SandRidge Energy, Inc.
US ˙ NYSE ˙ US80007P8692

SecuritySD / SandRidge Energy, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership55,017 shares
Latest Disclosed Value $ 897,317
Rhumbline Advisers reports 11.01% decrease in ownership of SD / SandRidge Energy, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 55,017 shares of SandRidge Energy, Inc. (US:SD) valued at $897,327 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 61,827 shares of SandRidge Energy, Inc.. This represents a change in shares of -11.01% during the quarter. The current value of the position is $814,802 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)
2026-05-12 2026-03-31 13F SANDRIDGE ENERGY COM 80007P869 55,017 -6,810 -11.01 897 0.56 0.0008
2026-02-13 2025-12-31 13F SANDRIDGE ENERGY COM 80007P869 61,827 -8,703 -12.34 892 12.20 0.0007
2025-11-06 2025-09-30 13F SANDRIDGE ENERGY COM 80007P869 70,530 -3,293 -4.46 796 -0.38 0.0006
2025-08-12 2025-06-30 13F SANDRIDGE ENERGY COM 80007P869 73,823 -3,713 -4.79 799 -9.83 0.0007
2025-05-29 2025-03-31 13F/A-1 SANDRIDGE ENERGY COM 80007P869 77,536 1,421 1.87 885 -0.67 0.0008
2025-04-08 2025-03-31 13F SANDRIDGE ENERGY COM 80007P869 77,536 1,421 885 0.0008
2025-05-29 2024-12-31 13F/A-1 SANDRIDGE ENERGY COM 80007P869 76,115 -821 -1.07 891 -5.21 0.0008
2025-01-30 2024-12-31 13F SANDRIDGE ENERGY COM 80007P869 76,115 -821 891 0.0008
2024-11-12 2024-09-30 13F SANDRIDGE ENERGY COM 80007P869 76,936 -648 -0.84 941 -6.28 0.0008
2024-08-01 2024-06-30 13F SANDRIDGE ENERGY COM 80007P869 77,584 431 0.56 1,003 -10.77 0.0009
2024-05-09 2024-03-31 13F SANDRIDGE ENERGY COM 80007P869 77,153 1,084 1.43 1,124 8.18 0.0011
2024-02-08 2023-12-31 13F SANDRIDGE ENERGY COM 80007P869 76,069 -3,756 -4.71 1,040 -16.88 0.0011
2023-11-09 2023-09-30 13F SANDRIDGE ENERGY COM 80007P869 79,825 -113 -0.14 1,250 2.54 0.0015
2023-08-08 2023-06-30 13F SANDRIDGE ENERGY COM 80007P869 79,938 23,903 42.66 1,219 0.0014
2023-05-11 2023-03-31 13F SANDRIDGE ENERGY COM 80007P869 56,035 -1,355 -2.36 1 -100.00 0.0010
2023-02-14 2022-12-31 13F SANDRIDGE ENERGY COM 80007P869 57,390 1,725 3.10 977 7.60 0.0013
2022-11-10 2022-09-30 13F SANDRIDGE ENERGY COM 80007P869 55,665 4,013 7.77 908 12.24 0.0014
2022-08-11 2022-06-30 13F SANDRIDGE ENERGY COM 80007P869 51,652 51,652 809 0.0012
2020-08-13 2020-06-30 13F SANDRIDGE ENERGY COM 80007P869 0 -54,559 -100.00 0 -100.00
2020-05-06 2020-03-31 13F SANDRIDGE ENERGY COM 80007P869 54,559 4,430 8.84 49 -77.00 0.0001
2020-02-05 2019-12-31 13F SANDRIDGE ENERGY COM 80007P869 50,129 -1,034 -2.02 213 -11.25 0.0004
2019-10-23 2019-09-30 13F SANDRIDGE ENERGY COM 80007P869 51,163 5,401 11.80 240 -24.29 0.0004
2019-08-14 2019-06-30 13F SANDRIDGE ENERGY COM 80007P869 45,762 526 1.16 317 -12.67 0.0006
2019-05-01 2019-03-31 13F SANDRIDGE ENERGY COM 80007P869 45,236 -476 -1.04 363 4.31 0.0007
2019-01-31 2018-12-31 13F SANDRIDGE ENERGY COM 80007P869 45,712 13,501 41.91 348 -0.57 0.0008
2018-11-07 2018-09-30 13F SANDRIDGE ENERGY COM 80007P869 32,211 -30 -0.09 350 -38.81 0.0007
2018-08-06 2018-06-30 13F SANDRIDGE ENERGY COM 80007P869 32,241 -3,567 -9.96 572 10.00 0.0012
2018-05-02 2018-03-31 13F SANDRIDGE ENERGY COM 80007P869 35,808 -1,382 -3.72 520 -33.67 0.0011
2018-02-09 2017-12-31 13F SANDRIDGE ENERGY COM 80007P869 37,190 -5,960 -13.81 784 -9.57 0.0016
2017-11-06 2017-09-30 13F SANDRIDGE ENERGY COM 80007P869 43,150 449 1.05 867 17.96 0.0019
2017-08-02 2017-06-30 13F SANDRIDGE ENERGY COM 80007P869 42,701 42,701 735 0.0017
2016-08-11 2016-06-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 0 -25,977 -100.00 0 -100.00
2016-05-02 2016-03-31 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 25,977 -624,616 -96.01 1 -99.23 0.0000
2016-02-03 2015-12-31 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 650,593 78,945 13.81 130 -15.58 0.0004
2015-11-04 2015-09-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 571,648 21,940 3.99 154 -68.05 0.0005
2015-08-04 2015-06-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 549,708 233,933 74.08 482 -14.23 0.0015
2015-05-12 2015-03-31 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 315,775 -4,950 -1.54 562 -3.77 0.0016
2015-02-06 2014-12-31 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 320,725 2,403 0.75 584 -57.25 0.0017
2014-11-12 2014-09-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 318,322 -2,683 -0.84 1,366 -40.48 0.0041
2014-08-06 2014-06-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 321,005 1,477 0.46 2,295 16.97 0.0067
2014-05-06 2014-03-31 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 319,528 -8,890 -2.71 1,962 -1.56 0.0058
2014-02-03 2013-12-31 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 328,418 -32,079 -8.90 1,993 -5.68 0.0059
2013-11-05 2013-09-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 360,497 -1,152 -0.32 2,113 22.78 0.0065
2013-08-07 2013-06-30 13F SANDRIDGE ENERGY INC COMMON ST COM 80007P307 361,649 361,649 1,721 0.0055
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.