Bloom Mark H. 4

What Happened Mark H. Bloom, a Vice President at Arthur J. Gallagher & Co. (AJG), had 3,506 performance-based units convert to common stock on March 15, 2026. The filing shows an acquisition/conversion of 3,506 shares (code A/M) at $0.00 and a withholding of 793 shares (code F) to cover taxes, valued at $207.93 per share for a total tax withholding of $164,888. Net shares delivered to Bloom were 2,713 (3,506 vested − 793 withheld). This was not an open-market sale but a vesting/conversion event with tax withholding.

Key Details

• Transaction date: March 15, 2026; Form 4 filed March 17, 2026 (appears timely).
• Shares involved: 3,506 vested/converted; 793 shares withheld for taxes.
• Withholding price/value: $207.93 per share; total withheld value $164,888.
• Transaction codes on the Form 4: A = Award/Grant, M = Exercise/Conversion of derivative, F = Payment of exercise price or tax liability (withholding).
• Net shares received: 2,713. Total shares owned after the transaction not disclosed in the filing.
• Relevant footnote: F1 — these were performance share units awarded on March 15, 2023 that earned and vested on March 15, 2026.

Context This was a routine vesting/conversion of performance awards rather than a purchase or an open-market sale. The 793-share disposition is a tax withholding (common in equity vesting events) and does not necessarily indicate the insider is selling additional shares for cash. For retail investors, purchases generally carry clearer bullish signals than routine vesting events; this filing primarily documents compensation vesting and tax withholding.