GOLUB CAPITAL BDC, Inc. SEC filings GBDC
GOLUB CAPITAL BDC, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Dec 17, 2012. Its latest annual report, Form 10-K, was filed on Nov 18, 2025 for the period ended Sep 30, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 3, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 6, 2026 (results of operations). The company's fiscal year ends on September 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Oct 6, 2026 | Oct 6, 2026 |
| 40-17G | Filing | Sep 10, 2026 | — |
| 8-K |
Current report
Other events
|
Aug 11, 2026 | Aug 7, 2026 |
| 4 | Insider transaction | Aug 11, 2026 | Aug 7, 2026 |
| 4 | Insider transaction | Aug 11, 2026 | Aug 7, 2026 |
| 10-Q | Quarterly report | Aug 3, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2026 | Aug 3, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2026 | Aug 3, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 9, 2026 | Jul 2, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 7, 2026 | Jul 7, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
May 27, 2026 | May 27, 2026 |
| 8-K |
Current report
Material agreement
|
May 20, 2026 | May 19, 2026 |
| 424B2 | Prospectus | May 20, 2026 | — |
| 497AD | Filing | May 19, 2026 | — |
| 497AD | Filing | May 19, 2026 | — |
| 497AD | Filing | May 19, 2026 | — |
| FWP | Free writing prospectus | May 19, 2026 | — |
| 424B2 | Prospectus | May 19, 2026 | — |
| 10-Q | Quarterly report | May 4, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 4, 2026 | May 4, 2026 |
| 8-K |
Current report
Results of operations
|
May 4, 2026 | May 4, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 6, 2026 | Apr 6, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Feb 5, 2026 | Feb 2, 2026 |
| 10-Q | Quarterly report | Feb 4, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2026 | Feb 4, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2026 | Feb 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 13, 2026 | — |
| 8-K |
Current report
Results of operations
|
Jan 8, 2026 | Jan 8, 2026 |
| DEFA14A | Additional proxy material | Dec 11, 2025 | — |
| DEF 14A | Proxy statement | Dec 11, 2025 | Feb 2, 2026 |
| 10-K | Annual report | Nov 18, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 18, 2025 | Nov 18, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 18, 2025 | Nov 18, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 7, 2025 | Oct 7, 2025 |
| 8-K |
Current report
New debt
|
Sep 26, 2025 | Sep 26, 2025 |
| 8-K |
Current report
Material agreement
|
Sep 25, 2025 | Sep 19, 2025 |
| 424B2 | Prospectus | Sep 23, 2025 | — |
| 497AD | Filing | Sep 19, 2025 | — |
| FWP | Free writing prospectus | Sep 19, 2025 | — |
| 424B2 | Prospectus | Sep 19, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Aug 29, 2025 | Aug 25, 2025 |
| 40-17G | Filing | Aug 29, 2025 | — |
| 10-Q | Quarterly report | Aug 4, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2025 | Aug 4, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2025 | Aug 4, 2025 |
| APP ORDR | Filing | Jul 18, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jul 7, 2025 | Jul 7, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 16, 2025 | Jun 13, 2025 |
| 8-K |
Current report
Other events
|
May 29, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 27, 2025 |
| APP NTC | Filing | May 22, 2025 | — |
| 8-K |
Current report
Material agreement
|
May 16, 2025 | May 16, 2025 |
| 424B3 | Prospectus | May 16, 2025 | — |
| 8-K |
Current report
Officer or director change
|
May 8, 2025 | May 2, 2025 |
| 3 | Initial insider ownership | May 5, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| 10-Q | Quarterly report | May 5, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 5, 2025 | May 5, 2025 |
| 8-K |
Current report
Results of operations
|
May 5, 2025 | May 5, 2025 |
| 40-APP | Filing | Apr 29, 2025 | — |
| 8-K |
Current report
Material agreement, New debt
|
Apr 10, 2025 | Apr 4, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 4, 2025 | Apr 4, 2025 |
| N-2ASR | Filing | Mar 31, 2025 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Feb 25, 2025 | Feb 21, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Feb 6, 2025 | Feb 3, 2025 |
| 10-Q | Quarterly report | Feb 4, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 10, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jan 6, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Dec 23, 2024 | Dec 20, 2024 |
| CORRESP | Letter to the SEC | Dec 13, 2024 | — |
| DEFA14A | Additional proxy material | Dec 13, 2024 | — |
| DEF 14A | Proxy statement | Dec 13, 2024 | Feb 2, 2024 |
| PRE 14A | Preliminary proxy statement | Dec 6, 2024 | Dec 6, 2024 |
| 8-K |
Current report
Material agreement
|
Dec 6, 2024 | Dec 4, 2024 |
| 4/A | Form 4/a | Dec 6, 2024 | Aug 9, 2024 |
| 8-K |
Current report
New debt
|
Dec 4, 2024 | Dec 3, 2024 |
| 497AD | Filing | Dec 3, 2024 | — |
| 8-K |
Current report
Material agreement
|
Nov 27, 2024 | Nov 25, 2024 |
| 424B2 | Prospectus | Nov 26, 2024 | — |
| FWP | Free writing prospectus | Nov 25, 2024 | — |
| 497AD | Filing | Nov 25, 2024 | — |
| 497AD | Filing | Nov 25, 2024 | — |
| 497AD | Filing | Nov 25, 2024 | — |
| 424B2 | Prospectus | Nov 25, 2024 | — |
| 8-K |
Current report
Material agreement
|
Nov 21, 2024 | Nov 15, 2024 |
| 10-K | Annual report | Nov 19, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 19, 2024 | Nov 19, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 19, 2024 | Nov 19, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 18, 2024 | Nov 18, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 7, 2024 | Oct 7, 2024 |
| CORRESP | Letter to the SEC | Sep 30, 2024 | — |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 5, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 5, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 28, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 28, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 26, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 26, 2024 |
| 40-17G | Filing | Aug 28, 2024 | — |
| 4 | Insider transaction | Aug 26, 2024 | Aug 22, 2024 |
| 4 | Insider transaction | Aug 26, 2024 | Aug 22, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 16, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 16, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 12, 2024 | Aug 6, 2024 |
| 4 | Insider transaction | Aug 12, 2024 | Aug 8, 2024 |
| 10-Q | Quarterly report | Aug 5, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2024 | Aug 5, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2024 | Aug 5, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 2, 2024 | Jul 2, 2024 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Jun 13, 2024 | Jun 7, 2024 |
| 4 | Insider transaction | Jun 11, 2024 | Jun 11, 2021 |
| 4 | Insider transaction | Jun 11, 2024 | Jun 7, 2024 |
| 4 | Insider transaction | Jun 5, 2024 | Jun 3, 2024 |
| 4 | Insider transaction | Jun 5, 2024 | Jun 3, 2024 |
| 4 | Insider transaction | Jun 5, 2024 | Jun 3, 2024 |
| POS 8C | Filing | Jun 3, 2024 | — |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Jun 3, 2024 | Jun 3, 2024 |
| 425 | Filing | May 29, 2024 | — |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
May 29, 2024 | May 29, 2024 |
| 425 | Filing | May 10, 2024 | — |
| 425 | Filing | May 8, 2024 | — |
| 10-Q | Quarterly report | May 6, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 6, 2024 | May 6, 2024 |
| 8-K |
Current report
Results of operations
|
May 6, 2024 | May 6, 2024 |
| 425 | Filing | Apr 30, 2024 | — |
| 8-K |
Current report
Results of operations
|
Apr 22, 2024 | Apr 22, 2024 |
| 425 | Filing | Apr 18, 2024 | — |
| CORRESP | Letter to the SEC | Apr 17, 2024 | — |
| EFFECT | Filing | Apr 15, 2024 | — |
| 424B3 | Prospectus | Apr 15, 2024 | — |
| N-14 8C/A | Filing | Apr 12, 2024 | — |
| 8-K |
Current report
Results of operations
|
Apr 4, 2024 | Apr 4, 2024 |
| N-23C-2 | Filing | Mar 8, 2024 | Mar 8, 2024 |
| 8-K |
Current report
Other events
|
Mar 8, 2024 | Mar 8, 2024 |
| N-14 8C | N-14 | Feb 23, 2024 | — |
| APP ORDR | Filing | Feb 22, 2024 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 15, 2024 | — |
| 425 | Filing | Feb 9, 2024 | — |
| 425 | Filing | Feb 9, 2024 | — |
| 425 | Filing | Feb 8, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
Feb 6, 2024 | Feb 2, 2024 |
| 425 | Filing | Feb 5, 2024 | — |
| 10-Q | Quarterly report | Feb 5, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2024 | Feb 5, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2024 | Feb 5, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Feb 1, 2024 | Jan 29, 2024 |
| 424B2 | Prospectus | Jan 30, 2024 | — |
| 497AD | Filing | Jan 30, 2024 | — |
| 497AD | Filing | Jan 30, 2024 | — |
| 497AD | Filing | Jan 29, 2024 | — |
| FWP | Free writing prospectus | Jan 29, 2024 | — |
| 424B2 | Prospectus | Jan 29, 2024 | — |
| 497AD | Filing | Jan 26, 2024 | — |
| APP NTC | Filing | Jan 25, 2024 | — |
| 425 | Filing | Jan 19, 2024 | — |
| 425 | Filing | Jan 17, 2024 | — |
| 425 | Filing | Jan 17, 2024 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jan 17, 2024 | Jan 16, 2024 |
| 8-K |
Current report
Results of operations
|
Jan 17, 2024 | Jan 17, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 11, 2024 | — |
| 8-K |
Current report
Results of operations
|
Jan 4, 2024 | Jan 4, 2024 |
| DEFA14A | Additional proxy material | Dec 15, 2023 | — |
| DEF 14A | Proxy statement | Dec 15, 2023 | Feb 2, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 5, 2023 | Nov 30, 2023 |
| 424B2 | Prospectus | Dec 1, 2023 | — |
| 497AD | Filing | Nov 30, 2023 | — |
| 497AD | Filing | Nov 30, 2023 | — |
| FWP | Free writing prospectus | Nov 30, 2023 | — |
| 424B2 | Prospectus | Nov 30, 2023 | — |
| 497AD | Filing | Nov 28, 2023 | — |
| 8-K |
Current report
Results of operations
|
Nov 20, 2023 | Nov 20, 2023 |
| 10-K | Annual report | Nov 20, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 20, 2023 | Nov 20, 2023 |
| 8-K |
Current report
Results of operations
|
Oct 17, 2023 | Oct 17, 2023 |
| 8-K |
Current report
Material agreement
|
Oct 10, 2023 | Oct 6, 2023 |
| 424B3 | Prospectus | Oct 10, 2023 | — |
| 8-K |
Current report
Results of operations
|
Oct 5, 2023 | Oct 5, 2023 |
| 40-17G | Filing | Aug 28, 2023 | — |
| 10-Q | Quarterly report | Aug 7, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2023 | Aug 7, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 7, 2023 | Aug 7, 2023 |
| 40-APP/A | Filing | Jul 26, 2023 | — |
| 8-K |
Current report
Results of operations
|
Jul 11, 2023 | Jul 11, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 6, 2023 | Jul 6, 2023 |
| 8-K |
Current report
Material agreement
|
Jun 30, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | May 30, 2023 | May 25, 2023 |
| 8-K |
Current report
Results of operations
|
May 8, 2023 | May 8, 2023 |
| 8-K |
Current report
Results of operations
|
May 8, 2023 | May 8, 2023 |
| 10-Q | Quarterly report | May 8, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
Apr 10, 2023 | Apr 10, 2023 |
| 8-K |
Current report
Results of operations
|
Apr 6, 2023 | Apr 6, 2023 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Listed as
- GBDC (Nasdaq)
- Fiscal year ends
- September 30
- Incorporated in
- DE
- Headquarters
- New York, NY
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1476765
- Former names
- GOLUB CAPITAL INVESTMENT Corp (until Jun 2, 2017); Golub Capital BDC LLC (until Apr 14, 2010)
Source: SEC EDGAR filings. This is company-reported data, not investment advice.