UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): April 24, 2026
SOLARIS ENERGY INFRASTRUCTURE, INC.
(Exact name of registrant as specified in charter)
| Delaware | 001-38090 | 81-5223109 | ||
| (State or other jurisdiction of incorporation) | (Commission File Number) | (IRS Employer Identification No.) |
9651 Katy Freeway, Suite 300
Houston, Texas 77024
(Address of principal executive offices)
(Zip Code)
(281) 501-3070
(Registrant’s telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
Securities registered pursuant to Section 12(b) of the Act:
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||
| Class A Common Stock, $0.01 par value | “SEI” | New York Stock Exchange | ||
| Indicate by check NYSE Texas, Inc. |
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
| Item 8.01 | Other Events. |
On April 24, 2026, a wholly owned subsidiary of Solaris Energy Infrastructure, Inc. entered into an agreement to provide over 600 MW of power capacity, including balance of plant scope, to a new customer that is an affiliate of an investment-grade technology company for a term of 10 years, beginning in late 2026 and scaling through 2028.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Date: April 28, 2026
| SOLARIS ENERGY INFRASTRUCTURE, INC. | ||
| By: | /s/ Stephan E. Tompsett | |
| Name: | Stephan E. Tompsett | |
| Title: | Chief Financial Officer | |