Rubrik (RBRK) Director Yvonne Wassenaar Sells 721 Shares

What Happened
Yvonne Wassenaar, a director of Rubrik, reported an open-market sale of 721 shares on Sept 3, 2026 at $89.52 per share, yielding $64,544. The Form 4 also reports conversion activity involving 513 shares (recorded as conversion of a derivative security at $0.00), reflecting a non‑cash conversion of Class B common stock into Class A common stock as described in the company charter.

Key Details

• Transactions date: 2026-09-03.
• Sale: 721 shares sold at $89.52 each — total proceeds $64,544 (open-market sale, code S).
• Conversion: 513 shares converted (code C) at $0.00 — recorded as acquisition and a related derivative disposition in the filing; treated as a non‑cash conversion of Class B to Class A common stock per the issuer’s charter.
• Footnotes: Sale was executed under a Rule 10b5-1 trading plan adopted Dec 15, 2025 (F1). Footnote F2 explains Class B → Class A convertibility mechanics.
• Shares owned after the reported transactions: not specified in this Form 4.
• Filing timeliness: transaction and report date are the same (filed Sept 3, 2026), indicating a timely report.

Context
The sale was carried out under a prearranged 10b5-1 plan, which is a routine mechanism that schedules trades in advance and may reduce the interpretive value of the sale as a real‑time sentiment signal. The conversion entries reflect corporate conversion mechanics (Class B into Class A) and were recorded at $0 because no cash changed hands — common for share‑class conversions.