Top 100 DOD Washington Headquarters Service Contractors, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	National Security Technology Accelerator Inc.	$369,743,296	23.6%	Rank history: #1 in FY2021, #1 in FY2023, #2 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$328,073,634	20.9%	Rank history: #2 in FY2021, #2 in FY2023, #1 in FY2024 and #3 in FY2025; unchanged since FY2021.
3	Lockheed Martin Corporation 3 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing 541330 Engineering Services	$93,289,473	5.9%	Rank history: #10 in FY2021, #29 in FY2023, #27 in FY2024 and #23 in FY2025; up 7 since FY2021.
4	Palantir Technologies Inc. Through Palantir USG Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$47,022,634	3.0%	Rank history: not on the FY2021 list, not on the FY2023 list, #15 in FY2024 and #55 in FY2025; new.
5	Analytic Services Inc. 2 awardees, including Advanced Technology International	$43,489,331	2.8%	Rank history: #3 in FY2021, #20 in FY2023, not on the FY2024 list and #84 in FY2025; down 2 since FY2021.
6	Servicesource Inc. Top NAICS codes 561210 Facilities Support Services	$33,400,136	2.1%	Rank history: #4 in FY2021, #12 in FY2023, #8 in FY2024 and #10 in FY2025; down 2 since FY2021.
7	Didlake Inc. Top NAICS codes 561720 Janitorial Services	$22,244,072	1.4%	Rank history: #19 in FY2021, not on the FY2023 list, #36 in FY2024 and #32 in FY2025; up 12 since FY2021.
8	Johnson Controls Security Solutions LLC 4 awardees, including Johnson Controls Building Automation Systems, LLC, Johnson Controls Fire Protection LP and Johnson Controls, Inc. Top NAICS codes 541512 Computer Systems Design Services 238220 Plumbing, Heating, and Air-Conditioning Contractors 334290 Other Communications Equipment Manufacturing	$22,082,524	1.4%	Rank history: #18 in FY2021 and not on the FY2023–FY2025 lists; up 10 since FY2021.
9	Northrop Grumman Corporation 5 awardees, including Northrop Grumman Systems Corporation and ATK Launch Systems LLC Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541330 Engineering Services 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing	$20,931,480	1.3%	Rank history: not on the FY2021 list, #7 in FY2023, #6 in FY2024 and #5 in FY2025; up 316 since FY2021.
10	Chimes District of Columbia Inc. Top NAICS codes 561720 Janitorial Services	$17,897,704	1.1%	Rank history: #21 in FY2021, not on the FY2023 list, #55 in FY2024 and not on the FY2025 list; up 11 since FY2021.
11	Qualx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$17,210,337	1.1%	Rank history: #25 in FY2021, #14 in FY2023, #28 in FY2024 and #11 in FY2025; up 14 since FY2021.
12	Radiance Technologies Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$16,842,766	1.1%	Rank history: #20 in FY2021 and not on the FY2023–FY2025 lists; up 8 since FY2021.
13	Nakupuna Solutions, LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 561210 Facilities Support Services	$15,758,848	1.0%	Rank history: #16 in FY2021, #37 in FY2023, #78 in FY2024 and not on the FY2025 list; up 3 since FY2021.
14	RTX Corporation 6 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Rockwell Collins, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services 611430 Professional and Management Development Training	$15,571,312	1.0%	Rank history: #12 in FY2021, #21 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
15	Maximus Inc. Through Maximus Federal Technology Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$13,836,536	0.9%	Rank history: not on the FY2021 list, #4 in FY2023 and not on the FY2024–FY2025 lists; up 203 since FY2021.
16	The Boeing Company Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$13,804,921	0.9%	Rank history: #9 in FY2021, not on the FY2023 list, #93 in FY2024 and not on the FY2025 list; down 7 since FY2021.
17	Honeywell International Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$13,276,436	0.8%	Rank history: #57 in FY2021, #5 in FY2023, #5 in FY2024 and #52 in FY2025; up 40 since FY2021.
18	Riverside Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$13,154,853	0.8%	Rank history: #37 in FY2021, #33 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2021.
19	SNA International LLC Top NAICS codes 621511 Medical Laboratories	$12,903,968	0.8%	Rank history: #17 in FY2021, #23 in FY2023, not on the FY2024 list and #20 in FY2025; down 2 since FY2021.
20	TM3 Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$12,795,013	0.8%	Rank history: #31 in FY2021 and not on the FY2023–FY2025 lists; up 11 since FY2021.
21	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$12,311,570	0.8%	Rank history: #24 in FY2021, #6 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
22	Chesapeake Technology International, Corp. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$12,123,981	0.8%	Rank history: #43 in FY2021 and not on the FY2023–FY2025 lists; up 21 since FY2021.
23	Kunj Construction Corporation Top NAICS codes 236220 Commercial and Institutional Building Construction	$11,484,248	0.7%	Rank history: not on the FY2021 list, #71 in FY2023 and not on the FY2024–FY2025 lists; new.
24	Alaska Native Government Services LLC Through Copper River Technologies, LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541330 Engineering Services 561320 Temporary Help Services	$11,039,022	0.7%	Rank history: #33 in FY2021, #15 in FY2023, #40 in FY2024 and #61 in FY2025; up 9 since FY2021.
25	Concurrent Technologies Corp Top NAICS codes 541330 Engineering Services	$11,020,237	0.7%	Rank history: not on the FY2021 list, #17 in FY2023, #29 in FY2024 and #28 in FY2025; new.
26	Bering Straits Native Corporation 2 awardees, including Stampede Ventures, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 237310 Highway, Street, and Bridge Construction	$10,991,683	0.7%	Rank history: #13 in FY2021, not on the FY2023–FY2024 lists and #35 in FY2025; down 13 since FY2021.
27	Guidehouse Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$10,138,554	0.6%	Rank history: #32 in FY2021, #51 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2021.
28	Markon LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$9,177,047	0.6%	Rank history: #22 in FY2021, #27 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
29	Hdr, Inc. Through HDR Architecture, Inc. Top NAICS codes 541330 Engineering Services	$9,080,224	0.6%	Rank history: #49 in FY2021, #34 in FY2023, #69 in FY2024 and #57 in FY2025; up 20 since FY2021.
30	Qcm, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$8,963,519	0.6%	Rank history: #26 in FY2021, #31 in FY2023, #22 in FY2024 and #43 in FY2025; down 4 since FY2021.
31	The CNA Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$8,705,153	0.6%	Rank history: #29 in FY2021, #22 in FY2023, #38 in FY2024 and #37 in FY2025; down 2 since FY2021.
32	Signature Renovations LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$7,548,551	0.5%	Rank history: not on the FY2021 list, #11 in FY2023, #48 in FY2024 and #9 in FY2025; new.
33	Planned Systems International Inc. 2 awardees, including Pro-Sphere Tek, Inc. Top NAICS codes 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$7,103,464	0.5%	Rank history: not on the FY2021 list, #49 in FY2023 and not on the FY2024–FY2025 lists; up 126 since FY2021.
34	Quicklogic Corp	$6,871,721	0.4%	Rank history: not on the FY2021 list, #19 in FY2023, #70 in FY2024 and #45 in FY2025; new.
35	Anduril Industries Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$6,638,686	0.4%	Rank history: not on the FY2021 list, #8 in FY2023, #20 in FY2024 and not on the FY2025 list; new.
36	R & R Janitorial, Painting & Building Services Inc. Top NAICS codes 561720 Janitorial Services	$6,535,099	0.4%	Rank history: #46 in FY2021, #55 in FY2023, #81 in FY2024 and #75 in FY2025; up 10 since FY2021.
37	Procurement & Acquisition Center of Excellence, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 611430 Professional and Management Development Training	$6,306,332	0.4%	Rank history: #59 in FY2021, #36 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2021.
38	Applied Environmental, Inc. Top NAICS codes 541620 Environmental Consulting Services	$6,281,952	0.4%	Rank history: #41 in FY2021 and not on the FY2023–FY2025 lists; up 3 since FY2021.
39	Chinook Systems Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$6,244,907	0.4%	Rank history: #35 in FY2021 and not on the FY2023–FY2025 lists; down 4 since FY2021.
40	Jasint Consulting and Technologies, LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541612 Human Resources Consulting Services	$6,232,630	0.4%	Rank history: #39 in FY2021, #46 in FY2023, not on the FY2024 list and #68 in FY2025; down 1 since FY2021.
41	HSU Development, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$6,095,786	0.4%	Rank history: not on the FY2021 list, #32 in FY2023, #19 in FY2024 and not on the FY2025 list; up 61 since FY2021.
42	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,700,000	0.4%	Rank history: not on the FY2021 list, #25 in FY2023 and not on the FY2024–FY2025 lists; new.
43	M.c. Dean, Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance 238210 Electrical Contractors and Other Wiring Installation Contractors 561210 Facilities Support Services	$5,597,191	0.4%	Rank history: #8 in FY2021, #61 in FY2023, #46 in FY2024 and #47 in FY2025; down 35 since FY2021.
44	Chameleon Consulting Group, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$5,555,556	0.4%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #15 in FY2025; new.
45	CACI International Inc. 3 awardees, including LGS Innovations LLC, Caci, Inc. - Federal and Caci Technologies, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611420 Computer Training	$5,492,499	0.4%	Rank history: not on the FY2021 list, #56 in FY2023 and not on the FY2024–FY2025 lists; up 101 since FY2021.
46	Sinew Management Group LLC Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$5,035,716	0.3%	Rank history: #72 in FY2021 and not on the FY2023–FY2025 lists; up 26 since FY2021.
47	Koniag, Inc. 3 awardees, including Eagle Harbor Solutions LLC and Kadiak LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$5,033,724	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
48	Magellan Health, Inc. Through Magellan Federal, Inc. Top NAICS codes 624190 Other Individual and Family Services	$4,727,741	0.3%	Rank history: not on the FY2021 list, #90 in FY2023 and not on the FY2024–FY2025 lists; up 149 since FY2021.
49	Kenney Business Solutions Inc. Top NAICS codes 561410 Document Preparation Services	$4,682,115	0.3%	Rank history: #76 in FY2021 and not on the FY2023–FY2025 lists; up 27 since FY2021.
50	Human Capital Resources and Concepts, Inc. Top NAICS codes 541612 Human Resources Consulting Services	$4,578,885	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
51	Kpmg L.L.P. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,498,085	0.3%	Rank history: #61 in FY2021, #70 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2021.
52	Jensen Hughes, Inc. Top NAICS codes 541330 Engineering Services	$4,117,698	0.3%	Rank history: #55 in FY2021, #54 in FY2023, #80 in FY2024 and #72 in FY2025; up 3 since FY2021.
53	Sabel Systems Technology Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$4,097,128	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 111 since FY2021.
54	The Bridge Group LLC Top NAICS codes 561920 Convention and Trade Show Organizers 541611 Administrative Management and General Management Consulting Services	$4,068,304	0.3%	Rank history: not on the FY2021 list, #76 in FY2023 and not on the FY2024–FY2025 lists; new.
55	Eccalon, LLC Top NAICS codes 334290 Other Communications Equipment Manufacturing	$3,911,864	0.2%	Rank history: not on the FY2021 list, #65 in FY2023 and not on the FY2024–FY2025 lists; new.
56	Avaya Federal Solutions Inc. Top NAICS codes 541513 Computer Facilities Management Services	$3,865,435	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
57	Galapagos Federal Systems LLC Top NAICS codes 541512 Computer Systems Design Services	$3,809,658	0.2%	Rank history: #47 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
58	Innovasystems International LLC Top NAICS codes 541330 Engineering Services	$3,469,561	0.2%	Rank history: #36 in FY2021, #28 in FY2023, #16 in FY2024 and #71 in FY2025; down 22 since FY2021.
59	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,456,188	0.2%	Rank history: not on the FY2021 list, #87 in FY2023 and not on the FY2024–FY2025 lists; up 261 since FY2021.
60	The Donohoe Companies. Inc. Through AAA Complete Building Services Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$3,324,904	0.2%	Rank history: not on the FY2021 list, #63 in FY2023 and not on the FY2024–FY2025 lists; new.
61	Ati-Endyna JV, LLC Top NAICS codes 541620 Environmental Consulting Services	$3,246,650	0.2%	Rank history: #62 in FY2021, #69 in FY2023, #87 in FY2024 and not on the FY2025 list; up 1 since FY2021.
62	Prime Response, Inc. Top NAICS codes 561210 Facilities Support Services	$3,049,094	0.2%	Rank history: #51 in FY2021, #75 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2021.
63	Black River Systems Company, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,744,107	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 201 since FY2021.
64	Andworx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,722,987	0.2%	Rank history: not on the FY2021 list, #62 in FY2023, #85 in FY2024 and #86 in FY2025; new.
65	Caci, Inc. - Federal Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,500,000	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
66	Phase LLC Top NAICS codes 541519 Other Computer Related Services	$2,420,955	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 87 since FY2021.
67	Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$2,264,462	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 290 since FY2021.
68	TD Snow Removal Corporation Top NAICS codes 488490 Other Support Activities for Road Transportation	$2,155,331	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 122 since FY2021.
69	Tlingit Haida Tribal Business Corporation Through Kira Aviation Services LLC Top NAICS codes 561210 Facilities Support Services	$2,152,564	0.1%	Rank history: #82 in FY2021, #100 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
70	Kitware Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,105,868	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 149 since FY2021.
71	Deloitte LLP Through Deloitte Consulting LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,028,002	0.1%	Rank history: #50 in FY2021, #50 in FY2023 and not on the FY2024–FY2025 lists; down 21 since FY2021.
72	Ashland Industrial Services, LLC Through A&E Elevator, LLC Top NAICS codes 238290 Other Building Equipment Contractors	$1,971,729	0.1%	Rank history: #100 in FY2021, #97 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2021.
73	Interactive Process Technology, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,943,160	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 37 since FY2021.
74	Gentech Associates Inc. Top NAICS codes 541219 Other Accounting Services 541611 Administrative Management and General Management Consulting Services	$1,934,801	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
75	CNF Technologies Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,927,200	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #31 in FY2025; new.
76	Redhorse Corporation Top NAICS codes 611430 Professional and Management Development Training 541512 Computer Systems Design Services	$1,921,790	0.1%	Rank history: #66 in FY2021, not on the FY2023 list, #98 in FY2024 and not on the FY2025 list; down 10 since FY2021.
77	PM2 Strategies LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$1,845,504	0.1%	Rank history: not on the FY2021 list, #81 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2021.
78	Concept Plus, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,832,472	0.1%	Rank history: #67 in FY2021 and not on the FY2023–FY2025 lists; down 11 since FY2021.
79	Special Aerospace Security Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$1,803,288	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 40 since FY2021.
80	Onto Technology, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,800,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
81	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541330 Engineering Services	$1,798,991	0.1%	Rank history: #64 in FY2021, #88 in FY2023, not on the FY2024 list and #80 in FY2025; down 17 since FY2021.
82	Bechtel Corp Through National Aerospace Solutions, LLC Top NAICS codes 541330 Engineering Services	$1,777,615	0.1%	Rank history: #60 in FY2021, #72 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2021.
83	Millerknoll Inc. Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$1,729,988	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 164 since FY2021.
84	Smiths Group PLC Through Smiths Detection Inc. Top NAICS codes 325414 Biological Product (except Diagnostic) Manufacturing	$1,592,819	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 266 since FY2021.
85	Millennium Health & Fitness, Inc. Top NAICS codes 561990 All Other Support Services	$1,571,934	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 50 since FY2021.
86	Cherokee Nation 2 awardees, including Cherokee CRC LLC and Cherokee Nation Management & Consulting, L.l.c.. Top NAICS codes 236220 Commercial and Institutional Building Construction 541990 All Other Professional, Scientific, and Technical Services	$1,518,233	0.1%	Rank history: not on the FY2021 list, #13 in FY2023 and not on the FY2024–FY2025 lists; up 39 since FY2021.
87	Imec Group, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,462,233	0.1%	Rank history: #69 in FY2021 and not on the FY2023–FY2025 lists; down 18 since FY2021.
88	Capital Brand Group LLC Top NAICS codes 561210 Facilities Support Services 236220 Commercial and Institutional Building Construction 238220 Plumbing, Heating, and Air-Conditioning Contractors	$1,448,828	0.1%	Rank history: #86 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
89	Zero Waste Solutions, Inc. Top NAICS codes 561210 Facilities Support Services	$1,404,462	0.1%	Rank history: #90 in FY2021 and not on the FY2023–FY2025 lists; up 1 since FY2021.
90	Aeyon LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,353,069	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 25 since FY2021.
91	CHS Middle East LLC Through Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$1,315,175	0.1%	Rank history: not on the FY2021 list, #96 in FY2023 and not on the FY2024–FY2025 lists; up 92 since FY2021.
92	HP Enterprise Services LLC 2 awardees, including Peraton Labs Inc. and Peraton Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,314,582	0.1%	Rank history: not on the FY2021 list, #16 in FY2023 and not on the FY2024–FY2025 lists; up 79 since FY2021.
93	Dynamis, Inc. Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$1,266,779	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 30 since FY2021.
94	Nelbud Services LLC Top NAICS codes 561210 Facilities Support Services	$1,257,240	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 17 since FY2021.
95	AM2 Solutions, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,239,066	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 83 since FY2021.
96	Custom Lawn Service, Inc. Top NAICS codes 561730 Landscaping Services	$1,228,614	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 77 since FY2021.
97	Datarobot Inc.	$1,149,879	0.1%	Rank history: not on the FY2021 list, #74 in FY2023 and not on the FY2024–FY2025 lists; new.
98	Great Lakes Sound & Vibration Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,133,185	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	HII Mission Technologies Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,125,423	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
100	Jasper Solutions Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,088,424	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; 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 $1.57 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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.

Quick answers