Top 100 Contractors in NAICS 5619: Other Support Services, FY2024

Name: Top 100 Contractors in NAICS 5619: Other Support Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 71% of FY2024 NAICS 5619 contract dollars

Contract obligations: $2,513,585,482 Net of deobligations, by contracts coded NAICS 5619 or a code under it
Contractors: 1,107 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $814 million, 30.0% 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	Lockheed Martin Corporation 3 awardees, including Sikorsky Aircraft Corporation Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) Army (Department of the Army)	$813,553,790	30.0%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #1 in FY2025; up 1 since FY2023.
2	RTX Corporation 3 awardees, including Raytheon Company Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$702,287,865	25.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
3	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$133,557,140	4.9%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023 and #3 in FY2025; unchanged since FY2023.
4	CGI Federal Inc. Top agencies DOS (Department of State)	$77,246,991	2.9%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
5	Atkins Nuclear Secured Holdings Corporation Through Isotek Systems, LLC Top agencies DOE (Department of Energy)	$54,220,295	2.0%	Rank history: #4 in FY2021, #4 in FY2022, #6 in FY2023 and #4 in FY2025; up 1 since FY2023.
6	Techtrans International Inc. Top agencies Army (Department of the Army)	$37,182,028	1.4%	Rank history: #10 in FY2021, #7 in FY2022, #9 in FY2023 and #6 in FY2025; up 3 since FY2023.
7	Trace Inc. 2 awardees Top agencies DECA (Defense Commissary Agency)	$33,384,465	1.2%	Rank history: #13 in FY2021, #11 in FY2022, #10 in FY2023 and #7 in FY2025; up 3 since FY2023.
8	Freeman Decorating Co. Top agencies DOS (Department of State) Army (Department of the Army) Commerce (Department of Commerce)	$30,954,384	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
9	Chenega Global Protection, LLC Top agencies NASA (National Aeronautics and Space Administration)	$25,978,840	1.0%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
10	Arcus Group, LLC Top agencies DHS (Department of Homeland Security)	$23,153,087	0.9%	Rank history: #44 in FY2021, #48 in FY2022, #18 in FY2023 and #8 in FY2025; up 8 since FY2023.
11	Sierra Nevada Company, LLC 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$22,070,529	0.8%	Rank history: not on the FY2021 list, #6 in FY2022, #7 in FY2023 and #11 in FY2025; down 4 since FY2023.
12	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DOE (Department of Energy) USAF (Department of the Air Force)	$21,958,610	0.8%	Rank history: #11 in FY2021, #3 in FY2022, #5 in FY2023 and #10 in FY2025; down 7 since FY2023.
13	Lamain Industries LLC Top agencies DECA (Defense Commissary Agency)	$20,547,435	0.8%	Rank history: #27 in FY2021, #27 in FY2022, #14 in FY2023 and #12 in FY2025; up 1 since FY2023.
14	Checkmate Global, LLC Top agencies DHS (Department of Homeland Security)	$18,967,892	0.7%	Rank history: #15 in FY2021, not on the FY2022 list, #99 in FY2023 and #67 in FY2025; up 85 since FY2023.
15	Professional and Scientific Associates, Inc. 2 awardees Top agencies Commerce (Department of Commerce) GSA (General Services Administration) HHS (Department of Health and Human Services)	$18,518,530	0.7%	Rank history: #30 in FY2021, #9 in FY2022, #11 in FY2023 and #56 in FY2025; down 4 since FY2023.
16	Tetra Tech, Inc. 2 awardees, including Ard, Inc. and Management Systems International, Inc. Top agencies USAID (US Agency for International Development)	$17,552,327	0.6%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2025 list; up 6 since FY2023.
17	Vertex Modernization and Sustainment LLC Top agencies USAF (Department of the Air Force)	$14,058,366	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
18	CW Resources, Inc. Top agencies DECA (Defense Commissary Agency)	$13,165,514	0.5%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
19	Pride Industries Top agencies DECA (Defense Commissary Agency)	$12,342,002	0.5%	Rank history: #16 in FY2021, #18 in FY2022, #12 in FY2023 and #15 in FY2025; down 7 since FY2023.
20	Scientific Consulting Group Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$12,095,200	0.4%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #27 in FY2025; up 3 since FY2023.
21	Industries for the Blind and Visually Impaired, Inc. Top agencies Navy (Department of the Navy)	$11,629,170	0.4%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #41 in FY2025; up 8 since FY2023.
22	Communication Methods, LLC Top agencies DECA (Defense Commissary Agency)	$11,457,201	0.4%	Rank history: #34 in FY2021, #17 in FY2022, #24 in FY2023 and #16 in FY2025; up 2 since FY2023.
23	Chenega Security California Corporation Top agencies USAF (Department of the Air Force)	$11,408,454	0.4%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; up 167 since FY2023.
24	Aphena Pharma Solutions-Tennessee, LLC Top agencies VA (Department of Veterans Affairs)	$10,388,531	0.4%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
25	Pacarctic, LLC Top agencies DOJ (Department of Justice)	$10,050,065	0.4%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
26	Job Options, Incorporated Top agencies DECA (Defense Commissary Agency)	$8,902,387	0.3%	Rank history: #20 in FY2021, #20 in FY2022, #15 in FY2023 and #21 in FY2025; down 11 since FY2023.
27	Galapagos Federal Systems LLC Top agencies USAF (Department of the Air Force)	$8,655,653	0.3%	Rank history: #52 in FY2021, #51 in FY2022, #34 in FY2023 and #32 in FY2025; up 7 since FY2023.
28	Servtech Top agencies DECA (Defense Commissary Agency)	$8,069,348	0.3%	Rank history: #68 in FY2021, #41 in FY2022, #41 in FY2023 and #18 in FY2025; up 13 since FY2023.
29	The Chenega Corporation Through Chenega Global Protection, LLC Top agencies NASA (National Aeronautics and Space Administration)	$7,874,974	0.3%	Rank history: not on the FY2021 list, #15 in FY2022, #8 in FY2023 and not on the FY2025 list; down 21 since FY2023.
30	L L Brooks Enterprises Inc. Top agencies DECA (Defense Commissary Agency)	$7,299,955	0.3%	Rank history: #41 in FY2021, #56 in FY2022, #27 in FY2023 and #23 in FY2025; down 3 since FY2023.
31	Alares LLC Top agencies VA (Department of Veterans Affairs)	$6,822,082	0.3%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; up 125 since FY2023.
32	Iron Mountain Incorporated 2 awardees, including Iron Mountain Information Management LLC Top agencies Smithsonian (Smithsonian Institution) DOJ (Department of Justice)	$6,812,572	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force)	$6,557,969	0.2%	Rank history: #12 in FY2021, #8 in FY2022, #19 in FY2023 and not on the FY2025 list; down 14 since FY2023.
34	EDJ Associates, Inc. Top agencies NSF (National Science Foundation) DOT (Department of Transportation) Treasury (Department of the Treasury)	$6,282,533	0.2%	Rank history: #56 in FY2021, #40 in FY2022, #38 in FY2023 and #59 in FY2025; up 4 since FY2023.
35	Echelon Services, LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$6,161,367	0.2%	Rank history: not on the FY2021 list, #37 in FY2022, #25 in FY2023 and #29 in FY2025; down 10 since FY2023.
36	W. Harris, Government Services Contractor, Inc. Top agencies DECA (Defense Commissary Agency)	$6,077,266	0.2%	Rank history: #61 in FY2021, #22 in FY2022, #32 in FY2023 and #24 in FY2025; down 4 since FY2023.
37	Ponderful, LLC Top agencies DECA (Defense Commissary Agency)	$6,059,861	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, #58 in FY2023 and #20 in FY2025; up 21 since FY2023.
38	C.j. Mahan Construction Company, LLC Top agencies Army (Department of the Army)	$6,026,861	0.2%	Rank history: not on the FY2021 list, #21 in FY2022, #30 in FY2023 and #26 in FY2025; down 8 since FY2023.
39	Arctic Slope Regional Corporation Through Asrc Communications, Ltd. Top agencies USAF (Department of the Air Force)	$5,776,823	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Cgh-Global, LLC Through Cgh-Global Emergency Management Strategies LLC Top agencies USAF (Department of the Air Force)	$5,090,167	0.2%	Rank history: #54 in FY2021, #31 in FY2022, #39 in FY2023 and not on the FY2025 list; down 1 since FY2023.
41	Dak Professional Services, LLC Top agencies DECA (Defense Commissary Agency)	$4,804,920	0.2%	Rank history: #37 in FY2021, #47 in FY2022, #26 in FY2023 and #84 in FY2025; down 15 since FY2023.
42	Mcclellan Business Park LLC Top agencies DHS (Department of Homeland Security)	$4,740,389	0.2%	Rank history: not on the FY2021 list, #26 in FY2022, #40 in FY2023 and #44 in FY2025; down 2 since FY2023.
43	Brevard Achievement Center, Inc. Top agencies DECA (Defense Commissary Agency)	$4,651,226	0.2%	Rank history: #31 in FY2021, #35 in FY2022, #31 in FY2023 and #28 in FY2025; down 12 since FY2023.
44	Dunlap Government Solutions, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$4,612,763	0.2%	Rank history: not on the FY2021 list, #33 in FY2022, #42 in FY2023 and #30 in FY2025; down 2 since FY2023.
45	Hargrove, LLC Top agencies DOS (Department of State) USAGM (US Agency for Global Media)	$4,595,964	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	Sourceamerica Top agencies Treasury (Department of the Treasury)	$4,558,786	0.2%	Rank history: not on the FY2021 list, #30 in FY2022, #62 in FY2023 and #35 in FY2025; up 16 since FY2023.
47	ABT Global LLC Top agencies USAID (US Agency for International Development)	$4,176,153	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
48	Sidem LLC Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) Navy (Department of the Navy)	$4,102,001	0.2%	Rank history: not on the FY2021 list, #58 in FY2022, #45 in FY2023 and not on the FY2025 list; down 3 since FY2023.
49	Aphena Pharma Solutions Holdings, Inc. Through Aphena Pharma Solutions-Tennessee, LLC Top agencies VA (Department of Veterans Affairs)	$4,079,606	0.2%	Rank history: #19 in FY2021, #14 in FY2022, #17 in FY2023 and not on the FY2025 list; down 32 since FY2023.
50	Katmai Global Solutions LLC Top agencies DOS (Department of State)	$4,000,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #34 in FY2025; up 1 since FY2023.
51	Tom & Jerry, Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) Army (Department of the Army)	$3,935,285	0.1%	Rank history: not on the FY2021 list, #36 in FY2022, not on the FY2023 list and #43 in FY2025; up 140 since FY2023.
52	General Electric Company Top agencies Army (Department of the Army)	$3,880,692	0.1%	Rank history: #46 in FY2021, #38 in FY2022, #49 in FY2023 and #33 in FY2025; down 3 since FY2023.
53	Casillas LLC Top agencies DECA (Defense Commissary Agency)	$3,847,266	0.1%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; up 58 since FY2023.
54	Didlake Inc. Top agencies HHS (Department of Health and Human Services) DECA (Defense Commissary Agency) Treasury (Department of the Treasury)	$3,429,244	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; up 75 since FY2023.
55	Goodwill Industries of Central Alabama, Inc. Top agencies DECA (Defense Commissary Agency)	$3,413,892	0.1%	Rank history: #55 in FY2021, #53 in FY2022, #67 in FY2023 and #47 in FY2025; up 12 since FY2023.
56	Government Solutions Group, LLC Top agencies HHS (Department of Health and Human Services)	$3,197,661	0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #63 in FY2025; down 4 since FY2023.
57	The Boeing Company Through Jeppesen Foreflight, Inc. Top agencies Navy (Department of the Navy)	$3,080,947	0.1%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
58	Logistical Customer Service, Inc. Top agencies DECA (Defense Commissary Agency)	$2,954,653	0.1%	Rank history: #75 in FY2021, not on the FY2022–FY2023 lists and #51 in FY2025; up 45 since FY2023.
59	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force)	$2,913,234	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	The Right 2 Work Corporation Top agencies DECA (Defense Commissary Agency)	$2,874,278	0.1%	Rank history: #60 in FY2021, #71 in FY2022, #90 in FY2023 and #49 in FY2025; up 30 since FY2023.
61	Challenge Enterprises of North Florida, Inc. Top agencies DECA (Defense Commissary Agency)	$2,832,569	0.1%	Rank history: #59 in FY2021, not on the FY2022 list, #54 in FY2023 and #83 in FY2025; down 7 since FY2023.
62	Lumbee Tribe Enterprises LLC Top agencies DOS (Department of State)	$2,831,216	0.1%	Rank history: #6 in FY2021, #16 in FY2022, #20 in FY2023 and not on the FY2025 list; down 42 since FY2023.
63	Good Vocations, Inc. Top agencies DECA (Defense Commissary Agency)	$2,786,898	0.1%	Rank history: #82 in FY2021, #84 in FY2022, #59 in FY2023 and #46 in FY2025; down 4 since FY2023.
64	Skylight Inc. Top agencies DHS (Department of Homeland Security)	$2,725,330	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	Spaark Inc Top agencies HUD (Department of Housing and Urban Development)	$2,710,572	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 109 since FY2023.
66	Terrestris, LLC Top agencies DECA (Defense Commissary Agency) Army (Department of the Army)	$2,686,525	0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; up 60 since FY2023.
67	Challenge Unlimited, Inc. Top agencies DECA (Defense Commissary Agency)	$2,680,896	0.1%	Rank history: #65 in FY2021, #73 in FY2022, #68 in FY2023 and #37 in FY2025; up 1 since FY2023.
68	Aspire Therapy Services and Consultants, Inc. Top agencies DECA (Defense Commissary Agency)	$2,634,259	0.1%	Rank history: #43 in FY2021, #75 in FY2022, #43 in FY2023 and #58 in FY2025; down 25 since FY2023.
69	CW Group Inc. Through CW Resources, Inc. Top agencies DECA (Defense Commissary Agency)	$2,610,050	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	P&G Memorials LLC Top agencies VA (Department of Veterans Affairs)	$2,606,641	0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #61 in FY2025; down 22 since FY2023.
71	Claene Group LLC Top agencies Army (Department of the Army)	$2,478,923	0.1%	Rank history: not on the FY2021 list, #52 in FY2022, #61 in FY2023 and #62 in FY2025; down 10 since FY2023.
72	Global Force USA Inc. Top agencies USDA (Department of Agriculture)	$2,456,076	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
73	Cubic Defense Applications Inc. Top agencies USAF (Department of the Air Force)	$2,437,155	0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; new.
74	Isom Events LLC Top agencies SBA (Small Business Administration) HHS (Department of Health and Human Services)	$2,396,342	0.1%	Rank history: not on the FY2021 list, #65 in FY2022, #64 in FY2023 and not on the FY2025 list; down 10 since FY2023.
75	STS Government Solutions, LLC Top agencies USAF (Department of the Air Force)	$2,343,476	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and #79 in FY2025; down 3 since FY2023.
76	Maclovia LLC Top agencies Commerce (Department of Commerce)	$2,293,683	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 185 since FY2023.
77	Two Seventy Group LLC Top agencies DECA (Defense Commissary Agency)	$2,240,791	0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; up 80 since FY2023.
78	Showcall Inc. Top agencies DOS (Department of State)	$2,235,971	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Upslope Advisors Inc. Top agencies NSF (National Science Foundation)	$2,199,710	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
80	Downtown Business Improvement District Corp Top agencies GSA (General Services Administration)	$2,182,077	0.1%	Rank history: #64 in FY2021, #44 in FY2022, #66 in FY2023 and #70 in FY2025; down 14 since FY2023.
81	Cfol International Inc. Top agencies VA (Department of Veterans Affairs)	$2,168,047	0.1%	Rank history: #83 in FY2021, #66 in FY2022, not on the FY2023 list and #55 in FY2025; up 44 since FY2023.
82	RG Talent Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$2,161,465	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; new.
83	Inspire Events LLC Top agencies Commerce (Department of Commerce) DOT (Department of Transportation)	$2,071,949	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2025 list; down 7 since FY2023.
84	Infinity Conference Group, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) DHA (Defense Health Agency)	$2,042,247	0.1%	Rank history: not on the FY2021 list, #81 in FY2022, #69 in FY2023 and not on the FY2025 list; down 15 since FY2023.
85	Macrosys, LLC Top agencies DOT (Department of Transportation)	$2,004,857	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #89 in FY2023 and not on the FY2025 list; up 4 since FY2023.
86	UIC Government Services LLC 2 awardees, including Bowhead Professional and Technical Solutions LLC and Bowhead Manufacturing Technologies, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$2,001,325	0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2025 list; down 23 since FY2023.
87	Inmar Clearing, Inc. Top agencies DECA (Defense Commissary Agency)	$1,993,875	0.1%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2025; new.
88	Mavagi Enterprises, Inc. Top agencies DECA (Defense Commissary Agency)	$1,949,024	0.1%	Rank history: #87 in FY2021, #46 in FY2022, not on the FY2023 list and not on the FY2025 list; up 145 since FY2023.
89	Inventory Auditors International LLC Top agencies DECA (Defense Commissary Agency)	$1,929,588	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and not on the FY2025 list; down 10 since FY2023.
90	Millennium Health & Fitness, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$1,917,776	0.1%	Rank history: #77 in FY2021, #70 in FY2022, #73 in FY2023 and #75 in FY2025; down 17 since FY2023.
91	Great Plains Enterprises Inc. Top agencies DECA (Defense Commissary Agency)	$1,906,410	0.1%	Rank history: #42 in FY2021, #94 in FY2022, #33 in FY2023 and #68 in FY2025; down 58 since FY2023.
92	Advanced LAN Techs Inc. Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$1,858,484	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 193 since FY2023.
93	Goldbelt Apex, LLC Top agencies Army (Department of the Army)	$1,852,795	0.1%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and not on the FY2025 list; down 47 since FY2023.
94	Network Enterprises Inc. Top agencies DECA (Defense Commissary Agency)	$1,813,510	0.1%	Rank history: #86 in FY2021, not on the FY2022–FY2023 lists and #54 in FY2025; returned.
95	Pinter Memorials Inc Top agencies VA (Department of Veterans Affairs)	$1,782,292	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	Black Hills Works Inc. Top agencies DECA (Defense Commissary Agency)	$1,762,804	0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; up 10 since FY2023.
97	Gulf Coast Wilbert Inc. Top agencies VA (Department of Veterans Affairs)	$1,730,275	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, #83 in FY2023 and #92 in FY2025; down 14 since FY2023.
98	Katmai Management Services LLC Top agencies DOS (Department of State)	$1,683,411	0.1%	Rank history: #22 in FY2021, #43 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
99	Coastal Enterprises of Jacksonville Inc. Top agencies DECA (Defense Commissary Agency)	$1,654,619	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #85 in FY2025; down 11 since FY2023.
100	Assets Inc. Top agencies DECA (Defense Commissary Agency)	$1,642,667	0.1%	Rank history: #80 in FY2021, #62 in FY2022, #94 in FY2023 and #87 in FY2025; down 6 since FY2023.

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100 of 1,107 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 5619

Code	Net obligations	Largest contractor
56199 All Other Support Services	$2,316,235,809	Lockheed Martin Corporation
56192 Convention and Trade Show Organizers	$174,382,077	Techtrans International Inc.
56191 Packaging and Labeling Services	$22,967,596	Aphena Pharma Solutions-Tennessee, LLC

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 $2.71 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.

Quick answers

Who were the top 10 NAICS 5619 contractors in FY2024?

1. Lockheed Martin Corporation ($814M), 2. RTX Corporation ($702M), 3. General Dynamics Corporation ($134M), 4. CGI Federal Inc. ($77.2M), 5. Atkins Nuclear Secured Holdings Corporation ($54.2M), 6. Techtrans International Inc. ($37.2M), 7. Trace Inc. ($33.4M), 8. Freeman Decorating Co. ($31M), 9. Chenega Global Protection, LLC ($26M), 10. Arcus Group, LLC ($23.2M).

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