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

Rhea-AI Filing Summary

Solaris Energy Infrastructure, Inc. (SEI) insider Ramachandran Kyle S., who serves as President and CFO, reported a purchase on 09/09/2025. He acquired 2,000 shares of Class A common stock at $25.00 per share. After the transaction the filing shows he beneficially owns 370,338 Class A shares (which include 158,808 restricted shares that remain subject to vesting), 489,511 Class B shares held directly, and 57,166 Class B shares held indirectly via a 401(k) plan. The filing also reports exchangeable Solaris LLC Units corresponding to 489,511 Class A shares (direct) and 57,166 Class A shares (indirect). The Form 4 was signed by an attorney-in-fact on 09/09/2025.

Insights

Securities Analyst

TL;DR: Insider purchase of 2,000 Class A shares at $25 increases the reporting person’s direct stake; holdings include significant restricted stock and exchangeable LLC units.

The reported open-market purchase on 09/09/2025 is a straightforward insider acquisition: 2,000 Class A shares at $25.00. Post-transaction beneficial ownership includes 370,338 Class A shares (158,808 of which are unvested restricted stock) and substantial Class B and exchangeable LLC unit positions. The mix of direct, indirect and restricted holdings indicates multi-layered ownership but the disclosed purchase size is small relative to total reported holdings. No dispositions, hedging instruments, or option exercises are reported.

Corporate Governance Expert

TL;DR: Filing documents a routine insider purchase by the President/CFO and clarifies the structure of his direct and indirect holdings.

The Form 4 clarifies ownership structure: direct Class A and Class B shares, restricted stock subject to vesting, and LLC units exchangeable for Class A shares. The indirect holdings via a 401(k) plan are properly disclosed. The filing is procedural and complies with Section 16 reporting requirements; it does not disclose material corporate actions or governance changes.

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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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^*

Ramachandran Kyle S.

(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)

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

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

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	09/09/2025		P		2,000	A	$25	370,338(1)	D
Class B Common Stock(2)								489,511	D
Class B Common Stock(2)								57,166	I	401(k) Plan

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	(3)							(3)	(3)	Class A Common Stock	489,511		489,511	D
Solaris Energy Infrastructure, LLC Units	(3)							(3)	(3)	Class A Common Stock	57,166		57,166	I	401 (k) Plan

Explanation of Responses:

1. Includes 158,808 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

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

3. Subject to the terms of the Solaris LLC Agreement, the Solaris LLC Units (together with a corresponding number of shares of Class B common stock) are exchangeable from time to time for shares of Class A common stock of the Issuer.

	/s/ Christopher M. Powell, Attorney-in-Fact	09/09/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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