Major holder KTR exits 2M Solaris Energy (SEI) shares after conversion

Rhea-AI Filing Summary

Solaris Energy Infrastructure, Inc. disclosed that KTR Management Company, LLC, a ten percent owner, converted 2,000,000 Solaris Energy Infrastructure, LLC units (together with a corresponding number of Class B common shares) into 2,000,000 shares of Class A common stock. The 2,000,000 Class B shares, which carried voting rights but no economic rights, were cancelled for no consideration on a one-for-one basis in connection with the redemption of the Solaris LLC units. KTR then sold 2,000,000 Class A shares in an open‑market transaction at $70.75 per share, leaving it with no Class A or Class B shares reported as directly held after the transaction. Footnotes state that John Tuma owns all equity interests in KTR and has sole authority to vote or dispose of the shares held by KTR, so he may be deemed to beneficially own these securities.

Positive

• None.

Negative

• A ten percent owner, KTR Management Company, LLC, converted and then sold 2,000,000 shares of Class A common stock at $70.75 per share, leaving no directly held Class A or Class B shares reported after the transaction, representing a complete exit of this major holder’s reported direct position.

Insights

Equity ownership and governance analyst

Large holder converts LLC units into Class A shares, then fully exits position via sale.

The filing shows KTR Management Company, LLC, a ten percent owner, converting 2,000,000 Solaris LLC units and paired Class B voting shares into 2,000,000 Class A common shares, then selling all 2,000,000 Class A shares at $70.75 each.

This is an exercise‑and‑sell pattern: a derivative conversion followed by an open‑market sale, resulting in zero Class A or Class B shares reported as directly held by KTR. Footnotes state that John Tuma owns all equity in KTR and has sole voting and dispositive authority, so he may be deemed to beneficially own these securities through KTR.

The scale is meaningful because KTR was identified as a ten percent owner, implying this was a significant block. While motives are not described, the transaction reduces a major holder’s reported direct stake to zero as of April 30, 2026, which can alter the company’s ownership profile and voting dynamics.

Insider Trade Summary

Net Seller: 2,000,000 shares ($141,500,000)

Net Sell 4 txns

Insider KTR Management Company, LLC, Tuma John

Role null | null

Sold 2,000,000 shs ($141.50M)

Type	Security	Shares	Price	Value
Conversion	Solaris Energy Infrastructure, LLC Units	2,000,000	$0.00	--
Other	Class B Common Stock	2,000,000	$0.00	--
Conversion	Class A Common Stock	2,000,000	$0.00	--
Sale	Class A Common Stock	2,000,000	$70.75	$141.50M

Holdings After Transaction: Solaris Energy Infrastructure, LLC Units — 0 shares (Direct, null); Class B Common Stock — 0 shares (Direct, null); Class A Common Stock — 2,000,000 shares (Direct, null)

Footnotes (1)

1. Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally. 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 (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein. Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

Key Figures

Class A shares sold: 2,000,000 shares Sale price: $70.75 per share Class A shares after sale: 0 shares +2 more

5 metrics

Class A shares sold 2,000,000 shares Open-market sale on April 30, 2026

Sale price $70.75 per share Price for 2,000,000 Class A shares sold

Class A shares after sale 0 shares Total Class A directly held by KTR post-transaction

Class B shares cancelled 2,000,000 shares Cancelled for no consideration upon redemption and exchange

Solaris LLC units converted 2,000,000 units Converted into 2,000,000 Class A shares

Key Terms

Class B common stock, Solaris LLC Units, derivative security, beneficially own

4 terms

Class B common stock financial

"Each share of Class B common stock ... has no economic rights but entitles the holder to one vote"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

Solaris LLC Units financial

"units of Solaris LLC ("Solaris LLC Units") ... are exchangeable from time to time for shares of Class A common stock"

derivative security financial

"transaction_code_description": "Conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

beneficially own financial

"Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

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

X

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^*

KTR Management Company, LLC

(Last) (First) (Middle)

327 N. COMMERCE STREET

(Street)

CENTERVILLE TEXAS 75833

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	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 B Common Stock(1)	04/30/2026		J(2)		2,000,000	D	$0(2)	0	D
Class A Common Stock	04/30/2026		C(2)		2,000,000	A	$0(2)	2,000,000	D(3)
Class A Common Stock	04/30/2026		S		2,000,000	D	$70.75	0	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(2)	(2)	04/30/2026		C(2)			2,000,000	(2)	(2)	Class A Common Stock	2,000,000	$0	0	D

1. Name and Address of Reporting Person^*

KTR Management Company, LLC

(Last) (First) (Middle)

327 N. COMMERCE STREET

(Street)

CENTERVILLE TEXAS 75833

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Tuma John

(Last) (First) (Middle)

327 N. COMMERCE STREET

(Street)

CENTERVILLE TEXAS 75833

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

2. 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 (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

3. Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

Remarks:

	/s/ Christopher M. Powell, Attorney-in-Fact	05/04/2026
	KTR Management Company, LLC By: /s/ Christopher M. Powell	05/04/2026
	** 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 KTR Management Company report in SEI stock?

KTR Management Company, a ten percent owner of Solaris Energy Infrastructure (SEI), converted 2,000,000 Solaris LLC units into 2,000,000 Class A shares, then sold all 2,000,000 Class A shares in an open‑market transaction at $70.75 per share.

How many Solaris Energy Infrastructure (SEI) shares were sold and at what price?

The filing reports that 2,000,000 shares of Class A common stock of Solaris Energy Infrastructure were sold in an open‑market transaction at $70.75 per share, following a conversion of Solaris LLC units into the same number of Class A shares.

What happened to the Class B common stock in this SEI insider filing?

The filing states 2,000,000 shares of Class B common stock, which carried voting rights but no economic rights, were cancelled for no consideration on a one‑for‑one basis when the corresponding Solaris LLC units were redeemed and exchanged into 2,000,000 Class A common shares.

Does KTR Management still hold Solaris Energy Infrastructure (SEI) shares after this Form 4?

After converting securities and selling 2,000,000 Class A shares, the report shows total shares following the sale as 0 for the Class A and Class B positions, indicating no directly held shares by KTR Management Company, LLC as of the reported date.

What is John Tuma’s relationship to KTR Management and SEI shares?

Footnotes explain that John Tuma owns all equity interests in KTR Management Company, LLC and has sole authority to vote or dispose of shares held by KTR, so he may be deemed to beneficially own Solaris Energy Infrastructure securities held directly by KTR.