Transaction · 0000354190-26-000199

Bay Walter D.

Bay Walter D., GC, reported an open-market or private sale at Arthur J. Gallagher & Co. involving 12000.000000 shares for an estimated $3240972.00. Reported holdings after the transaction were 71292.092000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SGC
AJGArthur J. Gallagher & Co.
Filing timeAug 26
Trade dateAug 24, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
Pre-filing
Returns since

AJG price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
AJG since 2026-08-26Filed 9 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0000354190-26-000199
Common Stock
Transaction date
Aug 24, 2026
Filed Aug 26, 2026, 11:34 PM · 2d delay
Shares
12.0k sh
$27.0k per share
Estimated value
-$324M
Computed from shares × price
Holdings after
71.2k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Direct Ownership Large Sale
+10score
Filing-only score

+10

Compact filing score computed from stored Form 4 facts. Version v1.

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

General Counsel

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    The price reported is an average weighted price. The shares were sold in multiple transactions on 8/24/2026 at prices ranging from $270.01 to $270.17. The reporting person will provide to the Securiti…

  2. F2

    One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

  3. F3F5F6(3 footnotes)

    One-third of this stock option becomes exercisable on each of the 3rd, 4th, and 5th anniversaries of the grant date.

  4. F4

    Closing price of Gallagher common stock on February 28, 2025.

  5. F7

    Each notional stock unit represents a right to receive one share of Gallagher common stock.

  6. F8

    The notional stock units become payable in July 2026 and following the reporting person's separation from service with Gallagher.

  7. F9

    Each share of phantom stock represents a right to receive one share of Gallagher common stock.

  8. F10

    These shares represent awards under the Age 62 Plan, a nonqualified deferred compensation plan of the Company, which have been deemed invested in Company common stock at the election of the reporting…

Original filing · 0000354190-26-000199
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