Top 100 Contractors in PSC Z1JZ: Maintenance of Miscellaneous Buildings, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Amentum Holdings, Inc. 4 awardees, including Amentum Technology, Inc., PAE Government Services, Inc. and Amentum Design and Facility Management Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DOS (Department of State)	$93,975,729	12.5%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; up 2 since Aug 2024–Jul 2025.
2	Afognak Native Corporation 4 awardees, including Alutiiq Information Management, LLC, Alutiiq Solutions, LLC and "Alutiiq Logistics & Maintenance Services, Llc" Top agencies DOS (Department of State) DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$50,768,747	6.8%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #9 in FY2025; up 388 since Aug 2024–Jul 2025.
3	Jones Lang Lasalle Americas, Inc. Top agencies DECA (Defense Commissary Agency)	$39,694,088	5.3%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #5 in FY2025; up 2 since Aug 2024–Jul 2025.
4	Nelson Refrigeration Inc. Top agencies DECA (Defense Commissary Agency)	$36,578,227	4.9%	Rank history: #9 in FY2021, not on the FY2022–FY2023 lists, #3 in FY2024 and #2 in FY2025; down 3 since Aug 2024–Jul 2025.
5	Nana Regional Corporation, Inc. 2 awardees, including Akima Facilities Operations LLC and Arctic Peak LLC Top agencies Army (Department of the Army) DOE (Department of Energy)	$29,331,905	3.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
6	J & J Maintenance Inc. Top agencies DECA (Defense Commissary Agency) Army (Department of the Army)	$27,992,659	3.7%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #3 in FY2025; down 4 since Aug 2024–Jul 2025.
7	Akima Facilities Operations LLC Top agencies Army (Department of the Army) DOE (Department of Energy)	$24,063,302	3.2%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #4 in FY2025; down 3 since Aug 2024–Jul 2025.
8	Action Facilities Management Inc. Top agencies DOJ (Department of Justice)	$22,439,626	3.0%	Rank history: #21 in FY2021, #28 in FY2022, #8 in FY2023, #7 in FY2024 and #10 in FY2025; unchanged since Aug 2024–Jul 2025.
9	M.c. Dean, Inc. 3 awardees, including Dean / Fluor, LLC and U.s. Electrical Testing, LLC Top agencies DISA (Defense Information Systems Agency) DOJ (Department of Justice) Commerce (Department of Commerce)	$17,043,965	2.3%	Rank history: #58 in FY2021, not on the FY2022–FY2024 lists and #8 in FY2025; up 26 since Aug 2024–Jul 2025.
10	R-Con Construction Inc. Top agencies USAF (Department of the Air Force)	$16,957,347	2.3%	Rank history: #51 in FY2021, #7 in FY2022, #28 in FY2023, #9 in FY2024 and #16 in FY2025; up 13 since Aug 2024–Jul 2025.
11	Siemens Corporation 2 awardees, including Siemens Industry Inc. Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$13,319,636	1.8%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Aug 2024–Jul 2025.
12	Bristol Bay Native Corporation 4 awardees, including CCI Utility and Construction Services, LLC, CCI Prime Contractors, LLC and Herman Construction Group, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$12,861,843	1.7%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; down 3 since Aug 2024–Jul 2025.
13	Coho Technology Solutions, LLC Top agencies Navy (Department of the Navy)	$12,501,037	1.7%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	Kekolu Contracting, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$11,544,789	1.5%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; up 149 since Aug 2024–Jul 2025.
15	Nlgc JV LLC Top agencies USAF (Department of the Air Force)	$9,249,596	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
16	CAS FSE JV II LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$9,115,461	1.2%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; up 10 since Aug 2024–Jul 2025.
17	Elektro-Krueck-Gmbh, Elektroinstallationen Top agencies Army (Department of the Army)	$8,597,989	1.1%	Rank history: #13 in FY2021, not on the FY2022–FY2023 lists, #8 in FY2024 and #7 in FY2025; down 10 since Aug 2024–Jul 2025.
18	Kiris, LLC Top agencies Army (Department of the Army)	$8,239,035	1.1%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and #17 in FY2025; up 7 since Aug 2024–Jul 2025.
19	Tuckman-Barbee Construction Co., Inc. Top agencies Navy (Department of the Navy)	$7,948,790	1.1%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #20 in FY2025; up 384 since Aug 2024–Jul 2025.
20	EG Designbuild, L.L.C. Top agencies DOS (Department of State)	$7,743,993	1.0%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #19 in FY2025; up 16 since Aug 2024–Jul 2025.
21	Edifice Services JV, LLC Top agencies Commerce (Department of Commerce)	$7,396,143	1.0%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Aug 2024–Jul 2025.
22	Arctic Slope Regional Corporation 2 awardees, including Asrc Federal Field Services, LLC and Asrc Earthworks, LLC Top agencies USAF (Department of the Air Force)	$7,359,240	1.0%	Rank history: #23 in FY2021, #14 in FY2022, #21 in FY2023, #17 in FY2024 and #13 in FY2025; up 371 since Aug 2024–Jul 2025.
23	Native American Services Corp. Top agencies USAF (Department of the Air Force)	$7,212,435	1.0%	Rank history: #60 in FY2021, #17 in FY2022, #34 in FY2023, #36 in FY2024 and #24 in FY2025; up 9 since Aug 2024–Jul 2025.
24	Al Rawabet Commercial Services & Contracting Co. W.L.L. Top agencies Army (Department of the Army)	$6,922,107	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Cypress-Sbs JV LLC Top agencies Army (Department of the Army)	$6,743,746	0.9%	Rank history: #17 in FY2021, #11 in FY2022, #12 in FY2023, #19 in FY2024 and #21 in FY2025; up 13 since Aug 2024–Jul 2025.
26	Bristol Building Constructors LLC Top agencies DHS (Department of Homeland Security)	$6,188,478	0.8%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Aug 2024–Jul 2025.
27	Lupini Construction, LLC Top agencies Army (Department of the Army)	$6,139,374	0.8%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 13 since Aug 2024–Jul 2025.
28	K2 Contracting Group LLC Top agencies Army (Department of the Army)	$5,528,685	0.7%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	Kcorp-Dean, LLC Top agencies Commerce (Department of Commerce)	$5,390,499	0.7%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #28 in FY2024 and #30 in FY2025; up 173 since Aug 2024–Jul 2025.
30	Interdyne Corp Top agencies Army (Department of the Army)	$5,334,310	0.7%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 12 since Aug 2024–Jul 2025.
31	CCS King George LLC Top agencies Army (Department of the Army)	$4,734,035	0.6%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #31 in FY2024 and #23 in FY2025; down 3 since Aug 2024–Jul 2025.
32	Mill Creek Firelake JV LLC Top agencies USDA (Department of Agriculture)	$4,331,381	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
33	Reasor Building Group LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$3,864,692	0.5%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023, #39 in FY2024 and #36 in FY2025; up 30 since Aug 2024–Jul 2025.
34	Seneca Federal Solutions, LLC Top agencies Army (Department of the Army)	$3,860,049	0.5%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	Capital Brand Group LLC Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$3,750,167	0.5%	Rank history: not on the FY2021 list, #75 in FY2022, #75 in FY2023, #26 in FY2024 and #37 in FY2025; down 8 since Aug 2024–Jul 2025.
36	Olgoonik Corporation 2 awardees, including Olgoonik Enterprises, LLC and Olgoonik Specialty Contractors, LLC Top agencies Commerce (Department of Commerce)	$3,718,822	0.5%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Aug 2024–Jul 2025.
37	Koman Government Solutions LLC Top agencies Navy (Department of the Navy)	$3,647,826	0.5%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Aug 2024–Jul 2025.
38	Veteran Elevated Solutions, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$3,489,674	0.5%	Rank history: not on the FY2021–FY2025 lists; up 312 since Aug 2024–Jul 2025.
39	Burton Construction, Inc. Top agencies USAF (Department of the Air Force)	$3,476,018	0.5%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023 and not on the FY2024–FY2025 lists; up 37 since Aug 2024–Jul 2025.
40	Belt Built Contracting, LLC Top agencies Commerce (Department of Commerce)	$3,411,021	0.5%	Rank history: #46 in FY2021, not on the FY2022–FY2023 lists, #58 in FY2024 and #45 in FY2025; up 147 since Aug 2024–Jul 2025.
41	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Army (Department of the Army)	$3,319,810	0.4%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Aug 2024–Jul 2025.
42	Property & Environmental Management Inc. Top agencies DOS (Department of State)	$3,215,028	0.4%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 28 since Aug 2024–Jul 2025.
43	Re-Engineered Business Solutions, Inc. Top agencies Army (Department of the Army)	$3,184,978	0.4%	Rank history: #40 in FY2021, #48 in FY2022, #57 in FY2023, #55 in FY2024 and #49 in FY2025; up 8 since Aug 2024–Jul 2025.
44	Peak Facility Solutions LLC Top agencies Commerce (Department of Commerce)	$3,095,572	0.4%	Rank history: #63 in FY2021, not on the FY2022 list, #61 in FY2023, #45 in FY2024 and #46 in FY2025; down 3 since Aug 2024–Jul 2025.
45	Satellite Services Inc. Top agencies DISA (Defense Information Systems Agency) Commerce (Department of Commerce)	$3,071,124	0.4%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #76 in FY2025; up 12 since Aug 2024–Jul 2025.
46	Hensel Phelps Construction Co Through Hensel Phelps Services LLC Top agencies Commerce (Department of Commerce)	$3,064,434	0.4%	Rank history: #2 in FY2021, not on the FY2022 list, #43 in FY2023, #53 in FY2024 and #52 in FY2025; up 3 since Aug 2024–Jul 2025.
47	Dawson Mcg, Inc. Top agencies Navy (Department of the Navy)	$2,924,458	0.4%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Aug 2024–Jul 2025.
48	Bristol Design Build Services, LLC Top agencies Army (Department of the Army)	$2,868,649	0.4%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Semper TEK Inc Top agencies Army (Department of the Army)	$2,589,359	0.3%	Rank history: not on the FY2021 list, #21 in FY2022, #83 in FY2023, #80 in FY2024 and #54 in FY2025; up 31 since Aug 2024–Jul 2025.
50	HHI Corporation Top agencies Commerce (Department of Commerce)	$2,572,334	0.3%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #20 in FY2024 and #55 in FY2025; down 32 since Aug 2024–Jul 2025.
51	OER Services LLC Top agencies Army (Department of the Army)	$2,542,534	0.3%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; up 47 since Aug 2024–Jul 2025.
52	S.t.s. - Servizi Tecnologie E Sviluppo S.R.L. Top agencies DECA (Defense Commissary Agency)	$2,535,380	0.3%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; down 6 since Aug 2024–Jul 2025.
53	Sori E&C Co.,Ltd Top agencies Army (Department of the Army)	$2,465,612	0.3%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Aug 2024–Jul 2025.
54	Olympic Enterprises Inc. Top agencies Navy (Department of the Navy)	$2,449,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
55	MDU Resources Group, Inc. Through OEG Inc. Top agencies DOS (Department of State)	$2,378,294	0.3%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	Emcor Group Inc. Through Emcor Government Services, Inc. Top agencies DISA (Defense Information Systems Agency)	$2,373,894	0.3%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023, #61 in FY2024 and not on the FY2025 list; up 78 since Aug 2024–Jul 2025.
57	Gfkk Gesellschaft FÜR Kältetechnik-Klimatechnik MIT Beschränkter Haftung Top agencies DECA (Defense Commissary Agency)	$2,356,836	0.3%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 91 since Aug 2024–Jul 2025.
58	Joyce & Associates Construction, Inc. Top agencies Navy (Department of the Navy)	$2,329,733	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Turner Construction Company Top agencies Army (Department of the Army)	$2,317,508	0.3%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; down 6 since Aug 2024–Jul 2025.
60	PD Power Systems, LLC Top agencies DOS (Department of State)	$2,225,307	0.3%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and not on the FY2025 list; up 83 since Aug 2024–Jul 2025.
61	Reliance Construction Management Company Top agencies Army (Department of the Army)	$2,160,993	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
62	Bluefin, LLC Top agencies HHS (Department of Health and Human Services)	$2,078,837	0.3%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #76 in FY2024 and #78 in FY2025; up 2 since Aug 2024–Jul 2025.
63	Professionals HIR LLC Top agencies Navy (Department of the Navy)	$2,075,011	0.3%	Rank history: #61 in FY2021 and not on the FY2022–FY2025 lists; up 241 since Aug 2024–Jul 2025.
64	Pride Industries Top agencies Army (Department of the Army)	$2,051,447	0.3%	Rank history: not on the FY2021 list, #37 in FY2022, #54 in FY2023, #44 in FY2024 and #50 in FY2025; down 9 since Aug 2024–Jul 2025.
65	EXP U.S. Services Inc. Through EXP Federal Inc. Top agencies DOS (Department of State) Army (Department of the Army)	$2,037,065	0.3%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Structural Engineering Group Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$1,921,517	0.3%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Aug 2024–Jul 2025.
67	Midnight Sun-Centennial Kirratchiaq JV, LLC Top agencies USAF (Department of the Air Force)	$1,912,391	0.3%	Rank history: not on the FY2021 list, #57 in FY2022 and not on the FY2023–FY2025 lists; up 389 since Aug 2024–Jul 2025.
68	JBW Group LLC Top agencies Navy (Department of the Navy)	$1,884,193	0.3%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
69	Puyenpa Construction LLC Top agencies Army (Department of the Army)	$1,855,106	0.2%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 14 since Aug 2024–Jul 2025.
70	Defender Contracting & Construction LLC Top agencies USAF (Department of the Air Force) DECA (Defense Commissary Agency)	$1,851,503	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Brown Point Facility Management Solutions, LLC Top agencies USDA (Department of Agriculture) DOJ (Department of Justice) DHS (Department of Homeland Security)	$1,782,033	0.2%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 53 since Aug 2024–Jul 2025.
72	Oregon State University Top agencies Commerce (Department of Commerce)	$1,729,868	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 57 since Aug 2024–Jul 2025.
73	Government Contracting Resources, Inc. 2 awardees, including Gcr-Dean LLC Top agencies Commerce (Department of Commerce) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,697,987	0.2%	Rank history: #48 in FY2021, #46 in FY2022, #44 in FY2023, not on the FY2024 list and #61 in FY2025; up 158 since Aug 2024–Jul 2025.
74	American Engineering Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,689,341	0.2%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #59 in FY2025; down 13 since Aug 2024–Jul 2025.
75	T E Davis Construction Co Top agencies Navy (Department of the Navy)	$1,686,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
76	Sustainable Group / Terraphase Engineering JV LLC Top agencies DHS (Department of Homeland Security)	$1,605,181	0.2%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Aug 2024–Jul 2025.
77	Nve, Inc. Top agencies DOS (Department of State)	$1,602,755	0.2%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Aug 2024–Jul 2025.
78	Nippo Corporation Top agencies Army (Department of the Army)	$1,548,730	0.2%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Aug 2024–Jul 2025.
79	Dawson Enterprises, Inc. Top agencies GSA (General Services Administration) Navy (Department of the Navy)	$1,520,411	0.2%	Rank history: not on the FY2021 list, #27 in FY2022, #68 in FY2023, #51 in FY2024 and #79 in FY2025; down 8 since Aug 2024–Jul 2025.
80	Dongkuk Structures & Construction Company Limited Top agencies Army (Department of the Army)	$1,431,013	0.2%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #57 in FY2025; down 49 since Aug 2024–Jul 2025.
81	D&D Construction Services JV, LLC Top agencies Commerce (Department of Commerce)	$1,418,221	0.2%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; new, not ranked in Aug 2024–Jul 2025.
82	Smnc Solutions, LLC Top agencies Commerce (Department of Commerce)	$1,407,679	0.2%	Rank history: not on the FY2021–FY2025 lists; up 83 since Aug 2024–Jul 2025.
83	Aed, Inc. Through AED Stratecon, LLC Top agencies DOS (Department of State)	$1,358,238	0.2%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023, #5 in FY2024 and #74 in FY2025; down 77 since Aug 2024–Jul 2025.
84	Skyventure LLC Top agencies Army (Department of the Army)	$1,341,249	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
85	Teya Frawner JV LLC Top agencies USAF (Department of the Air Force)	$1,324,800	0.2%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023, #96 in FY2024 and not on the FY2025 list; up 119 since Aug 2024–Jul 2025.
86	ASJ Construction, A Texas Limited Liability Company Top agencies USAF (Department of the Air Force)	$1,299,994	0.2%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 54 since Aug 2024–Jul 2025.
87	Omega Belt Built Construction Services JV, LLC Top agencies DHS (Department of Homeland Security)	$1,299,804	0.2%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Aug 2024–Jul 2025.
88	GMB Inc. Top agencies Navy (Department of the Navy)	$1,293,641	0.2%	Rank history: #65 in FY2021, #64 in FY2022, #53 in FY2023, #59 in FY2024 and #63 in FY2025; down 29 since Aug 2024–Jul 2025.
89	K.c. Electrical Construction, Inc. Top agencies USAF (Department of the Air Force)	$1,249,447	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	AFG Group Inc. Top agencies Commerce (Department of Commerce)	$1,211,142	0.2%	Rank history: not on the FY2021 list, #93 in FY2022, not on the FY2023–FY2024 lists and #86 in FY2025; new, not ranked in Aug 2024–Jul 2025.
91	Amerifield LLC Top agencies Commerce (Department of Commerce)	$1,159,198	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
92	CAS FSE JV LLC Top agencies Army (Department of the Army)	$1,158,469	0.2%	Rank history: #62 in FY2021, #72 in FY2022, #63 in FY2023, #70 in FY2024 and #71 in FY2025; down 24 since Aug 2024–Jul 2025.
93	Dgi-Ati II LLC Top agencies DOS (Department of State)	$1,157,753	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Native Sons, Ltd. Top agencies Commerce (Department of Commerce)	$1,106,365	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Aug 2024–Jul 2025.
95	Mirador Enterprises, Inc. Top agencies USAF (Department of the Air Force)	$1,039,699	0.1%	Rank history: #26 in FY2021, #44 in FY2022, #31 in FY2023, #40 in FY2024 and #25 in FY2025; down 74 since Aug 2024–Jul 2025.
96	Royal Arc Welding Company, LLC Top agencies Army (Department of the Army)	$981,032	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; down 14 since Aug 2024–Jul 2025.
97	Mesa Verde Enterprises Inc. Top agencies USAF (Department of the Air Force)	$980,149	0.1%	Rank history: #27 in FY2021, #29 in FY2022, not on the FY2023 list, #67 in FY2024 and #60 in FY2025; down 37 since Aug 2024–Jul 2025.
98	Innovative Consulting & Management Services, LLC Top agencies Commerce (Department of Commerce)	$965,807	0.1%	Rank history: not on the FY2021–FY2025 lists; up 27 since Aug 2024–Jul 2025.
99	TK Elevator Corporation Top agencies Navy (Department of the Navy)	$963,800	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Phosters (FM) Limited Top agencies DECA (Defense Commissary Agency)	$961,359	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

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 $749 million 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