Results of Operations and Financial Condition. On August 6, 2026 , Appian Corporation (the "Company") issued a press release announcing its financial results for the second quarter ended June 30, 2026, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Other Events. The Board of Directors has authorized a program to repurchase up to $50.0 million of Appian's common stock (the “Share Repurchase Program”), effective May 2026 through February 2028. The Share Repurchase Program does not obligate Appian to acquire any specific number of shares, and shares of common stock may be repurchased using a variety of methods, including privately negotiated and/or open market transactions, under plans complying with Rule 10b5-1 of the Exchange Act, as par…

Results of Operations and Financial Condition. On May 7, 2026 , Appian Corporation (the "Company") issued a press release announcing its financial results for the first quarter ended March 31, 2026, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Results of Operations and Financial Condition. On February 19, 2026 , Appian Corporation (the "Company") issued a press release announcing its financial results for the fourth quarter and year ended December 31, 2025, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Other Events. The Board of Directors has authorized a program to repurchase up to $50.0 million of Appian's common stock (the “Share Repurchase Program”), effective February 2026 through February 2028. The Share Repurchase Program does not obligate Appian to acquire any specific number of shares, and shares of common stock may be repurchased using a variety of methods, including privately negotiated and/or open market transactions, under plans complying with Rule 10b5-1 of the Exchange Act, a…

Director — David Link: David Link was appointed to the Board of Directors and will also serve on the Audit Committee.

Results of Operations and Financial Condition. On November 6, 2025 , Appian Corporation (the "Company") issued a press release announcing its financial results for the third quarter ended September 30, 2025, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

General Counsel and Secretary — Christopher Winters: Christopher Winters plans to retire, with a transition period and assistance in finding a successor.

Other Events. The Board of Directors of Appian Corporation (“Appian”) has authorized a program to repurchase up to $10.0 million of Appian's common stock (the “Share Repurchase Program”), effective immediately through August 28, 2027. The Share Repurchase Program does not obligate Appian to acquire any specific number of shares, and shares of common stock may be repurchased using a variety of methods, including privately negotiated and/or open market transactions, under plans complying with R…

Results of Operations and Financial Condition. On August 7, 2025 , Appian Corporation (the "Company") issued a press release announcing its financial results for the first quarter ended June 30, 2025, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Other Events. The Board of Directors of Appian Corporation ("Appian") has authorized a program to repurchase up to $10.0 million of Appian's common stock (the “Share Repurchase Program”), effective from May 2025 to December 31, 2025. The shares will be repurchased to offset shares that will be issued to employees who have elected to receive part or all their annual bonus in stock pursuant to a new employee compensation program. An additional amount is intended to cover new employee elections.…

Results of Operations and Financial Condition. On May 8, 2025 , Appian Corporation (the "Company") issued a press release announcing its financial results for the first quarter ended March 31, 2025, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Chief Financial Officer — Srdjan 'Serge' Tanjga: The company has hired a new Chief Financial Officer from outside the organization.

Forward-Looking Statements This Current Report on Form 8-K includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained herein other than statements of historical facts, including statements regarding the Company's ability to collect on the judgment, the outcome of any appeal, and the timing of such matters, are forward-looking statements. The words "anticipate," "believe," "continue," "estimate," "expect," "intend,"…

Results of Operations and Financial Condition. On February 19, 2025 , Appian Corporation (the "Company") issued a press release announcing its financial results for the fourth quarter and year ended December 31, 2024, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Results of Operations and Financial Condition. On November 7, 2024 , Appian Corporation (the "Company") issued a press release announcing its financial results for the third quarter ended September 30, 2024, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Chief Financial Officer — Mark Matheos: Mr. Matheos is leaving to pursue another opportunity as CFO at another company.

Other Events. Appointment of Mark Dorsey as Chief Revenue Officer In a press release dated October 11, 2024, the Company announced that effective October 21, 2024, Mark Dorsey will join the company as Chief Revenue Officer. Mr. Dorsey most recently was the SVP of Sales for the Americas at Alteryx from October 2023. Prior to Alteryx, Mr. Dorsey held two senior sales positions at Oracle from 2016 to 2023, including holding the position of Senior Vice President of Cloud Sales from 2019 through O…

Director — Carl “Boe” Hartman II: Appointment of a new independent director to the Board and Compensation Committee.

Results of Operations and Financial Condition. On August 1, 2024 , Appian Corporation (the "Company") issued a press release announcing its financial results for the second quarter ended June 30, 2024, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

Forward-Looking Statements This Current Report on Form 8-K includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained herein other than statements of historical facts, including statements regarding the Company's ability to collect on the judgment, the outcome of any appeal, and the timing of such matters, are forward-looking statements. The words "anticipate," "believe," "continue," "estimate," "expect," "intend,"…

Results of Operations and Financial Condition. On May 2, 2024 , Appian Corporation (the "Company") issued a press release announcing its financial results for the first quarter ended March 31, 2024, as well as information regarding a conference call to discuss these financial results and the Company's recent business highlights and financial outlook. The Company's press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information included in

of this Current Report on Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing. Caution Regarding Preliminary Estimates The foregoing preliminary financial inform…

Chief Revenue Officer — Christopher Jones: Christopher Jones is leaving the Company to take on an expanded role at a privately held software company.

of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing. Forward-Looking Statements This Current Report on Form 8-K includes forward-lookin…