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

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionDiversified Trust Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Diversified Trust Co closes position in AJG / Arthur J. Gallagher & Co.

On January 9, 2026 - Diversified Trust Co filed a 13F-HR form disclosing ownership of 0 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 20, 2025 disclosing 661 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 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)
2026-01-09 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 0 -661 -100.00 0 -100.00
2025-10-20 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 661 2 0.30 205 -2.86 0.0041
2025-07-11 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 659 -7 -1.05 211 -8.30 0.0047
2025-04-24 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 666 -1,692 -71.76 230 -65.77 0.0057
2025-01-07 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 2,358 124 5.55 669 6.53 0.0163
2024-10-07 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 2,234 -897 -28.65 629 -22.56 0.0158
2024-07-16 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,131 55 1.79 812 5.46 0.0229
2024-04-18 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 3,076 -391 -11.28 769 -1.28 0.0232
2024-01-08 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 3,467 142 4.27 780 2.91 0.0262
2023-11-17 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,325 53 1.62 758 5.43 0.0287
2023-07-18 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,272 -80 -2.39 718 12.01 0.0262
2023-04-07 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 3,352 0 0.00 641 1.42 0.0250
2023-01-17 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 3,352 -2,259 -40.26 1 -100.00 0.0263
2022-10-14 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,611 -4,482 -44.41 961 -41.62 0.0435
2022-07-12 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 10,093 -6 -0.06 1,646 -6.64 0.0690
2022-04-07 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 10,099 477 4.96 1,763 7.96 0.0615
2022-01-13 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 9,622 625 6.95 1,633 22.14 0.0538
2022-01-13 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 8,997 -20 -0.22 1,337 5.86 0.0481
2021-07-20 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 9,017 -880 -8.89 1,263 2.27 0.0456
2021-05-10 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 9,897 625 6.74 1,235 7.67 0.0476
2021-01-08 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 9,272 -423 -4.36 1,147 12.01 0.0465
2020-10-15 2020-09-30 13F GALLAGHER ARTHUR J COM 363576109 9,695 -189 -1.91 1,024 6.22 0.0473
2020-07-07 2020-06-30 13F GALLAGHER ARTHUR J COM 363576109 9,884 3,087 45.42 964 74.01 0.0487
2020-04-10 2020-03-31 13F GALLAGHER ARTHUR J COM 363576109 6,797 985 16.95 554 0.18 0.0324
2020-01-09 2019-12-31 13F GALLAGHER ARTHUR J COM 363576109 5,812 810 16.19 553 23.44 0.0248
2019-10-09 2019-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,002 -630 -11.19 448 -9.13 0.0210
2019-07-12 2019-06-30 13F GALLAGHER ARTHUR J COM 363576109 5,632 440 8.47 493 21.73 0.0234
2019-05-22 2019-03-31 13F GALLAGHER ARTHUR J COM 363576109 5,192 12 0.23 405 6.02 0.0197
2019-01-18 2018-12-31 13F GALLAGHER ARTHUR J COM 363576109 5,180 110 2.17 382 1.33 0.0213
2018-11-26 2018-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,070 0 0.00 377 13.90 0.0188
2018-07-23 2018-06-30 13F GALLAGHER ARTHUR J COM 363576109 5,070 488 10.65 331 5.08 0.0211
2018-06-01 2018-03-31 13F GALLAGHER ARTHUR J COM 363576109 4,582 202 4.61 315 13.72 0.0201
2018-01-19 2017-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,380 0 0.00 277 2.59 0.0169
2017-10-17 2017-09-30 13F GALLAGHER ARTHUR J COM 363576109 4,380 -110 -2.45 270 5.06 0.0206
2017-07-18 2017-06-30 13F GALLAGHER ARTHUR J COM 363576109 4,490 0 0.00 257 1.18 0.0209
2017-04-21 2017-03-31 13F GALLAGHER ARTHUR J COM 363576109 4,490 -225 -4.77 254 3.67 0.0195
2017-02-22 2016-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,715 2 0.04 245 2.08 0.0208
2016-11-03 2016-09-30 13F GALLAGHER ARTHUR J COM 363576109 4,713 -1,737 -26.93 240 -21.82 0.0280
2016-07-26 2016-06-30 13F GALLAGHER ARTHUR J COM 363576109 6,450 0 0.00 307 6.97 0.0354
2016-05-02 2016-03-31 13F GALLAGHER ARTHUR J COM 363576109 6,450 0 0.00 287 8.71 0.0316
2016-01-27 2015-12-31 13F GALLAGHER ARTHUR J COM 363576109 6,450 -850 -11.64 264 -12.29 0.0283
2015-11-02 2015-09-30 13F GALLAGHER ARTHUR J COM 363576109 7,300 -500 -6.41 301 -18.43 0.0323
2015-07-15 2015-06-30 13F GALLAGHER ARTHUR J COM 363576109 7,800 -1,500 -16.13 369 -15.17 0.0349
2015-04-29 2015-03-31 13F GALLAGHER ARTHUR J COM 363576109 9,300 9,300 0.00 435 0.0377
2015-02-04 2014-12-31 13F GALLAGHER ARTHUR J COM 363576109 0 -13,200 -100.00 0 -100.00
2014-08-15 2014-06-30 13F GALLAGHER ARTHUR J COM 363576109 13,200 -700 -5.04 615 -5.67 0.0513
2014-02-10 2013-12-31 13F GALLAGHER Common 363576109 13,900 -350 -2.46 652 4.82 0.0665
2013-10-18 2013-09-30 13F GALLAGHER Common 363576109 14,250 200 1.42 622 1.30 0.0657
2013-07-23 2013-06-30 13F GALLAGHER Common 363576109 14,050 14,050 614 0.0730
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.