Calkins Matthew W 4

What Happened
Matthew W. Calkins, a 10% owner of Appian Corp (APPN), sold 50,000 shares in an open-market/private sale on June 8, 2026. The reported weighted-average price was $24.13, for a total of approximately $1,206,500. This was a sale (not a purchase), which is often routine rather than a direct vote on company prospects.

Key Details

• Transaction date: 2026-06-08; Filing date: 2026-06-10 (filed two days after the trade).
• Price: weighted average $24.13; individual trade prices ranged from $23.81 to $24.24.
• Total proceeds: ~$1,206,500 for 50,000 shares.
• Shares owned after the transaction: Not specified in the provided filing summary.
• Footnotes: Sale occurred automatically under a Rule 10b5-1 trading plan adopted by Mr. Calkins on March 5, 2026. The filing notes the weighted-average price and offers to provide a per-price breakdown on request.
• Insider status: Reporting person is a 10% owner (not necessarily an executive), which is a significant ownership category under SEC rules.

Context
Sales under pre-established 10b5-1 plans are common and generally indicate pre-planned dispositions rather than immediate reactions to news. For retail investors, purchases typically carry more informational weight than scheduled sales; this filing documents a planned liquidation by a major shareholder. Accession: 0001309192-26-000006.