Lockheed Martin Corporation
MX ˙ BMV ˙ US5398301094
SecurityMX:LMT / Lockheed Martin Corporation
InstitutionCornerstone Advisory, LLC
Latest Disclosed Ownership810 shares
Latest Disclosed Value $ 489,569
Cornerstone Advisory, LLC reports 4.52% increase in ownership of LMT / Lockheed Martin Corporation

On May 4, 2026 - Cornerstone Advisory, LLC filed a 13F-HR form disclosing ownership of 810 shares of Lockheed Martin Corporation (MX:LMT) valued at $489,569 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 775 shares of Lockheed Martin Corporation. This represents a change in shares of 4.52% 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)
2026-05-04 2026-03-31 13F LOCKHEED MARTIN COM 539830109 810 35 4.52 490 30.75 0.0464
2026-01-28 2025-12-31 13F LOCKHEED MARTIN COM 539830109 775 -25 -3.12 375 -6.27 0.0358
2025-11-07 2025-09-30 13F LOCKHEED MARTIN COM 539830109 800 -22 -2.68 399 5.00 0.0392
2025-07-30 2025-06-30 13F LOCKHEED MARTIN COM 539830109 822 -375 -31.33 381 -32.14 0.0409
2025-05-07 2025-03-31 13F LOCKHEED MARTIN COM 539830109 1,197 -222 -15.64 561 -6.67 0.0654
2025-02-18 2024-12-31 13F LOCKHEED MARTIN COM 539830109 1,419 -112 -7.32 600 -32.89 0.0682
2024-11-12 2024-09-30 13F LOCKHEED MARTIN COM 539830109 1,531 15 0.99 895 26.45 0.1177
2024-08-14 2024-06-30 13F LOCKHEED MARTIN COM 539830109 1,516 -484 -24.20 708 -22.22 0.0996
2024-05-08 2024-03-31 13F LOCKHEED MARTIN COM 539830109 2,000 -93 -4.44 910 -4.11 0.1297
2024-02-13 2023-12-31 13F LOCKHEED MARTIN COM 539830109 2,093 128 6.51 949 18.06 0.1479
2023-11-14 2023-09-30 13F LOCKHEED MARTIN COM 539830109 1,965 4 0.20 804 -10.98 0.1406
2023-07-20 2023-06-30 13F LOCKHEED MARTIN COM 539830109 1,961 -342 -14.85 903 -17.10 0.1586
2023-05-04 2023-03-31 13F LOCKHEED MARTIN COM 539830109 2,303 13 0.57 1,089 -2.33 0.1960
2023-02-13 2022-12-31 13F LOCKHEED MARTIN COM 539830109 2,290 2 0.09 1,114 26.02 0.2196
2022-10-26 2022-09-30 13F LOCKHEED MARTIN COM 539830109 2,288 -50 -2.14 884 -12.04 0.1974
2022-08-02 2022-06-30 13F LOCKHEED MARTIN COM 539830109 2,338 -1,982 -45.88 1,005 -47.30 0.2299
2022-05-20 2022-03-31 13F LOCKHEED MARTIN COM 539830109 4,320 113 2.69 1,907 27.47 0.2908
2022-02-23 2021-12-31 13F LOCKHEED MARTIN COM 539830109 4,207 -1,080 -20.43 1,496 -18.03 0.2150
2021-11-16 2021-09-30 13F LOCKHEED MARTIN COM 539830109 5,287 1 0.02 1,825 -8.75 0.3022
2021-08-16 2021-06-30 13F LOCKHEED MARTIN COM 539830109 5,286 -50 -0.94 2,000 1.42 0.3369
2021-05-13 2021-03-31 13F LOCKHEED MARTIN COM 539830109 5,336 2,079 63.83 1,972 70.59 0.3732
2021-05-11 2020-12-31 13F LOCKHEED MARTIN COM 539830109 3,257 50 1.56 1,156 -5.94 0.2340
2020-11-12 2020-09-30 13F LOCKHEED MARTIN COM 539830109 3,207 1,600 99.56 1,229 109.37 0.2867
2020-08-10 2020-06-30 13F LOCKHEED MARTIN COM 539830109 1,607 646 67.22 587 80.06 0.1531
2020-05-11 2020-03-31 13F LOCKHEED MARTIN COM 539830109 961 48 5.26 326 -8.43 0.0991
2020-02-12 2019-12-31 13F LOCKHEED MARTIN COM 539830109 913 300 48.94 356 48.95 0.0737
2019-11-12 2019-09-30 13F LOCKHEED MARTIN COM 539830109 613 21 3.55 239 11.16 0.0516
2019-08-08 2019-06-30 13F LOCKHEED MARTIN COM 539830109 592 592 215 0.0466
2019-02-12 2018-12-31 13F LOCKHEED MARTIN COM 539830109 0 -615 -100.00 0 -100.00
2018-11-13 2018-09-30 13F LOCKHEED MARTIN COM 539830109 615 615 213 0.0632
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.