Patrick Murphy Gallagher, Chief Operating Officer of Arthur J. Gallagher & Co. (NYSE:AJG), filed a Form 4 on September 10, 2026, disclosing a change in beneficial ownership stemming from a transaction dated September 8, 2026.

Key Highlights

  • Gift transaction: 49,988 shares of common stock were acquired (transaction code G) at $0 price, representing a gift from the reporting person's father to an irrevocable trust of which the reporting person and his siblings are beneficiaries.
  • Trustee role: The reporting person is the acting trustee of the irrevocable trust that received the gifted shares, and disclaims beneficial ownership except to the extent of his pecuniary interest.
  • Indirect holdings following transaction: The filing reports 148,093.25 shares held indirectly by that trust, plus additional indirect holdings across multiple trusts and a 401(k) plan account.
  • Direct holdings: The reporting person directly holds 14,169.6426 shares of common stock.
  • Derivative securities: The filing lists non-qualified stock options with exercise prices ranging from $86.17 to $337.74, covering a combined total of 66,257 underlying shares of common stock.
  • Deferred compensation: The reporting person holds phantom stock and notional stock units under two nonqualified deferred compensation plans, totaling 17,731.211 and 3,804.562 phantom shares, and 2,351.803 notional stock units, respectively.

Patrick Murphy Gallagher's Ownership Changes at Arthur J. Gallagher & Co.

According to the filing, the sole reported transaction is coded "G," indicating a gift rather than a market sale or purchase. The filing states that the 49,988 shares represent "a gift from the reporting person's father to an irrevocable trust of which the reporting person and his siblings are beneficiaries, and the reporting person is the acting trustee." The price reported is $0. The reporting person disclaims beneficial ownership of those shares except to the extent of his pecuniary interest.

Beyond the gifted shares, the filing discloses a range of indirect holdings. Shares are held in several trusts benefiting the reporting person and immediate family members, in trusts of which his spouse is sole trustee, in a revocable and an irrevocable trust controlled by the spouse (as to which the reporting person also disclaims beneficial ownership), and in a Gallagher 401(k) plan account carrying 491.136 shares. A separate trust holds 55,109 shares described as an irrevocable trust.

In Table II, the filing discloses eight categories of derivative securities held directly. These include non-qualified stock options at six different exercise prices, with vesting schedules under which one-third of each option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the respective grant dates. Phantom stock under two deferred compensation plans - the Age 62 Plan and the Deferred Cash Participation Plan - is reported as deemed invested in company common stock at the reporting person's election. Notional stock units are payable following the reporting person's separation from service, according to the filing.

What Was Disclosed

The Form 4 discloses a single gift transaction on September 8, 2026, involving 49,988 shares transferred into an irrevocable trust, alongside a comprehensive snapshot of Patrick Murphy Gallagher's direct and indirect beneficial ownership of Arthur J. Gallagher & Co. common stock and derivative securities.