Artiva (ARTV) CMO Subhashis Banerjee Sells Shares, Exercises Options

What Happened

• Subhashis Banerjee, Chief Medical Officer of Artiva Biotherapeutics (ARTV), exercised stock options to acquire 5,306 shares at $1.92 per share (cost = $10,188) and, on the same day, sold 8,222 shares in an open-market transaction at an average price of about $12.01 per share (gross proceeds ≈ $98,736). The Form 4 also reports a derivative disposition of 5,306 shares at $0 on the same date; the filing does not provide further detail on the mechanics of that $0 disposition.

Key Details

• Transaction date: 2026-08-27; Form 4 filed: 2026-08-31 (timely within required business days).
• Option exercise (M): acquired 5,306 shares at $1.92 each (total $10,188).
• Open-market sale (S): 8,222 shares sold; weighted average sale price $12.0087; reported price range $12.00–$12.05; gross proceeds ≈ $98,736.
• Derivative entry (M): 5,306 shares reported disposed at $0 (no proceeds shown); filing gives no additional explanation for the $0 amount.
• Transactions were made pursuant to a Rule 10b5-1 trading plan adopted by Banerjee on May 14, 2026 (footnote F1).
• Vesting note: 25% of the option shares vested April 8, 2026; remaining shares vest monthly at 1/36th over the next 36 months (footnote F3).
• Shares owned after the transactions: not specified in the provided filing excerpt.

Context

• The filing shows an option exercise and same-day open-market sales under a pre-established 10b5-1 plan; the document does not state whether shares were sold to cover exercise costs, tax withholding, or for other reasons. Purchases (option exercise) indicate acquisition at a low exercise price, while the open-market sale realized proceeds at the then-market price.