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

Name: Top 100 Contractors in PSC Z1PZ: Maintenance of Other Non-Building Facilities, 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 PSC Z1PZ: Maintenance of Other Non-Building Facilities, FY2025.

The top 10 won 73% of PSC Z1PZ contract dollars from August 2025 through July 2026

Contract obligations: $314,155,742 Net of deobligations, by contracts coded PSC Z1PZ
Contractors: 157 Parent companies with an obligation
Largest contractor: Amentum Holdings, Inc. $63.4 million, 19.3% 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	Amentum Holdings, Inc. Through Amentum Technology, Inc. Top agencies Navy (Department of the Navy)	$63,376,819	19.3%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	V2X, Inc. Through V2X Systems LLC Top agencies Navy (Department of the Navy)	$39,915,371	12.1%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	Jll-Midnight Sun Ifms LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$32,267,704	9.8%	Rank history: #4 in FY2021, #4 in FY2022, #3 in FY2023, #2 in FY2024 and #3 in FY2025; unchanged since Aug 2024–Jul 2025.
4	J&J and Alms Mission Support Solutions, LLC Top agencies Navy (Department of the Navy)	$28,051,241	8.5%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Aug 2024–Jul 2025.
5	Tbp&Jj Worldwide Services, LLC Top agencies DOT (Department of Transportation)	$19,967,815	6.1%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023, #12 in FY2024 and #7 in FY2025; up 5 since Aug 2024–Jul 2025.
6	GKG Contractors LLC Top agencies Navy (Department of the Navy)	$15,110,354	4.6%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; up 10 since Aug 2024–Jul 2025.
7	Nikken Sogyo Co., Ltd. Top agencies Navy (Department of the Navy)	$14,110,472	4.3%	Rank history: #8 in FY2021, #11 in FY2022, #10 in FY2023, #15 in FY2024 and #9 in FY2025; unchanged since Aug 2024–Jul 2025.
8	Government Contracting Resources, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$12,365,693	3.8%	Rank history: #9 in FY2021, #8 in FY2022, #7 in FY2023, #6 in FY2024 and #8 in FY2025; unchanged since Aug 2024–Jul 2025.
9	Reyes Construction, Inc. Top agencies Navy (Department of the Navy)	$7,876,300	2.4%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 84 since Aug 2024–Jul 2025.
10	Kira Aviation Services LLC Top agencies Navy (Department of the Navy)	$6,770,275	2.1%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and not on the FY2025 list; down 1 since Aug 2024–Jul 2025.
11	The Gilder's Studio, Inc. Top agencies DOI (Department of the Interior)	$5,095,253	1.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 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 Aug 2024–Jul 2025.
13	WSP USA Solutions Inc 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 8 since Aug 2024–Jul 2025.
14	Tehama, LLC Top agencies USAF (Department of the Air Force)	$3,619,713	1.1%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #6 in FY2025; down 8 since Aug 2024–Jul 2025.
15	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 24 since Aug 2024–Jul 2025.
16	Kgjj Engineering Solutions, LLC Top agencies Navy (Department of the Navy)	$3,335,227	1.0%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023, #16 in FY2024 and #15 in FY2025; down 2 since Aug 2024–Jul 2025.
17	CCS King George 2 LLC Top agencies Navy (Department of the Navy)	$2,808,211	0.9%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #21 in FY2025; up 6 since Aug 2024–Jul 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 Aug 2024–Jul 2025.
19	ACK Marine & General Contracting LLC Top agencies DOI (Department of the Interior)	$2,392,308	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 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 Aug 2024–Jul 2025.
21	Sievert Electric Service and Sales Company Top agencies NASA (National Aeronautics and Space Administration)	$1,920,819	0.6%	Rank history: #10 in FY2021, not on the FY2022–FY2023 lists, #73 in FY2024 and #23 in FY2025; up 66 since Aug 2024–Jul 2025.
22	Diversified Service Contracting, Inc. Through Dsc-Emi Maintenance Solutions, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,682,827	0.5%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Aug 2024–Jul 2025.
23	Afognak Native Corporation Through Alutiiq Operations Services, LLC Top agencies Navy (Department of the Navy)	$1,555,055	0.5%	Rank history: #2 in FY2021, #2 in FY2022, #57 in FY2023, not on the FY2024 list and #25 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	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 19 since Aug 2024–Jul 2025.
25	Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy)	$1,256,434	0.4%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
26	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 #31 in FY2025; up 10 since Aug 2024–Jul 2025.
27	Mcginnis, Inc. Through National Maintenance & Repair of Kentucky, Inc. Top agencies Army (Department of the Army)	$1,233,368	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
28	Schindler Elevator Corporation Top agencies Navy (Department of the Navy)	$1,191,405	0.4%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and #27 in FY2025; up 9 since Aug 2024–Jul 2025.
29	NCS / EML SB Joint Venture LLC Top agencies Navy (Department of the Navy)	$1,178,504	0.4%	Rank history: #13 in FY2021, not on the FY2022 list, #11 in FY2023, #14 in FY2024 and #36 in FY2025; up 15 since Aug 2024–Jul 2025.
30	Claxton / LTS JV, LLC Top agencies Navy (Department of the Navy)	$1,112,489	0.3%	Rank history: not on the FY2021 list, #88 in FY2022, #37 in FY2023, #43 in FY2024 and #34 in FY2025; down 1 since Aug 2024–Jul 2025.
31	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 #33 in FY2025; new, not ranked in Aug 2024–Jul 2025.
32	KTH Services JV, LLC Top agencies Navy (Department of the Navy)	$1,075,752	0.3%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; unchanged since Aug 2024–Jul 2025.
33	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 Aug 2024–Jul 2025.
34	Envirosmart, LLC 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; up 1 since Aug 2024–Jul 2025.
35	Barber Klein-Bfa JV LLC Top agencies Navy (Department of the Navy)	$885,871	0.3%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and #40 in FY2025; up 8 since Aug 2024–Jul 2025.
36	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 #29 in FY2025; down 8 since Aug 2024–Jul 2025.
37	The Plumbing Shop, Inc. Top agencies Navy (Department of the Navy)	$834,720	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
38	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 Aug 2024–Jul 2025.
39	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 8 since Aug 2024–Jul 2025.
40	Worrell Contracting Co Inc. Top agencies VA (Department of Veterans Affairs)	$694,354	0.2%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023, #70 in FY2024 and #43 in FY2025; up 15 since Aug 2024–Jul 2025.
41	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 #56 in FY2025; up 10 since Aug 2024–Jul 2025.
42	CAS FSE JV II LLC Top agencies DLA (Defense Logistics Agency)	$629,998	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
43	Global Gate LLC Top agencies DLA (Defense Logistics Agency)	$624,540	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 124 since Aug 2024–Jul 2025.
44	High Performance Solutions L.L.C. Top agencies Navy (Department of the Navy)	$624,465	0.2%	Rank history: #19 in FY2021, #35 in FY2022, #50 in FY2023, #47 in FY2024 and #30 in FY2025; down 17 since Aug 2024–Jul 2025.
45	Leskca Incorporated Top agencies DOE (Department of Energy)	$616,933	0.2%	Rank history: #28 in FY2021, #27 in FY2022, #18 in FY2023, #58 in FY2024 and #41 in FY2025; down 14 since Aug 2024–Jul 2025.
46	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 #45 in FY2025; new, not ranked in Aug 2024–Jul 2025.
47	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 Aug 2024–Jul 2025.
48	Illinois Marine Towing Inc. Top agencies Army (Department of the Army)	$568,591	0.2%	Rank history: not on the FY2021–FY2025 lists; up 66 since Aug 2024–Jul 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 1 since Aug 2024–Jul 2025.
50	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 #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
51	FL GCR JV LLC Top agencies Navy (Department of the Navy)	$552,716	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
52	Professional Environmental Engineers, Inc. Top agencies Army (Department of the Army)	$552,664	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
53	Steve Beam Construction, Inc. Top agencies DOI (Department of the Interior)	$508,850	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
54	Skookum Educational Programs Top agencies Navy (Department of the Navy)	$496,143	0.2%	Rank history: #51 in FY2021, not on the FY2022–FY2024 lists and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Atlantic Pacific Standard LLC Top agencies USAF (Department of the Air Force)	$450,934	0.1%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and not on the FY2025 list; down 30 since Aug 2024–Jul 2025.
56	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 Aug 2024–Jul 2025.
57	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 Aug 2024–Jul 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 82 since Aug 2024–Jul 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 Aug 2024–Jul 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 #51 in FY2025; up 70 since Aug 2024–Jul 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 #52 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Aim High Construction LLC Top agencies DOI (Department of the Interior)	$350,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
63	Bethel Construction LLC Top agencies DOI (Department of the Interior)	$340,010	0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	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 #28 in FY2025; down 24 since Aug 2024–Jul 2025.
65	The Aleut Corporation Through Aleut Field Services, LLC Top agencies Army (Department of the Army)	$292,947	0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	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 Aug 2024–Jul 2025.
67	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 Aug 2024–Jul 2025.
68	Bering Straits Native Corporation 2 awardees, including Bering Straits Global Innovations, LLC Top agencies Navy (Department of the Navy)	$274,651	0.1%	Rank history: not on the FY2021 list, #33 in FY2022, #32 in FY2023, #67 in FY2024 and #24 in FY2025; down 20 since Aug 2024–Jul 2025.
69	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 #54 in FY2025; down 10 since Aug 2024–Jul 2025.
70	Dongsan Environment Corp. Top agencies Army (Department of the Army)	$268,755	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Aug 2024–Jul 2025.
71	JBW Group LLC Top agencies Navy (Department of the Navy)	$267,045	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
72	Kwaan Sac JV, LLC Top agencies Navy (Department of the Navy)	$260,820	0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Aug 2024–Jul 2025.
73	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 #57 in FY2025; new, not ranked in Aug 2024–Jul 2025.
74	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 Aug 2024–Jul 2025.
75	11 Series Energy, Inc. Top agencies Army (Department of the Army)	$235,163	0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Aug 2024–Jul 2025.
76	Professionlx Ltd Top agencies DSCA (Defense Security Cooperation Agency)	$225,693	0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023, #41 in FY2024 and #39 in FY2025; down 34 since Aug 2024–Jul 2025.
77	CL Construction LLC Top agencies USDA (Department of Agriculture)	$213,342	0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Aug 2024–Jul 2025.
78	Yuil Eng. & Const. Co.,Ltd Top agencies Army (Department of the Army)	$192,647	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
79	Boomtown Services LLC Top agencies VA (Department of Veterans Affairs)	$191,310	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
80	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 #93 in FY2025; up 22 since Aug 2024–Jul 2025.
81	Parks Mowing Service, L.l.c Top agencies Army (Department of the Army)	$166,172	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Aug 2024–Jul 2025.
82	Minnesota Elevator Inc. Top agencies Army (Department of the Army)	$161,230	<0.1%	Rank history: #49 in FY2021, #50 in FY2022, #48 in FY2023, #99 in FY2024 and #80 in FY2025; down 5 since Aug 2024–Jul 2025.
83	Xrt, LLC Top agencies USAF (Department of the Air Force)	$160,925	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Frontline King George JV LLC Top agencies Navy (Department of the Navy)	$157,166	<0.1%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #17 in FY2025; down 65 since Aug 2024–Jul 2025.
85	Polk & Associates Construction Inc. Top agencies Army (Department of the Army)	$154,775	<0.1%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; down 52 since Aug 2024–Jul 2025.
86	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 Aug 2024–Jul 2025.
87	Diamond Project Co., Ltd. Top agencies Navy (Department of the Navy)	$151,487	<0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; down 2 since Aug 2024–Jul 2025.
88	Youngjin Construction Inc. Top agencies Army (Department of the Army)	$143,788	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	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 #72 in FY2025; down 32 since Aug 2024–Jul 2025.
90	Renba Services LLC Top agencies Army (Department of the Army)	$135,052	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 4 since Aug 2024–Jul 2025.
91	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 #76 in FY2025; down 10 since Aug 2024–Jul 2025.
92	Hamilton Pacific Chamberlain LLC Top agencies VA (Department of Veterans Affairs)	$127,350	<0.1%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and #68 in FY2025; down 17 since Aug 2024–Jul 2025.
93	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 #79 in FY2025; down 9 since Aug 2024–Jul 2025.
94	LLT Construction, Inc. Top agencies DOI (Department of the Interior)	$107,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
95	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 #92 in FY2025; new, not ranked in Aug 2024–Jul 2025.
96	Mass Tank Inspection Services LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$99,147	<0.1%	Rank history: not on the FY2021 list, #66 in FY2022, not on the FY2023–FY2024 lists and #69 in FY2025; down 16 since Aug 2024–Jul 2025.
97	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 #90 in FY2025; unchanged since Aug 2024–Jul 2025.
98	Nisou Enterprises Inc. Top agencies USAF (Department of the Air Force)	$96,692	<0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; up 15 since Aug 2024–Jul 2025.
99	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 Aug 2024–Jul 2025.
100	Carter Machinery Company, Incorporated Top agencies DLA (Defense Logistics Agency)	$75,691	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 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 $329 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

Who were the top 10 PSC Z1PZ contractors in Aug 2025–Jul 2026?

1. Amentum Holdings, Inc. ($63.4M), 2. V2X, Inc. ($39.9M), 3. Jll-Midnight Sun Ifms LLC ($32.3M), 4. J&J and Alms Mission Support Solutions, LLC ($28.1M), 5. Tbp&Jj Worldwide Services, LLC ($20M), 6. GKG Contractors LLC ($15.1M), 7. Nikken Sogyo Co., Ltd. ($14.1M), 8. Government Contracting Resources, Inc. ($12.4M), 9. Reyes Construction, Inc. ($7.88M), 10. Kira Aviation Services LLC ($6.77M).

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