Appian Corp SEC filings APPN
Appian Corp has 992 filings in SEC EDGAR's recent list, going back to Jul 30, 2008. Its latest annual report, Form ARS, was filed on Apr 22, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 5, 2026 | Nov 3, 2026 |
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2026 | — |
| 4 | Insider transaction | Oct 8, 2026 | Oct 7, 2026 |
| 144 | Notice of proposed sale | Oct 7, 2026 | — |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Aug 11, 2026 | Aug 7, 2026 |
| 144 | Notice of proposed sale | Aug 7, 2026 | — |
| 4 | Insider transaction | Aug 6, 2026 | Aug 4, 2026 |
| 4 | Insider transaction | Aug 6, 2026 | Aug 5, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Jul 8, 2026 | Jul 7, 2026 |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 30, 2026 | — |
| S-8 | Employee stock plan registration | Jun 18, 2026 | — |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 13, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
May 7, 2026 | May 7, 2026 |
| ARS | Annual report to shareholders | Apr 22, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 22, 2026 | — |
| DEF 14A | Proxy statement | Apr 22, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Apr 10, 2026 | Apr 10, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Aug 20, 2025 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 5, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Mar 3, 2026 |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 26, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 24, 2026 | — |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 18, 2026 |
| 10-K | Annual report | Feb 19, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Feb 19, 2026 | Feb 19, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Feb 5, 2026 | — |
| 4 | Insider transaction | Feb 4, 2026 | Feb 4, 2026 |
| 3 | Initial insider ownership | Feb 4, 2026 | Jan 25, 2026 |
| SCHEDULE 13D | Ownership over 5% (active) | Jan 27, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Jan 21, 2026 | Jan 21, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 4, 2025 |
| 4 | Insider transaction | Nov 6, 2025 | Nov 5, 2025 |
| 4 | Insider transaction | Nov 6, 2025 | Nov 5, 2025 |
| 4 | Insider transaction | Nov 6, 2025 | Nov 4, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2025 | — |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 8-K |
Current report
Officer or director change
|
Oct 2, 2025 | Sep 29, 2025 |
| 8-K |
Current report
Other events
|
Aug 29, 2025 | Aug 29, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 27, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 14, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 11, 2025 | — |
| 4 | Insider transaction | Aug 8, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Aug 7, 2025 | Aug 5, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Jul 29, 2025 | Jul 25, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 25, 2025 | — |
| 4 | Insider transaction | Jul 24, 2025 | Jul 22, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 22, 2025 | — |
| 4 | Insider transaction | Jul 21, 2025 | Jul 17, 2025 |
| 4 | Insider transaction | Jul 16, 2025 | Jul 14, 2025 |
| 4 | Insider transaction | Jul 11, 2025 | Jul 9, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 9, 2025 | — |
| 4 | Insider transaction | Jul 8, 2025 | Jul 3, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 9, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 10, 2025 | — |
| 4 | Insider transaction | Jun 9, 2025 | Jun 9, 2025 |
| 4 | Insider transaction | Jun 6, 2025 | Jun 4, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 3, 2025 | — |
| 3 | Initial insider ownership | Jun 3, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 29, 2025 | May 27, 2025 |
| 8-K |
Current report
Other events
|
May 28, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 20, 2025 | — |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 12, 2025 | May 8, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| 4 | Insider transaction | May 7, 2025 | May 5, 2025 |
| 4 | Insider transaction | May 7, 2025 | May 5, 2025 |
| ARS | Annual report to shareholders | Apr 23, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 23, 2025 | — |
| DEF 14A | Proxy statement | Apr 23, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Officer or director change
|
Apr 21, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 16, 2025 | Apr 14, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 15, 2025 | — |
| 4 | Insider transaction | Apr 11, 2025 | Apr 9, 2025 |
| 4 | Insider transaction | Apr 4, 2025 | Apr 2, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 8-K |
Current report
Other events
|
Mar 7, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Feb 24, 2025 | Feb 24, 2025 |
| 10-K | Annual report | Feb 19, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2025 | Feb 19, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| 4 | Insider transaction | Feb 13, 2025 | Feb 11, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 7, 2025 | — |
| 4/A | Form 4/a | Jan 10, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Dec 3, 2024 | Dec 3, 2024 |
| 144 | Notice of proposed sale | Dec 2, 2024 | — |
| 3 | Initial insider ownership | Nov 13, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 13, 2024 | Nov 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 2024 | — |
| 4/A | Form 4/a | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 3 | Initial insider ownership | Nov 7, 2024 | Nov 5, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 6, 2024 | — |
| 8-K |
Current report
Officer or director change, Other events
|
Oct 11, 2024 | Oct 11, 2024 |
| 4 | Insider transaction | Oct 7, 2024 | Oct 7, 2024 |
| 3 | Initial insider ownership | Oct 7, 2024 | Sep 25, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Officer or director change, Other events
|
Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Sep 30, 2024 | — |
| 4 | Insider transaction | Sep 25, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 20, 2024 | Sep 18, 2024 |
| 4 | Insider transaction | Sep 17, 2024 | Sep 13, 2024 |
| 4 | Insider transaction | Sep 12, 2024 | Sep 10, 2024 |
| 4 | Insider transaction | Sep 12, 2024 | Sep 10, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 5, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Sep 4, 2024 | Aug 30, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 27, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 26, 2024 | — |
| 4 | Insider transaction | Aug 26, 2024 | Aug 22, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 14, 2024 |
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
- Industry
- Services-Prepackaged Software (SIC 7372)
- Listed as
- APPN (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Mclean, VA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1441683
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.