---
schema_version: "secwatch.filing_event.v1"
accession: "0001396440-25-000165"
form_type: "8-K"
ticker: "MAIN"
cik: "0001396440"
company_name: "Main Street Capital CORP"
filed_at: "2025-10-09T23:59:59+00:00"
generated_at: "2026-05-17T04:10:11.650919+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Main Street Capital Q3 2025 private loan originations of $117.3M, portfolio at $1.9B

## Summary
- Originated $117.3M in new/increased commitments; funded $113.3M across private loan portfolio.
- Notable new investments: $27.6M term loan to HVAC/plumbing services provider, $14.9M add-on to datacenter services firm.
- Private loan portfolio at cost ~$1.9B across 86 companies as of Sept 30, 2025.
- Portfolio composition: 94% first lien senior secured debt, 6% equity/other securities.

## SEC filing metadata
- accession: 0001396440-25-000165
- form_type: 8-K
- ticker: MAIN
- cik: 0001396440
- company_name: Main Street Capital CORP
- filed_at: 2025-10-09T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1396440/000139644025000165/0001396440-25-000165-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1396440/000139644025000165/main-20251009.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001396440-25-000165
- JSON: https://secwatch.observer/filing/0001396440-25-000165.json
- Plain text: https://secwatch.observer/filing/0001396440-25-000165.txt

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