Current Report · Items 7.01, 8.01, 9.01 · 8-K

Solaris Energy Infrastructure, Inc.

SEINYSEEQUITYCurrent

Regulation FD Disclosure · Other Events

Filed Sep 22, 2026Accepted Sep 22, 2026, 8:06 AM EDTCIK 1697500Accession 0001193125-26-397255

Company context

Solaris Energy Infrastructure, Inc. (NYSE: SEI) delivers comprehensive power infrastructure solutions including generation, distribution, installation and commissioning, aftermarket support, and operations and maintenance. Headquartered in Houston, Texas, Solaris serves multiple U.S. end markets, including data centers, energy, and other commercial and industrial sectors. Additional information is available on our website, solaris-energy.com.

Current securities

SEINYSE · EQUITY · Current

Recent company filings

Disclosure sections

Items 7.01, 8.01, 9.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 7.01Item 7.01 - Regulation FD Disclosure

Item 7.01. Regulation FD Disclosure. On September 22, 2026, Solaris Energy Infrastructure, Inc. (the “Company”) announced that, subject to market conditions, Solaris Energy Infrastructure, LLC (the “Issuer”), a subsidiary of the Company, intends to offer for sale $1.0 billion aggregate principal amount of Senior Notes due 2032 (the “Notes”) in a private placement (the “Offering”) conducted pursuant to Rule 144A and Regulation S under the Securities Act of 1933, as amended (the “Securities Act”). In connection with the Offering, the Company is providing certain information regarding the Company to prospective investors in a preliminary offering memorandum, dated September 22, 2026, and such information is furnished as Exhibit 99.1 hereto. The Issuer intends to use the net proceeds from the Offering for general corporate purposes, growth capital expenditures and to pay fees and expenses related to the Offering. In accordance with General Instruction B.2 of Form 8-K, the information contained in this Current Report on Form 8-K under this Item 7.01 and set forth in Exhibit 99.1 hereto shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference into any filing under the Securities Act or the Exchange Act, except as expressly set forth by specific reference in such filing.

Item 8.01Item 8.01 - Other Events

Item 8.01. Other Events. The Company is filing as Exhibit 99.2 hereto a press release issued on September 22, 2026 announcing the Offering. The contents of such press release are incorporated by reference in this Item 8.01. This Current Report on Form 8-K, including Exhibits 99.1 and 99.2 hereto, is not an offer to sell or a solicitation of an offer to buy any securities, nor shall there be any sales of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful. The Notes will not be registered under the Securities Act or any state securities law and may not be offered or sold in the United States absent registration or an applicable exemption from registration under the Securities Act and applicable state securities laws.

Filed exhibits (2)

EX-99.1 (by filename) d182097dex991.htm

Exhibit 99.1 Company Overview We deliver comprehensive power infrastructure solutions including generation, distribution, installation and commissioning, aftermarket support, and operations and maintenance to data center, industrial, utility and other commercial end-markets. We also deliver services for the management of raw materials used in oil and natural gas well completions. Headquartered in Houston, Texas, Solaris Energy Infrastructure, Inc. (together with its consolidated subsidiaries, “Solaris,” the “Company,” “we,” “our” and “us”) delivers these offerings through its Solaris Power Solutions and Solaris Logistics Solutions business segments. The Company has undergone a strategic transformation since 2024, evolving into a leading provider of turn-key, co-located, behind-the-meter power for some of the world’s largest technology companies. Its integrated offering spans site construction, fuel sourcing and last-mile delivery, power generation, emissions control, power control and distribution, battery energy storage systems, and full operations and maintenance - making Solaris a true one-stop shop for critical power infrastructure independent of grid interconnection constra…

Open exhibit ↗

EX-99.2 (by filename) d182097dex992.htm

Exhibit 99.2 Solaris Energy Infrastructure Announces Offering of $1.0 Billion of Senior Notes due 2032 September 22, 2026 HOUSTON - (BUSINESS WIRE) - Solaris Energy Infrastructure, Inc. (NYSE: SEI) (“Solaris”) today announced that Solaris Energy Infrastructure, LLC (the “Issuer”), a subsidiary of Solaris, intends, subject to market and other conditions, to offer (the “Offering”) for sale $1.0 billion aggregate principal amount of Senior Notes due 2032 (the “Notes”). The Issuer intends to use the net proceeds from the Offering for general corporate purposes, growth capital expenditures and to pay fees and expenses related to the Offering. The Notes will be fully and unconditionally guaranteed on a senior unsecured basis by Solaris and all of the Issuer’s existing and future subsidiaries that guarantee certain indebtedness of the Issuer or a subsidiary guarantor, including the Issuer’s revolving credit facility. The Notes have not been and will not be registered under the Securities Act of 1933, as amended (the “Securities Act”), or the securities laws of any other jurisdiction and may not be offered or sold in the United States absent registration or an applicable exemption from…

Open exhibit ↗