Top 100 Contractors in NAICS 237120: Oil and Gas Pipeline and Related Structures Construction, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Weston Solutions Holdings Inc 2 awardees, including Weston Solutions Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$94,520,275	15.7%	Rank history: #2 in FY2021, #5 in FY2022, #12 in FY2023, #1 in FY2024 and #1 in FY2025; up 8 since Aug 2024–Jul 2025.
2	Nova Group, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$80,957,096	13.5%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; up 12 since Aug 2024–Jul 2025.
3	Goshawk, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$51,259,430	8.5%	Rank history: #17 in FY2021, #11 in FY2022, #17 in FY2023, #9 in FY2024 and #17 in FY2025; up 16 since Aug 2024–Jul 2025.
4	Absher Construction Co Top agencies Navy (Department of the Navy)	$47,418,612	7.9%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; new, not ranked in Aug 2024–Jul 2025.
5	Dawson Enterprises, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$43,631,784	7.3%	Rank history: #13 in FY2021, #8 in FY2022, #9 in FY2023, #16 in FY2024 and #5 in FY2025; up 8 since Aug 2024–Jul 2025.
6	WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$40,353,942	6.7%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Aug 2024–Jul 2025.
7	Reliable Contracting Group, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$29,952,309	5.0%	Rank history: #4 in FY2021, #7 in FY2022, #5 in FY2023, #8 in FY2024 and #2 in FY2025; down 4 since Aug 2024–Jul 2025.
8	Guidehouse Inc. Through Aptim Federal Services, LLC Top agencies DLA (Defense Logistics Agency)	$27,238,971	4.5%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #7 in FY2025; down 7 since Aug 2024–Jul 2025.
9	The Chenega Corporation 2 awardees, including Chenega Reliable Services LLC and Chenega Industrial Group, LLC Top agencies DLA (Defense Logistics Agency)	$21,076,970	3.5%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023, #85 in FY2024 and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	CMS Corporation Top agencies DLA (Defense Logistics Agency)	$13,497,000	2.2%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; up 106 since Aug 2024–Jul 2025.
11	Environmental Chemical Corporation Top agencies DLA (Defense Logistics Agency)	$7,978,477	1.3%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; up 78 since Aug 2024–Jul 2025.
12	Silver Mountain Weston SB JV LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$7,904,194	1.3%	Rank history: not on the FY2021 list, #16 in FY2022, #18 in FY2023, #17 in FY2024 and #20 in FY2025; up 9 since Aug 2024–Jul 2025.
13	Korea Housing Management Co.,Ltd Top agencies Army (Department of the Army)	$7,469,201	1.2%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #27 in FY2025; up 16 since Aug 2024–Jul 2025.
14	Aytekin Serol Insaat Taahhut Muhendislik Anonim Sirketi Top agencies DLA (Defense Logistics Agency)	$7,301,735	1.2%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023, #29 in FY2024 and #14 in FY2025; up 4 since Aug 2024–Jul 2025.
15	Structural Associates Inc. Top agencies Army (Department of the Army)	$6,213,708	1.0%	Rank history: #9 in FY2021, #4 in FY2022, #24 in FY2023, #22 in FY2024 and #18 in FY2025; up 12 since Aug 2024–Jul 2025.
16	Bristol Bay Native Corporation 2 awardees, including SES Energy Services LLC and Bristol Engineering Services Company, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$6,136,670	1.0%	Rank history: #14 in FY2021, #27 in FY2022, #13 in FY2023, #11 in FY2024 and #11 in FY2025; down 8 since Aug 2024–Jul 2025.
17	Tutor Perini Corporation Through Black Micro Corporation Top agencies Navy (Department of the Navy)	$6,021,401	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
18	Red Point Construction, LLC Top agencies Army (Department of the Army)	$5,560,152	0.9%	Rank history: #28 in FY2021, #30 in FY2022, not on the FY2023 list, #52 in FY2024 and #16 in FY2025; up 4 since Aug 2024–Jul 2025.
19	Prairie Band-Compass JV LLC Top agencies DLA (Defense Logistics Agency)	$4,840,047	0.8%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Aug 2024–Jul 2025.
20	Pond & Company Through Pond Constructors Inc. Top agencies Navy (Department of the Navy)	$4,652,578	0.8%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Aug 2024–Jul 2025.
21	Bering-Weston JV, LLC Top agencies DLA (Defense Logistics Agency)	$4,440,816	0.7%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Aug 2024–Jul 2025.
22	Gy6, LLC Top agencies DLA (Defense Logistics Agency)	$4,265,609	0.7%	Rank history: not on the FY2021–FY2025 lists; up 99 since Aug 2024–Jul 2025.
23	Hoolaulima Government Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$3,635,858	0.6%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #31 in FY2025; down 7 since Aug 2024–Jul 2025.
24	Ross Group Construction Corporation, LLC Top agencies DLA (Defense Logistics Agency)	$3,381,402	0.6%	Rank history: #8 in FY2021, #17 in FY2022, #68 in FY2023, not on the FY2024 list and #24 in FY2025; up 17 since Aug 2024–Jul 2025.
25	Pinewood Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$3,338,168	0.6%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	Front Range Construction Inc. Top agencies DOJ (Department of Justice)	$3,335,299	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
27	Sanken-Witco JV Through Witco Industries Ltd. Top agencies USAF (Department of the Air Force)	$3,293,711	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
28	Snodgrass Contracting LLC Top agencies Army (Department of the Army)	$3,053,844	0.5%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	TOA Corporation Top agencies Army (Department of the Army)	$2,565,372	0.4%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #34 in FY2025; up 4 since Aug 2024–Jul 2025.
30	FD Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$2,481,029	0.4%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Gold Wave Inc. Top agencies USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$2,381,126	0.4%	Rank history: not on the FY2021 list, #88 in FY2022, not on the FY2023–FY2024 lists and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
32	Tepa and Pond Constructors JV Top agencies DLA (Defense Logistics Agency)	$2,261,269	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
33	Eklutna Construction & Maintenance, LLC Top agencies Army (Department of the Army)	$1,799,542	0.3%	Rank history: #20 in FY2021, #35 in FY2022, #45 in FY2023, not on the FY2024 list and #37 in FY2025; new, not ranked in Aug 2024–Jul 2025.
34	JBW Group LLC Top agencies Army (Department of the Army)	$1,787,063	0.3%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023, #28 in FY2024 and #38 in FY2025; down 8 since Aug 2024–Jul 2025.
35	Arseal Technologies, Inc. Top agencies USDA (Department of Agriculture)	$1,738,475	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
36	Nash Holdings Inc. Top agencies DOI (Department of the Interior)	$1,593,143	0.3%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #62 in FY2025; up 17 since Aug 2024–Jul 2025.
37	Maxim Construction Company, Inc. Top agencies Navy (Department of the Navy)	$1,348,337	0.2%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; down 13 since Aug 2024–Jul 2025.
38	Teya Diversified Services LLC Top agencies DHS (Department of Homeland Security)	$1,237,209	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
39	Nova Constructors-Obayashi JV Top agencies Army (Department of the Army)	$1,088,652	0.2%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023, #49 in FY2024 and #41 in FY2025; unchanged since Aug 2024–Jul 2025.
40	Gsi-Enet JV LLC Top agencies Army (Department of the Army)	$1,004,153	0.2%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #26 in FY2025; down 20 since Aug 2024–Jul 2025.
41	Tri Coast-Pac TECH JV LLLP Top agencies DHS (Department of Homeland Security)	$955,069	0.2%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #72 in FY2025; down 10 since Aug 2024–Jul 2025.
42	WSP USA Government Solutions Inc. Top agencies DLA (Defense Logistics Agency)	$917,640	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
43	Skoda Contracting Co Top agencies Army (Department of the Army)	$868,671	0.1%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; up 3 since Aug 2024–Jul 2025.
44	Arkel International, L.L.C. Top agencies Army (Department of the Army)	$868,315	0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; down 8 since Aug 2024–Jul 2025.
45	Gsi-Pond JV LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$847,747	0.1%	Rank history: #46 in FY2021, #32 in FY2022, #11 in FY2023, #5 in FY2024 and #10 in FY2025; down 38 since Aug 2024–Jul 2025.
46	MEB General Contractors Inc. Top agencies Army (Department of the Army)	$678,458	0.1%	Rank history: #38 in FY2021, #6 in FY2022, #43 in FY2023, #10 in FY2024 and #8 in FY2025; down 40 since Aug 2024–Jul 2025.
47	Kinley Construction Company Top agencies Army (Department of the Army)	$589,694	0.1%	Rank history: #16 in FY2021, #36 in FY2022, #36 in FY2023, #15 in FY2024 and #46 in FY2025; up 7 since Aug 2024–Jul 2025.
48	Prime Veritas General Trading & Contracting Top agencies USAF (Department of the Air Force)	$509,767	0.1%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and not on the FY2025 list; down 10 since Aug 2024–Jul 2025.
49	Reon Inc. Top agencies HHS (Department of Health and Human Services)	$466,181	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
50	Aml-American Made Logistics Top agencies DOI (Department of the Interior)	$452,778	0.1%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Aug 2024–Jul 2025.
51	Calista Corp Through Brice Engineering, LLC Top agencies Army (Department of the Army)	$448,472	0.1%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Aug 2024–Jul 2025.
52	Phillips C&C LLC Top agencies VA (Department of Veterans Affairs)	$427,329	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
53	Ahtna Marine & Construction Company, LLC Top agencies DLA (Defense Logistics Agency)	$359,072	0.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #52 in FY2025; down 38 since Aug 2024–Jul 2025.
54	Utility Energy Systems, LLC Top agencies USAF (Department of the Air Force)	$358,340	0.1%	Rank history: #52 in FY2021, #59 in FY2022, #35 in FY2023, #63 in FY2024 and #42 in FY2025; down 14 since Aug 2024–Jul 2025.
55	Lacreek Development Corp Top agencies DOI (Department of the Interior)	$346,000	0.1%	Rank history: not on the FY2021 list, #58 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
56	Korea Engineering Consultants Corporation Top agencies Army (Department of the Army)	$337,429	0.1%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and #71 in FY2025; up 27 since Aug 2024–Jul 2025.
57	Mass Tank Inspection Services LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$322,569	0.1%	Rank history: #75 in FY2021, #57 in FY2022, #47 in FY2023, #60 in FY2024 and #50 in FY2025; down 1 since Aug 2024–Jul 2025.
58	Black Micro Corporation Top agencies Navy (Department of the Navy)	$322,297	0.1%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023, #12 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
59	S & B Infrastructure Ltd Top agencies Army (Department of the Army)	$321,287	0.1%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; down 49 since Aug 2024–Jul 2025.
60	D7, LLC Top agencies DLA (Defense Logistics Agency)	$305,702	0.1%	Rank history: #25 in FY2021, #18 in FY2022, not on the FY2023 list, #30 in FY2024 and #51 in FY2025; down 15 since Aug 2024–Jul 2025.
61	MVL USA Inc. Through Yugen Kaisha Yamauchi Gumi Top agencies DLA (Defense Logistics Agency)	$295,241	<0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Kwest Enterprises LLC Top agencies USAF (Department of the Air Force)	$288,946	<0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Aug 2024–Jul 2025.
63	Garco Construction, Inc. Top agencies Navy (Department of the Navy)	$283,556	<0.1%	Rank history: #1 in FY2021, #49 in FY2022, #46 in FY2023, #4 in FY2024 and #40 in FY2025; down 58 since Aug 2024–Jul 2025.
64	Bowhead Total Enterprise Solutions LLC Through Rockford Corporation Top agencies Army (Department of the Army)	$194,632	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
65	Procuves Top agencies DOS (Department of State)	$189,130	<0.1%	Rank history: not on the FY2021–FY2023 lists, #67 in FY2024 and #65 in FY2025; down 6 since Aug 2024–Jul 2025.
66	LK Construction Co., Ltd. Top agencies USAF (Department of the Air Force)	$150,815	<0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #64 in FY2025; down 6 since Aug 2024–Jul 2025.
67	Cape-Burns & Mcdonnell JV Top agencies DLA (Defense Logistics Agency)	$142,506	<0.1%	Rank history: #12 in FY2021, #15 in FY2022, #10 in FY2023, #27 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
68	Independence Constructors Inc. Top agencies VA (Department of Veterans Affairs)	$141,610	<0.1%	Rank history: #78 in FY2021, #65 in FY2022, #72 in FY2023, #62 in FY2024 and #66 in FY2025; up 8 since Aug 2024–Jul 2025.
69	KNK Engineering Consulting Corp. Top agencies DLA (Defense Logistics Agency)	$139,319	<0.1%	Rank history: #42 in FY2021, #13 in FY2022, #23 in FY2023, #34 in FY2024 and #15 in FY2025; down 52 since Aug 2024–Jul 2025.
70	MGI Inc. Top agencies VA (Department of Veterans Affairs)	$136,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #44 in FY2025; down 23 since Aug 2024–Jul 2025.
71	John W. Danforth Company Top agencies VA (Department of Veterans Affairs)	$116,845	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	UD Contracting Inc. Top agencies Army (Department of the Army)	$112,805	<0.1%	Rank history: #83 in FY2021, #73 in FY2022, #69 in FY2023, not on the FY2024 list and #70 in FY2025; up 6 since Aug 2024–Jul 2025.
73	J3 Enterprise LLC Top agencies Army (Department of the Army) Commerce (Department of Commerce)	$110,858	<0.1%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #67 in FY2025; down 1 since Aug 2024–Jul 2025.
74	Granite Construction Company Guam Top agencies Navy (Department of the Navy)	$100,483	<0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #45 in FY2025; down 31 since Aug 2024–Jul 2025.
75	Hcpa-Garco JV1 Top agencies Army (Department of the Army)	$74,466	<0.1%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and not on the FY2025 list; down 63 since Aug 2024–Jul 2025.
76	Nova Nacap A Joint Venture Top agencies Navy (Department of the Navy)	$72,448	<0.1%	Rank history: #29 in FY2021, #1 in FY2022, #71 in FY2023, #39 in FY2024 and #75 in FY2025; down 8 since Aug 2024–Jul 2025.
77	Haloa Construction LLC Top agencies DHS (Department of Homeland Security)	$64,646	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
78	G5 Enterprises LLC Top agencies DHS (Department of Homeland Security)	$53,298	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Aug 2024–Jul 2025.
79	A. West Enterprise, LLC Top agencies Army (Department of the Army)	$52,627	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
80	SEI Group Inc Top agencies DLA (Defense Logistics Agency)	$45,615	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Aug 2024–Jul 2025.
81	Homestead Services, LLC Top agencies USDA (Department of Agriculture)	$43,466	<0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Aug 2024–Jul 2025.
82	Vision Contracting Inc. Top agencies DOI (Department of the Interior)	$40,892	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Aug 2024–Jul 2025.
83	Core Engineered Solutions Inc. Top agencies Commerce (Department of Commerce)	$39,998	<0.1%	Rank history: #44 in FY2021, #47 in FY2022, not on the FY2023 list, #77 in FY2024 and #87 in FY2025; up 11 since Aug 2024–Jul 2025.
84	Vetcon Services LLC Top agencies VA (Department of Veterans Affairs)	$37,840	<0.1%	Rank history: #93 in FY2021, #91 in FY2022, #89 in FY2023, not on the FY2024 list and #86 in FY2025; up 9 since Aug 2024–Jul 2025.
85	Applied Remediation Company Inc. Top agencies USAF (Department of the Air Force)	$35,580	<0.1%	Rank history: not on the FY2021 list, #86 in FY2022, #90 in FY2023, not on the FY2024 list and #74 in FY2025; down 4 since Aug 2024–Jul 2025.
86	Wolf Creek Construction, LLC Top agencies DHS (Department of Homeland Security)	$34,900	<0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Aug 2024–Jul 2025.
87	Multiforce Systems Corp Top agencies DOI (Department of the Interior)	$30,879	<0.1%	Rank history: #97 in FY2021, #83 in FY2022, #73 in FY2023, #98 in FY2024 and #89 in FY2025; up 4 since Aug 2024–Jul 2025.
88	Eleven Bravo Group, LLC Top agencies VA (Department of Veterans Affairs)	$29,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 18 since Aug 2024–Jul 2025.
89	Yant Testing, Supply & Equipment Co. Top agencies USDA (Department of Agriculture)	$27,830	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	Amwest Consulting Services LLC Top agencies USAF (Department of the Air Force)	$25,700	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	MDM Construction LLC Top agencies VA (Department of Veterans Affairs)	$25,160	<0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #93 in FY2025; down 26 since Aug 2024–Jul 2025.
92	Cssg Inc. Top agencies Army (Department of the Army)	$25,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
93	Peacetree, Inc. Top agencies DHS (Department of Homeland Security)	$22,450	<0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Aug 2024–Jul 2025.
94	Integrity and Honor LLC Top agencies VA (Department of Veterans Affairs)	$19,651	<0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 9 since Aug 2024–Jul 2025.
95	Nations Gas Technologies Inc Top agencies DOI (Department of the Interior)	$18,811	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Aug 2024–Jul 2025.
96	HZ Construction Inc. Top agencies DHS (Department of Homeland Security)	$17,833	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	Alliance Network Integrators LLC Top agencies DHS (Department of Homeland Security)	$11,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Leak Detection Service Inc. Top agencies USAF (Department of the Air Force)	$10,086	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 12 since Aug 2024–Jul 2025.
99	Spatco Energy Solutions, LLC Top agencies USAF (Department of the Air Force)	$9,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Petrotest Inc. Top agencies DOJ (Department of Justice)	$3,911	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 13 since 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 $601 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