---
schema_version: "secwatch.filing_event.v1"
accession: "0001396440-25-000092"
form_type: "8-K"
ticker: "MAIN"
cik: "0001396440"
company_name: "Main Street Capital CORP"
filed_at: "2025-07-17T23:59:59+00:00"
generated_at: "2026-05-18T05:56:13.416887+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Main Street prelim Q2 NII $0.98-$1.00/sh, DNII $1.05-$1.07/sh; NAV record $32.27-$32.33

## Summary
- Prelim Q2 NII $0.98-$1.00/sh and DNII $1.05-$1.07/sh; includes $0.05-$0.06/sh tax expense.
- NAV per share $32.27-$32.33, a record 12th consecutive quarterly increase, up $0.24-$0.30 from March 31, 2025.
- Quarterly annualized ROE estimated over 17%; driven by net fair value increase and largest realized gain in company history.
- Non-accrual investments at 2.1% of portfolio fair value and 5.0% at cost as of June 30, 2025.
- LMM portfolio net increase of $108.4M in cost basis; private loan net decrease of $34.9M.

## SEC filing metadata
- accession: 0001396440-25-000092
- form_type: 8-K
- ticker: MAIN
- cik: 0001396440
- company_name: Main Street Capital CORP
- filed_at: 2025-07-17T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1396440/000139644025000092/0001396440-25-000092-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1396440/000139644025000092/main-20250717.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001396440-25-000092
- JSON: https://secwatch.observer/filing/0001396440-25-000092.json
- Plain text: https://secwatch.observer/filing/0001396440-25-000092.txt

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