OTHER INFORMATION
−Removed: The information set forth below is included herein for purposes of providing disclosure under Form 8-K.
−Removed: Item 5.02 Departure of Directors or Certain Officers;
−Removed: Election of Directors;
−Removed: Appointment of Certain Officers;
−Removed: Compensatory Arrangements of Certain Officers
−Removed: On November 4, 2025, A.G.W.
−Removed: “Jack” Biddle, III notified us he would be resigning from the Board of Directors (the “Board”) and the Audit Committee effective as of January 24, 2026.
−Removed: Biddle informed us that his decision to resign as a director was not due to any disagreements with the Company or the Board.
+Added: Rule 10b5-1 Trading Plans
+Added: The adoption or termination of contracts, instructions, or written plans for the purchase or sale of our securities by our Section 16 officers and directors for the three months ended March 31, 2026 , each of which is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act (“Rule 10b5-1 Plan”), were as follows:
+Added: Name Title Action Date Adopted Expiration Date Aggregate # of Securities to be Purchased/Sold
+Added: Matthew Calkins (1)
+Added: Chief Executive Officer and Chairman of the Board
+Added: Adoption 03/5/2026 5/28/2027 600,000
+Added: (1) Matthew Calkins, Chief Executive Officer and Chairman of the Board of Directors, entered into a prearranged stock trading plan pursuant to Rule 10b5-1 on March 5, 2026.
+Added: Calkins’ plan provides for the potential sale of up to 600,000 shares of Appian Class A common stock.
+Added: The plan commences on June 8, 2026 and expires on the earlier of the completion of all authorized transactions under the plan or May 28, 2027.
+Added: O ther than disclosed above, none of our directors or officers adopted or terminated a "non-Rule 10b5-1 trading arrangement" as defined in Item 408 of Regulation S-K.
Description Reference
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Previously filed as Exhibit 4.1 to Amendment No.3 to the Registrant’s Registration Statement on Form S-1 (File No.333-217510), filed with the Securities and Exchange Commission on May 12, 2017, and incorporated herein by reference.
−Removed: 10.1 Seventh Amendment to Credit Agreement, dated as of September 3, 2025, by and among Appian Corporation, Silicon Valley Bank, a division of First-Citizens Bank & Trust Company, Wells Fargo Bank, N.A., Comerica Bank, MUFG Bank, Ltd., Customers Bank, The Toronto-Dominion Bank, New York Branch, and The Bank of Nova Scotia.
+Added: 10.1 Eighth Amendment to Credit Agreement, dated as of February 18, 2026, by and among Appian Corporation, Silicon Valley Bank, a division of First-Citizens Bank & Trust Company, Wells Fargo Bank, N.A., Comerica Bank, MUFG Bank, Ltd., Customers Bank, The Toronto-Dominion Bank, New York Branch, and The Bank of Nova Scotia.
Filed herewith.
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APPIAN CORPORATION
−Removed: November 6, 2025 By:
+Added: May 7, 2026 By:
/s/ Matthew Calkins /s/ Srdjan Tanjga
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Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.