Mullen Joyce A 4

What Happened

• Joyce A. Mullen, Chief Executive Officer of Insight Enterprises, Inc. (NSIT), had multiple restricted stock unit (RSU) vesting/conversion events on February 20, 2026. A total of 23,739 RSU-derived shares were converted (reported as exercise/conversion, code M at $0.00), and the company withheld 8,305 whole shares to satisfy minimum statutory tax withholding obligations (reported as dispositions, code F at $85.50 per share), generating approximately $710,079 in withholding value.

Key Details

• Transaction date: February 20, 2026; Form 4 filed February 24, 2026 (filed within the normal 2-business-day window).
• Conversion (acquired): 23,739 shares (six separate derivative conversion entries at $0.00).
• Withheld/disposed for taxes: 8,305 shares at $85.50 = $710,079 total (sum of individual withholding amounts: $68,999; $144,410; $83,277; $167,751; $50,873; $194,769).
• Shares owned after the transaction: not specified in the provided filing details.
• Relevant footnotes: F1 (company withheld whole shares for tax withholding); F2–F8 explain these were restricted stock units (one RSU = one share), granted in prior years with performance adjustments and multi-year vesting schedules (grants dated Feb 20, 2023–2025 with staggered vesting).
• Transaction codes: M = exercise/conversion of derivative (RSU settlement); F = payment of exercise price/tax liability (shares withheld).

Context

• This was not an open-market sale or purchase — it was the standard settlement of vested RSUs where the company converted RSUs into shares and retained a portion to cover taxes (a cashless/withholding settlement). Such withholdings are routine and reflect tax obligations rather than an affirmative sale decision by the insider.
• No 10b5-1 plan or other trading plan was disclosed in the provided details. The filing appears timely.