Lockheed Martin Corporation
US ˙ NYSE ˙ US5398301094

SecurityLMT / Lockheed Martin Corporation
InstitutionAssetmark, Inc
Latest Disclosed Ownership7,264 shares
Latest Disclosed Value $ 4,390,250
Assetmark, Inc reports 13.80% increase in ownership of LMT / Lockheed Martin Corporation

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 7,264 shares of Lockheed Martin Corporation (US:LMT) valued at $4,390,289 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 6,383 shares of Lockheed Martin Corporation. This represents a change in shares of 13.80% during the quarter. The current value of the position is $3,719,386 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-06 2026-03-31 13F LOCKHEED MARTIN COM 539830109 7,264 881 13.80 4,390 42.21 0.0090
2026-01-23 2025-12-31 13F LOCKHEED MARTIN COM 539830109 6,383 168 2.70 3,087 -0.48 0.0063
2025-11-06 2025-09-30 13F LOCKHEED MARTIN COM 539830109 6,215 4,026 183.92 3,103 206.22 0.0067
2025-08-04 2025-06-30 13F LOCKHEED MARTIN COM 539830109 2,189 492 28.99 1,014 33.82 0.0024
2025-05-06 2025-03-31 13F LOCKHEED MARTIN COM 539830109 1,697 -89 -4.98 758 -12.79 0.0021
2025-02-06 2024-12-31 13F LOCKHEED MARTIN COM 539830109 1,786 316 21.50 868 1.05 0.0024
2024-11-01 2024-09-30 13F LOCKHEED MARTIN COM 539830109 1,470 19 1.31 859 26.88 0.0025
2024-08-13 2024-06-30 13F LOCKHEED MARTIN COM 539830109 1,451 -81 -5.29 678 -2.73 0.0021
2024-05-07 2024-03-31 13F LOCKHEED MARTIN COM 539830109 1,532 288 23.15 697 23.62 0.0023
2024-02-09 2023-12-31 13F LOCKHEED MARTIN COM 539830109 1,244 -153 -10.95 564 -1.40 0.0020
2023-10-27 2023-09-30 13F LOCKHEED MARTIN COM 539830109 1,397 77 5.83 571 -5.93 0.0023
2023-08-11 2023-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 1,320 -203 -13.33 608 -15.69 0.0024
2023-05-05 2023-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 1,523 -32 -2.06 720 -4.76 0.0030
2023-02-10 2022-12-31 13F LOCKHEED MARTIN COM 539830109 1,555 79 5.35 757 32.63 0.0033
2022-11-01 2022-09-30 13F LOCKHEED MARTIN COM 539830109 1,476 12 0.82 570 -9.38 0.0027
2022-08-03 2022-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 1,464 -168 -10.29 629 -12.64 0.0028
2022-05-13 2022-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 1,632 -584 -26.35 720 -8.63 0.0030
2022-02-14 2021-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 2,216 253 12.89 788 16.40 0.0032
2021-11-12 2021-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 1,963 112 6.05 677 -3.29 0.0030
2021-08-16 2021-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 1,851 171 10.18 700 12.72 0.0032
2021-05-14 2021-03-31 13F LOCKHEED MARTIN COM 539830109 1,680 198 13.36 621 18.06 0.0032
2021-02-10 2020-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 1,482 268 22.08 526 13.12 0.0029
2020-11-13 2020-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 1,214 520 74.93 465 83.79 0.0030
2020-08-11 2020-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 694 28 4.20 253 11.95 0.0018
2020-05-12 2020-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 666 353 112.78 226 85.25 0.0019
2020-02-11 2019-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 313 -81 -20.56 122 -20.78 0.0009
2019-11-13 2019-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 394 -2,044 -83.84 154 -82.62 0.0013
2019-08-14 2019-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 2,438 31 1.29 886 22.71 0.0072
2019-05-14 2019-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 2,407 -7,107 -74.70 722 -71.02 0.0065
2019-02-13 2018-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 9,514 -10,194 -51.73 2,491 -63.46 0.0240
2018-11-13 2018-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 19,708 2,332 13.42 6,818 32.83 0.0620
2018-08-01 2018-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 17,376 2,164 14.23 5,133 -0.16 0.0504
2018-05-16 2018-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 15,212 14,994 6,877.98 5,141 7,244.29 0.0532
2018-02-13 2017-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 218 -40 -15.50 70 -12.50 0.0007
2017-11-08 2017-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 258 93 56.36 80 73.91 0.0009
2017-08-14 2017-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 165 -8 -4.62 46 0.00 0.0006
2017-09-15 2017-03-31 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 173 -3,155 -94.80 46 -94.47 0.0006
2017-05-08 2017-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 173 -3,155 46
2017-09-15 2016-12-31 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 3,328 3,043 1,067.72 832 1,123.53 0.0122
2017-02-14 2016-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 3,328 3,043 832
2017-09-14 2016-09-30 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 285 -4,049 -93.42 68 -93.68 0.0010
2016-11-04 2016-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 285 -4,049 68
2017-09-14 2016-06-30 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 4,334 -138 -3.09 1,076 8.58 0.0181
2016-08-08 2016-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 4,334 -138 1,076
2017-09-14 2016-03-31 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 4,472 172 4.00 991 6.10 0.0173
2016-05-13 2016-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 4,472 172 991
2017-09-14 2015-12-31 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 4,300 -164 -3.67 934 0.97 0.0173
2016-02-12 2015-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 4,300 -164 934
2016-01-05 2015-09-30 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 4,464 4,464 925 0.0193
2015-11-10 2015-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 4,464 925 0.0193
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.