Warner Mark Andrew 4

What Happened

• Mark Andrew Warner, Chief Accounting Officer and Controller of SEI Investments (SEIC), exercised stock option(s) and completed related share sales on April 28, 2026. The filing shows 8,000 shares involved in derivative exercises: 4,000 shares were recorded as acquired upon exercise at $48.47 ($193,880 total), and 4,000 shares were sold in the open market at $91.16 for $364,640. Footnote F1 indicates the equity was received as employment compensation.

Key Details

• Transaction date: 2026-04-28.
• Exercise: 4,000 shares acquired at $48.47 (total exercise cost/value shown $193,880); two additional 2,000-share derivative disposals are listed (N/A price) consistent with option/derivative settlement mechanics.
• Sale: 4,000 shares sold open market at $91.16, proceeds $364,640.
• Footnote: F1 — received as employment compensation.
• Shares owned after the transactions: not specified in the provided filing details.
• Filing timeliness: Form filed 2026-04-30 for transactions dated 2026-04-28 (filed within the typical two-business-day window).

Context

• The pattern — exercise of options followed by an immediate market sale of some shares — is common when insiders exercise compensation awards and sell part of the shares to cover exercise costs, taxes, or to realize gains. The two 2,000-share derivative disposals shown with N/A price often reflect shares withheld or surrendered to cover taxes/exercise costs, though the filing does not state the exact mechanism. This activity is a mix of exercising compensation and selling shares rather than a straightforward purchase signal.