Top 100 Department of the Interior Contractors, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CDM Constructors Inc. Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$175,284,992	2.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
2	Tepa EC, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$175,209,734	2.9%	Rank history: not on the FY2021 list, #3 in FY2022, not on the FY2023 list and #5 in FY2025; returned.
3	Jacobs Government Services Company 5 awardees, including Jacobs Project Management Co., Jacobs Engineering Group Inc. and Amentum Technology, Inc. Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction 541330 Engineering Services 541690 Other Scientific and Technical Consulting Services	$136,360,632	2.2%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
4	Oscar Renda Contracting Inc. Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$131,793,019	2.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
5	NW Construction, Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$101,597,818	1.7%	Rank history: not on the FY2021 list, #2 in FY2022, #9 in FY2023 and #1 in FY2025; up 4 since FY2023.
6	Hensel Phelps Construction Co 3 awardees, including Hensel Phelps Services LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$80,988,343	1.3%	Rank history: #21 in FY2021, #8 in FY2022, not on the FY2023 list and not on the FY2025 list; up 225 since FY2023.
7	Accenture Federal Services LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$62,449,313	1.0%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
8	Perimeter Solutions LP Top NAICS codes 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing	$59,504,972	1.0%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
9	KBR Wyle Services LLC 4 awardees Top NAICS codes 541513 Computer Facilities Management Services 811219 Other Electronic and Precision Equipment Repair and Maintenance 541330 Engineering Services	$52,722,216	0.9%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
10	Tutor Perini Corporation Top NAICS codes 236220 Commercial and Institutional Building Construction 238290 Other Building Equipment Contractors	$49,580,960	0.8%	Rank history: #58 in FY2021, #16 in FY2022, #11 in FY2023 and not on the FY2025 list; up 1 since FY2023.
11	Countertrade Products, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$43,887,322	0.7%	Rank history: #13 in FY2021, #11 in FY2022, #13 in FY2023 and #28 in FY2025; up 2 since FY2023.
12	Planet Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$38,585,797	0.6%	Rank history: #48 in FY2021, #17 in FY2022, #15 in FY2023 and #14 in FY2025; up 3 since FY2023.
13	Atherton Construction LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$37,313,758	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
14	NV5 Geospatial, Inc. Top NAICS codes 541360 Geophysical Surveying and Mapping Services 541370 Surveying and Mapping (except Geophysical) Services	$35,982,114	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
15	Woolpert, Inc. 2 awardees Top NAICS codes 541360 Geophysical Surveying and Mapping Services	$32,677,048	0.5%	Rank history: #53 in FY2021, #30 in FY2022, #79 in FY2023 and #31 in FY2025; up 64 since FY2023.
16	Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$31,640,464	0.5%	Rank history: not on the FY2021 list, #19 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
17	Bristow Group Inc. Through Bristow LLC Top NAICS codes 481211 Nonscheduled Chartered Passenger Air Transportation	$30,372,473	0.5%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
18	Lumen Technologies, Inc. 8 awardees, including Lumen Technologies Government Solutions, Inc. and Centurylink Communications, LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517111 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers	$29,518,956	0.5%	Rank history: #23 in FY2021, not on the FY2022 list, #52 in FY2023 and #12 in FY2025; up 34 since FY2023.
19	Tully Construction Co - Thalle Construction Co LLC Through Thalle Construction Co Inc. Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$28,710,676	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Olgoonik Oilfield Services LLC Top NAICS codes 213112 Support Activities for Oil and Gas Operations	$28,546,012	0.5%	Rank history: not on the FY2021 list, #64 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
21	Ldss, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$28,330,568	0.5%	Rank history: #25 in FY2021, #21 in FY2022, #21 in FY2023 and not on the FY2025 list; unchanged since FY2023.
22	Nuaxis LLC Top NAICS codes 541519 Other Computer Related Services	$28,030,768	0.5%	Rank history: #19 in FY2021, #31 in FY2022, #48 in FY2023 and #63 in FY2025; up 26 since FY2023.
23	Coastal Construction Group, LLC Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$27,948,000	0.5%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
24	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. and Aquilent, Inc. Top NAICS codes 541612 Human Resources Consulting Services 541330 Engineering Services 541519 Other Computer Related Services	$26,278,024	0.4%	Rank history: #50 in FY2021, not on the FY2022 list, #87 in FY2023 and not on the FY2025 list; up 63 since FY2023.
25	Paulsen Construction, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$23,986,230	0.4%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
26	Dewberry Engineers Inc. Top NAICS codes 541360 Geophysical Surveying and Mapping Services 541620 Environmental Consulting Services	$23,685,270	0.4%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; new.
27	Advanced American Construction, Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$23,325,534	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 460 since FY2023.
28	Fiber Business Solutions Group Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 237110 Water and Sewer Line and Related Structures Construction 562112 Hazardous Waste Collection	$23,114,860	0.4%	Rank history: #54 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 396 since FY2023.
29	Smartronix, LLC Top NAICS codes 541519 Other Computer Related Services	$22,073,707	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Dell Technologies Inc. 2 awardees, including Dell Marketing L.P. and Dell Federal Systems L.P Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing	$21,943,425	0.4%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
31	Interstate Rock Products, Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$21,618,099	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	Jrcruz Corp. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$21,500,000	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Hensel Phelps - Shimizu JV 2 awardees, including Hensel Phelps Construction Co Top NAICS codes 236220 Commercial and Institutional Building Construction	$21,320,162	0.4%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and not on the FY2025 list; down 9 since FY2023.
34	Alliance Steel Construction, Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$21,056,500	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	Hdr, Inc. 6 awardees, including HDR Engineering, Inc., HDR Schnabel Reclamation Joint Venture and HDR Environmental, Operations and Construction, Inc. Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$20,867,649	0.3%	Rank history: #43 in FY2021, #18 in FY2022, #30 in FY2023 and #74 in FY2025; down 5 since FY2023.
36	General Dynamics Corporation 3 awardees, including General Dynamics Mission Systems, Inc., General Dynamics Information Technology, Inc. and General Dynamics Ordnance and Tactical Systems - Simunition Operations, Inc. Top NAICS codes 541330 Engineering Services 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$20,726,258	0.3%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023 and #64 in FY2025; down 2 since FY2023.
37	Nationwide It Services Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$20,670,803	0.3%	Rank history: #73 in FY2021, #34 in FY2022, #46 in FY2023 and #57 in FY2025; up 9 since FY2023.
38	Verizon 4 awardees, including Cellco Partnership and Verizon Business Network Services LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 517110 Wired Telecommunications Carriers 517112 Wireless Telecommunications Carriers (except Satellite)	$20,401,236	0.3%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
39	Hartman-Walsh Corp Through Hartman-Walsh Painting Company Top NAICS codes 238320 Painting and Wall Covering Contractors 237110 Water and Sewer Line and Related Structures Construction 237990 Other Heavy and Civil Engineering Construction	$20,223,433	0.3%	Rank history: not on the FY2021 list, #89 in FY2022, #82 in FY2023 and #30 in FY2025; up 43 since FY2023.
40	Southern Contracting, LLC Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$19,914,264	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
41	CACI International Inc. 2 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top NAICS codes 541519 Other Computer Related Services	$19,736,020	0.3%	Rank history: #20 in FY2021, not on the FY2022 list, #28 in FY2023 and #37 in FY2025; down 13 since FY2023.
42	Pacific Gas and Electric Company Top NAICS codes 221122 Electric Power Distribution 531120 Lessors of Nonresidential Buildings (except Miniwarehouses)	$19,722,849	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
43	Teksynap Corporation Top NAICS codes 541512 Computer Systems Design Services	$19,535,116	0.3%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023 and #43 in FY2025; up 23 since FY2023.
44	Pipkin Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$19,316,501	0.3%	Rank history: #62 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
45	SNF Inc. Top NAICS codes 336992 Military Armored Vehicle, Tank, and Tank Component Manufacturing 336120 Heavy Duty Truck Manufacturing 336112 Light Truck and Utility Vehicle Manufacturing	$19,164,762	0.3%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
46	Weeminuche Construction Authority Through WCA Construction, LLC Top NAICS codes 237990 Other Heavy and Civil Engineering Construction 237110 Water and Sewer Line and Related Structures Construction 221310 Water Supply and Irrigation Systems	$18,778,774	0.3%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2025; new.
47	Goodfellow-Sun JV, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$18,138,239	0.3%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and not on the FY2025 list; up 12 since FY2023.
48	Sealaska Constructors LLC Top NAICS codes 236220 Commercial and Institutional Building Construction 238220 Plumbing, Heating, and Air-Conditioning Contractors 238160 Roofing Contractors	$17,221,954	0.3%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
49	Decisionpoint Corporation Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$17,132,225	0.3%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2025 list; up 27 since FY2023.
50	Garco Construction, Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$17,080,178	0.3%	Rank history: #27 in FY2021, #38 in FY2022, #42 in FY2023 and #32 in FY2025; down 8 since FY2023.
51	Nexgen Technologies Inc. Top NAICS codes 541511 Custom Computer Programming Services 541513 Computer Facilities Management Services	$16,884,709	0.3%	Rank history: #42 in FY2021, #40 in FY2022, #51 in FY2023 and #60 in FY2025; unchanged since FY2023.
52	Oshkosh Corporation Through Pierce Manufacturing Inc. Top NAICS codes 336120 Heavy Duty Truck Manufacturing	$15,413,644	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	DMS Contracting Inc Top NAICS codes 237310 Highway, Street, and Bridge Construction	$15,336,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	Regency Consulting Inc Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services 511210 Software Publishers	$15,150,519	0.2%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and not on the FY2025 list; up 13 since FY2023.
55	Otak, Inc. Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$15,018,444	0.2%	Rank history: #67 in FY2021, not on the FY2022 list, #71 in FY2023 and not on the FY2025 list; up 16 since FY2023.
56	Global Engineering Services Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 237990 Other Heavy and Civil Engineering Construction 238990 All Other Specialty Trade Contractors	$14,745,917	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 177 since FY2023.
57	CGI Federal Inc. Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$14,658,796	0.2%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
58	General Electric Company 4 awardees, including GE Renewables US LLC, GE Vernova Electrification Software, LLC and GE Vernova International LLC Top NAICS codes 237990 Other Heavy and Civil Engineering Construction 333611 Turbine and Turbine Generator Set Units Manufacturing 541519 Other Computer Related Services	$14,618,929	0.2%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and not on the FY2025 list; up 10 since FY2023.
59	Environmental Systems Research Institute, Inc. Top NAICS codes 511210 Software Publishers 611420 Computer Training	$14,501,684	0.2%	Rank history: #65 in FY2021, #74 in FY2022, not on the FY2023 list and #82 in FY2025; up 45 since FY2023.
60	Peraton Inc. 2 awardees, including Peraton Enterprise Solutions LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services 541330 Engineering Services	$14,456,333	0.2%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
61	Promethean Operating I LLC Top NAICS codes 213112 Support Activities for Oil and Gas Operations	$14,436,658	0.2%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
62	Terra Site Constructors LLC Top NAICS codes 236115 New Single-Family Housing Construction (except For-Sale Builders) 237310 Highway, Street, and Bridge Construction 236220 Commercial and Institutional Building Construction	$14,369,365	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	KWR Construction Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$14,360,263	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Stantec Inc. 3 awardees, including Stantec Consulting Services Inc. Top NAICS codes 541330 Engineering Services 541310 Architectural Services	$13,876,671	0.2%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #68 in FY2025; up 32 since FY2023.
65	Global Solutions Group Inc. Top NAICS codes 541511 Custom Computer Programming Services	$13,616,889	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 303 since FY2023.
66	Lacy Mechanical Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 238160 Roofing Contractors 238310 Drywall and Insulation Contractors	$13,466,508	0.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; up 95 since FY2023.
67	Nomlaki Technologies, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$13,254,400	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 140 since FY2023.
68	Arctic Slope Regional Corporation 5 awardees, including Vistronix, LLC, Broadleaf, Inc. and Asrc Federal Data Solutions, LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$13,032,177	0.2%	Rank history: #5 in FY2021, #33 in FY2022, #40 in FY2023 and #18 in FY2025; down 28 since FY2023.
69	Software Information Resource Corp Top NAICS codes 513210 Software Publishers 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$12,821,915	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #80 in FY2025; up 14 since FY2023.
70	Caci Technologies LLC 2 awardees, including Caci, Inc. - Federal Top NAICS codes 541519 Other Computer Related Services	$12,787,657	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Sterling Computers Corporation Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$12,634,316	0.2%	Rank history: not on the FY2021 list, #65 in FY2022, not on the FY2023 list and not on the FY2025 list; up 51 since FY2023.
72	Western Pilot Service Inc. Top NAICS codes 115310 Support Activities for Forestry	$12,548,125	0.2%	Rank history: #70 in FY2021, not on the FY2022–FY2023 lists and #47 in FY2025; up 100 since FY2023.
73	Ironwood Commercial Builders Inc Top NAICS codes 236220 Commercial and Institutional Building Construction 238990 All Other Specialty Trade Contractors	$12,518,558	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 293 since FY2023.
74	Hbhansen Construction Inc Through HB Hansen Construction, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 237110 Water and Sewer Line and Related Structures Construction	$12,035,589	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and not on the FY2025 list; up 18 since FY2023.
75	AECOM Technical Services, Inc. Top NAICS codes 541330 Engineering Services 541310 Architectural Services	$12,000,020	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Science Applications International Corporation 2 awardees Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$11,904,030	0.2%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; up 76 since FY2023.
77	Aero Spray Inc. Top NAICS codes 115310 Support Activities for Forestry	$11,798,726	0.2%	Rank history: #29 in FY2021, not on the FY2022–FY2023 lists and #87 in FY2025; returned.
78	Merrick-Surdex Joint Venture LLP Top NAICS codes 541360 Geophysical Surveying and Mapping Services	$11,778,654	0.2%	Rank history: not on the FY2021 list, #60 in FY2022, #62 in FY2023 and #44 in FY2025; down 16 since FY2023.
79	Kearns & West Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541611 Administrative Management and General Management Consulting Services	$11,723,512	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, not on the FY2023 list and not on the FY2025 list; up 70 since FY2023.
80	Ritz Construction Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 238210 Electrical Contractors and Other Wiring Installation Contractors 238160 Roofing Contractors	$11,691,671	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; up 180 since FY2023.
81	Orcom a Division of Ortega Companies Inc Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction 236220 Commercial and Institutional Building Construction	$11,617,159	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Ajce Corporation Top NAICS codes 237990 Other Heavy and Civil Engineering Construction 236220 Commercial and Institutional Building Construction 237110 Water and Sewer Line and Related Structures Construction	$11,569,346	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 231 since FY2023.
83	Fugro USA Land, Inc. Top NAICS codes 541360 Geophysical Surveying and Mapping Services	$11,545,862	0.2%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2025; new.
84	Sysco Corp 4 awardees, including Sysco Montana, Inc., Sysco USA I Inc. and Sysco Seattle, Inc. Top NAICS codes 311999 All Other Miscellaneous Food Manufacturing 311991 Perishable Prepared Food Manufacturing 722310 Food Service Contractors	$11,519,418	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 84 since FY2023.
85	Chenega Professional & Technical Services LLC Top NAICS codes 541511 Custom Computer Programming Services	$11,498,943	0.2%	Rank history: not on the FY2021 list, #96 in FY2022, not on the FY2023 list and not on the FY2025 list; up 23 since FY2023.
86	Broken Arrow Horse & Cattle Company LLC Top NAICS codes 115210 Support Activities for Animal Production	$11,299,116	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 61 since FY2023.
87	Federal Contracts LLC Top NAICS codes 336112 Light Truck and Utility Vehicle Manufacturing 333120 Construction Machinery Manufacturing 333924 Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing	$11,200,381	0.2%	Rank history: not on the FY2021 list, #77 in FY2022, #77 in FY2023 and not on the FY2025 list; down 10 since FY2023.
88	Bairco Construction Inc. Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction 236220 Commercial and Institutional Building Construction 221310 Water Supply and Irrigation Systems	$10,852,650	0.2%	Rank history: #45 in FY2021, not on the FY2022–FY2023 lists and #55 in FY2025; up 122 since FY2023.
89	AECOM 4 awardees, including Environmental Management & Planning Solutions LLC, AECOM Services, LLC and Shimmick Construction Company, Inc. Top NAICS codes 541620 Environmental Consulting Services 541310 Architectural Services 236220 Commercial and Institutional Building Construction	$10,838,784	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #76 in FY2025; down 19 since FY2023.
90	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$10,816,957	0.2%	Rank history: #66 in FY2021, #88 in FY2022, #75 in FY2023 and not on the FY2025 list; down 15 since FY2023.
91	Okie LLC Top NAICS codes 236220 Commercial and Institutional Building Construction 237110 Water and Sewer Line and Related Structures Construction 238990 All Other Specialty Trade Contractors	$10,715,169	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 159 since FY2023.
92	Makpar-Nuaxis JV LLC Top NAICS codes 541519 Other Computer Related Services	$10,652,954	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 250 since FY2023.
93	A & J'S Construction, L.l.c Top NAICS codes 236220 Commercial and Institutional Building Construction	$10,629,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
94	Cook Inlet Region Inc. 3 awardees, including North Wind Construction Services, LLC and North Wind Site Services, LLC Top NAICS codes 562910 Remediation Services 238990 All Other Specialty Trade Contractors 541380 Testing Laboratories and Services	$10,616,429	0.2%	Rank history: #79 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
95	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services 517111 Wired Telecommunications Carriers	$10,604,355	0.2%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and #79 in FY2025; down 17 since FY2023.
96	Nana Regional Corporation Inc. 2 awardees, including Affigent, LLC and Akima Data Management LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 513210 Software Publishers	$10,467,192	0.2%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
97	Gardner Zemke Company Top NAICS codes 237130 Power and Communication Line and Related Structures Construction 238990 All Other Specialty Trade Contractors 333613 Mechanical Power Transmission Equipment Manufacturing	$10,461,217	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Classic Site Solutions Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 238910 Site Preparation Contractors 237990 Other Heavy and Civil Engineering Construction	$10,428,559	0.2%	Rank history: #92 in FY2021, #50 in FY2022, #43 in FY2023 and not on the FY2025 list; down 55 since FY2023.
99	GAP Rock Engineering LLC Through Rock Gap Engineering LLC Top NAICS codes 236220 Commercial and Institutional Building Construction 238160 Roofing Contractors 238990 All Other Specialty Trade Contractors	$10,383,312	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 3 since FY2023.
100	Managed Business Solutions LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541519 Other Computer Related Services 561110 Office Administrative Services	$10,376,100	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $6.06 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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