Lockheed Martin Corporation
MX ˙ BMV ˙ US5398301094
SecurityMX:LMT / Lockheed Martin Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership342,910 shares
Latest Disclosed Value $ 207,251,363
Rhumbline Advisers reports 5.69% decrease in ownership of LMT / Lockheed Martin Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 342,910 shares of Lockheed Martin Corporation (MX:LMT) valued at $207,251,363 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 363,583 shares of Lockheed Martin Corporation. This represents a change in shares of -5.69% 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.

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)
2026-05-12 2026-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 342,910 -20,673 -5.69 207,251 17.85 0.1773
2026-02-13 2025-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 363,583 -9,729 -2.61 175,854 -5.64 0.1422
2025-11-06 2025-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 373,312 8,914 2.45 186,361 10.43 0.1497
2025-08-12 2025-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 364,398 -2,738 -0.75 168,767 2.90 0.1445
2025-05-29 2025-03-31 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 367,136 -20,507 -5.29 164,003 -12.94 0.1534
2025-04-08 2025-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 367,136 -20,507 164,003 0.1534
2025-05-29 2024-12-31 13F/A-1 LOCKHEED MARTIN CORP COM COM 539830109 387,643 -320 -0.08 188,371 -16.94 0.1685
2025-01-30 2024-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 387,643 -320 188,371 0.1685
2024-11-12 2024-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 387,963 -14,020 -3.49 226,788 20.78 0.2046
2024-08-01 2024-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 401,983 -16,438 -3.93 187,766 -1.35 0.1765
2024-05-09 2024-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 418,421 8,894 2.17 190,327 2.54 0.1828
2024-02-08 2023-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 409,527 -12,238 -2.90 185,614 7.61 0.1945
2023-11-09 2023-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 421,765 9,553 2.32 172,485 -9.11 0.2002
2023-08-08 2023-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 412,212 -4,399 -1.06 189,774 96,723.47 0.2126
2023-05-11 2023-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 416,611 12,124 3.00 197 -99.90 0.2430
2023-02-14 2022-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 404,487 9,151 2.31 196,779 28.85 0.2645
2022-11-10 2022-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 395,336 11,398 2.97 152,714 -7.49 0.2275
2022-08-11 2022-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 383,938 2,551 0.67 165,078 -1.94 0.2409
2022-05-12 2022-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 381,387 -6,616 -1.71 168,344 22.08 0.2167
2022-02-10 2021-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 388,003 6,252 1.64 137,900 4.67 0.1690
2021-11-12 2021-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 381,751 -4,755 -1.23 131,742 -9.91 0.1783
2021-08-05 2021-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 386,506 -22,034 -5.39 146,235 -3.13 0.1919
2021-05-06 2021-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 408,540 -28,423 -6.50 150,956 -2.68 0.2051
2021-02-10 2020-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 436,963 -6,904 -1.56 155,113 -8.82 0.2141
2020-11-12 2020-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 443,867 16,550 3.87 170,125 9.10 0.2666
2020-08-13 2020-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 427,317 32,409 8.21 155,937 16.50 0.2604
2020-05-06 2020-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 394,908 -15,131 -3.69 133,854 -16.16 0.2805
2020-02-05 2019-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 410,039 -5,544 -1.33 159,661 -1.51 0.2670
2019-10-23 2019-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 415,583 24,721 6.32 162,102 14.08 0.2962
2019-08-14 2019-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 390,862 -12,701 -3.15 142,094 17.30 0.2667
2019-05-01 2019-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 403,563 10,943 2.79 121,133 17.83 0.2346
2019-01-31 2018-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 392,620 2,615 0.67 102,804 -23.81 0.2237
2018-11-07 2018-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 390,005 -23,260 -5.63 134,926 10.51 0.2606
2018-08-06 2018-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 413,265 555 0.13 122,091 -12.46 0.2462
2018-05-02 2018-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 412,710 -7,400 -1.76 139,467 3.40 0.2913
2018-02-09 2017-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 420,110 8,580 2.08 134,876 5.62 0.2739
2017-11-06 2017-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 411,530 3,432 0.84 127,694 12.71 0.2776
2017-08-02 2017-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 408,098 -816 -0.20 113,292 3.53 0.2586
2017-05-02 2017-03-31 13F LOCKHEED MARTIN CORP COM COM 539830109 408,914 7,124 1.77 109,425 8.96 0.2556
2017-01-27 2016-12-31 13F LOCKHEED MARTIN CORP COM COM 539830109 401,790 8,790 2.24 100,423 6.59 0.2545
2016-11-08 2016-09-30 13F LOCKHEED MARTIN CORP COM COM 539830109 393,000 10,281 2.69 94,210 -0.81 0.2596
2016-08-11 2016-06-30 13F LOCKHEED MARTIN CORP COM COM 539830109 382,719 10,594 2.85 94,979 15.23 0.2814
2016-05-02 2016-03-31 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 372,125 8,158 2.24 82,426 4.29 0.2558
2016-02-03 2015-12-31 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 363,967 1,110 0.31 79,035 5.07 0.2543
2015-11-04 2015-09-30 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 362,857 451 0.12 75,224 11.66 0.2559
2015-08-04 2015-06-30 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 362,406 -71,830 -16.54 67,371 -23.56 0.2147
2015-05-12 2015-03-31 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 434,236 -2,629 -0.60 88,133 4.76 0.2542
2015-02-06 2014-12-31 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 436,865 -12,843 -2.86 84,127 2.35 0.2444
2014-11-12 2014-09-30 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 449,708 -32,642 -6.77 82,198 6.02 0.2469
2014-08-06 2014-06-30 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 482,350 7,250 1.53 77,528 -0.03 0.2275
2014-05-06 2014-03-31 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 475,100 -14,034 -2.87 77,555 6.66 0.2300
2014-02-03 2013-12-31 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 489,134 -17,860 -3.52 72,715 12.45 0.2145
2013-11-05 2013-09-30 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 506,994 -17,899 -3.41 64,667 13.59 0.2004
2013-08-07 2013-06-30 13F LOCKHEED MARTIN CORP COMMON ST COM 539830109 524,893 524,893 56,930 0.1829
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.