Calkins Matthew W 4

What Happened

• Matthew W. Calkins, a reported 10% owner of Appian Corp (APPN), had 64,375 Restricted Stock Units (RSUs) convert into Class A common shares on March 3, 2026. To cover tax and related obligations, 23,558 of those shares were withheld/disposed at $27.34 per share, representing $644,076. The Form 4 also includes a technical disposal line for 64,375 shares related to the conversion (see footnotes).

Key Details

• Date: March 3, 2026
• Primary actions and codes: M = conversion/exercise of RSUs (64,375 shares acquired via conversion); F = tax withholding/payment (23,558 shares disposed at $27.34/share for $644,076)
• Footnotes: RSUs convert one-for-one into Class A common stock; each RSU is a contingent right to one share (or cash equivalent); the RSUs were granted Feb 26, 2026 and vested immediately.
• Shares owned after transaction: Not disclosed on the Form 4
• Filing timeliness: Reported on the same date (filed Mar 3, 2026)

Context

• This appears to be an administrative conversion of RSUs with a standard share-withholding to cover taxes (a cashless-type settlement), not an open-market sale. Such withholdings are routine and do not necessarily signal the insider’s view on the stock. As a 10% owner, Calkins is a significant shareholder; the transaction reflects compensation vesting and tax settlement rather than a discretionary sale.