Director at Solaris Energy (SEI) sells 5,200 shares at $72.88

Rhea-AI Filing Summary

Solaris Energy Infrastructure, Inc. director Argo Laurie H reported an open-market sale of 5,200 shares of Class A common stock at $72.88 per share. After this transaction, the director holds 44,839 shares directly, including 6,275 shares from previously granted Restricted Stock Awards that are still subject to vesting.

Insider Trade Summary

Net Seller: 5,200 shares ($378,976)

Net Sell 1 txn

Insider Argo Laurie H

Role null

Sold 5,200 shs ($379K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	5,200	$72.88	$379K

Holdings After Transaction: Class A Common Stock — 44,839 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 5,200 shares Sale price: $72.88 per share Shares held after transaction: 44,839 shares +1 more

4 metrics

Shares sold 5,200 shares Open-market sale of Class A Common Stock

Sale price $72.88 per share Price for the 5,200 shares sold

Shares held after transaction 44,839 shares Director’s direct holdings following the sale

Restricted Stock Awards 6,275 shares Portion of holdings subject to vesting

Key Terms

Class A Common Stock, open-market sale, Restricted Stock Awards, net-sell

4 terms

Class A Common Stock financial

"security_title: "Class A Common Stock""

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

"transaction_action: "open-market sale""

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

"subject to 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.

net-sell financial

"netBuySellDirection": "net-sell""

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^*

Argo Laurie H

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/12/2026

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	05/12/2026		S		5,200	D	$72.88	44,839(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 6,275 shares of Class A common stock subject to 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 did Solaris Energy (SEI) director Argo Laurie H do in this Form 4?

Argo Laurie H reported selling 5,200 Solaris Energy Class A shares in an open-market transaction. The sale was at a reported price of $72.88 per share, reflecting a routine change in the director’s personal holdings.

How many Solaris Energy (SEI) shares does the director hold after the sale?

Following the reported sale, the director holds 44,839 shares of Solaris Energy Class A common stock. This total includes both unrestricted shares and 6,275 shares tied to Restricted Stock Awards that are still subject to vesting conditions.

At what price were the Solaris Energy (SEI) shares sold in the Form 4 filing?

The reported transaction shows 5,200 Solaris Energy Class A shares sold at $72.88 per share. This price reflects the average sale price for the open-market transaction disclosed, based on the data presented in the Form 4 details.

What are the Restricted Stock Awards mentioned for Solaris Energy (SEI)?

The filing notes 6,275 Solaris Energy Class A shares are subject to previously granted Restricted Stock Awards. These shares remain subject to vesting, meaning they are not yet fully earned and may depend on continued service or other conditions.

Does the Form 4 show any option exercises or derivative transactions for SEI?

The Form 4 data reflects only a sale of non-derivative Class A common stock and no derivative transactions. The derivativeSummary section is empty, indicating no options, warrants, or similar instruments were exercised or converted in this filing.