Exxon Mobil Corporation
MX ˙ BMV ˙ US30231G1022
SecurityMX:XOM / Exxon Mobil Corporation
InstitutionCastleark Management Llc
Latest Disclosed Ownership64,460 shares
Latest Disclosed Value $ 10,936,284
Castleark Management Llc ownership in XOM / Exxon Mobil Corporation

On May 15, 2026 - Castleark Management Llc filed a 13F-HR form disclosing ownership of 64,460 shares of Exxon Mobil Corporation (MX:XOM) valued at $10,936,284 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 15, 2025 disclosing 0 shares of Exxon Mobil Corporation.

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 EXXON MOBIL COM 30231G102 64,460 64,460 10,936 0.3619
2025-05-15 2025-03-31 13F EXXON MOBIL COM 30231G102 0 -36,610 -100.00 0 -100.00
2025-02-18 2024-12-31 13F EXXON MOBIL COM 30231G102 36,610 -7,590 -17.17 3,938 -23.99 0.1374
2024-11-15 2024-09-30 13F EXXON MOBIL COM 30231G102 44,200 26,430 148.73 5,181 153.35 0.2112
2024-08-14 2024-06-30 13F EXXON MOBIL COM 30231G102 17,770 -160,530 -90.03 2,046 -90.13 0.0836
2024-05-16 2024-03-31 13F EXXON MOBIL COM 30231G102 178,300 52,100 41.28 20,726 64.26 0.8622
2024-02-15 2023-12-31 13F EXXON MOBIL COM 30231G102 126,200 48,720 62.88 12,617 38.50 0.5593
2023-11-15 2023-09-30 13F EXXON MOBIL COM 30231G102 77,480 -31,950 -29.20 9,110 -22.38 0.4642
2023-08-16 2023-06-30 13F EXXON MOBIL COM 30231G102 109,430 -108,980 -49.90 11,736 -51.00 0.5316
2023-05-16 2023-03-31 13F EXXON MOBIL COM 30231G102 218,410 104,870 92.36 23,951 91.25 1.1765
2023-02-10 2022-12-31 13F EXXON MOBIL COM 30231G102 113,540 113,540 12,523 0.6542
2022-08-15 2022-06-30 13F EXXON MOBIL COM 30231G102 0 -46,000 -100.00 0 -100.00
2022-05-16 2022-03-31 13F EXXON MOBIL COM 30231G102 46,000 46,000 3,799 0.1639
2021-11-11 2021-09-30 13F EXXON MOBIL COM 30231G102 0 -29,350 -100.00 0 -100.00
2021-08-17 2021-06-30 13F EXXON MOBIL COM 30231G102 29,350 -10,600 -26.53 1,851 -17.00 0.0622
2021-05-14 2021-03-31 13F EXXON MOBIL COM 30231G102 39,950 -24,470 -37.99 2,230 -16.01 0.0803
2021-02-17 2020-12-31 13F EXXON MOBIL COM 30231G102 64,420 64,420 2,655 0.0994
2020-05-13 2020-03-31 13F EXXON MOBIL COM 30231G102 0 -80,330 -100.00 0 -100.00
2020-02-14 2019-12-31 13F EXXON MOBIL COM 30231G102 80,330 25,080 45.39 5,605 43.68 0.2243
2019-11-15 2019-09-30 13F EXXON MOBIL COM 30231G102 55,250 -55,690 -50.20 3,901 -54.11 0.1591
2019-08-13 2019-06-30 13F EXXON MOBIL COM 30231G102 110,940 65,410 143.66 8,501 131.07 0.3261
2019-05-14 2019-03-31 13F EXXON MOBIL COM 30231G102 45,530 -77,720 -63.06 3,679 -56.22 0.1385
2019-02-12 2018-12-31 13F EXXON MOBIL COM 30231G102 123,250 51,400 71.54 8,404 37.57 0.3581
2018-11-14 2018-09-30 13F EXXON MOBIL COM 30231G102 71,850 35,040 95.19 6,109 100.62 0.1755
2018-08-15 2018-06-30 13F EXXON MOBIL COM 30231G102 36,810 36,810 3,045 0.0937
2017-11-14 2017-09-30 13F EXXON MOBIL COM 30231G102 0 -42,430 -100.00 0 -100.00
2017-08-15 2017-06-30 13F EXXON MOBIL COM 30231G102 42,430 -54,210 -56.09 3,425 -56.78 0.1119
2017-05-15 2017-03-31 13F EXXON MOBIL COM 30231G102 96,640 -270 -0.28 7,925 -9.40 0.2483
2017-02-15 2016-12-31 13F EXXON MOBIL COM 30231G102 96,910 0 0.00 8,747 3.42 0.2790
2016-11-15 2016-09-30 13F EXXON MOBIL COM 30231G102 96,910 0 0.00 8,458 -6.89 0.2558
2016-08-10 2016-06-30 13F EXXON MOBIL COM 30231G102 96,910 -94,190 -49.29 9,084 -43.13 0.2898
2016-05-17 2016-03-31 13F EXXON MOBIL COM 30231G102 191,100 63,700 50.00 15,974 60.85 0.4989
2016-02-17 2015-12-31 13F EXXON MOBIL COM 30231G102 127,400 -900 -0.70 9,931 4.11 0.2984
2015-11-17 2015-09-30 13F EXXON MOBIL COM 30231G102 128,300 0 0.00 9,539 -10.64 0.3070
2015-08-17 2015-06-30 13F EXXON MOBIL COM 30231G102 128,300 18,000 16.32 10,675 13.85 0.2852
2015-05-15 2015-03-31 13F EXXON MOBIL COM 30231G102 110,300 -50,400 -31.36 9,376 -36.89 0.2261
2015-02-10 2014-12-31 13F EXXON MOBIL COM 30231G102 160,700 24,100 17.64 14,857 11.35 0.3828
2014-11-17 2014-09-30 13F EXXON MOBIL COM 30231G102 136,600 0 0.00 13,343 -2.98 0.3794
2014-08-15 2014-06-30 13F EXXON MOBIL COM 30231G102 136,600 0 0.00 13,753 3.07 0.3790
2014-05-20 2014-03-31 13F EXXON MOBIL COM 30231G102 136,600 117,300 607.77 13,343 583.21 0.3794
2014-02-20 2013-12-31 13F EXXON MOBIL COM 30231G102 19,300 -49,600 -71.99 1,953 -69.86 0.0567
2014-11-21 2013-09-30 13F/A-1 EXXON MOBIL COM 30231G102 68,900 14,680 27.07 6,480 32.27 0.1827
2013-11-20 2013-09-30 13F EXXON MOBIL COM 30231G102 19,300 1,661
2013-09-26 2013-06-30 13F EXXON MOBIL COM 30231G102 54,220 54,220 4,899 0.1625
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.