Lockheed Martin Corporation
US ˙ NYSE ˙ US5398301094

SecurityLMT / Lockheed Martin Corporation
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership21,234 shares
Latest Disclosed Value $ 12,833,569
Summit Trail Advisors, Llc reports 6.35% increase in ownership of LMT / Lockheed Martin Corporation

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 21,234 shares of Lockheed Martin Corporation (US:LMT) valued at $12,833,617 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,967 shares of Lockheed Martin Corporation. This represents a change in shares of 6.35% during the quarter. The current value of the position is $10,872,445 USD.

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)
2026-05-12 2026-03-31 13F LOCKHEED MARTIN COM 539830109 21,234 1,267 6.35 12,834 32.89 0.1839
2026-02-17 2025-12-31 13F LOCKHEED MARTIN COM 539830109 19,967 237 1.20 9,657 -1.95 0.1670
2025-11-14 2025-09-30 13F LOCKHEED MARTIN COM 539830109 19,730 -1,296 -6.16 9,849 1.15 0.1360
2025-08-14 2025-06-30 13F LOCKHEED MARTIN COM 539830109 21,026 21,026 9,738 0.1671
2025-01-29 2024-12-31 13F LOCKHEED MARTIN COM 539830109 0 -17,931 -100.00 0 -100.00
2024-11-12 2024-09-30 13F LOCKHEED MARTIN COM 539830109 17,931 -2,649 -12.87 10,482 9.04 0.2599
2024-08-13 2024-06-30 13F Lockheed Martin Corp Com COM 539830109 20,580 13,348 184.57 9,613 192.25 0.2527
2024-04-23 2024-03-31 13F LOCKHEED MARTIN COM 539830109 7,232 3,602 99.23 3,290 99.94 0.0874
2024-02-06 2023-12-31 13F LOCKHEED MARTIN COM 539830109 3,630 -112 -2.99 1,645 7.52 0.0544
2023-10-30 2023-09-30 13F LOCKHEED MARTIN COM 539830109 3,742 33 0.89 1,530 -10.37 0.0563
2023-07-25 2023-06-30 13F LOCKHEED MARTIN COM 539830109 3,709 1,662 81.19 1,707 76.53 0.0644
2023-05-04 2023-03-31 13F LOCKHEED MARTIN COM 539830109 2,047 269 15.13 967 11.79 0.0390
2023-02-07 2022-12-31 13F Lockheed Martin Corp Com COM 539830109 1,778 -177 -9.05 865 14.57 0.0384
2022-11-10 2022-09-30 13F Lockheed Martin Corp Com Stock 539830109 1,955 -113 -5.46 755 -15.07 0.0408
2022-08-09 2022-06-30 13F Lockheed Martin Corp Com COM 539830109 2,068 79 3.97 889 1.25 0.0550
2022-05-16 2022-03-31 13F Lockheed Martin Corp Com EQUITY 539830109 1,989 127 6.82 878 32.63 0.0710
2022-02-11 2021-12-31 13F Lockheed Martin Corp Com Equity 539830109 1,862 -469 -20.12 662 -17.66 0.0427
2021-11-16 2021-09-30 13F Lockheed Martin Corp Com COM 539830109 2,331 282 13.76 804 3.74 0.0603
2021-08-16 2021-06-30 13F Lockheed Martin Corp Com Equity 539830109 2,049 192 10.34 775 12.97 0.0679
2021-05-17 2021-03-31 13F LOCKHEED MARTIN Equity 539830109 1,857 543 41.32 686 46.90 0.0740
2021-02-16 2020-12-31 13F LOCKHEED MARTIN Equity 539830109 1,314 -292 -18.18 467 -20.98 0.0589
2020-11-16 2020-09-30 13F/A-1 Lockheed Martin Corp Com Equity 539830109 1,606 323 25.18 591 26.28 0.1143
2020-08-13 2020-06-30 13F Lockheed Martin Corp Com Equity 539830109 1,283 -71 -5.24 468 1.96 0.0873
2020-05-15 2020-03-31 13F Lockheed Martin Corp Com Equity 539830109 1,354 1,354 459 0.1235
2020-02-13 2019-12-31 13F Lockheed Martin Corp Com Equity 539830109 0 -901 -100.00 0 -100.00
2019-11-14 2019-09-30 13F Lockheed Martin Corp Com Equity 539830109 901 173 23.76 352 32.83 0.1251
2019-08-08 2019-06-30 13F LOCKHEED MARTIN CORP COM EQUITY 539830109 728 728 265 0.1159
2018-08-10 2018-06-30 13F LOCKHEED MARTIN CORP COM EQUITY 539830109 0 -1,570 -100.00 0 -100.00
2018-05-22 2018-03-31 13F/A-1 LOCKHEED MARTIN CORP COM EQUITY 539830109 1,570 102 6.95 484 0.21 0.0821
2018-05-21 2018-03-31 13F LOCKHEED MARTIN CORP COM EQUITY 539830109 483,748 482,280 484
2018-02-14 2017-12-31 13F LOCKHEED MARTIN EQUITY 539830109 1,468 1,468 483 0.0610
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.