---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-219852"
form_type: "8-K"
ticker: "SEI"
cik: "0001697500"
company_name: "Solaris Energy Infrastructure, Inc."
filed_at: "2026-05-12T21:15:31+00:00"
generated_at: "2026-05-12T21:19:30.195129+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Solaris issues $1.3B 6.375% senior notes due 2031 and enters $650M revolver

## Summary
- Issued $1.3B 6.375% senior notes due 2031 at par; net proceeds ~$1,276.1M after discount and expenses.
- Entered $650M revolving credit facility with up to $200M accordion; MUFG Bank serves as administrative agent.
- Proceeds used to repay outstanding borrowings; terminated $500M term loan and ~$148.6M Stonebriar term loan.
- Stonebriar termination incurred ~$5.9M prepayment fees; all liens and security interests released.
- Notes mature May 15, 2031, interest semi-annual at 6.375%; senior unsecured guaranteed by parent and subsidiaries.

## SEC filing metadata
- accession: 0001193125-26-219852
- form_type: 8-K
- ticker: SEI
- cik: 0001697500
- company_name: Solaris Energy Infrastructure, Inc.
- filed_at: 2026-05-12T21:15:31+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 1.02, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1697500/000119312526219852/0001193125-26-219852-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1697500/000119312526219852/d112244d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-219852
- JSON: https://secwatch.observer/filing/0001193125-26-219852.json
- Plain text: https://secwatch.observer/filing/0001193125-26-219852.txt

## Key facts
- Debt Financings
  Solaris Energy Infrastructure, Inc. incurred senior notes of $1.3 billion aggregate principal amount with U.S. Bank Trust Company, National Association at 6.375% per annum maturing May 15, 2031.
  - Instrument: senior notes
  - Principal: $1.3 billion aggregate principal amount
  - Counterparty: U.S. Bank Trust Company, National Association
  - Rate: 6.375% per annum
  - Maturity: May 15, 2031
  - Event: incurrence
  source text: On May 12, 2026, Solaris Energy Infrastructure, LLC (the “Issuer”), a subsidiary of Solaris Energy Infrastructure, Inc. (the “Company”), issued $1.3 billion aggregate principal amount of a new series of the Issuer’s 6.375% Senior Notes due 2031 (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”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1697500/000119312526219852/0001193125-26-219852-index.htm
- Debt Financings
  Solaris Energy Infrastructure, Inc. incurred revolving credit of up to $650.0 million with MUFG Bank, Ltd..
  - Instrument: revolving credit
  - Principal: up to $650.0 million
  - Counterparty: MUFG Bank, Ltd.
  - Event: incurrence
  source text: Trust Company, as collateral agent, and the lenders party thereto. Pursuant to the Credit Agreement, the lenders agree to provide the Issuer a revolving credit facility of up to $650.0 million, including a sublimit for the issuance of letters of credit in an amount up to $150.0 million (such revolving credit facility, the “Revolving Credit Facility”). At the Issuer’s
  evidence_url: https://www.sec.gov/Archives/edgar/data/1697500/000119312526219852/0001193125-26-219852-index.htm
- Material Agreements
  Solaris Energy Infrastructure, Inc. entered into Indenture with U.S. Bank Trust Company, National Association valued at $1.3 billion aggregate principal amount (effective 2026-05-12).
  - Action: entry
  - Agreement: notes offering
  - Counterparty: U.S. Bank Trust Company, National Association
  - Value: $1.3 billion aggregate principal amount
  - Effective: 2026-05-12
  source text: Solaris Energy Infrastructure, LLC (the “Issuer”), a subsidiary of Solaris Energy Infrastructure, Inc. (the “Company”), issued $1.3 billion aggregate principal amount of a new series of the Issuer’s 6.375% Senior Notes due 2031 (the “Notes”) in a private placement (the “Offering”)
  evidence_url: https://www.sec.gov/Archives/edgar/data/1697500/000119312526219852/0001193125-26-219852-index.htm
- Material Agreements
  Solaris Energy Infrastructure, Inc. entered into Credit Agreement with MUFG Bank, Ltd. valued at $650.0 million (effective 2026-05-12).
  - Action: entry
  - Agreement: credit facility
  - Counterparty: MUFG Bank, Ltd.
  - Value: $650.0 million
  - Effective: 2026-05-12
  source text: the Company and the Issuer, as borrower, entered into a credit agreement (the “Credit Agreement”) with MUFG Bank, Ltd., as administrative agent, CSC Delaware Trust Company, as collateral agent, and the lenders party thereto. Pursuant to the Credit Agreement, the lenders agree to provide the Issuer a revolving credit facility of up to $650.0 million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1697500/000119312526219852/0001193125-26-219852-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.