Trustmark Corporation
US ˙ NasdaqGS ˙ US8984021027

SecurityTRMK / Trustmark Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership646,862 shares
Latest Disclosed Value $ 27,258,764
Northern Trust Corp reports 2.35% increase in ownership of TRMK / Trustmark Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 646,862 shares of Trustmark Corporation (US:TRMK) valued at $27,258,765 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 632,012 shares of Trustmark Corporation. This represents a change in shares of 2.35% during the quarter. The current value of the position is $28,474,865 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)
2026-05-14 2026-03-31 13F TRUSTMARK COM 898402102 646,862 14,850 2.35 27,259 10.73 0.0007
2026-02-17 2025-12-31 13F TRUSTMARK COM 898402102 632,012 -42,331 -6.28 24,617 -7.82 0.0031
2025-11-14 2025-09-30 13F TRUSTMARK COM 898402102 674,343 37,819 5.94 26,704 15.06 0.0034
2025-08-13 2025-06-30 13F TRUSTMARK COM 898402102 636,524 -153,750 -19.46 23,208 -14.86 0.0032
2025-05-13 2025-03-31 13F TRUSTMARK COM 898402102 790,274 -18,570 -2.30 27,257 -4.73 0.0040
2025-02-14 2024-12-31 13F TRUSTMARK COM 898402102 808,844 38,594 5.01 28,609 16.72 0.0041
2024-11-13 2024-09-30 13F TRUSTMARK COM 898402102 770,250 -1,667 -0.22 24,509 5.70 0.0040
2024-08-14 2024-06-30 13F TRUSTMARK COM 898402102 771,917 -17,936 -2.27 23,188 4.44 0.0039
2024-05-14 2024-03-31 13F TRUSTMARK COM 898402102 789,853 -55,305 -6.54 22,203 -5.78 0.0038
2024-02-13 2023-12-31 13F TRUSTMARK COM 898402102 845,158 34,630 4.27 23,563 33.79 0.0043
2023-11-13 2023-09-30 13F TRUSTMARK COM 898402102 810,528 -3,493 -0.43 17,613 2.44 0.0034
2023-08-11 2023-06-30 13F TRUSTMARK COM 898402102 814,021 -1,078 -0.13 17,192 -14.60 0.0033
2023-05-15 2023-03-31 13F TRUSTMARK COM 898402102 815,099 -15,030 -1.81 20,133 -30.53 0.0040
2023-02-13 2022-12-31 13F TRUSTMARK COM 898402102 830,129 4,229 0.51 28,980 14.56 0.0061
2022-11-14 2022-09-30 13F TRUSTMARK COM 898402102 825,900 -3,277 -0.40 25,297 4.51 0.0058
2022-08-12 2022-06-30 13F TRUSTMARK COM 898402102 829,177 -13,543 -1.61 24,205 -5.49 0.0052
2022-05-13 2022-03-31 13F TRUSTMARK COM 898402102 842,720 -35,563 -4.05 25,610 -10.17 0.0045
2022-02-08 2021-12-31 13F TRUSTMARK COM 898402102 878,283 -14,217 -1.59 28,509 -0.86 0.0047
2021-11-15 2021-09-30 13F TRUSTMARK COM 898402102 892,500 -190,353 -17.58 28,757 -13.78 0.0051
2021-08-13 2021-06-30 13F TRUSTMARK COM 898402102 1,082,853 -19,066 -1.73 33,352 -10.08 0.0059
2021-05-12 2021-03-31 13F TRUSTMARK COM 898402102 1,101,919 -226,361 -17.04 37,091 2.25 0.0069
2021-02-11 2020-12-31 13F TRUSTMARK COM 898402102 1,328,280 -33,404 -2.45 36,275 24.43 0.0071
2020-11-16 2020-09-30 13F TRUSTMARK COM 898402102 1,361,684 -51,155 -3.62 29,154 -15.84 0.0064
2020-08-14 2020-06-30 13F TRUSTMARK COM 898402102 1,412,839 -602,322 -29.89 34,643 -26.22 0.0082
2020-05-14 2020-03-31 13F TRUSTMARK COM 898402102 2,015,161 3,441 0.17 46,954 -32.37 0.0135
2020-02-14 2019-12-31 13F TRUSTMARK COM 898402102 2,011,720 -8,905 -0.44 69,424 0.73 0.0155
2019-11-13 2019-09-30 13F TRUSTMARK COM 898402102 2,020,625 4,599 0.23 68,923 2.82 0.0165
2019-08-13 2019-06-30 13F TRUSTMARK COM 898402102 2,016,026 19,016 0.95 67,034 -0.19 0.0159
2019-05-13 2019-03-31 13F TRUSTMARK COM 898402102 1,997,010 -5,283 -0.26 67,159 17.98 0.0166
2019-02-12 2018-12-31 13F TRUSTMARK COM 898402102 2,002,293 -5,868 -0.29 56,925 -15.76 0.0160
2018-11-14 2018-09-30 13F TRUSTMARK COM 898402102 2,008,161 -59,169 -2.86 67,575 0.17 0.0165
2018-09-18 2018-06-30 13F/A-1 TRUSTMARK COM 898402102 2,067,330 11,836 0.58 67,457 5.32 0.0171
2018-08-14 2018-06-30 13F TRUSTMARK COM 898402102 2,071,780 16,286 67,602
2018-05-09 2018-03-31 13F TRUSTMARK COM 898402102 2,055,494 -3,401 -0.17 64,048 -2.36 0.0167
2018-02-14 2017-12-31 13F TRUSTMARK COM 898402102 2,058,895 -51,771 -2.45 65,596 -6.16 0.0166
2017-11-13 2017-09-30 13F TRUSTMARK COM 898402102 2,110,666 -18,939 -0.89 69,905 2.07 0.0182
2017-08-11 2017-06-30 13F TRUSTMARK COM 898402102 2,129,605 30,321 1.44 68,489 2.63 0.0192
2017-05-12 2017-03-31 13F TRUSTMARK COM 898402102 2,099,284 11,641 0.56 66,737 -10.33 0.0192
2017-02-13 2016-12-31 13F TRUSTMARK COM 898402102 2,087,643 -77,223 -3.57 74,425 24.74 0.0228
2016-11-09 2016-09-30 13F TRUSTMARK COM 898402102 2,164,866 21,254 0.99 59,664 12.01 0.0186
2016-08-12 2016-06-30 13F TRUSTMARK COM 898402102 2,143,612 14,895 0.70 53,269 8.62 0.0173
2016-08-19 2016-03-31 13F/A-1 TRUSTMARK COM 898402102 2,128,717 18,820 0.89 49,041 0.88 0.0163
2016-05-13 2016-03-31 13F Trustmark COMM 898402102 2,128,713 49,024
2016-02-12 2015-12-31 13F Trustmark COMM 898402102 2,109,897 -15,550 -0.73 48,612 -1.29 0.0161
2015-11-12 2015-09-30 13F Trustmark COMM 898402102 2,125,447 2,125,447 0.00 49,246 0.0164
2015-08-13 2015-06-30 13F Trustmark COMM 898402102 0 -2,009,057 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Trustmark COMM 898402102 2,009,057 103,370 5.42 48,780 4.31 0.0147
2015-02-12 2014-12-31 13F Trustmark COM 898402102 1,905,687 -5,671 -0.30 46,765 6.22 0.0141
2014-11-13 2014-09-30 13F Trustmark COMM 898402102 1,911,358 54,977 2.96 44,028 -3.94 0.0138
2014-08-14 2014-06-30 13F TRUSTMARK com 898402102 1,856,381 -194,554 -9.49 45,834 -11.84 0.0143
2014-05-14 2014-03-31 13F TRUSTMARK COMM 898402102 2,050,935 51,546 2.58 51,991 -3.12 0.0164
2014-02-21 2013-12-31 13F/A-1 TRUSTMARK COM 898402102 1,999,389 15,022 0.76 53,663 5.64 0.0172
2014-02-12 2013-12-31 13F TRUSTMARK COM 898402102 1,999,389 53,663
2013-11-13 2013-09-30 13F TRUSTMARK COM 898402102 1,984,367 3,501 0.18 50,800 4.34 0.0179
2013-08-09 2013-06-30 13F TRUSTMARK COM 898402102 1,980,866 1,980,866 48,689 0.0176
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.