Top 100 Contractors in PSC Y1BZ: Construction of Other Airfield Structures, Aug 2025–Jul 2026

Name: Top 100 Contractors in PSC Y1BZ: Construction of Other Airfield Structures, 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 Y1BZ: Construction of Other Airfield Structures, FY2025.

The top 10 won 89% of PSC Y1BZ contract dollars from August 2025 through July 2026

Contract obligations: $1,425,137,559 Net of deobligations, by contracts coded PSC Y1BZ
Contractors: 106 Parent companies with an obligation
Largest contractor: Walsh Federal LLC $418 million, 29.3% 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	Walsh Federal LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$418,280,087	29.3%	Rank history: #10 in FY2021, #2 in FY2022, #1 in FY2023, #4 in FY2024 and #14 in FY2025; up 12 since Aug 2024–Jul 2025.
2	Conti Federal Services, LLC 2 awardees Top agencies Army (Department of the Army)	$142,625,432	10.0%	Rank history: not on the FY2021 list, #1 in FY2022, #11 in FY2023, #3 in FY2024 and #3 in FY2025; up 2 since Aug 2024–Jul 2025.
3	Harper Construction Company Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$136,548,457	9.5%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #1 in FY2025; down 2 since Aug 2024–Jul 2025.
4	Federal Contracting Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$121,736,330	8.5%	Rank history: not on the FY2021 list, #3 in FY2022, #2 in FY2023, #18 in FY2024 and #6 in FY2025; up 18 since Aug 2024–Jul 2025.
5	ECC Expeditionary Constructors LLC Top agencies Navy (Department of the Navy)	$115,797,703	8.1%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
6	Korte Construction Company Top agencies Army (Department of the Army)	$111,489,428	7.8%	Rank history: #2 in FY2021, #36 in FY2022, #49 in FY2023, #2 in FY2024 and #5 in FY2025; down 4 since Aug 2024–Jul 2025.
7	BL Harbert International LLC Top agencies Army (Department of the Army)	$102,472,497	7.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
8	Clark Construction LLC 2 awardees, including Clark Construction Group - California, LP and Clark Construction Group LLC Top agencies Navy (Department of the Navy)	$62,904,589	4.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
9	WU & Associates Inc. Top agencies Army (Department of the Army)	$32,115,299	2.2%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	L.s. Black Constructors, LLC Top agencies Army (Department of the Army)	$22,092,640	1.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
11	Vet Industrial Inc. Top agencies Army (Department of the Army)	$18,460,674	1.3%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
12	Coffman Specialties, Inc. Top agencies Navy (Department of the Navy)	$17,687,140	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
13	M.c. Dean, Inc. Top agencies Navy (Department of the Navy)	$15,566,212	1.1%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	T.f. Powers Construction Co Top agencies USAF (Department of the Air Force)	$7,081,358	0.5%	Rank history: #60 in FY2021, #63 in FY2022, not on the FY2023 list, #100 in FY2024 and not on the FY2025 list; up 92 since Aug 2024–Jul 2025.
15	AR6 Construction & Engineering, LLC Top agencies USDA (Department of Agriculture)	$6,587,794	0.5%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Aug 2024–Jul 2025.
16	Balfour Beatty Construction, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$6,353,914	0.4%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, #59 in FY2024 and #24 in FY2025; up 37 since Aug 2024–Jul 2025.
17	Gilbane Building Company Through Gilbane Japan GK Top agencies Army (Department of the Army)	$5,568,593	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
18	Exyte U.s., Inc. Top agencies Army (Department of the Army)	$4,890,316	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
19	Nippo Corporation Top agencies Army (Department of the Army)	$4,835,820	0.3%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #75 in FY2025; up 59 since Aug 2024–Jul 2025.
20	West Brothers Construction Inc. Top agencies USAF (Department of the Air Force)	$4,758,074	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
21	ACC Construction Co., Inc. Top agencies Army (Department of the Army)	$4,633,400	0.3%	Rank history: not on the FY2021 list, #5 in FY2022, #33 in FY2023, #8 in FY2024 and #19 in FY2025; down 2 since Aug 2024–Jul 2025.
22	Calista Corp 2 awardees, including Brice Solutions, LLC and Brice Terra LLC Top agencies DOT (Department of Transportation)	$4,587,584	0.3%	Rank history: not on the FY2021 list, #39 in FY2022, not on the FY2023–FY2024 lists and #22 in FY2025; new, not ranked in Aug 2024–Jul 2025.
23	Ciri Development Corporation Through Silver Mountain Construction LLC Top agencies Army (Department of the Army)	$4,434,654	0.3%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	RQ Construction, LLC Top agencies Navy (Department of the Navy)	$4,051,619	0.3%	Rank history: #20 in FY2021, not on the FY2022 list, #6 in FY2023, #40 in FY2024 and #38 in FY2025; unchanged since Aug 2024–Jul 2025.
25	Aviation Construction & Electric, LLC Top agencies DOT (Department of Transportation)	$3,990,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
26	Mcneal Professional Services Inc. Top agencies DOT (Department of Transportation)	$3,101,201	0.2%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #36 in FY2025; up 7 since Aug 2024–Jul 2025.
27	Nexlegacy LLC Top agencies USAF (Department of the Air Force)	$2,770,814	0.2%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	International Towers LLC Top agencies DOT (Department of Transportation)	$2,629,048	0.2%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; down 11 since Aug 2024–Jul 2025.
29	Aim Engineering, K. K. Top agencies USAF (Department of the Air Force)	$2,392,957	0.2%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
30	Ahtna Builders, LLC Top agencies DOT (Department of Transportation)	$2,387,416	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
31	Hourigan Construction Corp Top agencies Navy (Department of the Navy)	$2,370,363	0.2%	Rank history: #8 in FY2021, #66 in FY2022, #25 in FY2023, #39 in FY2024 and #39 in FY2025; unchanged since Aug 2024–Jul 2025.
32	RG Tenney Electric Inc Top agencies DOT (Department of Transportation)	$2,329,690	0.2%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; down 5 since Aug 2024–Jul 2025.
33	Naser Mohammed Al-Baddah & Partner General Trading & Contracting Co. Top agencies Army (Department of the Army)	$2,262,730	0.2%	Rank history: not on the FY2021 list, #6 in FY2022, #26 in FY2023, #23 in FY2024 and #33 in FY2025; up 21 since Aug 2024–Jul 2025.
34	Cerris Builders, Inc. Top agencies Army (Department of the Army)	$2,097,680	0.1%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 41 since Aug 2024–Jul 2025.
35	Creativity Global Consultancy Limited Top agencies USAF (Department of the Air Force)	$1,789,743	0.1%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Aug 2024–Jul 2025.
36	Hightower Construction Co Inc. Top agencies USAF (Department of the Air Force)	$1,673,755	0.1%	Rank history: not on the FY2021 list, #20 in FY2022, not on the FY2023–FY2024 lists and #34 in FY2025; new, not ranked in Aug 2024–Jul 2025.
37	Seong Bo Const.ind.co.,Ltd. Top agencies Army (Department of the Army)	$1,600,949	0.1%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #35 in FY2025; down 29 since Aug 2024–Jul 2025.
38	Chugach Alaska Corporation Through Chugach Pacific Solutions LLC Top agencies USAF (Department of the Air Force)	$1,476,658	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
39	Crown Innovations, Inc. Top agencies DOT (Department of Transportation)	$1,147,722	0.1%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; up 21 since Aug 2024–Jul 2025.
40	Lawdensky Construction Company Incorporated Top agencies DOT (Department of Transportation)	$940,558	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023–FY2024 lists and #71 in FY2025; up 50 since Aug 2024–Jul 2025.
41	R.a. Burch Construction Co., Inc. Top agencies Navy (Department of the Navy)	$925,911	0.1%	Rank history: #3 in FY2021, #15 in FY2022, #72 in FY2023, #55 in FY2024 and not on the FY2025 list; up 79 since Aug 2024–Jul 2025.
42	Noresco, LLC Top agencies DOT (Department of Transportation)	$832,647	0.1%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and not on the FY2025 list; up 5 since Aug 2024–Jul 2025.
43	Tower Mrl, LLC 2 awardees Top agencies DOT (Department of Transportation)	$788,560	0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
44	Mejia International Group Corp Top agencies DOT (Department of Transportation)	$773,899	0.1%	Rank history: not on the FY2021 list, #57 in FY2022, #68 in FY2023, #45 in FY2024 and #30 in FY2025; down 12 since Aug 2024–Jul 2025.
45	Daco Construction Company Inc. Top agencies DOT (Department of Transportation)	$759,533	0.1%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #72 in FY2025; down 5 since Aug 2024–Jul 2025.
46	Iceland Prime Contractor Ltd Top agencies Navy (Department of the Navy)	$700,898	<0.1%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #82 in FY2025; up 37 since Aug 2024–Jul 2025.
47	Dare-Case Contracting Services LLC Top agencies DOI (Department of the Interior)	$663,270	<0.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #68 in FY2025; up 37 since Aug 2024–Jul 2025.
48	Bristol Bay Native Corporation Through SES Electrical LLC Top agencies USAF (Department of the Air Force)	$650,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, not on the FY2024 list and #42 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Alcan Builders Incorporated Top agencies Army (Department of the Army)	$639,627	<0.1%	Rank history: #63 in FY2021, not on the FY2022–FY2023 lists, #11 in FY2024 and not on the FY2025 list; down 39 since Aug 2024–Jul 2025.
50	Diversified Construction of Oklahoma, Inc. Top agencies Army (Department of the Army)	$610,363	<0.1%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #94 in FY2025; down 41 since Aug 2024–Jul 2025.
51	Sheckler Contracting, Inc. Top agencies DOT (Department of Transportation)	$554,477	<0.1%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #37 in FY2025; down 14 since Aug 2024–Jul 2025.
52	C.c. Pines Pty. Limited Top agencies Navy (Department of the Navy)	$516,020	<0.1%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #41 in FY2025; down 3 since Aug 2024–Jul 2025.
53	Bear Lumber Company Inc. Through Bear Brothers Inc. Top agencies USAF (Department of the Air Force)	$497,338	<0.1%	Rank history: not on the FY2021 list, #7 in FY2022, #18 in FY2023, #14 in FY2024 and #51 in FY2025; down 38 since Aug 2024–Jul 2025.
54	Exeo-Nakamoto Kogyo JV Top agencies Army (Department of the Army)	$483,199	<0.1%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; down 49 since Aug 2024–Jul 2025.
55	Kobo Utility Construction Corp. Top agencies DOT (Department of Transportation)	$449,382	<0.1%	Rank history: #95 in FY2021, #45 in FY2022, not on the FY2023 list, #29 in FY2024 and #28 in FY2025; down 26 since Aug 2024–Jul 2025.
56	Heidelberg Resources, LLC Top agencies Navy (Department of the Navy)	$383,871	<0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Aug 2024–Jul 2025.
57	Thompson Builders Corp Top agencies USAF (Department of the Air Force)	$370,669	<0.1%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	Achuti LLC Top agencies USAF (Department of the Air Force)	$348,630	<0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023, #86 in FY2024 and #69 in FY2025; up 36 since Aug 2024–Jul 2025.
59	Bundesrepublik Deutschland Top agencies Army (Department of the Army)	$286,648	<0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #17 in FY2023, #27 in FY2024 and not on the FY2025 list; down 36 since Aug 2024–Jul 2025.
60	Modular Connections LLC Top agencies DOT (Department of Transportation)	$285,476	<0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #54 in FY2025; down 4 since Aug 2024–Jul 2025.
61	TJS Group, LLC Top agencies DHS (Department of Homeland Security)	$270,071	<0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Eiffage Infraestructuras Sau Y Eiffage Energia Slu, Ute, Ley 18 / 1982 De 26 De Mayo, Eiffage Group Ute Top agencies Navy (Department of the Navy)	$264,384	<0.1%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023, #77 in FY2024 and #70 in FY2025; up 38 since Aug 2024–Jul 2025.
63	D7, LLC Top agencies Navy (Department of the Navy)	$247,422	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	Waypoint Contracting Inc Top agencies Army (Department of the Army)	$242,740	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 45 since Aug 2024–Jul 2025.
65	Krisher Electric LLC Top agencies DOT (Department of Transportation)	$237,511	<0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, not on the FY2024 list and #83 in FY2025; up 32 since Aug 2024–Jul 2025.
66	Tatitlek Corporation Through Port Fidalgo Constructors Inc. Top agencies Army (Department of the Army)	$231,175	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
67	Smithco, Inc. Top agencies USAF (Department of the Air Force)	$204,557	<0.1%	Rank history: #82 in FY2021, not on the FY2022–FY2024 lists and #64 in FY2025; up 9 since Aug 2024–Jul 2025.
68	Hensel Phelps Construction Co Top agencies Army (Department of the Army)	$196,153	<0.1%	Rank history: #1 in FY2021, #29 in FY2022, #24 in FY2023, #36 in FY2024 and #73 in FY2025; down 29 since Aug 2024–Jul 2025.
69	Burgos Group, LLC Top agencies DOT (Department of Transportation)	$173,699	<0.1%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
70	Baldi Bros. Incorporated Top agencies Navy (Department of the Navy)	$135,721	<0.1%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Defender Contracting & Construction LLC Top agencies USAF (Department of the Air Force)	$133,306	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	HDD JV Top agencies USAF (Department of the Air Force)	$128,928	<0.1%	Rank history: not on the FY2021 list, #14 in FY2022, not on the FY2023 list, #73 in FY2024 and #91 in FY2025; up 23 since Aug 2024–Jul 2025.
73	Zodiac-Poettker HBZ Joint Venture II, LLC Top agencies Army (Department of the Army)	$122,212	<0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 39 since Aug 2024–Jul 2025.
74	Alexandra Construction Inc. Top agencies USAF (Department of the Air Force)	$110,521	<0.1%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023, not on the FY2024 list and #55 in FY2025; down 11 since Aug 2024–Jul 2025.
75	Gast Construction Company Inc. Top agencies USAF (Department of the Air Force)	$104,830	<0.1%	Rank history: #13 in FY2021, #19 in FY2022, #82 in FY2023, #44 in FY2024 and #49 in FY2025; down 31 since Aug 2024–Jul 2025.
76	Tanaka Gumi Tanaka Construction Konno Kensetsu JV Top agencies USAF (Department of the Air Force)	$93,816	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
77	Nishimatsu Construction Co.,Ltd. Top agencies Army (Department of the Army)	$86,818	<0.1%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023, not on the FY2024 list and #25 in FY2025; down 51 since Aug 2024–Jul 2025.
78	Corbin Satcom Inc. Top agencies DOT (Department of Transportation)	$76,523	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
79	Source One Construction, LLC Top agencies DOT (Department of Transportation)	$76,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
80	KPH Construction Corp Top agencies USAF (Department of the Air Force)	$75,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and not on the FY2024–FY2025 lists; up 30 since Aug 2024–Jul 2025.
81	QAR Industries Inc. Through Antenna Products Corporation Top agencies DOT (Department of Transportation)	$69,775	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; new, not ranked in Aug 2024–Jul 2025.
82	Cheyanne Inc. Top agencies Navy (Department of the Navy)	$63,648	<0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Aug 2024–Jul 2025.
83	Expert Maintenance & Construction Services LLC Top agencies USAF (Department of the Air Force)	$58,506	<0.1%	Rank history: #74 in FY2021, #72 in FY2022, not on the FY2023 list, #48 in FY2024 and not on the FY2025 list; down 35 since Aug 2024–Jul 2025.
84	Greater Southwest Constructors Inc. Top agencies DOT (Department of Transportation)	$56,182	<0.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023, #17 in FY2024 and #61 in FY2025; down 63 since Aug 2024–Jul 2025.
85	Miwok Construction LLC Top agencies DOT (Department of Transportation)	$53,665	<0.1%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #60 in FY2025; down 21 since Aug 2024–Jul 2025.
86	Chitina Diversified Services, LLC Top agencies DOT (Department of Transportation)	$48,434	<0.1%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; down 70 since Aug 2024–Jul 2025.
87	Birmingham Industrial Construction, LLC Top agencies USAF (Department of the Air Force)	$46,660	<0.1%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and not on the FY2025 list; up 28 since Aug 2024–Jul 2025.
88	KEO & Associates Inc. Top agencies DOT (Department of Transportation)	$39,050	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Tandem Services LLC Top agencies DOT (Department of Transportation)	$34,590	<0.1%	Rank history: not on the FY2021 list, #25 in FY2022, not on the FY2023 list, #80 in FY2024 and #77 in FY2025; down 8 since Aug 2024–Jul 2025.
90	Hyundai Livart Furniture Co.,Ltd. Top agencies USAF (Department of the Air Force)	$33,885	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	Blue Way, Transportation of All Types of Cargoes, Customs Clearance Services and Logistics Services Ltd / Co Top agencies Army (Department of the Army)	$33,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and not on the FY2025 list; down 66 since Aug 2024–Jul 2025.
92	Suh'dutsing Contracting Services Top agencies DOI (Department of the Interior)	$32,430	<0.1%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; down 62 since Aug 2024–Jul 2025.
93	Smnc Properties, LLC Through Pacific Federal Contractors LLC Top agencies USAF (Department of the Air Force)	$28,123	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy)	$25,121	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
95	York K Electric Inc. Top agencies DOT (Department of Transportation)	$23,213	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
96	Street Legal Industries LLC Top agencies USAF (Department of the Air Force)	$23,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	Prime One Group General Trading and Contracting Company WLL Top agencies USAF (Department of the Air Force)	$22,104	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Bristol General Contractors, LLC Top agencies USAF (Department of the Air Force)	$16,880	<0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #79 in FY2025; down 47 since Aug 2024–Jul 2025.
99	Westbrook Towers Inc Top agencies DOT (Department of Transportation)	$15,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 63 since Aug 2024–Jul 2025.
100	Mcknight Construction Co. Top agencies Army (Department of the Army)	$10,937	<0.1%	Rank history: #79 in FY2021, #26 in FY2022, #76 in FY2023, #12 in FY2024 and #96 in FY2025; down 1 since Aug 2024–Jul 2025.

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100 of 106 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 $1.43 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC Y1BZ contractors in Aug 2025–Jul 2026?

1. Walsh Federal LLC ($418M), 2. Conti Federal Services, LLC ($143M), 3. Harper Construction Company Inc. ($137M), 4. Federal Contracting Inc. ($122M), 5. ECC Expeditionary Constructors LLC ($116M), 6. Korte Construction Company ($111M), 7. BL Harbert International LLC ($102M), 8. Clark Construction LLC ($62.9M), 9. WU & Associates Inc. ($32.1M), 10. L.s. Black Constructors, LLC ($22.1M).

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