Great Southern Bancorp, Inc.
US ˙ NasdaqGS ˙ US3909051076

SecurityGSBC / Great Southern Bancorp, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership318,682 shares
Latest Disclosed Value $ 20,257,808
State Street Corp reports 5.56% increase in ownership of GSBC / Great Southern Bancorp, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 318,682 shares of Great Southern Bancorp, Inc. (US:GSBC) valued at $20,118,395 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 301,905 shares of Great Southern Bancorp, Inc.. This represents a change in shares of 5.56% during the quarter. The current value of the position is $22,639,169 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)
2026-05-15 2026-03-31 13F GREAT SOUTHN BANCORP COM 390905107 318,682 16,777 5.56 20,258 8.26 0.0007
2026-02-13 2025-12-31 13F GREAT SOUTHN BANCORP COM 390905107 301,905 -13,957 -4.42 18,713 -3.94 0.0006
2025-11-14 2025-09-30 13F GREAT SOUTHN BANCORP COM 390905107 315,862 27,861 9.67 19,481 14.31 0.0007
2025-08-14 2025-06-30 13F GREAT SOUTHN BANCORP COM 390905107 288,001 -5,316 -1.81 17,042 4.18 0.0006
2025-05-15 2025-03-31 13F GREAT SOUTHN BANCORP COM 390905107 293,317 1,310 0.45 16,359 -6.78 0.0007
2025-02-14 2024-12-31 13F GREAT SOUTHN BANCORP COM 390905107 292,007 5,593 1.95 17,548 6.18 0.0007
2024-11-14 2024-09-30 13F GREAT SOUTHN BANCORP COM 390905107 286,414 -2,337 -0.81 16,528 2.93 0.0007
2024-08-14 2024-06-30 13F GREAT SOUTHN BANCORP COM 390905107 288,751 -1,366 -0.47 16,057 0.96 0.0007
2024-05-15 2024-03-31 13F GREAT SOUTHN BANCORP COM 390905107 290,117 -564 -0.19 15,904 -8.42 0.0007
2024-02-14 2023-12-31 13F GREAT SOUTHN BANCORP COM 390905107 290,681 17,640 6.46 17,368 31.65 0.0008
2023-11-14 2023-09-30 13F GREAT SOUTHN BANCORP COM 390905107 273,041 -8,621 -3.06 13,193 -8.40 0.0007
2023-08-14 2023-06-30 13F GREAT SOUTHN BANCORP COM 390905107 281,662 4,743 1.71 14,401 1.83 0.0008
2023-05-15 2023-03-31 13F GREAT SOUTHN BANCORP COM 390905107 276,919 10,822 4.07 14,143 -11.26 0.0008
2023-05-15 2022-12-31 13F/A-99 GREAT SOUTHN BANCORP COM 390905107 266,097 -9,302 -3.38 15,936 0.70 0.0009
2023-05-15 2022-12-31 13F GREAT SOUTHN BANCORP COM 390905107 266,097 -9,302 15,936 0.0009
2022-11-15 2022-09-30 13F GREAT SOUTHN BANCORP COM 390905107 275,399 -13,319 -4.61 15,826 -7.02 0.0010
2022-08-15 2022-06-30 13F GREAT SOUTHN BANCORP COM 390905107 288,718 -34,121 -10.57 17,021 -11.20 0.0010
2022-05-16 2022-03-31 13F GREAT SOUTHN BANCORP COM 390905107 322,839 37,201 13.02 19,168 12.57 0.0009
2022-02-14 2021-12-31 13F GREAT SOUTHN BANCORP COM 390905107 285,638 68,201 31.37 17,027 41.94 0.0008
2021-11-15 2021-09-30 13F GREAT SOUTHN BANCORP COM 390905107 217,437 -20,112 -8.47 11,996 -6.91 0.0006
2021-08-16 2021-06-30 13F GREAT SOUTHN BANCORP COM 390905107 237,549 17,004 7.71 12,886 2.51 0.0007
2021-07-09 2021-03-31 13F/A-1 GREAT SOUTHN BANCORP COM 390905107 220,545 4,738 2.20 12,570 18.31 0.0007
2021-05-17 2021-03-31 13F GREAT SOUTHN BANCORP COM 390905107 220,545 4,738 12,570 0.0007
2021-02-16 2020-12-31 13F GREAT SOUTHN BANCORP COM 390905107 215,807 -4,166 -1.89 10,625 32.12 0.0007
2020-11-10 2020-09-30 13F GREAT SOUTHN BANCORP COM 390905107 219,973 -22,897 -9.43 8,042 -18.64 0.0005
2020-08-14 2020-06-30 13F GREAT SOUTHN BANCORP COM 390905107 242,870 -527 -0.22 9,884 -0.28 0.0007
2020-06-19 2020-03-31 13F/A-1 GREAT SOUTHN BANCORP COM 390905107 243,397 -2,914 -1.18 9,912 -36.79 0.0009
2020-05-11 2020-03-31 13F GREAT SOUTHN BANCORP COM 390905107 243,397 -2,914 9,912 870.4732
2020-02-06 2019-12-31 13F GREAT SOUTHN BANCORP COM 390905107 246,311 761 0.31 15,680 11.47 0.0011
2019-11-14 2019-09-30 13F GREAT SOUTHN BANCORP COM 390905107 245,550 4,855 2.02 14,067 -2.87 0.0010
2019-08-14 2019-06-30 13F GREAT SOUTHN BANCORP COM 390905107 240,695 6,161 2.63 14,482 18.25 0.0011
2019-05-15 2019-03-31 13F GREAT SOUTHN BANCORP COM 390905107 234,534 2,084 0.90 12,247 13.67 0.0010
2019-02-12 2018-12-31 13F GREAT SOUTHN BANCORP COM 390905107 232,450 1,839 0.80 10,774 -15.60 0.0010
2018-11-09 2018-09-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 230,611 2,226 0.97 12,766 -2.25 0.0010
2018-08-14 2018-06-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 228,385 -4,295 -1.85 13,060 12.37 0.0011
2018-05-15 2018-03-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 232,680 -16,463 -6.61 11,622 -9.68 0.0010
2018-02-14 2017-12-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 249,143 28,815 13.08 12,868 4.96 0.0010
2017-11-14 2017-09-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 220,328 -3,018 -1.35 12,260 2.60 0.0011
2017-08-14 2017-06-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 223,346 11,691 5.52 11,949 11.75 0.0011
2017-05-15 2017-03-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 211,655 570 0.27 10,693 -7.30 0.0010
2017-02-09 2016-12-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 211,085 11,784 5.91 11,535 42.18 0.0011
2017-01-13 2016-09-30 13F/A-1 GREAT SOUTHERN BANCORP Common equity shares 390905107 199,301 7,016 3.65 8,113 14.17 0.0008
2016-11-14 2016-09-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 199,301 8,113
2016-08-12 2016-06-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 192,285 -888 -0.46 7,106 -0.93 0.0008
2016-05-20 2016-03-31 13F/A-1 GREAT SOUTHERN BANCORP Common equity shares 390905107 193,173 8,185 4.42 7,173 -14.32 0.0008
2016-05-12 2016-03-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 193,173 7,173
2016-02-16 2015-12-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 184,988 3 0.00 8,372 4.51 0.0009
2015-11-16 2015-09-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 184,985 5,305 2.95 8,011 5.76 0.0009
2015-08-13 2015-06-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 179,680 2,906 1.64 7,575 8.76 0.0008
2015-05-15 2015-03-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 176,774 2,259 1.29 6,965 0.53 0.0007
2015-02-11 2014-12-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 174,515 3,146 1.84 6,928 33.31 0.0007
2014-11-12 2014-09-30 13F/A-1 GREAT SOUTHERN BANCORP Common equity shares 390905107 171,369 8 0.00 5,197 -5.42 0.0006
2014-11-10 2014-09-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 171,369 5,197
2014-08-12 2014-06-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 171,361 -7,222 -4.04 5,495 2.46 0.0006
2014-05-15 2014-03-31 13F/A-1 GREAT SOUTHERN BANCORP Common equity shares 390905107 178,583 5,286 3.05 5,363 1.75 0.0006
2014-05-13 2014-03-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 178,583 5,363
2014-02-06 2013-12-31 13F/A-1 GREAT SOUTHERN BANCORP Common equity shares 390905107 173,297 365 0.21 5,271 8.03 0.0006
2014-02-06 2013-12-31 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 185,229 4,716
2013-11-12 2013-09-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 172,932 -2,438 -1.39 4,879 3.19 0.0006
2013-08-08 2013-06-30 13F GREAT SOUTHERN BANCORP Common equity shares 390905107 175,370 175,370 4,728 0.0006
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.