---
schema_version: "secwatch.filing_event.v1"
accession: "0001396440-25-000159"
form_type: "8-K"
ticker: "MAIN"
cik: "0001396440"
company_name: "Main Street Capital CORP"
filed_at: "2025-09-26T23:59:59+00:00"
generated_at: "2026-05-17T05:33:06.697022+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Main Street Capital redeems $150M in Series A and B senior notes due Dec 2025

## Summary
- Redeemed all $100M of 7.84% Series A Senior Notes due December 23, 2025.
- Redeemed all $50M of 7.53% Series B Senior Notes due December 23, 2025.
- Redemption at 100% principal plus accrued interest to September 26, 2025.

## SEC filing metadata
- accession: 0001396440-25-000159
- form_type: 8-K
- ticker: MAIN
- cik: 0001396440
- company_name: Main Street Capital CORP
- filed_at: 2025-09-26T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1396440/000139644025000159/0001396440-25-000159-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1396440/000139644025000159/main-20250926.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001396440-25-000159
- JSON: https://secwatch.observer/filing/0001396440-25-000159.json
- Plain text: https://secwatch.observer/filing/0001396440-25-000159.txt

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