Arthur J. Gallagher & Co.
US ˙ NYSE ˙ US3635761097

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionArgent Trust Co
Latest Disclosed Ownership4,004 shares
Latest Disclosed Value $ 867,188
Argent Trust Co reports 1.55% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 13, 2026 - Argent Trust Co filed a 13F-HR form disclosing ownership of 4,004 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $867,186 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 4,067 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -1.55% during the quarter. The current value of the position is $810,810 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,004 -63 -1.55 867 -17.59 0.0115
2026-02-10 2025-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,067 -190 -4.46 1,052 -20.18 0.0361
2025-11-12 2025-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,257 -963 -18.45 1,319 -21.13 0.0467
2025-08-12 2025-06-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 5,220 642 14.02 1,671 5.76 0.0631
2025-05-09 2025-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,578 -265 -5.47 1,581 14.99 0.0649
2025-02-13 2024-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,843 606 14.30 1,375 15.27 0.0560
2024-11-13 2024-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,237 631 17.50 1,192 27.49 0.0494
2024-08-12 2024-06-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,606 -23 -0.63 935 3.09 0.0412
2024-05-10 2024-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,629 -220 -5.72 907 4.86 0.0408
2024-02-09 2023-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,849 183 4.99 866 3.59 0.0431
2023-11-08 2023-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,666 -58 -1.56 836 2.20 0.0458
2023-08-11 2023-06-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,724 -70 -1.85 818 12.69 0.0443
2023-05-12 2023-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,794 977 34.68 726 36.53 0.0460
2023-02-10 2022-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 2,817 0 0.00 531 9.94 0.0351
2022-11-10 2022-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 2,817 -29 -1.02 483 4.09 0.0350
2022-08-11 2022-06-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 2,846 -989 -25.79 464 -30.64 0.0318
2022-05-11 2022-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,835 0 0.00 669 2.76 0.0408
2022-02-09 2021-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,835 -513 -11.80 651 0.62 0.0381
2021-11-09 2021-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,348 974 28.87 647 37.08 0.0416
2021-08-09 2021-06-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,374 445 15.19 472 29.32 0.0310
2021-05-12 2021-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 2,929 -97 -3.21 365 -2.41 0.0257
2021-02-11 2020-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,026 0 0.00 374 16.88 0.0289
2020-11-13 2020-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,026 -1,335 -30.61 320 -24.88 0.0282
2020-08-04 2020-06-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,361 -437 -9.11 426 8.95 0.0399
2020-05-11 2020-03-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 4,798 1,091 29.43 391 10.76 0.0439
2020-02-11 2019-12-31 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 3,707 989 36.39 353 45.27 0.0314
2019-11-12 2019-09-30 13F ARTHUR J GALLAGHER COMMON STOCK 363576109 2,718 2,718 243 0.0234
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.