Scheiner Zachary 4

What Happened
Zachary Scheiner, a director of Nkarta, Inc. (NKTX), was granted a derivative award on 2026-06-10: an option covering 37,000 shares with an acquisition price reported as $0 (no cash paid at grant). This is a grant/award (A) of a stock option rather than an open-market purchase or sale; no underlying shares were issued or sold in this filing.

Key Details

• Transaction date: 2026-06-10; Form 4 filed 2026-06-11 (filed promptly the next day).
• Award: option to acquire 37,000 shares; reported acquisition price $0 (derivative award).
• Vesting: 100% vests on the earlier of (i) June 10, 2027 or (ii) the day before the Issuer’s first annual meeting after the grant. Vesting also accelerates upon a qualifying change in control or the reporting person’s death/disability. (Footnote F1)
• Beneficial ownership: Scheiner holds the option for the benefit of RA Capital Healthcare Fund, L.P. and RA Capital Nexus Fund, L.P.; he is obligated to turn over any net cash/stock on exercise to the Adviser to offset advisory fees and disclaims beneficial ownership of the option and underlying stock. (Footnote F2)
• Shares owned after transaction: not specified in the provided summary; beneficial ownership is disclaimed per footnote.

Context
This was a grant of an option award (derivative) — not an exercise or sale — so no immediate proceeds or share transfers occurred. Because Scheiner holds the option on behalf of RA Capital funds and disclaims beneficial ownership, the filing reflects an institutional arrangement rather than a personal investment decision. Grants are common for board compensation and may vest over time or on corporate events; they do not, by themselves, indicate the insider is buying or selling stock in the open market.