SEI (SEIC) CAO Mark Warner Exercises Options and Sells Shares

What Happened
Mark Andrew Warner, Chief Accounting Officer and Controller of SEI Investments Company (SEIC), exercised 15,000 stock options on July 28, 2026 and sold 15,000 shares the same day. The option exercises show four lots: two lots of 2,500 shares at $64.43 and two lots of 5,000 shares at $56.54, for a total exercise cost of $887,550. On the same date he sold three open-market lots (2,300; 5,300; 7,400 shares) for aggregate cash proceeds of approximately $1,535,193. The filing also reports related derivative dispositions of 15,000 shares with no price (N/A), which commonly indicate shares were withheld to cover taxes or exercise costs.

Key Details

• Transaction date: July 28, 2026; Form filed July 30, 2026 (timely).
• Options exercised: 2 × 2,500 shares @ $64.43 and 2 × 5,000 shares @ $56.54 — total acquired via exercise = 15,000 shares; total exercise cost = $887,550.
• Open-market sales: 2,300 shares @ $101.11 (≈ $232,542) [F1], 5,300 shares @ $102.01 (≈ $540,658) [F2], 7,400 shares @ $102.97 (≈ $761,993) [F3]; total proceeds ≈ $1,535,193. Footnotes F1–F3 indicate those prices are weighted averages over small price ranges.
• Additional derivative dispositions: 2 × 2,500 and 2 × 5,000 shares listed as "Disposed" with price N/A (total 15,000) — typically reflect shares withheld in connection with the exercise.
• F4 notes the underlying awards were received as employment compensation.
• Shares owned after the reported transactions: not stated in the provided data.

Context

• This pattern (exercise of options followed same-day by open-market sales) is a common cashless or partial cash exercise and sell-to-cover approach — it converts option value to cash while satisfying exercise/tax obligations.
• Sales by executives are routine and do not by themselves indicate company performance; purchases are generally more informative about insider sentiment.