Lockheed Martin Corporation
MX ˙ BMV ˙ US5398301094
SecurityMX:LMT / Lockheed Martin Corporation
InstitutionMayflower Financial Advisors, LLC
Latest Disclosed Ownership2,298 shares
Latest Disclosed Value $ 1,388,816
Mayflower Financial Advisors, LLC reports 0.39% decrease in ownership of LMT / Lockheed Martin Corporation

On April 23, 2026 - Mayflower Financial Advisors, LLC filed a 13F-HR form disclosing ownership of 2,298 shares of Lockheed Martin Corporation (MX:LMT) valued at $1,388,816 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 2,307 shares of Lockheed Martin Corporation. This represents a change in shares of -0.39% 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)
2026-04-23 2026-03-31 13F LOCKHEED MARTIN COM 539830109 2,298 -9 -0.39 1,389 24.48 0.1686
2026-01-13 2025-12-31 13F LOCKHEED MARTIN COM 539830109 2,307 -13 -0.56 1,116 -3.71 0.1349
2025-10-17 2025-09-30 13F LOCKHEED MARTIN COM 539830109 2,320 -77 -3.21 1,158 4.32 0.1453
2025-08-04 2025-06-30 13F LOCKHEED MARTIN COM 539830109 2,397 -310 -11.45 1,110 -8.19 0.1544
2025-05-02 2025-03-31 13F LOCKHEED MARTIN COM 539830109 2,707 -963 -26.24 1,209 -32.19 0.1836
2025-01-22 2024-12-31 13F LOCKHEED MARTIN COM 539830109 3,670 305 9.06 1,783 -9.31 0.2662
2024-11-04 2024-09-30 13F LOCKHEED MARTIN COM 539830109 3,365 -39 -1.15 1,967 23.73 0.2960
2024-08-02 2024-06-30 13F LOCKHEED MARTIN COM 539830109 3,404 39 1.16 1,590 3.86 0.2610
2024-04-29 2024-03-31 13F LOCKHEED MARTIN COM 539830109 3,365 10 0.30 1,531 0.66 0.2559
2024-01-22 2023-12-31 13F LOCKHEED MARTIN COM 539830109 3,355 -22 -0.65 1,521 10.07 0.2100
2023-10-12 2023-09-30 13F LOCKHEED MARTIN COM 539830109 3,377 -60 -1.75 1,381 -12.71 0.2066
2023-07-13 2023-06-30 13F LOCKHEED MARTIN COM 539830109 3,437 -26 -0.75 1,582 -3.36 0.2048
2023-04-12 2023-03-31 13F LOCKHEED MARTIN COM 539830109 3,463 335 10.71 1,637 7.63 0.2151
2023-01-25 2022-12-31 13F/A-1 LOCKHEED MARTIN CORP COM Stock 539830109 3,128 -182 -5.50 1,522 18.92 0.2112
2022-10-19 2022-09-30 13F/A-1 LOCKHEED MARTIN COM 539830109 3,310 91 2.83 1,279 -7.59 0.2061
2022-10-17 2022-09-30 13F LOCKHEED MARTIN COM 539830109 517 -2,702 200 0.0488
2022-07-15 2022-06-30 13F LOCKHEED MARTIN CORP COM Stock 539830109 3,219 -157 -4.65 1,384 -7.11 0.2121
2022-04-21 2022-03-31 13F LOCKHEED MARTIN CORP COM Stock 539830109 3,376 66 1.99 1,490 26.70 0.2005
2022-01-21 2021-12-31 13F LOCKHEED MARTIN CORP COM Stock 539830109 3,310 -169 -4.86 1,176 -8.91 0.1562
2021-10-26 2021-09-30 13F LOCKHEED MARTIN CORP COM Stock 539830109 3,479 957 37.95 1,291 35.32 0.1743
2021-07-29 2021-06-30 13F LOCKHEED MARTIN COM 539830109 2,522 766 43.62 954 47.00 0.1312
2021-04-23 2021-03-31 13F LOCKHEED MARTIN COM 539830109 1,756 -122 -6.50 649 -2.70 0.0962
2021-04-12 2020-12-31 13F LOCKHEED MARTIN COM 539830109 1,878 1,878 667 0.1151
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.