---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-049877"
form_type: "8-K"
ticker: "TSLX"
cik: "0001508655"
company_name: "Sixth Street Specialty Lending, Inc."
filed_at: "2025-03-07T23:59:59+00:00"
generated_at: "2026-05-25T03:35:21.815578+00:00"
event_type: "debt"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Sixth Street Specialty Lending extends revolver to 2030, increases accordion to $2.5B

## Summary
- Extended $1.525B revolving period termination to March 2, 2029; stated maturity to March 4, 2030.
- Increased uncommitted accordion capacity from $2.0B to $2.5B.
- Sixteenth amendment to the second amended and restated senior secured revolving credit facility.

## SEC filing metadata
- accession: 0001193125-25-049877
- form_type: 8-K
- ticker: TSLX
- cik: 0001508655
- company_name: Sixth Street Specialty Lending, Inc.
- filed_at: 2025-03-07T23:59:59+00:00
- event_type: debt
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1508655/000119312525049877/0001193125-25-049877-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1508655/000119312525049877/d930072d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-049877
- JSON: https://secwatch.observer/filing/0001193125-25-049877.json
- Plain text: https://secwatch.observer/filing/0001193125-25-049877.txt

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