Top 100 Contractors in NAICS 23712: Oil and Gas Pipeline and Related Structures Construction, FY2023

Name: Top 100 Contractors in NAICS 23712: Oil and Gas Pipeline and Related Structures Construction, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 79% of FY2023 NAICS 23712 contract dollars

Contract obligations: $706,611,575 Net of deobligations, by contracts coded NAICS 23712 or a code under it
Contractors: 116 Parent companies with an obligation
Largest contractor: Black Micro Corporation $202 million, 28.3% 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	Black Micro Corporation Top agencies Navy (Department of the Navy)	$201,801,348	28.3%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and not on the FY2025 list; new.
2	Aptim Federal Services LLC 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$70,947,525	10.0%	Rank history: #5 in FY2021, not on the FY2022 list, #7 in FY2024 and not on the FY2025 list; returned.
3	Nova Constructors-Obayashi JV Top agencies Army (Department of the Army)	$60,516,346	8.5%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2024 and #41 in FY2025; new.
4	Nova Group Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DLA (Defense Logistics Agency)	$46,813,671	6.6%	Rank history: #10 in FY2021, #3 in FY2022, #24 in FY2024 and not on the FY2025 list; down 1 since FY2022.
5	Reliable Contracting Group, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$38,924,091	5.5%	Rank history: #4 in FY2021, #7 in FY2022, #8 in FY2024 and #2 in FY2025; up 2 since FY2022.
6	Wood Environment & Infrastructure Solutions Inc. Through WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$38,359,719	5.4%	Rank history: #3 in FY2021, #9 in FY2022, #78 in FY2024 and not on the FY2025 list; up 3 since FY2022.
7	TOA Corporation Top agencies Army (Department of the Army)	$31,970,444	4.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
8	Red Point Construction LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Commerce (Department of Commerce)	$27,786,967	3.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
9	Dawson Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$22,795,494	3.2%	Rank history: #13 in FY2021, #8 in FY2022, #16 in FY2024 and #5 in FY2025; down 1 since FY2022.
10	Cape-Burns & Mcdonnell JV Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$20,164,659	2.8%	Rank history: #12 in FY2021, #15 in FY2022, #27 in FY2024 and not on the FY2025 list; up 5 since FY2022.
11	Gsi-Pond JV LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$19,235,813	2.7%	Rank history: #46 in FY2021, #32 in FY2022, #5 in FY2024 and #10 in FY2025; up 21 since FY2022.
12	Weston Solutions Holdings, Inc. 2 awardees, including Weston Solutions Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$16,674,310	2.3%	Rank history: #2 in FY2021, #5 in FY2022, #1 in FY2024 and #1 in FY2025; down 7 since FY2022.
13	Bristol Bay Native Corporation Through Bristol Engineering Services Company, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$12,490,142	1.8%	Rank history: #14 in FY2021, #27 in FY2022, #11 in FY2024 and #11 in FY2025; up 14 since FY2022.
14	SES Energy Services LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$12,369,426	1.7%	Rank history: #56 in FY2021, #12 in FY2022, #21 in FY2024 and #47 in FY2025; down 2 since FY2022.
15	San Juan Construction, Inc. Top agencies Army (Department of the Army)	$10,151,892	1.4%	Rank history: not on the FY2021 list, #33 in FY2022 and not on the FY2024–FY2025 lists; up 18 since FY2022.
16	Aytekin Serol Insaat Taahhut Muhendislik Anonim Sirketi Top agencies DLA (Defense Logistics Agency)	$7,154,271	1.0%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2024 and #14 in FY2025; new.
17	Goshawk, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$6,681,154	0.9%	Rank history: #17 in FY2021, #11 in FY2022, #9 in FY2024 and #17 in FY2025; down 6 since FY2022.
18	Silver Mountain Weston SB JV LLC Top agencies DLA (Defense Logistics Agency)	$6,000,994	0.8%	Rank history: not on the FY2021 list, #16 in FY2022, #17 in FY2024 and #20 in FY2025; down 2 since FY2022.
19	Tepa Construction Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$4,902,118	0.7%	Rank history: #53 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
20	Alabama Gas Corporation Through Spire Missouri Inc. Top agencies Army (Department of the Army)	$4,358,924	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
21	Gilbane Federal Top agencies DLA (Defense Logistics Agency)	$3,495,676	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
22	Yugen Kaisha Yamauchi Gumi Top agencies DLA (Defense Logistics Agency)	$2,794,940	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #49 in FY2025; new.
23	KNK Engineering Consulting Corp. Top agencies DLA (Defense Logistics Agency)	$2,501,160	0.4%	Rank history: #42 in FY2021, #13 in FY2022, #34 in FY2024 and #15 in FY2025; down 10 since FY2022.
24	Structural Associates Inc. Top agencies Army (Department of the Army)	$2,347,221	0.3%	Rank history: #9 in FY2021, #4 in FY2022, #22 in FY2024 and #18 in FY2025; down 20 since FY2022.
25	Four Tribes Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$2,254,349	0.3%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and not on the FY2025 list; new.
26	Nomlaki Technologies, LLC Top agencies DLA (Defense Logistics Agency)	$2,082,225	0.3%	Rank history: #36 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
27	American Engineering Corporation Top agencies Army (Department of the Army)	$2,003,917	0.3%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2024 and not on the FY2025 list; new.
28	Native Hawaiian Community Development Corporation 2 awardees, including GSI Pacific Inc. and GSI North America Inc. Top agencies DLA (Defense Logistics Agency)	$1,993,871	0.3%	Rank history: #24 in FY2021, #28 in FY2022, #68 in FY2024 and not on the FY2025 list; unchanged since FY2022.
29	Tfs-Aptim JV LLC Top agencies Navy (Department of the Navy)	$1,779,390	0.2%	Rank history: #95 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
30	Bodell Construction Company Top agencies Army (Department of the Army)	$1,626,682	0.2%	Rank history: #6 in FY2021, #68 in FY2022, #95 in FY2024 and #95 in FY2025; up 38 since FY2022.
31	Kear Civil Corp Top agencies DLA (Defense Logistics Agency)	$1,553,390	0.2%	Rank history: #18 in FY2021, #43 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
32	Pond Constructors Inc. Top agencies Navy (Department of the Navy)	$1,459,352	0.2%	Rank history: #11 in FY2021, #14 in FY2022, #37 in FY2024 and #19 in FY2025; down 18 since FY2022.
33	Rore Inc. Top agencies DLA (Defense Logistics Agency)	$1,342,384	0.2%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2024 and #56 in FY2025; new.
34	Prism Design & Construction, LLC Top agencies DOT (Department of Transportation)	$1,268,543	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2024 and not on the FY2025 list; new.
35	Utility Energy Systems, LLC Top agencies USAF (Department of the Air Force)	$1,251,070	0.2%	Rank history: #52 in FY2021, #59 in FY2022, #63 in FY2024 and #42 in FY2025; up 24 since FY2022.
36	Kinley Construction Company Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$1,124,101	0.2%	Rank history: #16 in FY2021, #36 in FY2022, #15 in FY2024 and #46 in FY2025; unchanged since FY2022.
37	JBW Group LLC Top agencies DLA (Defense Logistics Agency)	$1,090,944	0.2%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2024 and #38 in FY2025; new.
38	Site Work Solutions Top agencies DOE (Department of Energy)	$799,766	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Tri-Mont Engineering Co. Top agencies USAF (Department of the Air Force)	$724,150	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	Granite Construction Incorporated Through Granite Construction Company Guam Top agencies Navy (Department of the Navy)	$700,000	0.1%	Rank history: not on the FY2021 list, #2 in FY2022, #53 in FY2024 and not on the FY2025 list; down 38 since FY2022.
41	Fullidity LLC Top agencies DHS (Department of Homeland Security)	$694,167	0.1%	Rank history: not on the FY2021 list, #31 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
42	Dawson-Pond JV LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$630,435	0.1%	Rank history: #30 in FY2021, #50 in FY2022, #61 in FY2024 and not on the FY2025 list; up 8 since FY2022.
43	MEB General Contractors Inc. Top agencies Army (Department of the Army)	$614,272	0.1%	Rank history: #38 in FY2021, #6 in FY2022, #10 in FY2024 and #8 in FY2025; down 37 since FY2022.
44	The Chenega Corporation Through Chenega Reliable Services LLC Top agencies DLA (Defense Logistics Agency)	$609,660	0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2024 and not on the FY2025 list; new.
45	Eklutna Construction & Maintenance, LLC Top agencies Army (Department of the Army)	$587,411	0.1%	Rank history: #20 in FY2021, #35 in FY2022, not on the FY2024 list and #37 in FY2025; down 10 since FY2022.
46	Garco Construction, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$554,041	0.1%	Rank history: #1 in FY2021, #49 in FY2022, #4 in FY2024 and #40 in FY2025; up 3 since FY2022.
47	Mass Tank Inspection Services LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) USAF (Department of the Air Force)	$548,156	0.1%	Rank history: #75 in FY2021, #57 in FY2022, #60 in FY2024 and #51 in FY2025; up 10 since FY2022.
48	Tempest Enterprises Inc. Top agencies Army (Department of the Army)	$540,809	0.1%	Rank history: #15 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
49	New Dominion Construction LLC Top agencies DOI (Department of the Interior)	$528,792	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Cgrs Inc. Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$457,913	0.1%	Rank history: #55 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
51	Tokyu Construction Co., Ltd. Top agencies Army (Department of the Army)	$455,349	0.1%	Rank history: not on the FY2021 list, #10 in FY2022, #59 in FY2024 and not on the FY2025 list; down 41 since FY2022.
52	Daebo Industrial Co. Ltd. Through Daebo Engineering & Construction Co., Ltd. Top agencies Army (Department of the Army)	$439,011	0.1%	Rank history: #57 in FY2021, #52 in FY2022, #86 in FY2024 and not on the FY2025 list; unchanged since FY2022.
53	City of Corpus Christi Top agencies Navy (Department of the Navy)	$402,655	0.1%	Rank history: #51 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
54	Hanjin Heavy Industries & Construction Holdings Co. Ltd. Through Korea Engineering Consultants Corporation Top agencies Army (Department of the Army)	$371,061	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	ATI Wood-Solesi Top agencies Navy (Department of the Navy)	$355,146	<0.1%	Rank history: #45 in FY2021, #37 in FY2022, #70 in FY2024 and #54 in FY2025; down 18 since FY2022.
56	Compass Roofing LLC Top agencies DLA (Defense Logistics Agency)	$310,010	<0.1%	Rank history: not on the FY2021 list, #25 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
57	Billy W. Jarrett Construction Company, Inc. Top agencies VA (Department of Veterans Affairs)	$294,182	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	MGT Djibouti SARL Top agencies USAF (Department of the Air Force)	$291,259	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
59	Branching Out, Inc. Top agencies DOI (Department of the Interior)	$280,671	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
60	Sawtooth Construction LLC Top agencies Navy (Department of the Navy)	$271,456	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	UST General Contracting LLC Top agencies Army (Department of the Army)	$235,862	<0.1%	Rank history: #77 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
62	Frazier Investments, Inc. Top agencies Navy (Department of the Navy)	$211,483	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Lanterra LLC Top agencies DOI (Department of the Interior)	$182,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	Concord Construction, LLC Top agencies USDA (Department of Agriculture)	$175,379	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Korea Inspection System Corporation Top agencies Army (Department of the Army)	$166,957	<0.1%	Rank history: #64 in FY2021, #62 in FY2022, #75 in FY2024 and not on the FY2025 list; down 3 since FY2022.
66	Gems Environmental Management Services, Inc. Top agencies USAF (Department of the Air Force)	$159,583	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	Cook Inlet Region Inc. Through Silver Mountain Construction, LLC Top agencies DLA (Defense Logistics Agency)	$151,370	<0.1%	Rank history: #26 in FY2021, #53 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
68	Ross Group Construction Corporation, LLC Top agencies Navy (Department of the Navy)	$148,443	<0.1%	Rank history: #8 in FY2021, #17 in FY2022, not on the FY2024 list and #25 in FY2025; down 51 since FY2022.
69	UD Contracting Inc. Top agencies Army (Department of the Army)	$134,484	<0.1%	Rank history: #83 in FY2021, #73 in FY2022, not on the FY2024 list and #71 in FY2025; up 4 since FY2022.
70	UIC Commercial Services, LLC Through Rockford Corporation Top agencies DLA (Defense Logistics Agency)	$134,397	<0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2024 and not on the FY2025 list; new.
71	Nova Nacap A Joint Venture Top agencies Navy (Department of the Navy)	$131,950	<0.1%	Rank history: #29 in FY2021, #1 in FY2022, #39 in FY2024 and #76 in FY2025; down 70 since FY2022.
72	Independence Constructors Inc. Top agencies VA (Department of Veterans Affairs)	$127,079	<0.1%	Rank history: #78 in FY2021, #65 in FY2022, #62 in FY2024 and #67 in FY2025; down 7 since FY2022.
73	Multiforce Systems Corp Top agencies USDA (Department of Agriculture) Smithsonian (Smithsonian Institution) DOI (Department of the Interior)	$119,443	<0.1%	Rank history: #97 in FY2021, #83 in FY2022, #98 in FY2024 and #90 in FY2025; up 10 since FY2022.
74	Dmyles Inc. Top agencies USAF (Department of the Air Force)	$111,761	<0.1%	Rank history: not on the FY2021 list, #40 in FY2022, #81 in FY2024 and not on the FY2025 list; down 34 since FY2022.
75	Peter Spieleder GMBH Top agencies Army (Department of the Army)	$87,983	<0.1%	Rank history: #68 in FY2021, #84 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
76	Osage Research and Development LLC Top agencies USSOCOM (United States Special Operations Command)	$87,260	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
77	The Van Dyke Corporation Top agencies Navy (Department of the Navy)	$84,089	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #96 in FY2025; up 34 since FY2022.
78	WHH Nisqually-Garco JV 2 Top agencies DLA (Defense Logistics Agency)	$83,108	<0.1%	Rank history: #7 in FY2021, not on the FY2022 list, not on the FY2024 list and #61 in FY2025; up 44 since FY2022.
79	J3 Enterprise LLC Top agencies Army (Department of the Army)	$81,388	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
80	Tidewater, Inc. Top agencies DOS (Department of State)	$63,089	<0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2024 and not on the FY2025 list; new.
81	Heimes Corp Top agencies DOI (Department of the Interior)	$60,752	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
82	Petroleum Recovery Services LLC Top agencies Commerce (Department of Commerce)	$54,282	<0.1%	Rank history: not on the FY2021 list, #94 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
83	Guardian Fueling Technologies LLC Top agencies DOJ (Department of Justice)	$42,333	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Waldrop Construction Inc Top agencies DLA (Defense Logistics Agency)	$41,468	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Cascade Enterprises, Inc. Top agencies USAF (Department of the Air Force)	$38,541	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	TTI Environmental Inc. Top agencies DLA (Defense Logistics Agency)	$37,947	<0.1%	Rank history: not on the FY2021 list, #41 in FY2022, #48 in FY2024 and #93 in FY2025; down 45 since FY2022.
87	Shoshone Propane Top agencies DOI (Department of the Interior)	$36,498	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	Tetrasolv, Inc. Top agencies Navy (Department of the Navy)	$35,690	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Vetcon Services LLC Top agencies VA (Department of Veterans Affairs)	$35,640	<0.1%	Rank history: #93 in FY2021, #91 in FY2022, not on the FY2024 list and #87 in FY2025; up 2 since FY2022.
90	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, not on the FY2024 list and #75 in FY2025; down 4 since FY2022.
91	Commtank Inc. Top agencies VA (Department of Veterans Affairs)	$35,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Florida Institute of Technology Inc. Top agencies NASA (National Aeronautics and Space Administration)	$24,992	<0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and not on the FY2025 list; new.
93	That Makes Sense, LLC Top agencies DOI (Department of the Interior)	$22,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Walton Brothers Plumbing, LLC Top agencies DOI (Department of the Interior)	$21,514	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Lacreek Development Corp Top agencies DOI (Department of the Interior)	$18,776	<0.1%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; down 37 since FY2022.
96	Arrow Indian Contractors, Inc. Top agencies USDA (Department of Agriculture)	$18,530	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Midwest Electro-Tech Corp Top agencies VA (Department of Veterans Affairs)	$18,090	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Petro West Inc. Top agencies HHS (Department of Health and Human Services)	$15,893	<0.1%	Rank history: #89 in FY2021, #66 in FY2022 and not on the FY2024–FY2025 lists; down 32 since FY2022.
99	Earth Resource Group Top agencies USAF (Department of the Air Force)	$15,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Clean Fuels Associates Inc. Top agencies Navy (Department of the Navy)	$14,688	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 116 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 23712

Code	Net obligations	Largest contractor
237120 Oil and Gas Pipeline and Related Structures Construction	$706,611,575	Black Micro Corporation

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 $712 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.
Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2022. "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. The step from FY2022 takes the color of the rank change beside it.
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 NAICS 23712 contractors in FY2023?

1. Black Micro Corporation ($202M), 2. Aptim Federal Services LLC ($70.9M), 3. Nova Constructors-Obayashi JV ($60.5M), 4. Nova Group Inc. ($46.8M), 5. Reliable Contracting Group, LLC ($38.9M), 6. Wood Environment & Infrastructure Solutions Inc. ($38.4M), 7. TOA Corporation ($32M), 8. Red Point Construction LLC ($27.8M), 9. Dawson Enterprises, Inc. ($22.8M), 10. Cape-Burns & Mcdonnell JV ($20.2M).

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