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MARTIN MARIETTA MATERIALS INC (MLM) Subsidiaries

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MARTIN MARIETTA MATERIALS INC Subsidiaries

Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (18 lists). Names and jurisdictions are as filed.

  • 2026-02-19: Subsidiary Percent.
  • 2026-02-19: Subsidiary 1560947 B.C. LTD., a British Columbia, Canada corporation; Jurisdiction 100%1.
  • 2026-02-19: Subsidiary 2M Lands, LLC, a North Carolina limited liability company; Jurisdiction 100%2.
  • 2026-02-19: Subsidiary Alamo Gulf Coast Railroad Company, a Texas corporation; Jurisdiction 99.5%3.
Annual report filedSubsidiaryJurisdiction
2026-02-19Percent
2026-02-191560947 B.C. LTD., a British Columbia, Canada corporation100%1
2026-02-192M Lands, LLC, a North Carolina limited liability company100%2
2026-02-19Alamo Gulf Coast Railroad Company, a Texas corporation99.5%3
2026-02-19Alamo North Texas Railroad Company, a Texas corporation99.5%4
2026-02-19Albert Frei & Sons, Inc., a Colorado corporation100%5
2026-02-19American Aggregates Corporation, a North Carolina corporation
2026-02-19American Materials Technologies, LLC, a Tennessee limited liability company100%6
2026-02-19American Stone Company, a North Carolina corporation50%7
2026-02-19AR & MJ Frei Limited Partnership, a Colorado limited liability partnership100%8
2026-02-19Bahama Aggregates Company, LLC, a Delaware limited liability company
2026-02-19Bahama Cement Company, a Liberian nonresident domestic corporation100%9
2026-02-19Bahama Rock Limited, a Bahamas corporation
2026-02-19Bluegrass – Blue Mount, LLC, a North Carolina limited liability company100%10
2026-02-19Bluegrass Materials Company, LLC, a North Carolina limited liability company100%11
2026-02-19Bluegrass-St. Marys, LLC, a North Carolina limited liability company100%12
2026-02-19Brookhollow Corporation, a Delaware corporation100%13
2026-02-19Campbell’s C-Ment Contracting, Inc., a Colorado corporation100%14
2026-02-19Carolina Quarries, Inc., a Delaware corporation100%15
2026-02-19CIG MC LLC, a Colorado limited liability company
2026-02-19Creole Corporation, a Delaware corporation100%16
2026-02-19FRI Ready Mix of Tennessee, LLC, a Florida limited liability company100%17
2026-02-19Front Range Aggregates LLC, a Delaware limited liability company
2026-02-19Granite Canyon Quarry, a Wyoming joint venture100%18
2026-02-19Harding Street Corporation, a North Carolina corporation
2026-02-19HSMM LLC, a North Carolina limited liability company
2026-02-19Kent Sand & Gravel Company, LLC, a North Carolina limited liability company100%19
2026-02-19Mardell Trucking Company, Inc., a North Carolina corporation100%20
2026-02-19Marlin Acquisition Company 2, Inc., a Delaware corporation
2026-02-19Martin Marietta ALTN Aggregates, Inc., a Tennessee corporation100%21
2026-02-19Martin Marietta ALTN Holdings, Inc., a Delaware corporation100%22
2026-02-19Martin Marietta Arizona, LLC, a North Carolina limited liability company100%23
2026-02-19Martin Marietta Bluegrass, LLC, a North Carolina limited liability company
2026-02-19Martin Marietta California A&P, LLC, a North Carolina limited liability company100%24
2026-02-19Martin Marietta California Ready-Mix, LLC, a Delaware limited liability company100%25
2026-02-19Martin Marietta Exchange Entity, LLC, a North Carolina limited liability company
2026-02-19Martin Marietta Fleet Management LLC, a North Carolina limited liability company100%26
2026-02-19Martin Marietta Funding LLC, a Delaware limited liability company
2026-02-19Martin Marietta Inc., a North Carolina corporation
2026-02-19Martin Marietta Kansas City, LLC, a Delaware limited liability company100%27
2026-02-19Martin Marietta Magnesia Specialties, LLC, a Delaware limited liability company
2026-02-19Martin Marietta Marine Finance, LLC, a California limited liability company100%28
2026-02-19Martin Marietta Marine Operations, LLC, a California limited liability company100%29
2026-02-19Martin Marietta Materials Canada Limited, a Nova Scotia, Canada corporation
2026-02-19Martin Marietta Materials of Missouri, Inc., a North Carolina corporation
2026-02-19Martin Marietta Materials Real Estate Investments, Inc., a North Carolina corporation
2026-02-19Martin Marietta Materials Southwest, LLC, a Delaware limited liability company
2026-02-19Martin Marietta Materials West Division, LLC, a North Carolina limited liability company
2026-02-19Martin Marietta Northern California Aggregates, LLC, a Delaware limited liability company100%30
2026-02-19Martin Marietta North Texas Cement, LLC, a Delaware limited liability company
2026-02-19Martin Marietta Pacific District Cement LLC, a Delaware limited liability company100%31
2026-02-19Martin Marietta San Diego Aggregates LLC, a California limited liability company100%32
2026-02-19Martin Marietta Southern California Aggregates, LLC, a Delaware limited liability company100%33
2026-02-19Martin Marietta South Texas Cement, LLC, a Delaware limited liability company
2026-02-19Martin Marietta Texas Ready-Mix, LLC, a Texas limited liability company100%34
2026-02-19Martin Marietta Southeast AGG Operations, LLC, a Delaware limited liability company100%35
2026-02-19Martin Marietta Southeast Aggregates, Inc., a Delaware corporation
2026-02-19Martin Marietta Southwest Ready-Mix, Inc., a Delaware corporation
2026-02-19Martin Marietta Stockton, LLC, a Delaware limited liability company100%36
2026-02-19Martin Marietta Transportation and Distribution, LLC, a North Carolina limited liability company
2026-02-19Material Producers, Inc., an Oklahoma corporation100%37
2026-02-19Maryland Materials, Inc., a North Carolina corporation100%38
2026-02-19Meridian Aggregates Company, a Limited Partnership, a North Carolina limited partnership100%39
2026-02-19Meridian Aggregates Company Northwest, LLC, a North Carolina limited liability company
2026-02-19Meridian Aggregates Investments, LLC, a North Carolina limited liability company100%40
2026-02-19Meridian Granite Company, a North Carolina corporation100%41
2026-02-19Mid-State Construction & Materials, Inc., an Arkansas corporation
2026-02-19Mission Valley Rock Co., LLC, a California limited liability company100%42
2026-02-19MMM Mexico I, LLC, a North Carolina limited liability company100%43
2026-02-19MMM Mexico, LLC, a North Carolina limited liability company100%44
2026-02-19MMMW AGG, LLC, a North Carolina limited liability company100%45
2026-02-19MMMW CMT, LLC, a North Carolina limited liability company100%46
2026-02-19MTD Pipeline LLC, a Delaware limited liability company50%47
2026-02-19Mystic Valley LLC, a Colorado limited liability company100%48
2026-02-19Northeast Land and Material Company, Inc., a North Carolina corporation100%49
2026-02-19Palmetto Sand Company Inc., a South Carolina corporation100%50
2026-02-19Panadero Midco, LLC, a North Carolina limited liability company100%51
2026-02-19PCAz Leasing, LLC, an Arizona limited liability company100%52
2026-02-19Petrillo Brothers, Inc., a North Carolina corporation100%53
2026-02-19Piedras y Arenas Baja, S. de R.L. de C.V., a Mexico limited liability company100%54
2026-02-19Powderly Transportation, Inc., a North Carolina corporation100%55
2026-02-19Premier Magnesia, LLC, a Delaware limited liability company
2026-02-19R&S Sand & Gravel, LLC, a North Carolina limited liability company100%56
2026-02-19Riverside Cement Company, a California general partnership100%57
2026-02-19Rock & Rail LLC, a Colorado limited liability company
2026-02-19Rocky Mountain Materials and Asphalt, Inc., a Colorado corporation
2026-02-19Rocky Mountain Premix, Inc., a Colorado corporation
2026-02-19Rocky Mountain Ready Mix Concrete, Inc., a Colorado corporation100%58
2026-02-19Royal Gorge Express, LLC, a Colorado Limited Liability Company50%59
2026-02-19St. Marys Sand Company, LLC, a North Carolina limited liability company100%60
2026-02-19Suburban Acquisition Company, a Colorado corporation
2026-02-19Theodore Holding, LLC, a Delaware limited liability company60.7%61
2026-02-19Tiller Corporation, a North Carolina corporation
2026-02-19TXI Aviation, Inc. dba TXI Retail, a Texas corporation100%62
2026-02-19TXI California, LLC, a Delaware limited liability company100%63
2026-02-19TXI Riverside, LLC, a Delaware limited liability company100%64
2026-02-19Valley Stone LLC, a Virginia limited liability company50%65

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