Bloss Jeffrey D. 4

What Happened

• Jeffrey D. Bloss, Chief Medical Officer of NuCana plc (NCNA), recorded a disposition to the issuer on June 19, 2026 consisting of a partial cancellation of 36,539,720 option shares. The filing shows $0.00 per share and $0 total proceeds — the options were canceled, not sold or exercised for cash.

Key Details

• Transaction date: June 19, 2026; Form 4 filed June 23, 2026 (within the typical two-business-day reporting window).
• Disposition: 36,539,720 option shares canceled; reported price $0.00; proceeds $0.
• Shares owned after transaction: Not specified in the filing.
• Footnote highlights:
  • The canceled options were part of a grant of 146,158,880 options that vested 25% on June 20, 2026 and had an exercise price of £0.0004 per share. (F2)
  • The remaining 109,619,160 options are scheduled to vest in three equal annual installments thereafter and will expire June 20, 2035. (F2, F3)
  • The option cancellation was by mutual agreement between Mr. Bloss and the company; the Reporting Person received no consideration for the cancellation. (F4)
• Transaction code: D (disposition to issuer) with footnote indicating partial cancellation of vested options. (F1)

Context

• This was a derivative transaction (options canceled), not an open-market sale or purchase. Because no cash changed hands, the cancellation does not directly indicate buying or selling sentiment.
• For options-related filings, note whether options were exercised and shares sold immediately (cashless exercise). In this case, the options were canceled by agreement and not exercised for proceeds.