Top 100 Contractors in NAICS 56199: All Other Support Services, Aug 2025–Jul 2026

Name: Top 100 Contractors in NAICS 56199: All Other Support Services, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in NAICS 56199: All Other Support Services, FY2025.

The top 10 won 74% of NAICS 56199 contract dollars from August 2025 through July 2026

Contract obligations: $1,098,776,779 Net of deobligations, by contracts coded NAICS 56199 or a code under it
Contractors: 622 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $813 million, 44.1% of obligations
Data as of: Nov 5, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Lockheed Martin Corporation 3 awardees Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army) USAF (Department of the Air Force)	$812,997,416	44.1%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	V2X, Inc. Through Vertex Modernization and Sustainment LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$236,874,523	12.9%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
3	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. Top agencies Army (Department of the Army)	$78,793,435	4.3%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; unchanged since Aug 2024–Jul 2025.
4	Atkins Nuclear Secured Holdings Corporation Through Isotek Systems, LLC Top agencies DOE (Department of Energy)	$57,514,681	3.1%	Rank history: #4 in FY2021, #4 in FY2022, #6 in FY2023, #5 in FY2024 and #4 in FY2025; up 2 since Aug 2024–Jul 2025.
5	The Chenega Corporation 4 awardees, including Chenega Global Protection, LLC, Chenega Security California Corporation and Chenega Base & Logistics Services LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$36,949,970	2.0%	Rank history: not on the FY2021 list, #12 in FY2022, #8 in FY2023, #23 in FY2024 and #5 in FY2025; up 331 since Aug 2024–Jul 2025.
6	Trace Inc. Top agencies DECA (Defense Commissary Agency)	$34,473,041	1.9%	Rank history: #12 in FY2021, #9 in FY2022, #9 in FY2023, #6 in FY2024 and #7 in FY2025; up 1 since Aug 2024–Jul 2025.
7	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) DOE (Department of Energy)	$27,333,067	1.5%	Rank history: #10 in FY2021, #3 in FY2022, #5 in FY2023, #10 in FY2024 and #9 in FY2025; up 3 since Aug 2024–Jul 2025.
8	Sierra Nevada Company, LLC Top agencies USAF (Department of the Air Force)	$26,630,840	1.4%	Rank history: not on the FY2021 list, #6 in FY2022, #7 in FY2023, #9 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
9	CGI Federal Inc. Top agencies DOS (Department of State)	$24,938,968	1.4%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #6 in FY2025; down 5 since Aug 2024–Jul 2025.
10	Lamain Industries LLC Top agencies DECA (Defense Commissary Agency)	$18,395,784	1.0%	Rank history: #22 in FY2021, #23 in FY2022, #12 in FY2023, #11 in FY2024 and #11 in FY2025; up 2 since Aug 2024–Jul 2025.
11	CW Resources, Inc. Top agencies DECA (Defense Commissary Agency)	$16,307,309	0.9%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #12 in FY2025; up 2 since Aug 2024–Jul 2025.
12	Ponderful, LLC Top agencies DECA (Defense Commissary Agency)	$11,151,068	0.6%	Rank history: not on the FY2021 list, #63 in FY2022, #48 in FY2023, #31 in FY2024 and #16 in FY2025; up 13 since Aug 2024–Jul 2025.
13	Koniag, Inc. Through Pacarctic, LLC Top agencies DOJ (Department of Justice)	$10,554,654	0.6%	Rank history: #24 in FY2021, #34 in FY2022, #14 in FY2023, not on the FY2024 list and #18 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	Communication Methods, LLC Top agencies DECA (Defense Commissary Agency)	$10,281,443	0.6%	Rank history: #28 in FY2021, #14 in FY2022, #20 in FY2023, #18 in FY2024 and #14 in FY2025; up 3 since Aug 2024–Jul 2025.
15	Arcus Group, LLC Top agencies DHS (Department of Homeland Security)	$10,202,949	0.6%	Rank history: #37 in FY2021, #40 in FY2022, #15 in FY2023, #8 in FY2024 and #8 in FY2025; down 7 since Aug 2024–Jul 2025.
16	Pride Industries Top agencies DECA (Defense Commissary Agency)	$9,180,975	0.5%	Rank history: #14 in FY2021, #15 in FY2022, #10 in FY2023, #16 in FY2024 and #13 in FY2025; down 2 since Aug 2024–Jul 2025.
17	Terrestris, LLC Top agencies DECA (Defense Commissary Agency) Army (Department of the Army) Navy (Department of the Navy)	$8,878,541	0.5%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #42 in FY2025; up 37 since Aug 2024–Jul 2025.
18	L L Brooks Enterprises Inc. Top agencies DECA (Defense Commissary Agency)	$8,223,445	0.4%	Rank history: #34 in FY2021, #47 in FY2022, #23 in FY2023, #25 in FY2024 and #19 in FY2025; up 3 since Aug 2024–Jul 2025.
19	Servtech Top agencies DECA (Defense Commissary Agency)	$8,145,818	0.4%	Rank history: #56 in FY2021, #35 in FY2022, #36 in FY2023, #24 in FY2024 and #15 in FY2025; down 1 since Aug 2024–Jul 2025.
20	Casillas LLC Top agencies DECA (Defense Commissary Agency)	$7,454,469	0.4%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023, #42 in FY2024 and #26 in FY2025; up 20 since Aug 2024–Jul 2025.
21	Advanced Integrated Technologies, LLC Top agencies Navy (Department of the Navy)	$7,374,073	0.4%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Aug 2024–Jul 2025.
22	W. Harris, Government Services Contractor, Inc. Top agencies DECA (Defense Commissary Agency)	$6,958,746	0.4%	Rank history: #49 in FY2021, #19 in FY2022, #28 in FY2023, #30 in FY2024 and #20 in FY2025; unchanged since Aug 2024–Jul 2025.
23	Teya Diversified Services LLC Top agencies HHS (Department of Health and Human Services)	$6,702,764	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
24	Dunlap Government Solutions, LLC Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) DHA (Defense Health Agency)	$6,101,369	0.3%	Rank history: not on the FY2021 list, #29 in FY2022, #35 in FY2023, #38 in FY2024 and #25 in FY2025; up 6 since Aug 2024–Jul 2025.
25	Alares LLC Top agencies VA (Department of Veterans Affairs)	$5,611,117	0.3%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #21 in FY2025; down 2 since Aug 2024–Jul 2025.
26	Barricade International LLC Top agencies DHS (Department of Homeland Security)	$5,505,248	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
27	Cgh-Global Emergency Management Strategies LLC Top agencies USAF (Department of the Air Force)	$5,333,817	0.3%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; up 5 since Aug 2024–Jul 2025.
28	Plurax LLC Top agencies DECA (Defense Commissary Agency)	$4,841,938	0.3%	Rank history: not on the FY2021 list, #99 in FY2022, #98 in FY2023, #93 in FY2024 and #69 in FY2025; up 72 since Aug 2024–Jul 2025.
29	Mcclellan Business Park LLC Top agencies DHS (Department of Homeland Security)	$4,700,768	0.3%	Rank history: not on the FY2021 list, #22 in FY2022, #34 in FY2023, #36 in FY2024 and #34 in FY2025; up 9 since Aug 2024–Jul 2025.
30	General Electric Company 2 awardees Top agencies Army (Department of the Army)	$4,543,602	0.2%	Rank history: #39 in FY2021, #33 in FY2022, #42 in FY2023, #41 in FY2024 and #28 in FY2025; up 13 since Aug 2024–Jul 2025.
31	Consolidated Support Services, Inc. Top agencies DECA (Defense Commissary Agency)	$4,453,701	0.2%	Rank history: #41 in FY2021, #76 in FY2022, #63 in FY2023, #88 in FY2024 and #45 in FY2025; up 14 since Aug 2024–Jul 2025.
32	Sourceamerica Top agencies Treasury (Department of the Treasury)	$4,299,792	0.2%	Rank history: not on the FY2021 list, #26 in FY2022, #51 in FY2023, #39 in FY2024 and #29 in FY2025; down 1 since Aug 2024–Jul 2025.
33	Brevard Achievement Center, Inc. Top agencies DECA (Defense Commissary Agency)	$4,185,885	0.2%	Rank history: #25 in FY2021, #31 in FY2022, #27 in FY2023, #37 in FY2024 and #23 in FY2025; down 6 since Aug 2024–Jul 2025.
34	Goodwill Industries of Central Alabama, Inc. Top agencies DECA (Defense Commissary Agency)	$4,098,434	0.2%	Rank history: #44 in FY2021, #44 in FY2022, #54 in FY2023, #44 in FY2024 and #36 in FY2025; up 14 since Aug 2024–Jul 2025.
35	Challenge Unlimited, Inc. Top agencies DECA (Defense Commissary Agency)	$3,999,090	0.2%	Rank history: #53 in FY2021, #60 in FY2022, #55 in FY2023, #55 in FY2024 and #31 in FY2025; up 2 since Aug 2024–Jul 2025.
36	Job Options, Incorporated Top agencies DECA (Defense Commissary Agency)	$3,680,443	0.2%	Rank history: #17 in FY2021, #17 in FY2022, #13 in FY2023, #21 in FY2024 and #17 in FY2025; down 17 since Aug 2024–Jul 2025.
37	Industries for the Blind and Visually Impaired, Inc. Top agencies Navy (Department of the Navy)	$3,542,838	0.2%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #17 in FY2024 and #33 in FY2025; down 4 since Aug 2024–Jul 2025.
38	Galapagos Federal Systems LLC Top agencies USAF (Department of the Air Force)	$3,512,279	0.2%	Rank history: #42 in FY2021, #42 in FY2022, #30 in FY2023, #22 in FY2024 and #27 in FY2025; down 3 since Aug 2024–Jul 2025.
39	The Boeing Company Through Jeppesen Foreflight, Inc. Top agencies Navy (Department of the Navy)	$3,453,022	0.2%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #41 in FY2025; up 7 since Aug 2024–Jul 2025.
40	The Right 2 Work Corporation Top agencies DECA (Defense Commissary Agency)	$3,239,433	0.2%	Rank history: #48 in FY2021, #58 in FY2022, #71 in FY2023, #48 in FY2024 and #38 in FY2025; up 7 since Aug 2024–Jul 2025.
41	Aspire Therapy Services and Consultants, Inc. Top agencies DECA (Defense Commissary Agency)	$3,191,631	0.2%	Rank history: #36 in FY2021, #62 in FY2022, #37 in FY2023, #57 in FY2024 and #46 in FY2025; up 10 since Aug 2024–Jul 2025.
42	Pinter Memorials Inc. Top agencies VA (Department of Veterans Affairs)	$3,171,834	0.2%	Rank history: not on the FY2021 list, #79 in FY2022, #68 in FY2023, not on the FY2024 list and #65 in FY2025; up 31 since Aug 2024–Jul 2025.
43	Dependable on-Site Scan & Shred Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) SSA (Social Security Administration)	$3,129,472	0.2%	Rank history: #75 in FY2021, #56 in FY2022, #47 in FY2023, #56 in FY2024 and #52 in FY2025; up 19 since Aug 2024–Jul 2025.
44	Vanjoh Graphics, L.L.C. Top agencies Army (Department of the Army)	$3,004,673	0.2%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #73 in FY2025; up 11 since Aug 2024–Jul 2025.
45	Guidehouse Inc. Top agencies DOT (Department of Transportation)	$2,994,331	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
46	Cook Inlet Region Inc. Through OSC Edgetech, LLC Top agencies DHS (Department of Homeland Security)	$2,885,970	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
47	Network Enterprises Inc. Top agencies DECA (Defense Commissary Agency)	$2,799,599	0.2%	Rank history: #73 in FY2021, not on the FY2022–FY2023 lists, #75 in FY2024 and #43 in FY2025; up 3 since Aug 2024–Jul 2025.
48	R&R Commissary Services, Incorporated Top agencies DECA (Defense Commissary Agency)	$2,758,035	0.1%	Rank history: #32 in FY2021, #28 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
49	Great Plains Enterprises Inc. Top agencies DECA (Defense Commissary Agency)	$2,742,604	0.1%	Rank history: #35 in FY2021, #78 in FY2022, #29 in FY2023, #73 in FY2024 and #54 in FY2025; up 20 since Aug 2024–Jul 2025.
50	D7, LLC Top agencies DOJ (Department of Justice)	$2,730,254	0.1%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #76 in FY2025; up 258 since Aug 2024–Jul 2025.
51	Two Seventy Group LLC Top agencies DECA (Defense Commissary Agency)	$2,677,361	0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #57 in FY2025; up 19 since Aug 2024–Jul 2025.
52	Macrosys, LLC Top agencies DOT (Department of Transportation)	$2,676,798	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #70 in FY2023, #68 in FY2024 and #96 in FY2025; up 46 since Aug 2024–Jul 2025.
53	Harp Services LLC Top agencies VA (Department of Veterans Affairs)	$2,651,429	0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 27 since Aug 2024–Jul 2025.
54	Servicesource Inc. Top agencies VA (Department of Veterans Affairs) NARA (National Archives and Records Administration)	$2,635,992	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 20 since Aug 2024–Jul 2025.
55	Claene Group LLC Top agencies Army (Department of the Army)	$2,623,510	0.1%	Rank history: not on the FY2021 list, #43 in FY2022, #50 in FY2023, #60 in FY2024 and #49 in FY2025; up 3 since Aug 2024–Jul 2025.
56	Checkmate Global, LLC Top agencies DHS (Department of Homeland Security)	$2,340,818	0.1%	Rank history: #13 in FY2021, not on the FY2022 list, #79 in FY2023, #12 in FY2024 and #53 in FY2025; down 28 since Aug 2024–Jul 2025.
57	Nysarc, Inc. Top agencies Army (Department of the Army)	$2,306,900	0.1%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #61 in FY2025; up 15 since Aug 2024–Jul 2025.
58	Logistical Customer Service, Inc. Top agencies DECA (Defense Commissary Agency)	$2,257,494	0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #82 in FY2023, #46 in FY2024 and #40 in FY2025; down 14 since Aug 2024–Jul 2025.
59	Didlake Inc. Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury)	$2,189,794	0.1%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #39 in FY2025; down 17 since Aug 2024–Jul 2025.
60	Goldbelt, Incorporated 2 awardees, including Goldbelt Apex, LLC and Goldbelt Global LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$2,150,295	0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Aug 2024–Jul 2025.
61	W. & O. Supply, Inc. 2 awardees, including The Hiller Companies LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DOI (Department of the Interior)	$2,071,894	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
62	Black Hills Works Inc. Top agencies DECA (Defense Commissary Agency)	$1,936,056	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #77 in FY2024 and #71 in FY2025; up 13 since Aug 2024–Jul 2025.
63	C.j. Mahan Construction Company, LLC Top agencies Army (Department of the Army)	$1,900,000	0.1%	Rank history: not on the FY2021 list, #18 in FY2022, #26 in FY2023, #32 in FY2024 and #22 in FY2025; down 34 since Aug 2024–Jul 2025.
64	Assets Inc. Top agencies DECA (Defense Commissary Agency)	$1,886,868	0.1%	Rank history: #68 in FY2021, #51 in FY2022, #75 in FY2023, #80 in FY2024 and #70 in FY2025; up 12 since Aug 2024–Jul 2025.
65	Beacon Top agencies DECA (Defense Commissary Agency)	$1,819,932	0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #88 in FY2023, not on the FY2024 list and #74 in FY2025; up 44 since Aug 2024–Jul 2025.
66	Goodwill Easter Seals Miami Valley Top agencies DECA (Defense Commissary Agency)	$1,802,150	0.1%	Rank history: #80 in FY2021, #68 in FY2022, not on the FY2023 list, #83 in FY2024 and #62 in FY2025; up 5 since Aug 2024–Jul 2025.
67	P&G Memorials LLC Top agencies VA (Department of Veterans Affairs)	$1,792,370	0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023, #59 in FY2024 and #48 in FY2025; down 11 since Aug 2024–Jul 2025.
68	Bristol Bay Native Corporation Through STS Government Solutions, LLC Top agencies USAF (Department of the Air Force)	$1,773,934	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
69	Greenlight Consulting Services, LLC Top agencies DTRA (Defense Threat Reduction Agency)	$1,735,450	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
70	Hargrove, LLC Top agencies Treasury (Department of the Treasury) DOT (Department of Transportation)	$1,706,192	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force)	$1,649,094	0.1%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
72	Coastal Enterprises of Jacksonville Inc. Top agencies DECA (Defense Commissary Agency)	$1,568,908	0.1%	Rank history: #94 in FY2021, not on the FY2022 list, #69 in FY2023, #79 in FY2024 and #68 in FY2025; up 5 since Aug 2024–Jul 2025.
73	Retail Services Wis Corporation Top agencies DECA (Defense Commissary Agency)	$1,526,040	0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 12 since Aug 2024–Jul 2025.
74	New Leaf, Inc. Top agencies DECA (Defense Commissary Agency)	$1,466,524	0.1%	Rank history: #60 in FY2021, #85 in FY2022, #90 in FY2023, not on the FY2024 list and #94 in FY2025; up 23 since Aug 2024–Jul 2025.
75	Gulf Coast Wilbert Inc. Top agencies VA (Department of Veterans Affairs)	$1,408,742	0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #64 in FY2023, #78 in FY2024 and #75 in FY2025; up 3 since Aug 2024–Jul 2025.
76	Southwest Business Improvement District Top agencies GSA (General Services Administration)	$1,393,679	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #77 in FY2023, #87 in FY2024 and #78 in FY2025; up 6 since Aug 2024–Jul 2025.
77	Global Force USA Inc. Top agencies USDA (Department of Agriculture)	$1,326,320	0.1%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #47 in FY2025; down 36 since Aug 2024–Jul 2025.
78	The Timken Company Through CGI Federal Inc. Top agencies DOS (Department of State)	$1,325,107	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
79	Keybridge Technologies, LLC Top agencies DOT (Department of Transportation)	$1,281,134	0.1%	Rank history: not on the FY2021–FY2023 lists, #89 in FY2024 and #82 in FY2025; up 5 since Aug 2024–Jul 2025.
80	Griffin Resources LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) DCSA (Defense Counterintelligence and Security Agency)	$1,168,631	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 10 since Aug 2024–Jul 2025.
81	Eagle Star Industries LLC Top agencies DECA (Defense Commissary Agency)	$1,125,926	0.1%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; down 21 since Aug 2024–Jul 2025.
82	City of Altus Top agencies USAF (Department of the Air Force)	$1,091,164	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
83	Downtown Business Improvement District Corp Top agencies GSA (General Services Administration)	$1,090,404	0.1%	Rank history: #52 in FY2021, #36 in FY2022, #53 in FY2023, #65 in FY2024 and #56 in FY2025; down 20 since Aug 2024–Jul 2025.
84	County Services Inc. Top agencies USDA (Department of Agriculture)	$1,088,080	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, #91 in FY2024 and #85 in FY2025; up 2 since Aug 2024–Jul 2025.
85	Echelon Services, LLC Top agencies DCSA (Defense Counterintelligence and Security Agency)	$1,082,372	0.1%	Rank history: not on the FY2021 list, #32 in FY2022, #21 in FY2023, #29 in FY2024 and #24 in FY2025; down 61 since Aug 2024–Jul 2025.
86	Stericycle Inc 4 awardees Top agencies SSA (Social Security Administration) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$1,080,308	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 20 since Aug 2024–Jul 2025.
87	Millennium Health & Fitness, Inc. Top agencies MDA (DOD Missile Defense Agency) DHRA (Defense Human Resources Activity) DISA (Defense Information Systems Agency)	$1,069,173	0.1%	Rank history: #65 in FY2021, #57 in FY2022, #57 in FY2023, #72 in FY2024 and #59 in FY2025; down 21 since Aug 2024–Jul 2025.
88	Agas US Inc. Top agencies DLA (Defense Logistics Agency)	$1,063,313	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; up 31 since Aug 2024–Jul 2025.
89	Perkins & Associates LLC Top agencies DECA (Defense Commissary Agency)	$1,039,823	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, #99 in FY2024 and #81 in FY2025; down 8 since Aug 2024–Jul 2025.
90	Leading Solutions, LLC Top agencies DHS (Department of Homeland Security)	$1,025,693	0.1%	Rank history: not on the FY2021–FY2025 lists; up 26 since Aug 2024–Jul 2025.
91	Dak Professional Services, LLC Top agencies DECA (Defense Commissary Agency)	$1,021,840	0.1%	Rank history: #30 in FY2021, #39 in FY2022, #22 in FY2023, #35 in FY2024 and #67 in FY2025; down 30 since Aug 2024–Jul 2025.
92	Alexton Incorporated Top agencies DOE (Department of Energy)	$1,020,100	0.1%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #97 in FY2025; up 7 since Aug 2024–Jul 2025.
93	Good Vocations, Inc. Top agencies DECA (Defense Commissary Agency)	$1,018,068	0.1%	Rank history: #70 in FY2021, #69 in FY2022, #49 in FY2023, #51 in FY2024 and #35 in FY2025; down 57 since Aug 2024–Jul 2025.
94	Spaark Inc Top agencies HUD (Department of Housing and Urban Development)	$1,012,591	0.1%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #92 in FY2025; down 37 since Aug 2024–Jul 2025.
95	Chermat Holdings LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$977,976	0.1%	Rank history: not on the FY2021–FY2025 lists; up 17 since Aug 2024–Jul 2025.
96	Work Services Corporation Top agencies DECA (Defense Commissary Agency) DHA (Defense Health Agency) USAF (Department of the Air Force)	$974,553	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2024–FY2025 lists; up 32 since Aug 2024–Jul 2025.
97	Truss Crane Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DHS (Department of Homeland Security)	$944,086	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; down 4 since Aug 2024–Jul 2025.
98	Ceiba Adventures Inc Top agencies DOI (Department of the Interior)	$930,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 34 since Aug 2024–Jul 2025.
99	Goodwill Industries International, Inc. Through Goodwill Industries of Southern California Top agencies DECA (Defense Commissary Agency)	$885,467	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 9 since Aug 2024–Jul 2025.
100	Fairbanks Resource Agency, Inc. Top agencies DECA (Defense Commissary Agency)	$879,186	<0.1%	Rank history: #77 in FY2021, not on the FY2022 list, #93 in FY2023, not on the FY2024 list and #100 in FY2025; up 5 since Aug 2024–Jul 2025.

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100 of 622 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 56199

Code	Net obligations	Largest contractor
561990 All Other Support Services	$1,098,776,779	Lockheed Martin 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 $1.84 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 Aug 2024–Jul 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 56199 contractors in Aug 2025–Jul 2026?

1. Lockheed Martin Corporation ($813M), 2. V2X, Inc. ($237M), 3. General Dynamics Corporation ($78.8M), 4. Atkins Nuclear Secured Holdings Corporation ($57.5M), 5. The Chenega Corporation ($36.9M), 6. Trace Inc. ($34.5M), 7. Booz Allen Hamilton Holding Corporation ($27.3M), 8. Sierra Nevada Company, LLC ($26.6M), 9. CGI Federal Inc. ($24.9M), 10. Lamain Industries LLC ($18.4M).

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