William A. Zartler - Mar 1, 2025 Form 4 Insider Report for Solaris Energy Infrastructure, Inc. (SEI)

Role: CHAIRMAN AND CEO, Director, 10%+ Owner
Signature: /s/ Christopher M. Powell, Attorney-in-Fact
Stock symbol: SEI
Transactions as of: Mar 1, 2025
Transactions value $: -$2,770,043
Form type: 4
Date filed: 3/4/2025, 05:40 PM
Previous filing: Feb 14, 2025
Next filing: Mar 10, 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SEI	Class A Common Stock	Award	$0	+225K	+26.06%	$0.00	1.09M	Mar 1, 2025	Direct	F1
transaction	SEI	Class A Common Stock	Tax liability	-$2.77M	-81.1K	-7.44%	$34.15	1.01M	Mar 1, 2025	Direct	F2, F3
holding	SEI	Class B Common Stock						727K	Mar 1, 2025	Direct	F4
holding	SEI	Class B Common Stock						3.51M	Mar 1, 2025	See Footnote	F4, F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	SEI	Solaris Energy Infrastructure, LLC Units						727K	Mar 1, 2025	Class A Common Stock	727K		Direct	F6
holding	SEI	Solaris Energy Infrastructure, LLC Units						3.51M	Mar 1, 2025	Class A Common Stock	3.51M		See Footnote	F5, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in three equal installments on the first three anniversaries of the grant date.
F2	Represents shares withheld by the Company to satisfy tax withholding obligations upon the vesting of previously granted Restricted Stock Awards.
F3	Includes 450,381 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.
F4	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.
F5	Represents shares held by Solaris Energy Capital. The Reporting Person is the sole member of Solaris Energy Capital and has the authority to vote or dispose of the shares held by Solaris Energy Capital in his sole discretion. The Reporting Person disclaims beneficial ownership of the shares held by Solaris Energy Capital in excess of his pecuniary interest therein.
F6	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.