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

Rhea-AI Filing Summary

Edgar R. Giesinger Jr., a director of Solaris Energy Infrastructure, Inc., reported two trades in Class A common stock. On 08/23/2025 he was granted 6,052 restricted shares under the company’s Long Term Incentive Plan; those restricted shares vest in full on the first anniversary of the grant date. Two days later, on 08/25/2025, the reporting person sold 10,000 shares at a weighted-average price of $28.86 per share (sales occurred at prices ranging from $28.67 to $29.19). Following the transactions the filing shows the reporting person beneficially owned 90,956 shares. The Form 4 was signed by an attorney-in-fact on 08/26/2025 and includes a statement that the reporting person will provide detailed per-trade pricing on request.

Positive

• 6,052 restricted shares granted under the Long Term Incentive Plan that vest in full one year after grant, aligning director incentives with shareholders
• Full disclosure of sale pricing range and an offer to provide per‑trade details on request, supporting transparency

Negative

• 10,000 shares sold on 08/25/2025, reducing beneficial ownership to 90,956 shares
• No indication in the filing that the sale was made pursuant to a 10b5‑1 plan (the 10b5‑1 box is not checked)

Insights

Financial Analyst

TL;DR: Director received time‑based equity and completed a small open‑market sale, resulting in modest net reduction in holdings.

The grant of 6,052 restricted shares aligns the director’s compensation with shareholder value over the next year because the award vests in full on the first anniversary. The subsequent sale of 10,000 shares at a weighted average of $28.86 reduced beneficial holdings to 90,956 shares. The transactions are routine: an award under the LTIP and an open‑market disposition with disclosed price range. No derivative transactions or other material changes were reported.

Corporate Governance Expert

TL;DR: Governance signals are standard: time‑based equity grant plus an opportunistic share sale; disclosures appear complete.

The Form 4 discloses the nature of the restricted stock award and the vesting schedule, meeting typical transparency expectations. The sale was reported with a weighted average price and a footnote offering full per‑trade pricing upon request, which supports compliance. There is no indication of transactions under a 10b5‑1 plan or other contingent arrangements in the filing.

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^*

Giesinger Edgar R. JR.

(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)
08/23/2025

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	08/23/2025		A		6,052(1)	A	$0	100,956(2)	D
Class A Common Stock	08/25/2025		S		10,000	D	$28.86(3)	90,956(2)	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. Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

2. Includes 6,052 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

3. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $28.67 to $29.19 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.

	/s/ Christopher M. Powell, Attorney-in-Fact	08/26/2025
	** 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

Who filed the Form 4 for Solaris Energy Infrastructure, Inc. (SEI)?

The Form 4 was filed on behalf of Edgar R. Giesinger Jr., a director, and signed by an attorney‑in‑fact on 08/26/2025.

How many restricted shares were granted to the reporting person and when do they vest?

The reporting person was granted 6,052 restricted shares on 08/23/2025 that vest in full on the first anniversary of the grant.

How many shares were sold and at what price?

On 08/25/2025 the reporting person sold 10,000 shares at a weighted‑average price of $28.86 per share; reported trade prices ranged from $28.67 to $29.19.

What is the reporting person’s beneficial ownership after these transactions?

Following the reported transactions the filing shows the reporting person beneficially owned 90,956 shares of Class A common stock.

Did the Form 4 report any derivative transactions or 10b5‑1 plan sales?

No derivative securities were reported in Table II, and the filing does not indicate the sale was made pursuant to a 10b5‑1 plan.