Exxon Mobil Corporation
MX ˙ BMV ˙ US30231G1022
SecurityMX:XOM / Exxon Mobil Corporation
InstitutionMain Street Research LLC
Latest Disclosed Ownership23,924 shares
Latest Disclosed Value $ 4,058,946
Main Street Research LLC reports 3.08% increase in ownership of XOM / Exxon Mobil Corporation

On April 30, 2026 - Main Street Research LLC filed a 13F-HR form disclosing ownership of 23,924 shares of Exxon Mobil Corporation (MX:XOM) valued at $4,058,946 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 23,209 shares of Exxon Mobil Corporation. This represents a change in shares of 3.08% 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)
2026-04-30 2026-03-31 13F EXXON MOBIL COM 30231G102 23,924 715 3.08 4,059 45.34 0.2362
2026-02-09 2025-12-31 13F EXXON MOBIL COM 30231G102 23,209 -1,016 -4.19 2,793 2.23 0.1598
2025-11-13 2025-09-30 13F EXXON MOBIL COM 30231G102 24,225 2,241 10.19 2,731 15.28 0.1476
2025-08-05 2025-06-30 13F EXXON MOBIL COM 30231G102 21,984 -229,721 -91.27 2,370 -92.09 0.1475
2025-04-30 2025-03-31 13F EXXON MOBIL COM 30231G102 251,705 8,790 3.62 29,935 14.56 1.9560
2025-02-07 2024-12-31 13F EXXON MOBIL COM 30231G102 242,915 7,017 2.97 26,130 -5.50 1.6281
2024-11-12 2024-09-30 13F EXXON MOBIL COM 30231G102 235,898 6,844 2.99 27,652 4.87 1.7399
2024-07-29 2024-06-30 13F EXXON MOBIL COM 30231G102 229,054 9,874 4.50 26,369 3.52 1.7392
2024-05-01 2024-03-31 13F EXXON MOBIL COM 30231G102 219,180 8,510 4.04 25,472 20.94 1.7318
2024-01-30 2023-12-31 13F EXXON MOBIL COM 30231G102 210,670 191,748 1,013.36 21,063 847.03 1.6913
2023-11-03 2023-09-30 13F EXXON MOBIL COM 30231G102 18,922 0 0.00 2,225 9.61 0.2292
2023-08-08 2023-06-30 13F EXXON MOBIL COM 30231G102 18,922 -10,286 -35.22 2,029 -36.63 0.3234
2023-05-01 2023-03-31 13F EXXON MOBIL COM 30231G102 29,208 10,993 60.35 3,203 59.38 0.6324
2023-02-06 2022-12-31 13F EXXON MOBIL COM 30231G102 18,215 22 0.12 2,009 26.51 0.4892
2022-11-14 2022-09-30 13F EXXON MOBIL COM 30231G102 18,193 561 3.18 1,588 5.17 0.3498
2022-08-12 2022-06-30 13F EXXON MOBIL COM 30231G102 17,632 -920 -4.96 1,510 -1.44 0.3959
2022-05-05 2022-03-31 13F EXXON MOBIL COM 30231G102 18,552 257 1.40 1,532 36.91 0.1440
2022-02-09 2021-12-31 13F EXXON MOBIL COM 30231G102 18,295 -6,965 -27.57 1,119 -24.70 0.0864
2021-11-12 2021-09-30 13F EXXON MOBIL COM 30231G102 25,260 593 2.40 1,486 -4.50 0.1300
2021-08-06 2021-06-30 13F Exxon Mobil COM 30231G102 24,667 -228 -0.92 1,556 11.94 0.1249
2021-05-07 2021-03-31 13F Exxon Mobil COM 30231G102 24,895 4,938 24.74 1,390 68.89 0.1307
2021-02-12 2020-12-31 13F Exxon Mobil COM 30231G102 19,957 353 1.80 823 22.29 0.0885
2020-11-10 2020-09-30 13F Exxon Mobil COM 30231G102 19,604 -641 -3.17 673 -25.64 0.0857
2020-07-29 2020-06-30 13F Exxon Mobil COM 30231G102 20,245 -3,146 -13.45 905 1.91 0.1420
2020-05-01 2020-03-31 13F Exxon Mobil COM 30231G102 23,391 -14,523 -38.31 888 -66.44 0.2175
2020-01-28 2019-12-31 13F Exxon Mobil COM 30231G102 37,914 3,343 9.67 2,646 8.40 0.4172
2019-10-21 2019-09-30 13F Exxon Mobil COM 30231G102 34,571 -3,509 -9.21 2,441 -16.35 0.4579
2019-08-08 2019-06-30 13F Exxon Mobil COM 30231G102 38,080 -1,055 -2.70 2,918 -7.72 0.6565
2019-05-13 2019-03-31 13F Exxon Mobil COM 30231G102 39,135 447 1.16 3,162 19.86 1.0051
2019-02-13 2018-12-31 13F Exxon Mobil COM 30231G102 38,688 -1,404 -3.50 2,638 -22.62 1.0258
2018-11-05 2018-09-30 13F Exxon Mobil COM 30231G102 40,092 165 0.41 3,409 3.21 0.4895
2018-07-25 2018-06-30 13F Exxon Mobil COM 30231G102 39,927 728 1.86 3,303 12.92 0.5172
2018-05-08 2018-03-31 13F/A-1 Exxon Mobil COM 30231G102 39,199 -910 -2.27 2,925 -12.82 0.4629
2018-05-08 2018-03-31 13F Exxon Mobil COM 30231G102 40,109 0 3,355
2018-02-05 2017-12-31 13F Exxon Mobil COM 30231G102 40,109 -4,358 -9.80 3,355 -7.96 0.5106
2017-10-16 2017-09-30 13F Exxon Mobil COM 30231G102 44,467 -3,198 -6.71 3,645 -5.28 0.5882
2017-07-18 2017-06-30 13F Exxon Mobil COM 30231G102 47,665 808 1.72 3,848 0.13 0.6286
2017-05-04 2017-03-31 13F Exxon Mobil COM 30231G102 46,857 -338 -0.72 3,843 -9.79 0.6731
2017-02-03 2016-12-31 13F Exxon Mobil COM 30231G102 47,195 -90 -0.19 4,260 3.22 0.8295
2016-11-10 2016-09-30 13F Exxon Mobil COM 30231G102 47,285 -63 -0.13 4,127 -7.01 0.8067
2016-08-11 2016-06-30 13F Exxon Mobil COM 30231G102 47,348 1,745 3.83 4,438 16.42 0.9171
2016-05-13 2016-03-31 13F Exxon Mobil COM 30231G102 45,603 131 0.29 3,812 7.53 0.9830
2016-02-04 2015-12-31 13F Exxon Mobil COM 30231G102 45,472 -525 -1.14 3,545 -6.86 0.7575
2015-11-12 2015-09-30 13F Exxon Mobil COM 30231G102 45,997 -1,613 -3.39 3,806 -3.91 0.8928
2015-07-23 2015-06-30 13F Exxon Mobil COM 30231G102 47,610 -374 -0.78 3,961 -2.89 0.8112
2015-05-12 2015-03-31 13F Exxon Mobil COM 30231G102 47,984 -17,558 -26.79 4,079 -32.68 0.8773
2015-02-09 2014-12-31 13F Exxon Mobil COM 30231G102 65,542 -18,090 -21.63 6,059 -22.97 1.2975
2014-11-13 2014-09-30 13F Exxon Mobil COM 30231G102 83,632 -638 -0.76 7,866 -7.28 1.7514
2014-08-11 2014-06-30 13F Exxon Mobil COM 30231G102 84,270 1,295 1.56 8,484 4.68 2.0005
2014-05-12 2014-03-31 13F Exxon Mobil COM 30231G102 82,975 8 0.01 8,105 -3.47 1.9688
2014-02-06 2013-12-31 13F Exxon Mobil COM 30231G102 82,967 165 0.20 8,396 17.86 2.0963
2013-11-12 2013-09-30 13F Exxon Mobil COM 30231G102 82,802 21,246 34.51 7,124 28.08 1.9244
2013-08-01 2013-06-30 13F Exxon Mobil COM 30231G102 61,556 61,556 5,562 1.6796
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.