Top 100 Contractors in PSC R499: Other Professional Services, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	The Boeing Company 8 awardees, including Boeing Sikorsky Aircraft Support, LLC and Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$1,782,401,846	6.2%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; up 1 since FY2024.
2	Booz Allen Hamilton Holding Corporation 6 awardees, including Booz Allen Hamilton Inc. and Thunderyard Liberty JV LLC Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$1,725,147,687	6.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; down 1 since FY2024.
3	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$1,062,510,600	3.7%	Rank history: not on the FY2021 list, #4 in FY2022, #4 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Maximus Federal Services, Inc. Top agencies HHS (Department of Health and Human Services)	$946,267,525	3.3%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2024; up 2 since FY2024.
5	General Dynamics Corporation 10 awardees, including General Dynamics Information Technology, Inc., General Dynamics Land Systems Inc. and General Dynamics One Source LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$746,759,111	2.6%	Rank history: #6 in FY2021, #11 in FY2022, #5 in FY2023 and #3 in FY2024; down 2 since FY2024.
6	Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DOS (Department of State)	$737,927,283	2.6%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; up 1 since FY2024.
7	Huntington Ingalls Industries, Inc. 2 awardees, including HII Mission Technologies Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$668,426,669	2.3%	Rank history: #89 in FY2021, #18 in FY2022, #10 in FY2023 and #8 in FY2024; up 1 since FY2024.
8	Science Applications International Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$541,020,700	1.9%	Rank history: #11 in FY2021, #7 in FY2022, #6 in FY2023 and #9 in FY2024; up 1 since FY2024.
9	CACI International Inc. 6 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci Idt, LLC Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) USDA (Department of Agriculture)	$495,664,343	1.7%	Rank history: #8 in FY2021, #6 in FY2022, #8 in FY2023 and #10 in FY2024; up 1 since FY2024.
10	Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC and Safeguard Services LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$350,510,079	1.2%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; up 6 since FY2024.
11	Leidos Holdings, Inc. 11 awardees, including Leidos, Inc., Hanford Mission Integration Solutions, LLC and 1901 Group, LLC Top agencies Army (Department of the Army) DOE (Department of Energy) USAF (Department of the Air Force)	$338,949,715	1.2%	Rank history: #62 in FY2021, #54 in FY2022, #20 in FY2023 and #13 in FY2024; up 2 since FY2024.
12	V2X, Inc. 3 awardees, including V2X Aerospace LLC, V2X Systems LLC and Advantor Systems II LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$305,434,849	1.1%	Rank history: not on the FY2021–FY2024 lists; up 111 since FY2024.
13	Accenture Federal Services LLC 4 awardees, including Cognosante MVH LLC and Cognosante, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$304,160,951	1.1%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; up 6 since FY2024.
14	Olin Corporation Through Olin Winchester LLC Top agencies Army (Department of the Army)	$273,456,828	1.0%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 10 since FY2024.
15	Guidehouse Inc. 6 awardees, including Guidehouse Digital LLC, Peraton Technology Services Inc. and Aptim Federal Services, LLC Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DOS (Department of State)	$273,104,077	1.0%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; down 3 since FY2024.
16	Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) PBGC (Pension Benefit Guaranty Corporation)	$265,941,283	0.9%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list and #70 in FY2024; up 54 since FY2024.
17	Clark Construction Group LLC Top agencies Army (Department of the Army)	$262,369,041	0.9%	Rank history: not on the FY2021–FY2024 lists; up 174 since FY2024.
18	Serco Inc 2 awardees Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation) USAF (Department of the Air Force)	$256,925,385	0.9%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 1 since FY2024.
19	BCG Federal Corp. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$242,086,463	0.8%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; up 13 since FY2024.
20	Family Health International Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$222,282,326	0.8%	Rank history: not on the FY2021–FY2024 lists; up 98 since FY2024.
21	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) HHS (Department of Health and Human Services)	$211,085,966	0.7%	Rank history: not on the FY2021 list, #26 in FY2022, #25 in FY2023 and #20 in FY2024; down 1 since FY2024.
22	Parsons Corporation 4 awardees, including Parsons Government Services Inc., Ptsi Managed Services Inc. and Xator LLC Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Navy (Department of the Navy)	$210,796,137	0.7%	Rank history: #17 in FY2021, #17 in FY2022, #12 in FY2023 and #15 in FY2024; down 7 since FY2024.
23	Amentum Holdings, Inc. 9 awardees, including Amentum Services, Inc., Amentum Technology, Inc. and Centra Technology, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$204,983,587	0.7%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2024; up 62 since FY2024.
24	KBR Wyle Services LLC 6 awardees, including KBR Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$184,264,243	0.6%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; up 5 since FY2024.
25	Ernst & Young LLP 2 awardees Top agencies Army (Department of the Army) DOJ (Department of Justice) DOE (Department of Energy)	$165,157,755	0.6%	Rank history: #44 in FY2021, #37 in FY2022, not on the FY2023 list and #23 in FY2024; down 2 since FY2024.
26	International Business Machines Corporation 4 awardees Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$141,674,991	0.5%	Rank history: #30 in FY2021, #16 in FY2022, #30 in FY2023 and #30 in FY2024; up 4 since FY2024.
27	Soldierpoint Digital Health, LLC Top agencies VA (Department of Veterans Affairs)	$140,234,878	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
28	RTX Corporation 10 awardees, including Raytheon Company, Goodrich Corporation and V2X Aerospace LLC Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) WHS (DOD Washington Headquarters Service)	$136,752,967	0.5%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 5 since FY2024.
29	Sallyport Global Holdings Inc. Top agencies USAF (Department of the Air Force)	$134,741,521	0.5%	Rank history: not on the FY2021–FY2024 lists; up 212 since FY2024.
30	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) DOE (Department of Energy) GSA (General Services Administration)	$134,362,446	0.5%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #22 in FY2024; down 8 since FY2024.
31	ManTech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. and Unison Software Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) DHA (Defense Health Agency)	$123,453,088	0.4%	Rank history: not on the FY2021–FY2024 lists; up 88 since FY2024.
32	DAI Global LLC Top agencies USAID (US Agency for International Development)	$122,078,594	0.4%	Rank history: #24 in FY2021, #14 in FY2022, #16 in FY2023 and #14 in FY2024; down 18 since FY2024.
33	Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$116,515,480	0.4%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; up 6 since FY2024.
34	Strategic Analysis, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$110,468,683	0.4%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #55 in FY2024; up 21 since FY2024.
35	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$109,651,449	0.4%	Rank history: #64 in FY2021, #46 in FY2022, #39 in FY2023 and #47 in FY2024; up 12 since FY2024.
36	Arctic Slope Regional Corporation 12 awardees, including Agile Decision Sciences, LLC, Asrc Federal Professional Services, LLC and Broadleaf, Inc. Top agencies Army (Department of the Army) DCSA (Defense Counterintelligence and Security Agency) NASA (National Aeronautics and Space Administration)	$105,425,560	0.4%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; up 6 since FY2024.
37	Qlarant Integrity Solutions LLC Top agencies HHS (Department of Health and Human Services)	$98,267,574	0.3%	Rank history: not on the FY2021–FY2024 lists; up 106 since FY2024.
38	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$93,350,431	0.3%	Rank history: #20 in FY2021, #28 in FY2022, #26 in FY2023 and #18 in FY2024; down 20 since FY2024.
39	Govcio, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$88,580,754	0.3%	Rank history: not on the FY2021 list, #36 in FY2022, #62 in FY2023 and #60 in FY2024; up 21 since FY2024.
40	Deep Mile Networks LLC Top agencies DHA (Defense Health Agency)	$87,876,971	0.3%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #54 in FY2024; up 14 since FY2024.
41	The GEO Group, Inc. Top agencies DOJ (Department of Justice)	$86,947,550	0.3%	Rank history: #34 in FY2021, #32 in FY2022, #38 in FY2023 and #49 in FY2024; up 8 since FY2024.
42	Lockheed Martin Corporation 9 awardees, including Lockheed Martin Services, LLC and Lockheed Martin Integrated Systems, LLC Top agencies USAF (Department of the Air Force) DCMA (Defense Contract Management Agency)	$83,767,672	0.3%	Rank history: #46 in FY2021, #30 in FY2022, #47 in FY2023 and #38 in FY2024; down 4 since FY2024.
43	Asgn Incorporated Through ECS Federal, LLC Top agencies HHS (Department of Health and Human Services) DARPA (Defense Advanced Research Projects Agency)	$82,509,618	0.3%	Rank history: not on the FY2021–FY2024 lists; up 84 since FY2024.
44	Black Canyon Consulting LLC Top agencies HHS (Department of Health and Human Services)	$79,706,293	0.3%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #67 in FY2024; up 23 since FY2024.
45	Tetra Tech, Inc. 11 awardees, including Bluewater Federal Solutions, Inc., LS Technologies LLC and Ard, Inc. Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) DOE (Department of Energy)	$79,146,525	0.3%	Rank history: #39 in FY2021, #27 in FY2022, #36 in FY2023 and #36 in FY2024; down 9 since FY2024.
46	Semanticbits LLC 3 awardees, including ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services) NSF (National Science Foundation) DHA (Defense Health Agency)	$75,745,046	0.3%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 4 since FY2024.
47	Apogee Engineering, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$73,204,227	0.3%	Rank history: #56 in FY2021, #71 in FY2022, not on the FY2023 list and #77 in FY2024; up 30 since FY2024.
48	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$69,525,036	0.2%	Rank history: #88 in FY2021, #80 in FY2022 and not on the FY2023–FY2024 lists; up 64 since FY2024.
49	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$68,972,700	0.2%	Rank history: #41 in FY2021, #40 in FY2022, #27 in FY2023 and #24 in FY2024; down 25 since FY2024.
50	Miracle Systems LLC Top agencies DHS (Department of Homeland Security)	$67,156,126	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #80 in FY2024; up 30 since FY2024.
51	Halvik LLC Top agencies NASA (National Aeronautics and Space Administration) USSOCOM (United States Special Operations Command) Commerce (Department of Commerce)	$65,419,377	0.2%	Rank history: not on the FY2021 list, #72 in FY2022, #75 in FY2023 and #95 in FY2024; up 44 since FY2024.
52	Maveris LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$62,823,748	0.2%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2024; up 20 since FY2024.
53	Astrion Group, LLC Top agencies NASA (National Aeronautics and Space Administration)	$61,002,786	0.2%	Rank history: not on the FY2021–FY2024 lists; up 57 since FY2024.
54	Johns Hopkins University 4 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC, The Johns Hopkins Health System Corporation and Johns Hopkins Bayview Medical Center, Inc. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$60,907,883	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
55	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$60,097,619	0.2%	Rank history: #50 in FY2021, #56 in FY2022, #54 in FY2023 and #57 in FY2024; up 2 since FY2024.
56	Schafer Government Services, LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$60,043,549	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
57	Tactica Solutions LLC Top agencies Army (Department of the Army)	$59,993,182	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
58	Kpmg LLP Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DCSA (Defense Counterintelligence and Security Agency)	$58,961,931	0.2%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; down 17 since FY2024.
59	CGI Federal Inc. 2 awardees, including Sehlke Consulting LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior) Commerce (Department of Commerce)	$58,495,174	0.2%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 6 since FY2024.
60	Criterion Systems, L.L.C. Top agencies DOE (Department of Energy)	$57,914,035	0.2%	Rank history: not on the FY2021–FY2024 lists; up 46 since FY2024.
61	Analytic Services Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$57,761,808	0.2%	Rank history: not on the FY2021 list, #90 in FY2022, #79 in FY2023 and #71 in FY2024; up 10 since FY2024.
62	Valiant Global Defense Services Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) Army (Department of the Army)	$57,210,946	0.2%	Rank history: not on the FY2021–FY2024 lists; up 141 since FY2024.
63	Great Hill Solutions, LLC Top agencies DOS (Department of State) DSCA (Defense Security Cooperation Agency) HHS (Department of Health and Human Services)	$56,351,578	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #68 in FY2024; up 5 since FY2024.
64	Equifax Workforce Solutions LLC Top agencies SSA (Social Security Administration) DOJ (Department of Justice)	$51,844,665	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
65	System High Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$50,500,526	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #88 in FY2024; up 23 since FY2024.
66	Mele Associates Inc. Top agencies DOE (Department of Energy)	$49,487,727	0.2%	Rank history: not on the FY2021 list, #95 in FY2022 and not on the FY2023–FY2024 lists; up 64 since FY2024.
67	Delta Solutions & Strategies LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command)	$49,054,227	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 27 since FY2024.
68	Mckinsey & Company, Inc. Washington D.c. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$48,229,308	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
69	Concept Solutions LLC Top agencies DOT (Department of Transportation)	$46,880,610	0.2%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #98 in FY2024; up 29 since FY2024.
70	Systems Planning and Analysis, Inc. Top agencies DHS (Department of Homeland Security) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$45,654,981	0.2%	Rank history: #94 in FY2021, #83 in FY2022, #86 in FY2023 and not on the FY2024 list; up 44 since FY2024.
71	Cbeyondata LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$45,539,119	0.2%	Rank history: not on the FY2021–FY2024 lists; up 375 since FY2024.
72	Calibre Systems Inc. Top agencies Army (Department of the Army) OPM (Office of Personnel Management)	$44,487,470	0.2%	Rank history: #60 in FY2021, #63 in FY2022, #65 in FY2023 and #73 in FY2024; up 1 since FY2024.
73	Chenega Global Protection, LLC Top agencies NASA (National Aeronautics and Space Administration)	$44,358,724	0.2%	Rank history: not on the FY2021–FY2024 lists; up 82 since FY2024.
74	Celeen LLC Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Army (Department of the Army)	$43,896,996	0.2%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 19 since FY2024.
75	Techsource, LLC Top agencies DOE (Department of Energy) Navy (Department of the Navy)	$42,729,280	0.1%	Rank history: not on the FY2021–FY2024 lists; up 33 since FY2024.
76	C2 Alaska, LLC Top agencies SEC (Securities and Exchange Commission) USAF (Department of the Air Force) SSA (Social Security Administration)	$42,573,033	0.1%	Rank history: not on the FY2021–FY2024 lists; up 66 since FY2024.
77	Threat Tec, LLC Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) Army (Department of the Army)	$41,738,776	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2024 list; up 27 since FY2024.
78	Magellan Federal Inc. Top agencies DODEA (Department of Defense Education Activity) HHS (Department of Health and Human Services)	$41,687,687	0.1%	Rank history: not on the FY2021–FY2024 lists; up 60 since FY2024.
79	Prkk LLC Top agencies USAF (Department of the Air Force)	$40,146,210	0.1%	Rank history: not on the FY2021–FY2024 lists; up 70 since FY2024.
80	Nakupuna Consulting LLC Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$39,649,826	0.1%	Rank history: not on the FY2021–FY2024 lists; up 92 since FY2024.
81	Endyna, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$39,428,674	0.1%	Rank history: not on the FY2021–FY2024 lists; up 34 since FY2024.
82	Sapient Corporation Through Plowshare Group, Inc. Top agencies HHS (Department of Health and Human Services)	$39,000,000	0.1%	Rank history: #43 in FY2021, #48 in FY2022, #43 in FY2023 and #58 in FY2024; down 24 since FY2024.
83	Gemini Industries Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$38,995,123	0.1%	Rank history: not on the FY2021–FY2024 lists; up 198 since FY2024.
84	Oak Ridge Associated Universities, Incorporated Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$38,969,650	0.1%	Rank history: #75 in FY2021, #68 in FY2022, #77 in FY2023 and #86 in FY2024; up 2 since FY2024.
85	Chenega Enterprise Systems & Solutions, LLC Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DOE (Department of Energy)	$38,833,584	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #90 in FY2023 and #79 in FY2024; down 6 since FY2024.
86	Choctaw Premier Services LLC Top agencies Army (Department of the Army)	$38,680,044	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
87	WSP USA Environment & Infrastructure Inc. Top agencies DHS (Department of Homeland Security) EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$38,552,069	0.1%	Rank history: not on the FY2021–FY2024 lists; up 121 since FY2024.
88	Securitas Electronic Security Inc. Through Paragon Systems Inc. Top agencies HHS (Department of Health and Human Services) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$38,540,774	0.1%	Rank history: not on the FY2021–FY2024 lists; up 99 since FY2024.
89	Digiflight Incorporated Top agencies Army (Department of the Army)	$37,853,441	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2024 list; up 213 since FY2024.
90	Coventbridge (USA) LLC Top agencies HHS (Department of Health and Human Services)	$37,342,124	0.1%	Rank history: not on the FY2021–FY2024 lists; up 49 since FY2024.
91	Augustine Consulting Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$36,850,924	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
92	Credence Dynamo Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$36,580,285	0.1%	Rank history: not on the FY2021–FY2024 lists; up 124 since FY2024.
93	C2C Innovative Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$36,571,278	0.1%	Rank history: not on the FY2021–FY2024 lists; up 39 since FY2024.
94	Poplicus Incorporated Top agencies Navy (Department of the Navy) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$36,250,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and #44 in FY2024; down 50 since FY2024.
95	Riverside Research Institute Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$36,202,612	0.1%	Rank history: not on the FY2021–FY2024 lists; up 63 since FY2024.
96	PAL Technologies Inc Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$36,053,974	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Aptive HTG LLC Top agencies VA (Department of Veterans Affairs)	$36,011,541	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024 list; up 29 since FY2024.
98	Index Analytics LLC Top agencies HHS (Department of Health and Human Services)	$35,407,030	0.1%	Rank history: not on the FY2021–FY2024 lists; up 146 since FY2024.
99	Ameresco Inc. 3 awardees, including Ameresco Select, Inc. and CMI Management, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$35,269,751	0.1%	Rank history: not on the FY2021–FY2024 lists; up 76 since FY2024.
100	Andrew Morgan, LLC Top agencies DHA (Defense Health Agency) Navy (Department of the Navy)	$35,162,340	0.1%	Rank history: not on the FY2021–FY2024 lists; up 207 since FY2024.

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 $28.6 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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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