Appian Corp SEC filings APPN
Appian Corp has 989 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 Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 6, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 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 |
| 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 | — |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 4 | Insider transaction | May 13, 2026 | May 13, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 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 |
| 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 | — |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 4 | Insider transaction | May 7, 2025 | May 5, 2025 |
| 4 | Insider transaction | May 7, 2025 | May 5, 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 |
| 4 | Insider transaction | Feb 24, 2025 | Feb 24, 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 |
| SC 13G | Ownership over 5% (passive) | Nov 6, 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 |
| 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 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 15, 2024 | — |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 9, 2024 | Aug 7, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 2, 2024 | — |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 26, 2024 | Jul 24, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 24, 2024 | — |
| 4 | Insider transaction | Jul 23, 2024 | Jul 19, 2024 |
| 4 | Insider transaction | Jul 18, 2024 | Jul 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 12, 2024 | — |
| 4 | Insider transaction | Jul 12, 2024 | Jul 10, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 9, 2024 | — |
| 4 | Insider transaction | Jul 9, 2024 | Jul 5, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jun 5, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 30, 2024 |
| 4 | Insider transaction | May 8, 2024 | May 6, 2024 |
| 4 | Insider transaction | May 7, 2024 | May 6, 2024 |
| 4 | Insider transaction | May 7, 2024 | May 6, 2024 |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| SC 13G | Ownership over 5% (passive) | Apr 15, 2024 | — |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 23, 2024 | — |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 4 | Insider transaction | Feb 14, 2024 | Feb 13, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 4/A | Form 4/a | Feb 7, 2024 | Dec 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.
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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.