Top 100 Contractors in NAICS 54169: Other Scientific and Technical Consulting Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 54169: Other Scientific and Technical Consulting Services, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 32% of NAICS 54169 contract dollars from July 2025 through June 2026

Contract obligations: $1,812,857,499 Net of deobligations, by contracts coded NAICS 54169 or a code under it
Contractors: 788 Parent companies with an obligation
Largest contractor: General Dynamics Corporation $139 million, 6.9% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	General Dynamics Corporation 3 awardees, including General Dynamics One Source LLC and General Dynamics Information Technology, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$139,241,468	6.9%	Rank history: #6 in FY2021, #15 in FY2022, #12 in FY2023, #3 in FY2024 and #3 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Parsons Corporation Through Parsons Government Services Inc. Top agencies USAF (Department of the Air Force)	$125,210,322	6.2%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023, #7 in FY2024 and #1 in FY2025; up 2 since Jul 2024–Jun 2025.
3	Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$81,591,107	4.0%	Rank history: not on the FY2021 list, #49 in FY2022, not on the FY2023 list, #2 in FY2024 and #4 in FY2025; unchanged since Jul 2024–Jun 2025.
4	System High Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) MDA (DOD Missile Defense Agency) Army (Department of the Army)	$77,016,244	3.8%	Rank history: not on the FY2021 list, #9 in FY2022, #7 in FY2023, #6 in FY2024 and #5 in FY2025; up 6 since Jul 2024–Jun 2025.
5	Lockheed Martin Corporation 3 awardees Top agencies Army (Department of the Army)	$70,902,410	3.5%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #1 in FY2024 and #2 in FY2025; down 4 since Jul 2024–Jun 2025.
6	Pundir Group, Inc. Top agencies GSA (General Services Administration) Navy (Department of the Navy) DOJ (Department of Justice)	$37,188,917	1.8%	Rank history: not on the FY2021 list, #67 in FY2022, #44 in FY2023, #29 in FY2024 and #15 in FY2025; up 13 since Jul 2024–Jun 2025.
7	V2X, Inc. Through V2X Aerospace LLC Top agencies USAF (Department of the Air Force)	$31,914,116	1.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
8	Michael Stapleton Associates, Ltd. Top agencies DOS (Department of State)	$30,126,107	1.5%	Rank history: #7 in FY2021, #16 in FY2022, #14 in FY2023, #12 in FY2024 and #10 in FY2025; up 3 since Jul 2024–Jun 2025.
9	Unwin Co Top agencies DOE (Department of Energy)	$29,341,481	1.5%	Rank history: #10 in FY2021, #7 in FY2022, #6 in FY2023, #9 in FY2024 and #13 in FY2025; up 3 since Jul 2024–Jun 2025.
10	Goldbelt Professional Services, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$29,089,765	1.4%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #28 in FY2025; up 50 since Jul 2024–Jun 2025.
11	ManTech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies USAF (Department of the Air Force)	$28,236,216	1.4%	Rank history: #4 in FY2021, #4 in FY2022, #8 in FY2023, #13 in FY2024 and #7 in FY2025; down 6 since Jul 2024–Jun 2025.
12	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$26,783,052	1.3%	Rank history: #57 in FY2021, #13 in FY2022, #9 in FY2023, #11 in FY2024 and #12 in FY2025; up 1 since Jul 2024–Jun 2025.
13	Ameresco Inc. Through Ameresco Select, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$25,966,547	1.3%	Rank history: #14 in FY2021, #25 in FY2022, #28 in FY2023, #31 in FY2024 and #20 in FY2025; up 14 since Jul 2024–Jun 2025.
14	Gap Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$21,900,389	1.1%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #14 in FY2025; unchanged since Jul 2024–Jun 2025.
15	Deck Prism LLC Top agencies DOE (Department of Energy)	$20,642,534	1.0%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 143 since Jul 2024–Jun 2025.
16	Hdr, Inc. Through HDR Environmental, Operations and Construction, Inc. Top agencies Navy (Department of the Navy)	$19,565,582	1.0%	Rank history: #29 in FY2021, #45 in FY2022, #49 in FY2023, #25 in FY2024 and #24 in FY2025; up 10 since Jul 2024–Jun 2025.
17	RMC 2021 LLC Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$19,153,280	0.9%	Rank history: #39 in FY2021, #11 in FY2022, #15 in FY2023, #28 in FY2024 and #19 in FY2025; up 4 since Jul 2024–Jun 2025.
18	Essex Management LLC Top agencies HHS (Department of Health and Human Services)	$18,367,503	0.9%	Rank history: #22 in FY2021, #22 in FY2022, #21 in FY2023, #27 in FY2024 and #23 in FY2025; up 2 since Jul 2024–Jun 2025.
19	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$17,813,608	0.9%	Rank history: not on the FY2021 list, #65 in FY2022, #30 in FY2023, #14 in FY2024 and #6 in FY2025; down 12 since Jul 2024–Jun 2025.
20	Noblis, Inc. Top agencies Army (Department of the Army)	$15,240,624	0.8%	Rank history: #59 in FY2021, #30 in FY2022, #41 in FY2023, #36 in FY2024 and #38 in FY2025; up 15 since Jul 2024–Jun 2025.
21	JP Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$15,227,216	0.8%	Rank history: #23 in FY2021, #26 in FY2022, #17 in FY2023, #16 in FY2024 and not on the FY2025 list; down 5 since Jul 2024–Jun 2025.
22	Kegman Inc. Top agencies USAF (Department of the Air Force)	$15,072,022	0.7%	Rank history: #69 in FY2021, #54 in FY2022, #35 in FY2023, #34 in FY2024 and #27 in FY2025; up 10 since Jul 2024–Jun 2025.
23	Battelle Memorial Institute Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$13,739,637	0.7%	Rank history: #33 in FY2021, #31 in FY2022, #40 in FY2023, #32 in FY2024 and #26 in FY2025; up 8 since Jul 2024–Jun 2025.
24	Janus Research Group, LLC Top agencies Army (Department of the Army)	$13,703,678	0.7%	Rank history: not on the FY2021 list, #20 in FY2022, #18 in FY2023, #21 in FY2024 and #22 in FY2025; down 6 since Jul 2024–Jun 2025.
25	National Academy of Sciences Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOT (Department of Transportation)	$13,471,322	0.7%	Rank history: #9 in FY2021, #18 in FY2022, #11 in FY2023, #19 in FY2024 and #59 in FY2025; unchanged since Jul 2024–Jun 2025.
26	Olgoonik Solutions LLC Top agencies DOS (Department of State)	$12,997,337	0.6%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; up 41 since Jul 2024–Jun 2025.
27	National Opinion Research Center Top agencies HHS (Department of Health and Human Services)	$12,760,614	0.6%	Rank history: #64 in FY2021, not on the FY2022 list, #32 in FY2023, #50 in FY2024 and #37 in FY2025; up 24 since Jul 2024–Jun 2025.
28	Nana Regional Corporation Inc. 5 awardees, including Akima Data Management LLC and TKC Global Solutions, LLC Top agencies DTRA (Defense Threat Reduction Agency) DOE (Department of Energy)	$12,142,676	0.6%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and #25 in FY2025; up 12 since Jul 2024–Jun 2025.
29	Tatitlek Government Services, LLC Top agencies DOS (Department of State)	$11,617,979	0.6%	Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and #35 in FY2025; down 1 since Jul 2024–Jun 2025.
30	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$11,268,079	0.6%	Rank history: #3 in FY2021, #28 in FY2022, #19 in FY2023, #23 in FY2024 and #16 in FY2025; down 13 since Jul 2024–Jun 2025.
31	Venergy Group LLC Top agencies VA (Department of Veterans Affairs) DOL (Department of Labor) USDA (Department of Agriculture)	$10,873,561	0.5%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 58 since Jul 2024–Jun 2025.
32	T3I, Inc. Top agencies USAF (Department of the Air Force)	$10,691,852	0.5%	Rank history: not on the FY2021–FY2025 lists; up 395 since Jul 2024–Jun 2025.
33	The Brattle Group Inc Top agencies Treasury (Department of the Treasury) FTC (Federal Trade Commission)	$10,511,825	0.5%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; up 88 since Jul 2024–Jun 2025.
34	Harvard Pilgrim Health Care, Inc. Top agencies HHS (Department of Health and Human Services)	$10,483,494	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Yale New Haven Health Services Corporation Top agencies HHS (Department of Health and Human Services)	$10,342,086	0.5%	Rank history: #15 in FY2021, #19 in FY2022, #23 in FY2023, #30 in FY2024 and #30 in FY2025; down 11 since Jul 2024–Jun 2025.
36	K2 Group, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$10,265,820	0.5%	Rank history: #61 in FY2021, #64 in FY2022, not on the FY2023 list, #59 in FY2024 and #42 in FY2025; up 17 since Jul 2024–Jun 2025.
37	MRIGLOBAL Top agencies HHS (Department of Health and Human Services)	$10,253,810	0.5%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #54 in FY2024 and #45 in FY2025; up 15 since Jul 2024–Jun 2025.
38	Technology Security Associates, Inc. Top agencies Navy (Department of the Navy)	$10,168,194	0.5%	Rank history: #67 in FY2021, #60 in FY2022, #64 in FY2023, #43 in FY2024 and #52 in FY2025; up 5 since Jul 2024–Jun 2025.
39	Fedwriters, Inc. Top agencies Commerce (Department of Commerce) Navy (Department of the Navy)	$9,904,917	0.5%	Rank history: not on the FY2021 list, #83 in FY2022, #78 in FY2023, #61 in FY2024 and #33 in FY2025; up 11 since Jul 2024–Jun 2025.
40	Mobius Consulting LLC Top agencies MDA (DOD Missile Defense Agency)	$9,752,000	0.5%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #50 in FY2025; up 28 since Jul 2024–Jun 2025.
41	Mathematica Inc. Top agencies HHS (Department of Health and Human Services) MCC (Millennium Challenge Corporation)	$9,333,044	0.5%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #46 in FY2025; down 7 since Jul 2024–Jun 2025.
42	W R Systems Ltd. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$9,296,398	0.5%	Rank history: #53 in FY2021, not on the FY2022–FY2023 lists, #58 in FY2024 and #79 in FY2025; up 16 since Jul 2024–Jun 2025.
43	Ecodata Analytics LLC Top agencies DOI (Department of the Interior)	$8,939,007	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Rainmakers Strategic Solutions LLC Top agencies HHS (Department of Health and Human Services)	$8,448,710	0.4%	Rank history: not on the FY2021–FY2023 lists, #85 in FY2024 and #71 in FY2025; up 31 since Jul 2024–Jun 2025.
45	Guidehouse Digital LLC Top agencies HHS (Department of Health and Human Services)	$8,382,858	0.4%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	American Institutes for Research In the Behavioral Sciences Top agencies HHS (Department of Health and Human Services)	$8,350,416	0.4%	Rank history: #95 in FY2021, #78 in FY2022, #70 in FY2023, #52 in FY2024 and #47 in FY2025; up 8 since Jul 2024–Jun 2025.
47	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies USAF (Department of the Air Force) DOS (Department of State) HHS (Department of Health and Human Services)	$8,147,666	0.4%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48	Serco Inc Top agencies Navy (Department of the Navy)	$7,912,383	0.4%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #68 in FY2024 and not on the FY2025 list; up 29 since Jul 2024–Jun 2025.
49	A.i.s., Inc. Top agencies Commerce (Department of Commerce)	$7,901,860	0.4%	Rank history: #83 in FY2021, not on the FY2022–FY2023 lists, #99 in FY2024 and #56 in FY2025; up 45 since Jul 2024–Jun 2025.
50	Kennell & Associates Inc. Top agencies DHA (Defense Health Agency)	$7,480,823	0.4%	Rank history: #70 in FY2021, #75 in FY2022, #69 in FY2023, #67 in FY2024 and #54 in FY2025; up 9 since Jul 2024–Jun 2025.
51	Westat, Inc. Top agencies HHS (Department of Health and Human Services)	$7,229,339	0.4%	Rank history: #18 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52	Arctic Slope Regional Corporation 3 awardees, including Broadleaf, Inc., Asrc Federal Facilities Logistics LLC and Asrc Federal Technology Solutions, LLC Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) CFTC (Commodity Futures Trading Commission)	$7,195,197	0.4%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #40 in FY2025; up 10 since Jul 2024–Jun 2025.
53	Chinook Systems Inc. Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense) GSA (General Services Administration)	$6,480,274	0.3%	Rank history: not on the FY2021–FY2023 lists, #76 in FY2024 and #55 in FY2025; up 197 since Jul 2024–Jun 2025.
54	Berkeley Research Group, LLC Top agencies FTC (Federal Trade Commission) DOL (Department of Labor)	$6,007,939	0.3%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 20 since Jul 2024–Jun 2025.
55	Bastion Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$5,931,122	0.3%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 67 since Jul 2024–Jun 2025.
56	WSP USA Environment & Infrastructure Inc. Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior)	$5,733,585	0.3%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #17 in FY2025; down 33 since Jul 2024–Jun 2025.
57	Systex, Inc. Top agencies HHS (Department of Health and Human Services)	$5,693,734	0.3%	Rank history: #79 in FY2021, #89 in FY2022, #79 in FY2023, #82 in FY2024 and #65 in FY2025; up 9 since Jul 2024–Jun 2025.
58	Maximus Federal Services, Inc. Top agencies OPM (Office of Personnel Management)	$5,432,046	0.3%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Jul 2024–Jun 2025.
59	Swmg Productions Inc. Top agencies Army (Department of the Army)	$5,302,376	0.3%	Rank history: #55 in FY2021, #55 in FY2022, not on the FY2023 list, #74 in FY2024 and #49 in FY2025; down 2 since Jul 2024–Jun 2025.
60	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$5,044,499	0.2%	Rank history: #19 in FY2021, #23 in FY2022, #13 in FY2023, #94 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
61	DT Global LLC Top agencies USAID (US Agency for International Development)	$5,000,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 27 since Jul 2024–Jun 2025.
62	22Nd Century Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$4,774,057	0.2%	Rank history: not on the FY2021 list, #68 in FY2022, #57 in FY2023, not on the FY2024 list and #64 in FY2025; up 20 since Jul 2024–Jun 2025.
63	Academi Training Center LLC Top agencies DOS (Department of State)	$4,673,689	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 90 since Jul 2024–Jun 2025.
64	ABT Global LLC Top agencies HHS (Department of Health and Human Services)	$4,528,463	0.2%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; down 28 since Jul 2024–Jun 2025.
65	Republic Mission Systems, Inc. Top agencies Army (Department of the Army)	$4,399,040	0.2%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Jul 2024–Jun 2025.
66	The Meridian Group DC LLC Top agencies Navy (Department of the Navy)	$4,381,229	0.2%	Rank history: not on the FY2021–FY2025 lists; up 124 since Jul 2024–Jun 2025.
67	Chickasaw Business Solutions, LLC Top agencies USDA (Department of Agriculture)	$4,376,053	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, not on the FY2024 list and #80 in FY2025; up 103 since Jul 2024–Jun 2025.
68	KBR Wyle Services LLC 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$4,320,992	0.2%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #11 in FY2025; down 59 since Jul 2024–Jun 2025.
69	CCS Associates, Inc. Top agencies HHS (Department of Health and Human Services)	$4,250,314	0.2%	Rank history: #60 in FY2021, #82 in FY2022, #89 in FY2023, #80 in FY2024 and #81 in FY2025; down 8 since Jul 2024–Jun 2025.
70	Code360 Inc. Top agencies HHS (Department of Health and Human Services)	$4,111,965	0.2%	Rank history: not on the FY2021–FY2025 lists; up 45 since Jul 2024–Jun 2025.
71	Deloitte 2 awardees, including Deloitte Consulting LLP Top agencies USTDA (United States Trade and Development Agency) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$4,056,952	0.2%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #18 in FY2025; down 56 since Jul 2024–Jun 2025.
72	Riverside Research Institute Top agencies USAF (Department of the Air Force)	$4,013,743	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 51 since Jul 2024–Jun 2025.
73	Sol Engineering Services, LLC Top agencies Army (Department of the Army)	$3,935,001	0.2%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 40 since Jul 2024–Jun 2025.
74	Science Applications International Corporation Top agencies DOT (Department of Transportation)	$3,868,100	0.2%	Rank history: #31 in FY2021, #42 in FY2022, #46 in FY2023, #60 in FY2024 and #39 in FY2025; down 32 since Jul 2024–Jun 2025.
75	The CNA Corporation Top agencies DHS (Department of Homeland Security)	$3,842,844	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 20 since Jul 2024–Jun 2025.
76	Rivit Alliance LLC Top agencies HHS (Department of Health and Human Services)	$3,601,250	0.2%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 30 since Jul 2024–Jun 2025.
77	Gulf South Research Corp Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$3,431,138	0.2%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; up 43 since Jul 2024–Jun 2025.
78	Float Partners LLC Top agencies Commerce (Department of Commerce)	$3,265,959	0.2%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #73 in FY2025; unchanged since Jul 2024–Jun 2025.
79	Acc3 International Incorporated Top agencies USAF (Department of the Air Force)	$3,229,123	0.2%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #93 in FY2025; up 1 since Jul 2024–Jun 2025.
80	Apex Analytics Group, Inc. Top agencies Army (Department of the Army)	$3,138,685	0.2%	Rank history: not on the FY2021–FY2025 lists; up 38 since Jul 2024–Jun 2025.
81	Burgman Technical Services, LLC Top agencies USAF (Department of the Air Force)	$3,133,513	0.2%	Rank history: not on the FY2021–FY2025 lists; up 61 since Jul 2024–Jun 2025.
82	Bates White, LLC Top agencies DOJ (Department of Justice) FTC (Federal Trade Commission) Treasury (Department of the Treasury)	$3,080,367	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #85 in FY2023, #64 in FY2024 and not on the FY2025 list; up 47 since Jul 2024–Jun 2025.
83	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) NRC (Nuclear Regulatory Commission)	$3,075,746	0.2%	Rank history: #93 in FY2021, #98 in FY2022, #72 in FY2023, #95 in FY2024 and #99 in FY2025; down 13 since Jul 2024–Jun 2025.
84	JBW Feditc JV LLC Top agencies Army (Department of the Army)	$3,016,975	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 28 since Jul 2024–Jun 2025.
85	Econometrica, Inc. Top agencies HHS (Department of Health and Human Services)	$3,016,641	0.1%	Rank history: not on the FY2021–FY2025 lists; up 29 since Jul 2024–Jun 2025.
86	Sancorp Consulting, LLC Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$2,962,398	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; down 3 since Jul 2024–Jun 2025.
87	Ascendant Program Services, LLC Top agencies USTDA (United States Trade and Development Agency)	$2,933,594	0.1%	Rank history: not on the FY2021–FY2025 lists; up 41 since Jul 2024–Jun 2025.
88	Chickasaw Federal Health, LLC Top agencies HHS (Department of Health and Human Services)	$2,923,587	0.1%	Rank history: not on the FY2021–FY2025 lists; up 63 since Jul 2024–Jun 2025.
89	S.P. Cramer & Associates, Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$2,907,189	0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #79 in FY2024 and #60 in FY2025; down 3 since Jul 2024–Jun 2025.
90	Fort Belknap Indian Community Through Buffalo Horse Inc. Top agencies OSD (Office of the Secretary of Defense)	$2,887,872	0.1%	Rank history: not on the FY2021–FY2025 lists; up 27 since Jul 2024–Jun 2025.
91	Agile It Synergy, LLC Top agencies Navy (Department of the Navy)	$2,877,742	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 2 since Jul 2024–Jun 2025.
92	Bowhead Marine Support Services, LLC Top agencies Navy (Department of the Navy)	$2,845,110	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 72 since Jul 2024–Jun 2025.
93	Valiant Global Defense Services Inc. Top agencies Army (Department of the Army)	$2,757,032	0.1%	Rank history: not on the FY2021–FY2025 lists; up 66 since Jul 2024–Jun 2025.
94	Alvarez & Marsal Federal, LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,750,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Seventh Emergence Solutions, LLC Top agencies Army (Department of the Army)	$2,698,468	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	D7, LLC Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force)	$2,677,831	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 4 since Jul 2024–Jun 2025.
97	Phigenics LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$2,665,229	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 4 since Jul 2024–Jun 2025.
98	Aerovironment, Inc. Through Bluehalo LLC Top agencies Army (Department of the Army)	$2,634,241	0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
99	Armed Forces Reunions Inc. Top agencies Navy (Department of the Navy)	$2,632,850	0.1%	Rank history: not on the FY2021–FY2025 lists; up 113 since Jul 2024–Jun 2025.
100	Digitalis Commons, Inc. Top agencies HHS (Department of Health and Human Services)	$2,620,429	0.1%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and not on the FY2025 list; down 56 since Jul 2024–Jun 2025.

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100 of 788 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54169

Code	Net obligations	Largest contractor
541690 Other Scientific and Technical Consulting Services	$1,812,857,499	General Dynamics Corporation

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 $2.02 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 54169 contractors in Jul 2025–Jun 2026?

1. General Dynamics Corporation ($139M), 2. Parsons Corporation ($125M), 3. Kelly Services, Inc. ($81.6M), 4. System High Corporation ($77M), 5. Lockheed Martin Corporation ($70.9M), 6. Pundir Group, Inc. ($37.2M), 7. V2X, Inc. ($31.9M), 8. Michael Stapleton Associates, Ltd. ($30.1M), 9. Unwin Co ($29.3M), 10. Goldbelt Professional Services, LLC ($29.1M).

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