Prosperity Bancshares, Inc.
US ˙ NYSE ˙ US7436061052

SecurityPB / Prosperity Bancshares, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership129,525 shares
Latest Disclosed Value $ 8,951,595
Sei Investments Co reports 12.05% increase in ownership of PB / Prosperity Bancshares, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 129,525 shares of Prosperity Bancshares, Inc. (US:PB) valued at $8,951,473 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 115,597 shares of Prosperity Bancshares, Inc.. This represents a change in shares of 12.05% during the quarter. The current value of the position is $8,904,844 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)
2026-02-13 2025-12-31 13F PROSPERITY BANCSHARES COM 743606105 129,525 13,928 12.05 8,952 16.72 0.0088
2025-11-13 2025-09-30 13F PROSPERITY BANCSHARES COM 743606105 115,597 -22,646 -16.38 7,670 -21.01 0.0082
2025-08-14 2025-06-30 13F PROSPERITY BANCSHARES COM 743606105 138,243 10,218 7.98 9,709 6.26 0.0113
2025-05-14 2025-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 128,025 11,958 10.30 9,137 4.48 0.0118
2025-05-13 2025-03-31 13F PROSPERITY BANCSHARES COM 743606105 117,063 996 8,771 0.0095
2025-02-11 2024-12-31 13F PROSPERITY BANCSHARES COM 743606105 116,067 -2,286 -1.93 8,745 2.53 0.0112
2024-11-12 2024-09-30 13F PROSPERITY BANCSHARES COM 743606105 118,353 25,340 27.24 8,530 50.00 0.0111
2024-08-13 2024-06-30 13F PROSPERITY BANCSHARES COM 743606105 93,013 51,979 126.67 5,687 110.67 0.0081
2024-05-07 2024-03-31 13F PROSPERITY BANCSHARES COM 743606105 41,034 -65,807 -61.59 2,699 -62.70 0.0040
2024-02-14 2023-12-31 13F PROSPERITY BANCSHARES COM 743606105 106,841 11,601 12.18 7,237 39.21 0.0116
2023-11-14 2023-09-30 13F PROSPERITY BANCSHARES COM 743606105 95,240 -54,534 -36.41 5,198 -38.55 0.0093
2023-08-11 2023-06-30 13F PROSPERITY BANCSHARES COM 743606105 149,774 -72,762 -32.70 8,459 -38.21 0.0148
2023-05-12 2023-03-31 13F PROSPERITY BANCSHARES COM 743606105 222,536 -46,030 -17.14 13,691 -29.86 0.0254
2023-02-10 2022-12-31 13F PROSPERITY BANCSHARES COM 743606105 268,566 21,505 8.70 19,519 18.48 0.0434
2022-11-14 2022-09-30 13F PROSPERITY BANCSHARES COM 743606105 247,061 -14,826 -5.66 16,474 -7.90 0.0367
2022-08-15 2022-06-30 13F PROSPERITY BANCSHARES COM 743606105 261,887 36,318 16.10 17,888 14.26 0.0386
2022-05-13 2022-03-31 13F PROSPERITY BANCSHARES COM 743606105 225,569 46,202 25.76 15,655 20.67 0.0315
2022-02-14 2021-12-31 13F PROSPERITY BANCSHARES COM 743606105 179,367 34,509 23.82 12,973 25.89 0.0243
2021-11-12 2021-09-30 13F PROSPERITY BANCSHARES COM 743606105 144,858 18,474 14.62 10,305 13.55 0.0216
2021-08-06 2021-06-30 13F PROSPERITY BANCSHARES COM 743606105 126,384 56,540 80.95 9,075 73.82 0.0201
2021-05-12 2021-03-31 13F PROSPERITY BANCSHARES COM 743606105 69,844 -1,700 -2.38 5,221 5.22 0.0132
2021-02-08 2020-12-31 13F PROSPERITY BANCSHARES COM 743606105 71,544 -44 -0.06 4,962 33.75 0.0128
2020-12-04 2020-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 71,588 2,956 4.31 3,710 -8.98 0.0107
2020-11-06 2020-09-30 13F PROSPERITY BANCSHARES COM 743606105 72,954 4,322 3,781 9,103.8073
2020-08-17 2020-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 68,632 -53,849 -43.97 4,076 -31.65 0.0126
2020-08-11 2020-06-30 13F PROSPERITY BANCSHARES COM 743606105 85,186 -37,295 6,047 16,402.8094
2020-05-14 2020-03-31 13F PROSPERITY BANCSHARES COM 743606105 122,481 26,282 27.32 5,963 -13.94 0.0219
2020-02-06 2019-12-31 13F PROSPERITY BANCSHARES COM 743606105 96,199 -9,525 -9.01 6,929 -7.37 0.0207
2019-11-12 2019-09-30 13F PROSPERITY BANCSHARES COM 743606105 105,724 3,806 3.73 7,480 10.72 0.0191
2019-08-14 2019-06-30 13F PROSPERITY BANCSHARES COM 743606105 101,918 -54,217 -34.72 6,756 -37.42 0.0221
2019-05-15 2019-03-31 13F PROSPERITY BANCSHARES COM 743606105 156,135 87,112 126.21 10,796 125.25 0.0363
2019-02-13 2018-12-31 13F PROSPERITY BANCSHARES COM 743606105 69,023 5,147 8.06 4,793 8.19 0.0171
2018-11-08 2018-09-30 13F PROSPERITY BANCSHARES COM 743606105 63,876 8,262 14.86 4,430 16.55 0.0161
2018-08-03 2018-06-30 13F PROSPERITY BANCSHARES COM 743606105 55,614 -8,503 -13.26 3,801 -18.40 0.0129
2018-05-11 2018-03-31 13F PROSPERITY BANCSHARES COM 743606105 64,117 -308 -0.48 4,658 3.19 0.0179
2018-02-08 2017-12-31 13F PROSPERITY BANCSHARES COM 743606105 64,425 64 0.10 4,514 6.71 0.0157
2017-11-06 2017-09-30 13F PROSPERITY BANCSHARES COM 743606105 64,361 7,071 12.34 4,230 14.91 0.0150
2017-07-31 2017-06-30 13F PROSPERITY BANCSHARES COM 743606105 57,290 -1,813 -3.07 3,681 -10.68 0.0147
2017-05-05 2017-03-31 13F PROSPERITY BANCSHARES COM 743606105 59,103 12,638 27.20 4,121 23.57 0.0181
2017-02-02 2016-12-31 13F PROSPERITY BANCSHARES COM 743606105 46,465 -575 -1.22 3,335 29.16 0.0161
2016-11-04 2016-09-30 13F PROSPERITY BANCSHARES COM 743606105 47,040 1,585 3.49 2,582 11.39 0.0131
2016-08-11 2016-06-30 13F PROSPERITY BANCSHARES COM 743606105 45,455 1,655 3.78 2,318 14.07 0.0139
2016-05-10 2016-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 43,800 19,570 80.77 2,032 75.32 0.0126
2016-02-03 2015-12-31 13F PROSPERITY BANCSHARES COM 743606105 24,230 330 1.38 1,159 -1.28 0.0071
2015-11-02 2015-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 23,900 9,300 63.70 1,174 39.26 0.0108
2015-10-30 2015-09-30 13F PROSPERITY BANCSHARES COM 743606105 23,900 1,174
2015-08-07 2015-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 14,600 -200 -1.35 843 8.49 0.0076
2015-08-04 2015-06-30 13F PROSPERITY BANCSHARES COM 743606105 14,600 -200 843 0.0076
2015-05-14 2015-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 14,800 242 1.66 777 -3.60 0.0067
2015-05-01 2015-03-31 13F PROSPECT CAPITAL NOTE 5.875% 1/1 743606105 14,800 777
2015-02-10 2014-12-31 13F PROSPERITY BANCSHARES COM 743606105 14,558 14,558 806 0.0071
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.