[Form 4] Solaris Energy Infrastructure, Inc. Insider Trading Activity

Rhea-AI Filing Summary

James R. Burke, a director of Solaris Energy Infrastructure, Inc. (SEI), reported insider transactions dated 09/10/2025. He sold 5,000 shares of Class A common stock in multiple trades for a weighted average price of $29.22, leaving him with 16,973 Class A shares after the sale (which includes 5,696 restricted shares that remain subject to vesting). The filing also shows 800 Class A shares held indirectly by his spouse and 42,734 shares of Class B common stock disposed of, reported as direct holdings tied to Solaris Energy Infrastructure, LLC units that are exchangeable into Class A shares under the LLC agreement. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person.

Positive

• None.

Negative

• Insider sale: Reporting person sold 5,000 Class A shares at a weighted average price of $29.22 on 09/10/2025.

Insights

Financial Analyst

TL;DR Insider sold a small block of Class A shares; remaining holdings include vested, restricted, and indirect positions.

This is a routine Section 16 disclosure showing a 5,000-share sale at a weighted average of $29.22, reducing direct Class A ownership to 16,973 shares including 5,696 unvested restricted shares. The filing also documents 800 Class A shares held indirectly by a spouse and disposition of 42,734 Class B shares tied to LLC units that can convert to Class A shares. For investors, this clarifies current insider ownership composition but does not, by itself, provide operational or financial performance information.

Corporate Governance Expert

TL;DR Disclosure complies with Section 16 reporting; sale and LLC unit exchangeability are clearly documented.

The Form 4 identifies the reporting person as a director and discloses a sale executed on 09/10/2025 and related ownership balances. The filing includes required explanatory footnotes: the sale price is a weighted average across trades, restricted stock remains subject to vesting, and LLC units are exchangeable for Class A shares per the LLC agreement. The signature by an attorney-in-fact is properly indicated. The filing appears procedurally complete and transparent regarding the nature of holdings.

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

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OMB Number:			3235-0287
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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^*

BURKE JAMES R

(Last) (First) (Middle)

9651 KATY FREEWAY

SUITE 300

(Street)

HOUSTON TX 77024

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2025

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
Class A Common Stock	09/10/2025		S		5,000	D	$29.22(1)	16,973(2)	D
Class A Common Stock								800	I	Spouse
Class B Common Stock(3)								42,734	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
Solaris Energy Infrastructure, LLC Units	(4)							(4)	(4)	Class A Common Stock	42,734		42,734	D

Explanation of Responses:

1. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $29.19 to $29.29 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

2. Includes 5,696 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

3. Each share of Class B common stock has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

4. Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission on May 17, 2017, the units in Solaris LLC (together with a corresponding number of shares of Class B common stock of the Issuer) are exchangeable from time to time for shares of Class A common stock of the Issuer.

	/s/ Christopher M. Powell, Attorney-in-Fact	09/12/2025
	** 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 insider transaction did James R. Burke report on Form 4 for SEI?

He reported a sale of 5,000 Class A common shares on 09/10/2025 at a weighted average price of $29.22.

How many Class A shares does James R. Burke beneficially own after the reported sale?

The Form 4 shows he beneficially owns 16,973 Class A shares after the sale, which includes 5,696 restricted shares that remain subject to vesting.

What indirect and Class B holdings are disclosed for Burke in the filing?

The filing discloses 800 Class A shares held indirectly by his spouse and a reported disposition of 42,734 Class B shares tied to Solaris LLC units that are exchangeable for Class A shares.

When was the Form 4 signed and who signed it?

The Form 4 was signed by Christopher M. Powell, Attorney-in-Fact on 09/12/2025.