---
schema_version: "secwatch.filing_event.v1"
accession: "0001396440-26-000055"
form_type: "8-K"
ticker: "MAIN"
cik: "0001396440"
company_name: "Main Street Capital CORP"
filed_at: "2026-04-09T23:59:59+00:00"
generated_at: "2026-05-15T06:46:32.057892+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Main Street issues $150M 6.93% senior notes due 2031

## Summary
- Issued $150M aggregate principal of 6.93% Series A Senior Notes due April 15, 2031.
- Interest payable semiannually; notes redeemable at Main Street's option at par plus make-whole premium.
- Proceeds to repay outstanding revolver borrowings, fund investments, and for general corporate purposes.
- Notes are unsecured, rank pari passu with other unsecured unsubordinated debt; include change-of-control prepayment clause.

## SEC filing metadata
- accession: 0001396440-26-000055
- form_type: 8-K
- ticker: MAIN
- cik: 0001396440
- company_name: Main Street Capital CORP
- filed_at: 2026-04-09T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1396440/000139644026000055/0001396440-26-000055-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1396440/000139644026000055/main-20260408.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001396440-26-000055
- JSON: https://secwatch.observer/filing/0001396440-26-000055.json
- Plain text: https://secwatch.observer/filing/0001396440-26-000055.txt

## Source-grounded claims
- claim_id: 874f902ae370065135e26f661142b1f8fc84a69f
  claim: Main Street Capital CORP incurred senior notes of $150,000,000 with certain qualified institutional investors at 6.93% maturing April 15, 2031.
  evidence_excerpt: On April 8, 2026, Main Street Capital Corporation (“Main Street”) and certain qualified institutional investors entered into a Master Note Purchase Agreement (the “Note Purchase Agreement”), which governs the issuance of $150,000,000 in aggregate principal amount of 6.93% Series A Senior Notes due April 15, 2031
  evidence_url: https://www.sec.gov/Archives/edgar/data/1396440/000139644026000055/0001396440-26-000055-index.htm
- claim_id: 8c936ffcc41526d07671ba8777657177efbb2b65
  claim: Main Street Capital CORP entered into Master Note Purchase Agreement with certain qualified institutional investors valued at $150,000,000 6.93% Series A Senior Notes due April 15, 2031 (effective 2026-04-08).
  evidence_excerpt: On April 8, 2026, Main Street Capital Corporation (“Main Street”) and certain qualified institutional investors entered into a Master Note Purchase Agreement (the “Note Purchase Agreement”), which governs the issuance of $150,000,000 in aggregate principal amount of 6.93% Series A Senior Notes due April 15, 2031 (the “Series A Notes”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1396440/000139644026000055/0001396440-26-000055-index.htm

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