AJG
Arthur J. Gallagher & Co.
Insurance Agents, Brokers & ServiceNYSELarge accelerated filer
Total Trades
116
Buys
3
Sells
70
Largest Trade
N/A
Insiders
16
Institutional Funds
1,163
Inst. Value
$1M+
Activist Filings
9
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Bay Walter D. | General Counsel | SELL | $1M+ | 10K | $183.00 | Aug 11, 2022 |
| Ziebell William F | VICE PRESIDENT | SELL | $1M+ | 29K | $149.27 | Jun 21, 2022 |
| Ziebell William F | VICE PRESIDENT | EXERCISE | $1M+ | 29K | $62.49 | Jun 21, 2022 |
| Pietrucha Susan E | CHRO | EXERCISE | $100K–$500K | 5K | $43.71 | Jun 9, 2022 |
| Pietrucha Susan E | CHRO | SELL | $500K+ | 5K | $162.04 | Jun 9, 2022 |
| Bay Walter D. | General Counsel | EXERCISE | $100K–$500K | 34K | $9.79 | Mar 17, 2022 |
| Bay Walter D. | General Counsel | SELL | $1M+ | 8K | $162.00 | Mar 17, 2022 |
| Bay Walter D. | General Counsel | GRANT | N/A | 8K | — | Mar 17, 2022 |
| HOWELL DOUGLAS K | CFO | SELL | $1M+ | 14K | $158.89 | Mar 12, 2022 |
| HOWELL DOUGLAS K | CFO | EXERCISE | $500K+ | 19K | $46.17 | Mar 12, 2022 |
| Hudson Scott R | Vice President | SELL | $1M+ | 43K | $158.03 | Mar 12, 2022 |
| Hudson Scott R | Vice President | EXERCISE | $1M+ | 43K | $46.17 | Mar 12, 2022 |
| GALLAGHER J PATRICK JR | President & CEO | SELL | $1M+ | 30K | $152.93 | Feb 25, 2022 |
| GALLAGHER J PATRICK JR | President & CEO | EXERCISE | $1M+ | 51K | $46.17 | Feb 25, 2022 |
| GALLAGHER THOMAS JOSEPH | VICE PRESIDENT | SELL | $1M+ | 37K | $153.24 | Feb 24, 2022 |
| GALLAGHER THOMAS JOSEPH | VICE PRESIDENT | EXERCISE | $1M+ | 37K | $45.50 | Feb 24, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 1,163 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Capital World Investors | 12.6M | $1M+ | SH |
| STATE STREET CORP | 11.0M | $1M+ | SH |
| NORGES BANK | 7.4M | $1M+ | SH |
| Capital International Investors | 6.3M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 5.2M | $1M+ | SH |
| Mitsubishi UFJ Asset Management Co., Ltd. | 3.1M | $1M+ | SH |
| WCM INVESTMENT MANAGEMENT, LLC | 2.4M | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1.1M | $1M+ | SH |
| Capital Research Global Investors | 1.5M | $1M+ | SH |
| ENVESTNET ASSET MANAGEMENT INC | 1.2M | $1M+ | SH |
| VIKING GLOBAL INVESTORS LP | 1.0M | $1M+ | SH |
| Findlay Park Partners LLP | 1.0M | $1M+ | SH |
| BROWN BROTHERS HARRIMAN & CO | 1.0M | $1M+ | SH |
| APG Asset Management N.V. | 1.2M | $1M+ | SH |
| DODGE & COX | 881K | $1M+ | SH |
| BECK MACK & OLIVER LLC | 879K | $1M+ | SH |
| Guinness Asset Management LTD | 806K | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 785K | $1M+ | SH |
| Swiss National Bank | 703K | $1M+ | SH |
| Stonehage Fleming Financial Services Holdings Ltd | 646K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G · Feb 13, 2026
5.0%
13.0M shares
SC 13G/A · Jul 16, 2025
6.9%
17.7M shares
SC 13G/A · Apr 22, 2025
6.7%
17.1M shares
SC 13G · Feb 10, 2025
5.0%
12.5M shares
SC 13G · Nov 12, 2024
5.6%
12.3M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
11.8%
25.6M shares
SC 13G · Jan 25, 2024
8.1%
17.4M shares
SC 13G/A · Feb 3, 2023
7.9%
16.7M shares
SC 13G/A · Jan 31, 2022
7.8%
16.3M shares