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 |
|---|---|---|---|
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| S-8 | Employee stock plan registration | Jun 18, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2026 | Jun 3, 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 |
| 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 |
| 8-K |
Current report
Officer or director change
|
Jan 21, 2026 | Jan 21, 2026 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 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 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2025 | Jun 4, 2025 |
| 8-K |
Current report
Other events
|
May 28, 2025 | May 27, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 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 |
| 8-K |
Current report
Other events
|
Mar 7, 2025 | Mar 7, 2025 |
| 10-K | Annual report | Feb 19, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2025 | Feb 19, 2025 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 8-K |
Current report
Officer or director change, Other events
|
Oct 11, 2024 | Oct 11, 2024 |
| 8-K |
Current report
Officer or director change, Other events
|
Oct 1, 2024 | Oct 1, 2024 |
| 10-Q | Quarterly report | Aug 1, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Other events
|
Jul 31, 2024 | Jul 31, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2024 | Jun 6, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 25, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 25, 2024 | — |
| DEF 14A | Proxy statement | Apr 25, 2024 | Apr 25, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 16, 2024 | Apr 16, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change, Other events
|
Mar 29, 2024 | Mar 29, 2024 |
| 8-K |
Current report
Other events
|
Mar 12, 2024 | Mar 12, 2024 |
| 10-K | Annual report | Feb 15, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 15, 2024 | Feb 15, 2024 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Material agreement
|
Sep 7, 2023 | Sep 7, 2023 |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 16, 2023 | Jun 16, 2023 |
| 10-Q | Quarterly report | May 9, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 9, 2023 | May 9, 2023 |
| ARS | Annual report to shareholders | Apr 28, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | — |
| 8-K |
Current report
Other events
|
Mar 29, 2023 | Mar 29, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 13, 2023 | Mar 13, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 17, 2023 | Feb 17, 2023 |
| 10-K | Annual report | Feb 16, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 16, 2023 | Feb 16, 2023 |
| 8-K |
Current report
Other events
|
Jan 23, 2023 | Jan 23, 2023 |
| 8-K |
Current report
Other events
|
Nov 14, 2022 | Nov 14, 2022 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2022 | Aug 4, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 10, 2022 | Jun 10, 2022 |
| DEFA14A | Additional proxy material | May 17, 2022 | — |
| 8-K |
Current report
Results of operations, Officer or director change, Other events
|
May 17, 2022 | May 17, 2022 |
| 8-K |
Current report
Other events
|
May 10, 2022 | May 10, 2022 |
| 10-Q | Quarterly report | May 5, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 5, 2022 | May 5, 2022 |
| DEFA14A | Additional proxy material | Apr 26, 2022 | — |
| DEF 14A | Proxy statement | Apr 26, 2022 | Apr 26, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 4, 2022 | Apr 4, 2022 |
| 10-K | Annual report | Feb 17, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2022 | Feb 17, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 4, 2022 | Jan 4, 2022 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Dec 7, 2021 | Dec 7, 2021 |
| 10-Q | Quarterly report | Nov 4, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2021 | Nov 4, 2021 |
| S-8 | Employee stock plan registration | Sep 2, 2021 | — |
| S-3ASR | Automatic shelf registration | Aug 18, 2021 | — |
| 10-Q | Quarterly report | Aug 5, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 16, 2021 | Jun 16, 2021 |
| DEFA14A | Additional proxy material | Jun 1, 2021 | — |
| 10-Q | Quarterly report | May 6, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 6, 2021 | May 6, 2021 |
| DEFA14A | Additional proxy material | Apr 29, 2021 | — |
| DEF 14A | Proxy statement | Apr 29, 2021 | Apr 29, 2021 |
| 10-K | Annual report | Feb 18, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 18, 2021 | Feb 18, 2021 |
| 10-Q | Quarterly report | Nov 5, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2020 | Nov 5, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 6, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2020 | Jun 12, 2020 |
| 8-K |
Current report
Other events
|
Jun 1, 2020 | Jun 1, 2020 |
| 424B5 | Prospectus supplement | Jun 1, 2020 | — |
| 424B5 | Prospectus supplement | May 28, 2020 | — |
| 10-Q | Quarterly report | May 7, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 7, 2020 | May 7, 2020 |
| DEFA14A | Additional proxy material | Apr 28, 2020 | — |
| DEF 14A | Proxy statement | Apr 28, 2020 | Apr 28, 2020 |
| 10-K | Annual report | Feb 20, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2020 | Feb 20, 2020 |
| 10-Q | Quarterly report | Oct 31, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2019 | Oct 31, 2019 |
| 8-K |
Current report
Other events
|
Sep 6, 2019 | Sep 4, 2019 |
| 424B5 | Prospectus supplement | Sep 6, 2019 | — |
| 424B5 | Prospectus supplement | Sep 4, 2019 | — |
| 10-Q | Quarterly report | Aug 8, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2019 | Aug 8, 2019 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2019 | Jun 6, 2019 |
| 8-K |
Current report
Officer or director change
|
May 24, 2019 | May 23, 2019 |
| 10-Q | Quarterly report | May 2, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 2, 2019 | May 2, 2019 |
| DEFA14A | Additional proxy material | Apr 26, 2019 | — |
| DEF 14A | Proxy statement | Apr 26, 2019 | Apr 26, 2019 |
| 10-K | Annual report | Feb 21, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2019 | Feb 21, 2019 |
| 8-K |
Current report
Change to shareholder rights, Officer or director change, Other events
|
Jan 2, 2019 | Jan 2, 2019 |
| 8-K |
Current report
Officer or director change
|
Dec 10, 2018 | Dec 10, 2018 |
| 10-Q | Quarterly report | Nov 1, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2018 | Nov 1, 2018 |
| 8-K |
Current report
Other events
|
Aug 22, 2018 | Aug 20, 2018 |
| 424B5 | Prospectus supplement | Aug 22, 2018 | — |
| 424B5 | Prospectus supplement | Aug 20, 2018 | — |
| S-3ASR | Automatic shelf registration | Aug 20, 2018 | — |
| 10-Q | Quarterly report | Aug 2, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2018 | Aug 2, 2018 |
| 8-K |
Current report
Shareholder vote results
|
Jun 7, 2018 | Jun 7, 2018 |
| 10-Q | Quarterly report | May 3, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
May 3, 2018 | May 3, 2018 |
| DEFA14A | Additional proxy material | Apr 27, 2018 | — |
| DEF 14A | Proxy statement | Apr 27, 2018 | Apr 27, 2018 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Apr 23, 2018 | Apr 17, 2018 |
| 10-K | Annual report | Feb 23, 2018 | Dec 31, 2017 |
| 8-K/A |
Amended current report
Results of operations
|
Feb 23, 2018 | Feb 22, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2018 | Feb 22, 2018 |
| 424B4 | Prospectus | Nov 16, 2017 | — |
| EFFECT | Filing | Nov 15, 2017 | — |
| CORRESP | Letter to the SEC | Nov 13, 2017 | — |
| CORRESP | Letter to the SEC | Nov 13, 2017 | — |
| S-1 | Registration statement | Nov 13, 2017 | — |
| CT ORDER | Filing | Nov 9, 2017 | — |
| UPLOAD | Letter from the SEC | Nov 8, 2017 | — |
| 10-Q | Quarterly report | Nov 2, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Material agreement, Agreement ended, Results of operations, New debt
|
Nov 2, 2017 | Nov 1, 2017 |
| DRS | Filing | Oct 31, 2017 | — |
| 10-Q | Quarterly report | Aug 3, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2017 | Aug 3, 2017 |
| 8-K |
Current report
Bylaw or fiscal year change
|
May 31, 2017 | May 31, 2017 |
| S-8 | Employee stock plan registration | May 30, 2017 | — |
| 424B4 | Prospectus | May 26, 2017 | — |
| CT ORDER | Filing | May 25, 2017 | — |
| EFFECT | Filing | May 24, 2017 | — |
| CERTNAS | Auto-generated paper document | May 24, 2017 | — |
| CORRESP | Letter to the SEC | May 22, 2017 | — |
| CORRESP | Letter to the SEC | May 22, 2017 | — |
| 8-A12B | Form 8-a12b | May 18, 2017 | — |
| S-1/A | Amended registration statement | May 12, 2017 | — |
| S-1/A | Amended registration statement | May 10, 2017 | — |
| S-1/A | Amended registration statement | May 8, 2017 | — |
| UPLOAD | Letter from the SEC | May 2, 2017 | — |
| S-1 | Registration statement | Apr 27, 2017 | — |
| DRSLTR | Filing | Apr 24, 2017 | — |
| DRS/A | Filing | Apr 24, 2017 | — |
| UPLOAD | Letter from the SEC | Apr 12, 2017 | — |
| DRS/A | Filing | Mar 30, 2017 | — |
| DRSLTR | Filing | Mar 29, 2017 | — |
| UPLOAD | Letter from the SEC | Mar 16, 2017 | — |
| DRS | Filing | Feb 17, 2017 | — |
| D | Filing | Mar 3, 2014 | — |
| REGDEX | Auto-generated paper document | Jul 30, 2008 | — |
Showing 179 filings. 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
- 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.