Prosperity Bancshares, Inc.
US ˙ NYSE ˙ US7436061052

SecurityPB / Prosperity Bancshares, Inc.
InstitutionSepio Capital, LP
Latest Disclosed Ownership4,679 shares
Latest Disclosed Value $ 314,335
Sepio Capital, LP reports 17.93% decrease in ownership of PB / Prosperity Bancshares, Inc.

On May 13, 2026 - Sepio Capital, LP filed a 13F-HR form disclosing ownership of 4,679 shares of Prosperity Bancshares, Inc. (US:PB) valued at $314,335 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 5,701 shares of Prosperity Bancshares, Inc.. This represents a change in shares of -17.93% during the quarter. The current value of the position is $321,681 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 PROSPERITY BANCSHARES COM 743606105 4,679 -1,022 -17.93 314 -20.10 0.0171
2026-02-12 2025-12-31 13F PROSPERITY BANCSHARES COM 743606105 5,701 133 2.39 394 6.50 0.0216
2025-11-13 2025-09-30 13F PROSPERITY BANCSHARES COM 743606105 5,568 -5 -0.09 369 -5.63 0.0219
2025-08-13 2025-06-30 13F PROSPERITY BANCSHARES COM 743606105 5,573 -677 -10.83 391 -12.33 0.0279
2025-05-15 2025-03-31 13F PROSPERITY BANCSHARES COM 743606105 6,250 -21 -0.33 446 -5.51 0.0353
2025-02-13 2024-12-31 13F PROSPERITY BANCSHARES COM 743606105 6,271 -239 -3.67 473 0.64 0.0378
2024-11-14 2024-09-30 13F PROSPERITY BANCSHARES COM 743606105 6,510 0 0.00 469 17.84 0.0365
2024-08-15 2024-06-30 13F PROSPERITY BANCSHARES COM 743606105 6,510 -150 -2.25 398 -9.13 0.0365
2024-05-15 2024-03-31 13F PROSPERITY BANCSHARES COM 743606105 6,660 69 1.05 438 -1.79 0.0376
2024-02-09 2023-12-31 13F PROSPERITY BANCSHARES COM 743606105 6,591 -595 -8.28 446 13.78 0.0375
2023-11-08 2023-09-30 13F PROSPERITY BANCSHARES COM 743606105 7,186 0 0.00 392 -3.21 0.0339
2023-08-08 2023-06-30 13F PROSPERITY BANCSHARES COM 743606105 7,186 -192 -2.60 406 -10.60 0.0330
2023-05-10 2023-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,378 -297 -3.87 454 -18.67 0.0419
2023-02-03 2022-12-31 13F PROSPERITY BANCSHARES COM 743606105 7,675 -2,919 -27.55 558 -21.10 0.0482
2022-10-28 2022-09-30 13F PROSPERITY BANCSHARES COM 743606105 10,594 0 0.00 706 -2.35 0.0701
2022-07-26 2022-06-30 13F PROSPERITY BANCSHARES COM 743606105 10,594 -481 -4.34 723 -5.86 0.0726
2022-05-09 2022-03-31 13F PROSPERITY BANCSHARES COM 743606105 11,075 -2,784 -20.09 768 -23.35 0.0674
2022-01-25 2021-12-31 13F PROSPERITY BANCSHARES COM 743606105 13,859 -731 -5.01 1,002 -3.47 0.0740
2021-11-03 2021-09-30 13F PROSPERITY BANCSHARES COM 743606105 14,590 0 0.00 1,038 -0.95 0.0856
2021-07-29 2021-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 14,590 -5 -0.03 1,048 -4.12 0.0863
2021-07-26 2021-06-30 13F PROSPERITY BANCSHARES COM 743606105 14,590 -5 1,048 0.0904
2021-05-10 2021-03-31 13F PROSPERITY BANCSHARES COM 743606105 14,595 595 4.25 1,093 12.56 0.1007
2021-02-10 2020-12-31 13F PROSPERITY BANCSHARES COM 743606105 14,000 1,956 16.24 971 55.61 0.0838
2020-11-12 2020-09-30 13F PROSPERITY BANCSHARES COM 743606105 12,044 0 0.00 624 -12.73 0.0678
2020-08-04 2020-06-30 13F PROSPERITY BANCSHARES COM 743606105 12,044 4,317 55.87 715 91.69 0.0840
2020-04-29 2020-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,727 0 0.00 373 -32.79 0.0494
2020-02-06 2019-12-31 13F PROSPERITY BANCSHARES COM 743606105 7,727 -301 -3.75 555 -2.12 0.0525
2019-10-25 2019-09-30 13F PROSPERITY BANCSHARES COM 743606105 8,028 505 6.71 567 14.08 0.0585
2019-08-08 2019-06-30 13F PROSPERITY BANCSHARES COM 743606105 7,523 0 0.00 497 -4.42 0.0671
2019-06-21 2019-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 7,523 -1,080 -12.55 520 -2.99 0.0702
2019-05-14 2019-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,523 -1,080 520 0.0769
2019-02-13 2018-12-31 13F PROSPERITY BANCSHARES COM 743606105 8,603 8,603 536 0.0390
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.