Prosperity Bancshares, Inc.
US ˙ NYSE ˙ US7436061052

SecurityPB / Prosperity Bancshares, Inc.
InstitutionSather Financial Group Inc
Latest Disclosed Ownership4,478 shares
Latest Disclosed Value $ 300,832
Sather Financial Group Inc reports 2.28% increase in ownership of PB / Prosperity Bancshares, Inc.

On April 29, 2026 - Sather Financial Group Inc filed a 13F-HR form disclosing ownership of 4,478 shares of Prosperity Bancshares, Inc. (US:PB) valued at $300,832 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 4,378 shares of Prosperity Bancshares, Inc.. This represents a change in shares of 2.28% during the quarter. The current value of the position is $310,594 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)
2026-04-29 2026-03-31 13F PROSPERITY BANCSHARES COM 743606105 4,478 100 2.28 301 -0.66 0.0162
2026-01-26 2025-12-31 13F PROSPERITY BANCSHARES COM 743606105 4,378 0 0.00 303 4.14 0.0131
2025-10-22 2025-09-30 13F PROSPERITY BANCSHARES COM 743606105 4,378 0 0.00 290 -5.54 0.0158
2025-07-25 2025-06-30 13F PROSPERITY BANCSHARES COM 743606105 4,378 0 0.00 308 -1.60 0.0181
2025-05-07 2025-03-31 13F PROSPERITY BANCSHARES COM 743606105 4,378 0 0.00 312 -5.17 0.0204
2025-01-29 2024-12-31 13F PROSPERITY BANCSHARES COM 743606105 4,378 -11,649 -72.68 330 -71.52 0.0207
2024-11-06 2024-09-30 13F PROSPERITY BANCSHARES COM 743606105 16,027 0 0.00 1,155 17.98 0.0743
2024-07-24 2024-06-30 13F PROSPERITY BANCSHARES COM 743606105 16,027 -1,500 -8.56 980 -15.02 0.0679
2024-05-07 2024-03-31 13F PROSPERITY BANCSHARES COM 743606105 17,527 0 0.00 1,153 -2.95 0.0827
2024-01-26 2023-12-31 13F PROSPERITY BANCSHARES COM 743606105 17,527 0 0.00 1,187 24.16 0.0878
2023-10-19 2023-09-30 13F PROSPERITY BANCSHARES COM 743606105 17,527 11,649 198.18 957 188.82 0.0796
2023-07-20 2023-06-30 13F PROSPERITY BANCSHARES COM 743606105 5,878 0 0.00 332 -8.31 0.0266
2023-04-18 2023-03-31 13F PROSPERITY BANCSHARES COM 743606105 5,878 0 0.00 362 -15.46 0.0314
2023-01-20 2022-12-31 13F PROSPERITY BANCSHARES COM 743606105 5,878 0 0.00 427 8.93 0.0351
2022-10-21 2022-09-30 13F PROSPERITY BANCSHARES COM 743606105 5,878 -300 -4.86 392 -7.11 0.0432
2022-07-20 2022-06-30 13F PROSPERITY BANCSHARES COM 743606105 6,178 -900 -12.72 422 -14.05 0.0438
2022-04-29 2022-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,078 -2,000 -22.03 491 -25.15 0.0424
2022-01-24 2021-12-31 13F PROSPERITY BANCSHARES COM 743606105 9,078 -3,000 -24.84 656 -23.63 0.0569
2021-11-02 2021-09-30 13F PROSPERITY BANCSHARES COM 743606105 12,078 -1,000 -7.65 859 -8.52 0.0876
2021-07-14 2021-06-30 13F PROSPERITY BANCSHARES COM 743606105 13,078 -4,284 -24.67 939 -27.77 0.0986
2021-04-22 2021-03-31 13F PROSPERITY BANCSHARES COM 743606105 17,362 2,516 16.95 1,300 26.34 0.1513
2021-02-08 2020-12-31 13F PROSPERITY BANCSHARES COM 743606105 14,846 0 0.00 1,029 33.81 0.1329
2020-11-02 2020-09-30 13F PROSPERITY BANCSHARES COM 743606105 14,846 7,768 109.75 769 83.10 0.1225
2020-08-05 2020-06-30 13F PROSPERITY BANCSHARES COM 743606105 7,078 -1,465 -17.15 420 1.94 0.0720
2020-05-11 2020-03-31 13F PROSPERITY BANCSHARES COM 743606105 8,543 0 0.00 412 -32.90 0.0806
2020-02-14 2019-12-31 13F PROSPERITY BANCSHARES COM 743606105 8,543 0 0.00 614 1.82 0.0962
2019-11-12 2019-09-30 13F PROSPERITY BANCSHARES COM 743606105 8,543 0 0.00 603 6.91 0.1096
2019-07-23 2019-06-30 13F PROSPERITY BANCSHARES COM 743606105 8,543 0 0.00 564 -4.24 0.1070
2019-05-13 2019-03-31 13F PROSPERITY BANCSHARES COM 743606105 8,543 -750 -8.07 589 1.90 0.1193
2019-02-13 2018-12-31 13F PROSPERITY BANCSHARES COM 743606105 9,293 2,965 46.86 578 31.96 0.1259
2018-11-07 2018-09-30 13F PROSPERITY BANCSHARES COM 743606105 6,328 -1,965 -23.69 438 -22.75 0.0881
2018-08-03 2018-06-30 13F PROSPERITY BANCSHARES COM 743606105 8,293 0 0.00 567 -5.81 0.1254
2018-05-09 2018-03-31 13F PROSPERITY BANCSHARES COM 743606105 8,293 0 0.00 602 3.61 0.1407
2018-02-14 2017-12-31 13F PROSPERITY BANCSHARES COM 743606105 8,293 0 0.00 581 6.61 0.1450
2017-11-14 2017-09-30 13F PROSPERITY BANCSHARES COM 743606105 8,293 8,293 545 0.1493
2017-05-09 2017-03-31 13F PROSPERITY BANCSHARES COM 743606105 0 -3,465 -100.00 0 -100.00
2017-02-14 2016-12-31 13F PROSPERITY BANCSHARES COM 743606105 3,465 -1,500 -30.21 249 -8.79 0.0861
2016-11-14 2016-09-30 13F PROSPERITY BANCSHARES COM 743606105 4,965 0 0.00 273 7.91 0.1043
2016-08-12 2016-06-30 13F PROSPERITY BANCSHARES COM 743606105 4,965 -1,000 -16.76 253 -8.66 0.0983
2016-05-16 2016-03-31 13F PROSPERITY BANCSHARES COM 743606105 5,965 0 0.00 277 -2.81 0.1114
2016-02-12 2015-12-31 13F PROSPERITY BANCSHARES COM 743606105 5,965 0 0.00 285 -2.73 0.1196
2015-11-03 2015-09-30 13F PROSPERITY BANCSHARES COM 743606105 5,965 0 0.00 293 -14.83 0.1192
2015-08-07 2015-06-30 13F PROSPERITY BANCSHARES INC COM COM 743606105 5,965 -445 -6.94 344 1.78 0.1457
2015-05-12 2015-03-31 13F PROSPERITY BANCSHARES COM 743606105 6,410 0 0.00 338 -4.79 0.1473
2015-02-12 2014-12-31 13F PROSPERITY BANCSHARES COM 743606105 6,410 445 7.46 355 4.11 0.1604
2014-11-07 2014-09-30 13F PROSPERITY BANCSHARES COM 743606105 5,965 0 0.00 341 -8.58 0.1546
2014-08-12 2014-06-30 13F PROSPERITY BANCSHARES COM 743606105 5,965 0 0.00 373 -5.33 0.1942
2014-04-22 2014-03-31 13F PROSPERITY BANCSHARES COM 743606105 5,965 -15,607 -72.35 394 -71.18 0.2488
2014-01-30 2013-12-31 13F PROSPERITY BANCSHARES COM 743606105 21,572 21,572 1,367 0.9106
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.