Solaris Energy Infrastructure (SEI) legal chief sells 36,852 shares

Rhea-AI Filing Summary

Solaris Energy Infrastructure, Inc. Chief Legal Officer Christopher M. Powell reported selling 36,852 shares of Class A Common Stock in three open-market transactions on May 11, 2026. The reported weighted average sale prices were approximately $73.90, $74.84, and $75.33 per share.

Footnotes state that each reported price is a weighted average for multiple trades within price ranges from $73.26 to $75.46 per share, and that detailed trade breakdowns are available on request. Powell’s holdings include 58,447 shares subject to previously granted Restricted Stock Awards that remain subject to vesting.

Insider Trade Summary

Net Seller: 36,852 shares ($2,750,444)

Net Sell 3 txns

Insider Powell Christopher M

Role Chief Legal Officer

Sold 36,852 shs ($2.75M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	9,179	$73.90	$678K
Sale	Class A Common Stock	25,492	$74.84	$1.91M
Sale	Class A Common Stock	2,181	$75.33	$164K

Holdings After Transaction: Class A Common Stock — 141,790 shares (Direct, null)

Footnotes (1)

1. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $73.26 to $74.25 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. Includes 58,447 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $74.27 to $75.27 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. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $75.28 to $75.46 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.

Key Figures

Total shares sold: 36,852 shares Sale block 1: 2,181 shares at $75.33/share Sale block 2: 25,492 shares at $74.84/share +2 more

5 metrics

Total shares sold 36,852 shares Aggregate of three open-market sales on May 11, 2026

Sale block 1 2,181 shares at $75.33/share Class A Common Stock, open-market sale

Sale block 2 25,492 shares at $74.84/share Class A Common Stock, open-market sale

Sale block 3 9,179 shares at $73.90/share Class A Common Stock, open-market sale

Restricted stock awards 58,447 shares Subject to vesting under previously granted Restricted Stock Awards

Key Terms

Class A Common Stock, open-market sale, weighted average sale price, Restricted Stock Awards, +1 more

5 terms

Class A Common Stock financial

"The reported transactions involve Class A Common Stock of Solaris Energy Infrastructure."

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

"Each transaction is coded as an open-market sale of SEI 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.

weighted average sale price financial

"The reported price in Column 4 is a weighted average sale price."

Restricted Stock Awards financial

"Includes 58,447 shares of Class A common stock subject to previously granted Restricted Stock Awards."

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

"INSIDER FILING DATA (Form 4) summarizes Powell’s SEI share sales."

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^*

Powell Christopher M

(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 Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

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	05/11/2026		S		9,179	D	$73.9(1)	141,790(2)	D
Class A Common Stock	05/11/2026		S		25,492	D	$74.84(3)	116,298(2)	D
Class A Common Stock	05/11/2026		S		2,181	D	$75.33(4)	114,117(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. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $73.26 to $74.25 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 58,447 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 $74.27 to $75.27 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.

4. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $75.28 to $75.46 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.

Remarks:

	/s/ Christopher M. Powell	05/12/2026
	** 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 Christopher M. Powell report on this Form 4?

Christopher M. Powell reported selling 36,852 shares of SEI Class A Common Stock. The sales occurred in three open-market transactions on May 11, 2026, at weighted average prices between roughly $73.90 and $75.33 per share, according to the Form 4 details.

What prices did SEI’s Chief Legal Officer receive for the sold shares?

The reported weighted average sale prices were $73.90, $74.84, and $75.33 per share. Footnotes explain these are averages for multiple trades executed within narrower ranges between $73.26 and $75.46 per share across the three sale groupings.

How many Solaris Energy Infrastructure (SEI) shares did Powell sell in total?

Powell sold a total of 36,852 SEI Class A Common Stock shares. The Form 4 transaction summary aggregates three separate open-market sale entries, with individual sale sizes of 2,181 shares, 25,492 shares, and 9,179 shares executed on May 11, 2026.

Were SEI shares sold by Christopher Powell in open-market transactions?

Yes, all reported transactions are coded as open-market or private sales. Each entry uses transaction code “S” and describes the action as an open-market sale, indicating the shares were disposed of through market or similar transactions rather than through grants or exercises.

What restricted stock holdings does SEI’s Christopher Powell still have?

A footnote states Powell’s holdings include 58,447 SEI Class A shares subject to Restricted Stock Awards. These awards were previously granted and remain subject to vesting conditions, meaning the shares are not yet fully unrestricted despite being reflected within his reported share position.

How are the sale prices in the SEI Form 4 footnotes described?

Each sale’s reported price is a weighted average, not a single trade price. The footnotes note trades occurred in ranges such as $73.26–$74.25 and $75.28–$75.46, and confirm Powell will provide complete per-trade price details to interested parties upon request.