Exxon Mobil Corporation
MX ˙ BMV ˙ US30231G1022
SecurityMX:XOM / Exxon Mobil Corporation
InstitutionWestchester Capital Management, Inc.
Latest Disclosed Ownership120,573 shares
Latest Disclosed Value $ 20,456,415
Westchester Capital Management, Inc. reports 0.92% decrease in ownership of XOM / Exxon Mobil Corporation

On May 6, 2026 - Westchester Capital Management, Inc. filed a 13F-HR form disclosing ownership of 120,573 shares of Exxon Mobil Corporation (MX:XOM) valued at $20,456,415 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 121,688 shares of Exxon Mobil Corporation. This represents a change in shares of -0.92% during the quarter.

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)
2026-05-06 2026-03-31 13F Exxon Mobil common stock 30231G102 120,573 -1,115 -0.92 20,456 39.70 4.1199
2026-02-12 2025-12-31 13F Exxon Mobil common stock 30231G102 121,688 349 0.29 14,644 7.04 3.0272
2025-11-07 2025-09-30 13F Exxon Mobil common stock 30231G102 121,339 -2,189 -1.77 13,681 2.73 2.9411
2025-07-25 2025-06-30 13F Exxon Mobil common stock 30231G102 123,528 1,405 1.15 13,316 -8.32 3.1335
2025-05-09 2025-03-31 13F Exxon Mobil common stock 30231G102 122,123 557 0.46 14,524 11.07 3.6110
2025-02-10 2024-12-31 13F Exxon Mobil common stock 30231G102 121,566 1,224 1.02 13,077 -7.30 3.2891
2024-11-01 2024-09-30 13F Exxon Mobil common stock 30231G102 120,342 456 0.38 14,106 2.21 3.4264
2024-07-29 2024-06-30 13F Exxon Mobil common stock 30231G102 119,886 8 0.01 13,801 -0.95 3.4846
2024-05-03 2024-03-31 13F Exxon Mobil common stock 30231G102 119,878 -594 -0.49 13,935 15.69 3.4980
2024-01-29 2023-12-31 13F Exxon Mobil common stock 30231G102 120,472 1,731 1.46 12,045 -13.73 3.2420
2023-11-08 2023-09-30 13F Exxon Mobil common stock 30231G102 118,741 -276 -0.23 13,962 9.38 3.9989
2023-08-14 2023-06-30 13F Exxon Mobil common stock 30231G102 119,017 873 0.74 12,765 -1.47 3.5540
2023-05-15 2023-03-31 13F Exxon Mobil common stock 30231G102 118,144 -5,445 -4.41 12,956 -4.96 3.7258
2023-02-08 2022-12-31 13F Exxon Mobil common stock 30231G102 123,589 360 0.29 13,632 26.69 4.0118
2022-11-10 2022-09-30 13F Exxon Mobil common stock 30231G102 123,229 767 0.63 10,759 2.58 3.4703
2022-08-09 2022-06-30 13F Exxon Mobil common stock 30231G102 122,462 7,279 6.32 10,488 10.25 3.2014
2022-05-10 2022-03-31 13F Exxon Mobil common stock 30231G102 115,183 -557 -0.48 9,513 34.33 2.4534
2022-02-09 2021-12-31 13F Exxon Mobil common stock 30231G102 115,740 -2,291 -1.94 7,082 2.00 1.8082
2021-11-10 2021-09-30 13F Exxon Mobil common stock 30231G102 118,031 -125 -0.11 6,943 -6.84 1.9341
2021-08-04 2021-06-30 13F Exxon Mobil common stock 30231G102 118,156 -2,325 -1.93 7,453 10.81 2.0910
2021-05-07 2021-03-31 13F Exxon Mobil common stock 30231G102 120,481 -1,205 -0.99 6,726 34.09 1.9480
2021-02-08 2020-12-31 13F Exxon Mobil common stock 30231G102 121,686 -7,190 -5.58 5,016 13.38 1.5835
2020-11-13 2020-09-30 13F Exxon Mobil common stock 30231G102 128,876 -119 -0.09 4,424 -23.31 1.5702
2020-08-10 2020-06-30 13F Exxon Mobil common stock 30231G102 128,995 -6,376 -4.71 5,769 12.24 2.1757
2020-05-01 2020-03-31 13F Exxon Mobil common stock 30231G102 135,371 3,830 2.91 5,140 -44.00 2.2974
2020-02-05 2019-12-31 13F Exxon Mobil common stock 30231G102 131,541 6,508 5.21 9,179 3.96 3.1986
2019-11-05 2019-09-30 13F Exxon Mobil common stock 30231G102 125,033 1,140 0.92 8,829 -7.00 3.4628
2019-08-05 2019-06-30 13F Exxon Mobil common stock 30231G102 123,893 4,750 3.99 9,494 -1.38 3.7183
2019-05-07 2019-03-31 13F Exxon Mobil common stock 30231G102 119,143 275 0.23 9,627 18.76 4.1196
2019-02-11 2018-12-31 13F Exxon Mobil common stock 30231G102 118,868 -2,704 -2.22 8,106 -21.58 3.7672
2018-11-05 2018-09-30 13F Exxon Mobil common stock 30231G102 121,572 1,620 1.35 10,336 4.15 4.0961
2018-08-01 2018-06-30 13F Exxon Mobil common stock 30231G102 119,952 4,442 3.85 9,924 15.15 4.2189
2018-05-04 2018-03-31 13F Exxon Mobil common stock 30231G102 115,510 105,517 1,055.91 8,618 930.86 3.6374
2018-02-02 2017-12-31 13F Exxon Mobil common stock 30231G102 9,993 5,550 124.92 836 129.67 0.3440
2017-10-26 2017-09-30 13F Exxon Mobil common stock 30231G102 4,443 3,175 250.39 364 256.86 0.1561
2017-08-02 2017-06-30 13F Exxon Mobil common stock 30231G102 1,268 0 0.00 102 -1.92 0.0465
2017-05-03 2017-03-31 13F Exxon Mobil common stock 30231G102 1,268 0 0.00 104 -8.77 0.0499
2017-02-03 2016-12-31 13F Exxon Mobil common stock 30231G102 1,268 0 0.00 114 2.70 0.0569
2016-11-04 2016-09-30 13F Exxon Mobil common stock 30231G102 1,268 0 0.00 111 -6.72 0.0540
2016-08-04 2016-06-30 13F Exxon Mobil common stock 30231G102 1,268 0 0.00 119 12.26 0.0527
2016-05-20 2016-03-31 13F/A-1 Exxon Mobil common stock 30231G102 1,268 112 9.69 106 17.78 0.0477
2016-05-05 2016-03-31 13F Exxon Mobil common stock 30231G102 1,268 106
2016-02-09 2015-12-31 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 90 4.65 0.0444
2015-11-09 2015-09-30 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 86 -10.42 0.0460
2015-08-04 2015-06-30 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 96 -2.04 0.0458
2015-05-05 2015-03-31 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 98 -8.41 0.0484
2015-02-06 2014-12-31 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 107 -1.83 0.0514
2014-11-10 2014-09-30 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 109 -6.03 0.0516
2014-09-16 2014-06-30 13F/A-1 Exxon Mobil common stock 30231G102 1,156 0 0.00 116 2.65 0.0546
2014-07-11 2014-06-30 13F Exxon Mobil common stock 30231G102 1,156 116
2014-05-02 2014-03-31 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 113 -3.42 0.0567
2014-01-24 2013-12-31 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 117 18.18 0.0628
2013-10-28 2013-09-30 13F Exxon Mobil common stock 30231G102 1,156 0 0.00 99 -4.81 0.0614
2013-08-12 2013-06-30 13F Exxon Mobil common stock 30231G102 1,156 1,156 104 0.0659
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.