Main Street Capital CORP SEC filings MAIN
Main Street Capital CORP has 1,000 filings in SEC EDGAR's recent list, going back to Oct 12, 2021. Its latest annual report, Form 10-K, was filed on Feb 27, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 3, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13D | Ownership over 5% (active) | Nov 4, 2026 | — |
| 8-K |
Current report
Other events
|
Nov 3, 2026 | Nov 3, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 30, 2026 | Oct 27, 2026 |
| 424B2 | Prospectus | Oct 28, 2026 | — |
| 497AD | Filing | Oct 28, 2026 | — |
| 497AD | Filing | Oct 28, 2026 | — |
| 497AD | Filing | Oct 28, 2026 | — |
| 497AD | Filing | Oct 28, 2026 | — |
| 497AD | Filing | Oct 27, 2026 | — |
| FWP | Free writing prospectus | Oct 27, 2026 | — |
| 424B2 | Prospectus | Oct 27, 2026 | — |
| 497AD | Filing | Oct 26, 2026 | — |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Sep 15, 2026 |
| 40-17G | Filing | Oct 16, 2026 | — |
| 8-K |
Current report
Results of operations
|
Oct 15, 2026 | Oct 15, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 8, 2026 | Oct 8, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Aug 24, 2026 | Aug 21, 2026 |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Jun 15, 2026 |
| 8-K |
Current report
Material agreement
|
Aug 12, 2026 | Aug 11, 2026 |
| 424B3 | Prospectus | Aug 12, 2026 | — |
| FWP | Free writing prospectus | Aug 7, 2026 | — |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Other events
|
Aug 4, 2026 | Aug 4, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 16, 2026 | Jul 16, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 9, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 30, 2026 |
| 144 | Notice of proposed sale | Jun 30, 2026 | — |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Jun 30, 2026 | Jun 29, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 11, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 18, 2026 |
| FWP | Free writing prospectus | May 8, 2026 | — |
| 10-Q | Quarterly report | May 8, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| 4 | Insider transaction | May 6, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | May 6, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 4 | Insider transaction | May 6, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 4 | Insider transaction | May 6, 2026 | Apr 15, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 6, 2026 | May 4, 2026 |
| 8-K |
Current report
Other events
|
May 5, 2026 | May 5, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 16, 2026 | Apr 16, 2026 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Apr 9, 2026 | Apr 8, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 9, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 31, 2026 | Mar 27, 2026 |
| 424B2 | Prospectus | Mar 31, 2026 | — |
| 497AD | Filing | Mar 27, 2026 | — |
| 497AD | Filing | Mar 27, 2026 | — |
| FWP | Free writing prospectus | Mar 27, 2026 | — |
| 424B2 | Prospectus | Mar 27, 2026 | — |
| DEF 14A | Proxy statement | Mar 23, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Feb 13, 2026 |
| FWP | Free writing prospectus | Feb 27, 2026 | — |
| 10-K | Annual report | Feb 27, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Other events
|
Feb 24, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Jan 15, 2026 |
| 8-K |
Current report
Results of operations
|
Jan 15, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 4 | Insider transaction | Jan 13, 2026 | Dec 15, 2025 |
| 8-K |
Current report
Results of operations
|
Jan 8, 2026 | Jan 8, 2026 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Oct 15, 2025 |
| 8-K |
Current report
Material agreement
|
Nov 12, 2025 | Nov 12, 2025 |
| 424B3 | Prospectus | Nov 12, 2025 | — |
| FWP | Free writing prospectus | Nov 7, 2025 | — |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Other events
|
Nov 4, 2025 | Nov 4, 2025 |
| 40-17G | Filing | Oct 14, 2025 | — |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Sep 15, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 14, 2025 | Oct 14, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 9, 2025 | Oct 9, 2025 |
| 8-K |
Current report
Other events
|
Sep 26, 2025 | Sep 26, 2025 |
| N-23C-2/A | Filing | Sep 25, 2025 | Sep 25, 2025 |
| N-23C-2 | Filing | Sep 25, 2025 | Sep 25, 2025 |
| APP ORDR | Filing | Sep 22, 2025 | — |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 29, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 15, 2025 |
| APP NTC | Filing | Aug 25, 2025 | — |
| CERT | Nyse texas certification | Aug 18, 2025 | — |
| 8-A12B | Filing | Aug 18, 2025 | — |
| 8-K |
Current report
Material agreement, New debt
|
Aug 15, 2025 | Aug 13, 2025 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Listed as
- MAIN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- MD
- Headquarters
- Houston, TX
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1396440
Source: SEC EDGAR filings. This is company-reported data, not investment advice.