Cynthia M. Durrett - Mar 1, 2025 Form 4 Insider Report for Solaris Energy Infrastructure, Inc. (SEI)

Role: CHIEF ADMINISTRATIVE OFFICER, Director
Signature: /s/ Christopher M. Powell, Attorney-in-Fact
Stock symbol: SEI
Transactions as of: Mar 1, 2025
Transactions value $: -$552,615
Form type: 4
Date filed: 3/4/2025, 05:44 PM
Previous filing: Mar 5, 2024
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	+34.4K	+21.54%	$0.00	194K	Mar 1, 2025	Direct	F1
transaction	SEI	Class A Common Stock	Tax liability	-$553K	-16.2K	-8.33%	$34.15	178K	Mar 1, 2025	Direct	F2, F3
holding	SEI	Class B Common Stock						165K	Mar 1, 2025	Direct	F4

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 Oilfield Infrastructure, LLC Units						165K	Mar 1, 2025	Class A Common Stock	165K		Direct	F5

* 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 annual 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 86,929 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.
F4	Each share of Class B common stock has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.
F5	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.