Top 100 Contractors in PSC Z1PZ: Maintenance of Other Non-Building Facilities, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC Z1PZ: Maintenance of Other Non-Building Facilities, 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 74% of PSC Z1PZ contract dollars from July 2025 through June 2026

Contract obligations: $325,478,043 Net of deobligations, by contracts coded PSC Z1PZ
Contractors: 157 Parent companies with an obligation
Largest contractor: Amentum Holdings, Inc. $67.9 million, 19.9% 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	Amentum Holdings, Inc. Through Amentum Technology, Inc. Top agencies Navy (Department of the Navy)	$67,916,132	19.9%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	V2X, Inc. Through V2X Systems LLC Top agencies Navy (Department of the Navy)	$41,588,585	12.2%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Jll-Midnight Sun Ifms LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$34,993,858	10.3%	Rank history: #4 in FY2021, #4 in FY2022, #3 in FY2023, #2 in FY2024 and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
4	J&J and Alms Mission Support Solutions, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$27,624,373	8.1%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #4 in FY2025; unchanged since Jul 2024–Jun 2025.
5	Tbp&Jj Worldwide Services, LLC Top agencies DOT (Department of Transportation)	$21,143,594	6.2%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023, #12 in FY2024 and #7 in FY2025; up 5 since Jul 2024–Jun 2025.
6	GKG Contractors LLC Top agencies Navy (Department of the Navy)	$14,905,192	4.4%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; up 8 since Jul 2024–Jun 2025.
7	Government Contracting Resources, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$13,504,340	4.0%	Rank history: #9 in FY2021, #8 in FY2022, #7 in FY2023, #6 in FY2024 and #8 in FY2025; up 1 since Jul 2024–Jun 2025.
8	Nikken Sogyo Co., Ltd. Top agencies Navy (Department of the Navy)	$13,237,604	3.9%	Rank history: #8 in FY2021, #11 in FY2022, #10 in FY2023, #15 in FY2024 and #9 in FY2025; down 1 since Jul 2024–Jun 2025.
9	Kira Aviation Services LLC Top agencies Navy (Department of the Navy)	$8,882,500	2.6%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #10 in FY2025; up 2 since Jul 2024–Jun 2025.
10	Civil Works Contracting LLC Top agencies Navy (Department of the Navy)	$6,848,006	2.0%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Jul 2024–Jun 2025.
11	The Gilder's Studio, Inc. Top agencies DOI (Department of the Interior)	$5,095,253	1.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
12	Seong Bo Const.ind.co.,Ltd. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$4,021,281	1.2%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; new, not ranked in Jul 2024–Jun 2025.
13	Golder Europe Service Centre SRL Through VGS Aircraft Services, Inc. Top agencies Navy (Department of the Navy)	$4,011,282	1.2%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #19 in FY2025; up 7 since Jul 2024–Jun 2025.
14	Kgjj Engineering Solutions, LLC Top agencies Navy (Department of the Navy)	$3,725,757	1.1%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023, #16 in FY2024 and #15 in FY2025; up 3 since Jul 2024–Jun 2025.
15	Tehama, LLC Top agencies USAF (Department of the Air Force)	$3,508,175	1.0%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #6 in FY2025; down 9 since Jul 2024–Jun 2025.
16	Byrd Enterprises Unlimited Inc. Top agencies VA (Department of Veterans Affairs)	$3,342,184	1.0%	Rank history: not on the FY2021 list, #23 in FY2022, #39 in FY2023, #45 in FY2024 and #16 in FY2025; up 22 since Jul 2024–Jun 2025.
17	CCS King George 2 LLC Top agencies Navy (Department of the Navy)	$2,807,634	0.8%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #21 in FY2025; up 5 since Jul 2024–Jun 2025.
18	Amerifield LLC Top agencies DOT (Department of Transportation)	$2,700,001	0.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
19	ACK Marine & General Contracting LLC Top agencies DOI (Department of the Interior)	$2,077,107	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
20	Glacier Environmental Services Inc. Top agencies Army (Department of the Army)	$2,071,240	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21	Sievert Electric Service and Sales Company Top agencies NASA (National Aeronautics and Space Administration)	$1,857,918	0.5%	Rank history: #10 in FY2021, not on the FY2022–FY2023 lists, #73 in FY2024 and #23 in FY2025; up 59 since Jul 2024–Jun 2025.
22	Barber Klein-Bfa JV LLC Top agencies Navy (Department of the Navy)	$1,745,940	0.5%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and #40 in FY2025; up 22 since Jul 2024–Jun 2025.
23	Dsc-Emi Maintenance Solutions, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,644,247	0.5%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Alutiiq Operations Services, LLC Top agencies Navy (Department of the Navy)	$1,555,055	0.5%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	Roselin Charitar Top agencies Army (Department of the Army)	$1,545,592	0.5%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; down 20 since Jul 2024–Jun 2025.
26	KTH Services JV, LLC Top agencies Navy (Department of the Navy)	$1,416,690	0.4%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 16 since Jul 2024–Jun 2025.
27	Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy)	$1,336,907	0.4%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
28	L3Harris Technologies, Inc. Top agencies Army (Department of the Army)	$1,238,680	0.4%	Rank history: not on the FY2021 list, #36 in FY2022, #35 in FY2023, #40 in FY2024 and #30 in FY2025; up 6 since Jul 2024–Jun 2025.
29	High Performance Solutions L.L.C. Top agencies Navy (Department of the Navy)	$1,224,340	0.4%	Rank history: #19 in FY2021, #35 in FY2022, #50 in FY2023, #47 in FY2024 and #29 in FY2025; up 18 since Jul 2024–Jun 2025.
30	Schindler Elevator Corporation Top agencies Navy (Department of the Navy)	$1,206,954	0.4%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and #26 in FY2025; up 6 since Jul 2024–Jun 2025.
31	NCS / EML SB Joint Venture LLC Top agencies Navy (Department of the Navy)	$1,166,155	0.3%	Rank history: #13 in FY2021, not on the FY2022 list, #11 in FY2023, #14 in FY2024 and #36 in FY2025; up 6 since Jul 2024–Jun 2025.
32	Professionlx Ltd Top agencies DSCA (Defense Security Cooperation Agency)	$1,108,076	0.3%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023, #41 in FY2024 and #39 in FY2025; up 9 since Jul 2024–Jun 2025.
33	Shore Watch Construction Services, LLC Top agencies DHS (Department of Homeland Security)	$1,107,219	0.3%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
34	Chugach Alaska Corporation Through Chugach Consolidated Solutions, LLC Top agencies Navy (Department of the Navy)	$1,059,881	0.3%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35	Claxton / LTS JV, LLC Top agencies Navy (Department of the Navy)	$1,055,301	0.3%	Rank history: not on the FY2021 list, #88 in FY2022, #37 in FY2023, #43 in FY2024 and #34 in FY2025; down 3 since Jul 2024–Jun 2025.
36	Envirosmart Inc. Top agencies Navy (Department of the Navy)	$1,004,794	0.3%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, #48 in FY2024 and #37 in FY2025; down 3 since Jul 2024–Jun 2025.
37	National Maintenance & Repair of Kentucky, Inc. Top agencies Army (Department of the Army)	$896,709	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Bami Technologies LLC Top agencies Army (Department of the Army)	$853,936	0.3%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #28 in FY2025; down 12 since Jul 2024–Jun 2025.
39	The Plumbing Shop, Inc. Top agencies Navy (Department of the Navy)	$834,720	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	Nika Technologies Inc. Top agencies Navy (Department of the Navy)	$794,196	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	CCS King George LLC Top agencies Navy (Department of the Navy)	$746,031	0.2%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023, #55 in FY2024 and #42 in FY2025; up 5 since Jul 2024–Jun 2025.
42	Complete Concrete Inc. Top agencies DOE (Department of Energy)	$653,227	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #59 in FY2024 and #57 in FY2025; up 10 since Jul 2024–Jun 2025.
43	CAS FSE JV II LLC Top agencies DLA (Defense Logistics Agency)	$629,998	0.2%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44	Global Gate LLC Top agencies DLA (Defense Logistics Agency)	$624,540	0.2%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 130 since Jul 2024–Jun 2025.
45	Worrell Contracting Co Inc Top agencies VA (Department of Veterans Affairs)	$616,301	0.2%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023, #70 in FY2024 and #43 in FY2025; up 5 since Jul 2024–Jun 2025.
46	Frontline King George JV LLC Top agencies Navy (Department of the Navy)	$611,705	0.2%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #17 in FY2025; down 27 since Jul 2024–Jun 2025.
47	Matt L. Guinn Construction, LLC Top agencies Army (Department of the Army)	$590,831	0.2%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48	Arrowhead Contracting, Inc. Top agencies Navy (Department of the Navy)	$579,834	0.2%	Rank history: #88 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49	Doyon Management Services, LLC Top agencies DHS (Department of Homeland Security)	$563,417	0.2%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and not on the FY2025 list; up 2 since Jul 2024–Jun 2025.
50	Illinois Marine Towing Inc. Top agencies Army (Department of the Army)	$555,035	0.2%	Rank history: not on the FY2021–FY2025 lists; up 120 since Jul 2024–Jun 2025.
51	Reamian Construction Co.,Ltd Top agencies USAF (Department of the Air Force)	$552,818	0.2%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Steve Beam Construction, Inc. Top agencies DOI (Department of the Interior)	$508,850	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
53	Porr Government Services Italy SRL Top agencies Navy (Department of the Navy)	$498,684	0.1%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	Skookum Educational Programs Top agencies Navy (Department of the Navy)	$496,143	0.1%	Rank history: #51 in FY2021, not on the FY2022–FY2024 lists and #51 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	Everson Construction Group, LLC Top agencies Navy (Department of the Navy)	$438,365	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Dallas Harmony Construction LLC Top agencies USDA (Department of Agriculture)	$427,995	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	Leskca Incorporated Top agencies DOE (Department of Energy)	$427,838	0.1%	Rank history: #28 in FY2021, #27 in FY2022, #18 in FY2023, #58 in FY2024 and #41 in FY2025; down 29 since Jul 2024–Jun 2025.
58	Mitomo Co., Ltd. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$401,409	0.1%	Rank history: not on the FY2021–FY2025 lists; up 87 since Jul 2024–Jun 2025.
59	Sakom Services WI LLC Top agencies USAF (Department of the Air Force)	$377,409	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	Valiant Integrated Services LLC Through Valiant / Alca JV LLC Top agencies Navy (Department of the Navy)	$373,891	0.1%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 77 since Jul 2024–Jun 2025.
61	Lacreek Development Corp Top agencies USAF (Department of the Air Force)	$365,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.
62	Okinawa Sobi Kogyo, K.K. Top agencies Navy (Department of the Navy)	$310,386	0.1%	Rank history: #34 in FY2021, not on the FY2022 list, #26 in FY2023, not on the FY2024 list and #27 in FY2025; down 23 since Jul 2024–Jun 2025.
63	Aleut Field Services, LLC Top agencies Army (Department of the Army)	$292,947	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Event Strategies Inc. Top agencies Army (Department of the Army)	$290,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
65	Benecorp Inc. Top agencies Navy (Department of the Navy)	$278,071	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	Arizona Elevator Solutions LLC Top agencies Army (Department of the Army)	$272,776	0.1%	Rank history: not on the FY2021–FY2023 lists, #80 in FY2024 and #55 in FY2025; down 6 since Jul 2024–Jun 2025.
67	Kwaan Sac JV, LLC Top agencies Navy (Department of the Navy)	$260,820	0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
68	Brown Point Facility Management Solutions, LLC Top agencies DOJ (Department of Justice)	$255,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
69	System 2 / 90, Inc. Top agencies VA (Department of Veterans Affairs)	$250,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	11 Series Energy, Inc. Top agencies Army (Department of the Army)	$235,163	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	CL Construction LLC Top agencies USDA (Department of Agriculture)	$213,342	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	Dongsan Environment Corp. Top agencies Army (Department of the Army)	$210,317	0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
73	Hamilton Pacific Chamberlain LLC Top agencies VA (Department of Veterans Affairs)	$201,728	0.1%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and #69 in FY2025; up 36 since Jul 2024–Jun 2025.
74	JBW Group LLC Top agencies Navy (Department of the Navy)	$199,029	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
75	Professional Environmental Engineers, Inc. Top agencies Army (Department of the Army)	$195,443	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
76	Boomtown Services LLC Top agencies VA (Department of Veterans Affairs)	$191,310	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Atlantic Blueridge Elevator Company Top agencies USAF (Department of the Air Force)	$166,514	<0.1%	Rank history: #72 in FY2021, #82 in FY2022, #75 in FY2023, #92 in FY2024 and #94 in FY2025; up 35 since Jul 2024–Jun 2025.
78	Polk & Associates Construction Inc. Top agencies Army (Department of the Army)	$154,775	<0.1%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; down 48 since Jul 2024–Jun 2025.
79	Hohl Industrial Services Inc. Top agencies Army (Department of the Army)	$152,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	Diamond Project Co., Ltd. Top agencies Navy (Department of the Navy)	$151,487	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 12 since Jul 2024–Jun 2025.
81	Xrt, LLC Top agencies USAF (Department of the Air Force)	$143,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Accurate Marine Environmental, LLC Top agencies Navy (Department of the Navy)	$142,396	<0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023, #79 in FY2024 and #73 in FY2025; down 24 since Jul 2024–Jun 2025.
83	Renba Services LLC Top agencies Army (Department of the Army)	$135,052	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 18 since Jul 2024–Jun 2025.
84	Air FLO Cleaning Systems LLC Top agencies USAF (Department of the Air Force)	$131,515	<0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 4 since Jul 2024–Jun 2025.
85	Caracal Enterprises, LLC Top agencies Army (Department of the Army)	$127,096	<0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, not on the FY2024 list and #80 in FY2025; up 6 since Jul 2024–Jun 2025.
86	LLT Construction, Inc. Top agencies DOI (Department of the Interior)	$107,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Jul 2024–Jun 2025.
87	Arizona State Boiler Inspectors, LLC Top agencies Army (Department of the Army)	$105,696	<0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; new, not ranked in Jul 2024–Jun 2025.
88	Minnesota Elevator Inc. Top agencies Army (Department of the Army)	$100,255	<0.1%	Rank history: #49 in FY2021, #50 in FY2022, #48 in FY2023, #99 in FY2024 and #81 in FY2025; down 7 since Jul 2024–Jun 2025.
89	Murakamiringyo, YK Top agencies Army (Department of the Army)	$98,975	<0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023, not on the FY2024 list and #91 in FY2025; up 15 since Jul 2024–Jun 2025.
90	Nisou Enterprises Inc. Top agencies USAF (Department of the Air Force)	$96,692	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 31 since Jul 2024–Jun 2025.
91	Parks Mowing Service, L.l.c Top agencies Army (Department of the Army)	$95,580	<0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	Bidco Marine Group Inc. Top agencies Army (Department of the Army)	$81,460	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	Carter Machinery Co Inc. Top agencies DLA (Defense Logistics Agency)	$75,691	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Hoisting Solutions LLC Top agencies USAF (Department of the Air Force)	$73,977	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 22 since Jul 2024–Jun 2025.
95	JB Metal Works, LLC Top agencies USDA (Department of Agriculture)	$72,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Jul 2024–Jun 2025.
96	Monte Barbaria - S.R.L. Top agencies OSD (Office of the Secretary of Defense)	$70,300	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	The Blackledge Group, Inc. Top agencies DHS (Department of Homeland Security)	$69,950	<0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
98	Johnson Controls Building Automation Systems, LLC Top agencies DOS (Department of State)	$65,965	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
99	M3T Corporation Top agencies Army (Department of the Army)	$62,756	<0.1%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and not on the FY2025 list; up 58 since Jul 2024–Jun 2025.
100	Johnson Controls Inc Top agencies VA (Department of Veterans Affairs)	$61,420	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 75 since Jul 2024–Jun 2025.

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100 of 157 contractors listed here. See the rest on GovTribe.

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 $341 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. 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 PSC Z1PZ contractors in Jul 2025–Jun 2026?

1. Amentum Holdings, Inc. ($67.9M), 2. V2X, Inc. ($41.6M), 3. Jll-Midnight Sun Ifms LLC ($35M), 4. J&J and Alms Mission Support Solutions, LLC ($27.6M), 5. Tbp&Jj Worldwide Services, LLC ($21.1M), 6. GKG Contractors LLC ($14.9M), 7. Government Contracting Resources, Inc. ($13.5M), 8. Nikken Sogyo Co., Ltd. ($13.2M), 9. Kira Aviation Services LLC ($8.88M), 10. Civil Works Contracting LLC ($6.85M).

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