact	05/13/2026
	** 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 SEI’s Chief Accounting Officer report?

SEI’s Chief Accounting Officer Christopher P. Wirtz reported selling 700 shares of Class A common stock in an open-market transaction at $77.22 per share. This Form 4 shows a relatively small sale compared with his remaining direct holdings after the transaction.

How many SEI shares does Christopher P. Wirtz hold after this Form 4 sale?

After the sale, Christopher P. Wirtz directly holds 36,085 shares of SEI Class A common stock. This total includes both unrestricted shares and 17,791 shares from previously granted restricted stock awards that are still subject to vesting conditions over time.

What price did SEI’s Chief Accounting Officer receive for the sold shares?

Christopher P. Wirtz sold 700 shares of SEI Class A common stock at an average price of $77.22 per share. This reflects an open-market sale, as indicated by the transaction code and description in the Form 4 insider trading report.

Are any of Christopher P. Wirtz’s remaining SEI shares subject to vesting?

Yes. Of the 36,085 SEI shares that Christopher P. Wirtz holds after the sale, 17,791 shares come from previously granted restricted stock awards. These restricted shares remain subject to vesting requirements, meaning they become fully owned only as conditions are met.

Was this SEI insider transaction a purchase or a sale?

This SEI insider transaction was a sale. The Form 4 shows an open-market sale of 700 shares of Class A common stock by Chief Accounting Officer Christopher P. Wirtz, with the transaction coded as “S” for sale and described as an open-market transaction.