Lockheed Martin Corporation
MX ˙ BMV ˙ US5398301094
SecurityMX:LMT / Lockheed Martin Corporation
InstitutionRbo & Co Llc
Latest Disclosed Ownership20,359 shares
Latest Disclosed Value $ 12,304,595
Rbo & Co Llc reports 15.09% decrease in ownership of LMT / Lockheed Martin Corporation

On May 14, 2026 - Rbo & Co Llc filed a 13F-HR form disclosing ownership of 20,359 shares of Lockheed Martin Corporation (MX:LMT) valued at $12,304,595 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 23,977 shares of Lockheed Martin Corporation. This represents a change in shares of -15.09% 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)
2026-05-14 2026-03-31 13F LOCKHEED MARTIN com 539830109 20,359 -3,618 -15.09 12,305 6.11 1.9859
2026-02-12 2025-12-31 13F LOCKHEED MARTIN com 539830109 23,977 0 0.00 11,597 -3.12 1.8455
2025-11-12 2025-09-30 13F LOCKHEED MARTIN com 539830109 23,977 0 0.00 11,969 7.79 1.8723
2025-08-12 2025-06-30 13F LOCKHEED MARTIN com 539830109 23,977 0 0.00 11,105 3.68 1.7804
2025-05-14 2025-03-31 13F LOCKHEED MARTIN com 539830109 23,977 -1,057 -4.22 10,711 -11.95 1.7095
2025-02-14 2024-12-31 13F LOCKHEED MARTIN com 539830109 25,034 -5,356 -17.62 12,165 -31.52 1.9838
2024-11-13 2024-09-30 13F LOCKHEED MARTIN com 539830109 30,390 19 0.06 17,765 25.22 2.8015
2024-08-12 2024-06-30 13F LOCKHEED MARTIN com 539830109 30,371 -438 -1.42 14,186 1.23 2.5321
2024-05-14 2024-03-31 13F LOCKHEED MARTIN com 539830109 30,809 -113 -0.37 14,014 -0.01 2.3399
2024-02-13 2023-12-31 13F LOCKHEED MARTIN com 539830109 30,922 -1,658 -5.09 14,015 5.19 2.4043
2023-11-13 2023-09-30 13F LOCKHEED MARTIN com 539830109 32,580 -426 -1.29 13,324 -12.32 2.4205
2023-08-11 2023-06-30 13F LOCKHEED MARTIN com 539830109 33,006 -1,343 -3.91 15,195 -6.42 2.5829
2023-05-12 2023-03-31 13F LOCKHEED MARTIN com 539830109 34,349 -608 -1.74 16,238 -4.52 2.8276
2023-02-13 2022-12-31 13F LOCKHEED MARTIN com 539830109 34,957 -369 -1.04 17,006 24.62 3.0072
2022-11-14 2022-09-30 13F LOCKHEED MARTIN com 539830109 35,326 -1,351 -3.68 13,646 -13.47 2.7107
2022-08-10 2022-06-30 13F LOCKHEED MARTIN com 539830109 36,677 -756 -2.02 15,770 -4.56 2.8903
2022-05-16 2022-03-31 13F LOCKHEED MARTIN com 539830109 37,433 -611 -1.61 16,523 22.20 2.6994
2022-05-16 2021-12-31 13F/A-1 LOCKHEED MARTIN com 539830109 38,044 94 0.25 13,521 3.24 2.1272
2022-02-14 2021-12-31 13F LOCKHEED MARTIN com 539830109 38,044 94 13,521 2.1272
2021-11-12 2021-09-30 13F LOCKHEED MARTIN com 539830109 37,950 0 0.00 13,097 -8.78 2.2982
2021-08-06 2021-06-30 13F LOCKHEED MARTIN com 539830109 37,950 -520 -1.35 14,358 1.01 2.5074
2021-05-17 2021-03-31 13F LOCKHEED MARTIN com 539830109 38,470 580 1.53 14,215 5.69 2.5962
2021-02-16 2020-12-31 13F LOCKHEED MARTIN com 539830109 37,890 4,694 14.14 13,450 5.71 2.7060
2020-11-13 2020-09-30 13F LOCKHEED MARTIN com 539830109 33,196 50 0.15 12,723 5.18 2.8261
2020-08-12 2020-06-30 13F LOCKHEED MARTIN com 539830109 33,146 -13 -0.04 12,096 7.63 2.9218
2020-05-13 2020-03-31 13F LOCKHEED MARTIN com 539830109 33,159 1,055 3.29 11,239 -10.10 3.0229
2020-02-13 2019-12-31 13F LOCKHEED MARTIN com 539830109 32,104 -702 -2.14 12,501 -2.31 2.7554
2019-11-12 2019-09-30 13F LOCKHEED MARTIN com 539830109 32,806 -1,315 -3.85 12,796 3.16 3.0268
2019-08-12 2019-06-30 13F LOCKHEED MARTIN com 539830109 34,121 -3 -0.01 12,404 21.10 2.9086
2019-05-13 2019-03-31 13F LOCKHEED MARTIN com 539830109 34,124 0 0.00 10,243 14.64 2.4606
2019-02-13 2018-12-31 13F LOCKHEED MARTIN com 539830109 34,124 -34 -0.10 8,935 -24.39 2.3504
2018-11-14 2018-09-30 13F LOCKHEED MARTIN com 539830109 34,158 -38 -0.11 11,817 16.97 2.8244
2018-08-13 2018-06-30 13F LOCKHEED MARTIN com 539830109 34,196 -6 -0.02 10,103 -12.59 2.5384
2018-05-11 2018-03-31 13F LOCKHEED MARTIN com 539830109 34,202 -133 -0.39 11,558 4.85 2.9360
2018-02-12 2017-12-31 13F LOCKHEED MARTIN com 539830109 34,335 -51 -0.15 11,023 3.31 2.7707
2017-11-13 2017-09-30 13F LOCKHEED MARTIN com 539830109 34,386 0 0.00 10,670 11.77 2.7794
2017-08-08 2017-06-30 13F LOCKHEED MARTIN com 539830109 34,386 -185 -0.54 9,546 3.19 2.5777
2017-05-09 2017-03-31 13F LOCKHEED MARTIN com 539830109 34,571 0 0.00 9,251 7.06 2.5937
2017-02-10 2016-12-31 13F LOCKHEED MARTIN com 539830109 34,571 -7,827 -18.46 8,641 -14.98 2.5571
2016-11-14 2016-09-30 13F LOCKHEED MARTIN com 053983010 42,398 -415 -0.97 10,164 -4.34 3.0523
2016-08-12 2016-06-30 13F LOCKHEED MARTIN com 053983010 42,813 -123 -0.29 10,625 11.72 3.1316
2016-09-02 2016-03-31 13F/A-1 LOCKHEED MARTIN com 053983010 42,936 -210 -0.49 9,510 1.50 2.8468
2016-05-10 2016-03-31 13F LOCKHEED MARTIN com 053983010 42,936 9,510
2016-02-09 2015-12-31 13F LOCKHEED MARTIN com 053983010 43,146 36 0.08 9,369 4.83 2.8691
2015-11-12 2015-09-30 13F LOCKHEED MARTIN com 053983010 43,110 -45 -0.10 8,937 11.41 3.0214
2015-08-12 2015-06-30 13F LOCKHEED MARTIN com 053983010 43,155 -128 -0.30 8,022 -8.69 2.6195
2015-05-13 2015-03-31 13F LOCKHEED MARTIN com 053983010 43,283 -6,414 -12.91 8,785 -8.20 2.8919
2015-02-10 2014-12-31 13F LOCKHEED MARTIN com 053983010 49,697 -630 -1.25 9,570 4.03 3.1398
2014-11-12 2014-09-30 13F LOCKHEED MARTIN com 053983010 50,327 -100 -0.20 9,199 13.50 3.3231
2014-08-08 2014-06-30 13F LOCKHEED MARTIN com 053983010 50,427 0 0.00 8,105 -1.54 2.8694
2014-05-13 2014-03-31 13F LOCKHEED MARTIN com 053983010 50,427 -2,179 -4.14 8,232 5.27 3.0499
2014-02-12 2013-12-31 13F LOCKHEED MARTIN com 053983010 52,606 -15 -0.03 7,820 16.51 3.0175
2013-11-08 2013-09-30 13F LOCKHEED MARTIN com 053983010 52,621 -2,800 -5.05 6,712 11.66 2.8790
2013-08-01 2013-06-30 13F LOCKHEED MARTIN com 053983010 55,421 55,421 6,011 2.6505
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.