DORSA CAROLINE 4

What Happened
Dorsa Caroline, a director of Illumina, received a grant of 2,072 restricted stock units (RSUs) on 2026-05-21 valued at $300,088 (2,072 shares × $144.83). The filing also shows a disposal of 1,512 shares on 2026-05-20 to satisfy a tax withholding/payment obligation, valued at $214,583 (1,512 shares × $141.92). The grant is a compensation award (not an open-market purchase).

Key Details

• Grant date and acquisition: 2026-05-21 — 2,072 RSUs at $144.83 each; aggregate reported value $300,088. (Transaction code A = Award/Grant)
• Tax withholding/disposition: 2026-05-20 — 1,512 shares disposed at $141.92 each; aggregate $214,583. (Transaction code F = payment of exercise price or tax liability via share withholding)
• Vesting note: Footnote indicates the RSUs vest 100% on the earlier of (i) one year after grant or (ii) the day before the next year’s annual meeting, subject to continued service.
• Shares owned after the transactions: not specified in the provided filing excerpt.
• Filing timeliness: Form 4 was filed 2026-05-22 (appears to be timely following the 5/20–5/21 transactions).

Context
RSU grants are compensation and do not represent an open‑market purchase; the withheld/disposed shares reflect routine tax withholding rather than a market sale. The award vests on a time-based schedule (subject to continued service), so the shares are not immediately free to trade until vested.