22 insiders reported 264 Form 4 transactions for Arthur J. Gallagher & Co. (AJG) over the past 18 months (most recent 2026-08-20). Recent activity: Mead Christopher E (VICE PRESIDENT) Sell 3,500 shares, Mead Christopher E (VICE PRESIDENT) Buy 3,500 shares, Bloom Mark H. (Vice President) Buy 1,280 shares, Bloom Mark H. (Vice President) Sell 607 shares, Gallagher Patrick Murphy (Chief Operating Officer) Sell 23,800 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | Mead Christopher E | VICE PRESIDENT | Sell | 3,500 | $899,587 |
| 2026-08-20 | Mead Christopher E | VICE PRESIDENT | Buy | 3,500 | $301,595 |
| 2026-08-18 | Bloom Mark H. | Vice President | Buy | 1,280 | $0 |
| 2026-08-18 | Bloom Mark H. | Vice President | Sell | 607 | $152,438 |
| 2026-08-07 | Gallagher Patrick Murphy | Chief Operating Officer | Sell | 23,800 | $0 |
| 2026-07-06 | Pesch Michael Robert | Vice President | Buy | 356 | $81,681 |
| 2026-07-06 | Jain Vishal | VICE PRESIDENT | Buy | 2,163 | $496,490 |
| 2026-07-06 | GALLAGHER THOMAS JOSEPH | President | Buy | 352 | $80,796 |
| 2026-06-02 | CARY RICHARD C | Controller, CAO | Sell | 3,000 | $618,000 |
| 2026-06-02 | JOHNSON DAVID S | Director | Buy | 237 | $48,750 |
| 2026-06-02 | Miskel Christopher C. | Director | Buy | 194 | $40,000 |
| 2026-05-28 | GALLAGHER J PATRICK JR | CEO | Sell | 14,698 | $0 |
| 2026-05-28 | Gallagher Patrick Murphy | Chief Operating Officer | Buy | 14,698 | $0 |
| 2026-05-13 | Clarke Teresa Hillary | Director | Buy | 1,110 | $0 |
| 2026-05-13 | ROSENTHAL NORMAN L | Director | Buy | 1,110 | $0 |
| 2026-05-13 | JOHNSON DAVID S | Director | Buy | 1,110 | $0 |
| 2026-05-13 | NICOLETTI RALPH J | Director | Buy | 1,110 | $0 |
| 2026-05-13 | Caplan Deborah H | Director | Buy | 1,110 | $0 |
| 2026-05-13 | Coldman David John | Director | Buy | 1,110 | $0 |
| 2026-05-13 | Miskel Christopher C. | Director | Buy | 1,110 | $0 |
| 2026-05-13 | Harries Richard de Winton Wilkin | Director | Buy | 1,110 | $0 |
| 2026-04-02 | Ziebell William F | VICE PRESIDENT | Buy | 51 | $10,996 |
| 2026-04-02 | HOWELL DOUGLAS K | VP & Chief Financial Officer | Buy | 76 | $16,495 |
| 2026-04-02 | Hudson Scott R | Vice President | Buy | 64 | $13,745 |
| 2026-04-02 | GALLAGHER THOMAS JOSEPH | President | Buy | 76 | $16,495 |
Source: SEC Form 4 filings · as of 2026-08-20