Top 100 Contractors in PSC H1: Quality Control Services, FY2024

Name: Top 100 Contractors in PSC H1: Quality Control Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 79% of FY2024 PSC H1 contract dollars

Contract obligations: $711,393,783 Net of deobligations, by contracts coded PSC H1 or a code under it
Contractors: 652 Parent companies with an obligation
Largest contractor: GDC Middle East Company $414 million, 54.7% 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	GDC Middle East Company Top agencies Army (Department of the Army)	$413,682,264	54.7%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
2	Golder Europe Service Centre SRL Through WSP USA Services Inc. Top agencies DHS (Department of Homeland Security)	$73,130,962	9.7%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
3	Peckham Vocational Industries Inc. 2 awardees Top agencies Army (Department of the Army)	$37,635,826	5.0%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2023 and #3 in FY2025; up 1 since FY2023.
4	Vanguard Inspection Services Top agencies DHS (Department of Homeland Security)	$30,053,530	4.0%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #4 in FY2025; down 2 since FY2023.
5	Northrop Grumman Corporation 3 awardees, including Vinnell Arabia, LLC Top agencies Army (Department of the Army)	$15,772,203	2.1%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and not on the FY2025 list; down 4 since FY2023.
6	Eospace Inc. Top agencies MDA (DOD Missile Defense Agency)	$10,500,000	1.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
7	Sierra Nevada Company, LLC Top agencies USAF (Department of the Air Force)	$4,777,111	0.6%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
8	KBR Wyle Services, LLC 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$4,545,422	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
9	Parsons Brinckerhoff Holdings Inc. Through WSP USA Services Inc. Top agencies DHS (Department of Homeland Security)	$4,298,373	0.6%	Rank history: #3 in FY2021, #3 in FY2022, #6 in FY2023 and not on the FY2025 list; down 3 since FY2023.
10	Siemens Industry Inc. Top agencies Smithsonian (Smithsonian Institution) Army (Department of the Army) VA (Department of Veterans Affairs)	$3,538,021	0.5%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
11	Computer Evidence Specialists, LLC Top agencies HHS (Department of Health and Human Services)	$3,381,752	0.4%	Rank history: not on the FY2021 list, #9 in FY2022, #32 in FY2023 and not on the FY2025 list; up 21 since FY2023.
12	Phigenics LLC Top agencies VA (Department of Veterans Affairs)	$2,592,521	0.3%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; up 230 since FY2023.
13	GA Mechanical Inc. Top agencies Army (Department of the Army)	$2,224,126	0.3%	Rank history: not on the FY2021 list, #29 in FY2022, #11 in FY2023 and #13 in FY2025; down 2 since FY2023.
14	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,191,685	0.3%	Rank history: #5 in FY2021, #6 in FY2022, #5 in FY2023 and not on the FY2025 list; down 9 since FY2023.
15	New Jersey Department of Health Top agencies HHS (Department of Health and Human Services)	$2,159,450	0.3%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
16	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$2,037,273	0.3%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #22 in FY2025; up 72 since FY2023.
17	Colorado Department of Public Health & Environment Top agencies HHS (Department of Health and Human Services)	$1,998,879	0.3%	Rank history: #93 in FY2021, #93 in FY2022, not on the FY2023 list and #15 in FY2025; returned.
18	State of California Controllers Office Through California Department of Public Health Top agencies HHS (Department of Health and Human Services)	$1,925,686	0.3%	Rank history: #9 in FY2021, not on the FY2022 list, #8 in FY2023 and not on the FY2025 list; down 10 since FY2023.
19	Conviso-V LLC Top agencies SEC (Securities and Exchange Commission)	$1,803,471	0.2%	Rank history: not on the FY2021 list, #21 in FY2022, #21 in FY2023 and not on the FY2025 list; up 2 since FY2023.
20	Intertek Group PLC 2 awardees, including Intertek USA Inc. and Its Testing Services UK Ltd. Shj. BR. Top agencies DLA (Defense Logistics Agency)	$1,795,551	0.2%	Rank history: #62 in FY2021, #26 in FY2022, #13 in FY2023 and not on the FY2025 list; down 7 since FY2023.
21	Maryland Department of Health Top agencies HHS (Department of Health and Human Services)	$1,786,051	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
22	Koniag, Inc. Through Digitized Schematic Solutions LLC Top agencies USAF (Department of the Air Force)	$1,775,693	0.2%	Rank history: #36 in FY2021, #13 in FY2022, #20 in FY2023 and not on the FY2025 list; down 2 since FY2023.
23	Intertek USA Inc. Top agencies DLA (Defense Logistics Agency)	$1,750,256	0.2%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
24	Texas State University Top agencies HHS (Department of Health and Human Services)	$1,728,817	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
25	Wisconsin State of 2 awardees, including State of Wisconsin Department of Health Services and Trade and Consumer Protection Wisconsin Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,564,365	0.2%	Rank history: #16 in FY2021, #70 in FY2022, #19 in FY2023 and not on the FY2025 list; down 6 since FY2023.
26	Illinois Department of Human Service Top agencies HHS (Department of Health and Human Services)	$1,515,796	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
27	Pennsylvania Commonwealth of 2 awardees, including Pennsylvania Department of Health and Department of Agriculture Pennsylvania Top agencies HHS (Department of Health and Human Services)	$1,508,092	0.2%	Rank history: #74 in FY2021, not on the FY2022 list, #25 in FY2023 and #11 in FY2025; down 2 since FY2023.
28	Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force)	$1,504,467	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Southwest Equipment Group LLC Top agencies USDA (Department of Agriculture)	$1,486,072	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Technology Management & Budget Department of 2 awardees, including Michigan Department of Health and Human Services Top agencies HHS (Department of Health and Human Services)	$1,485,020	0.2%	Rank history: #61 in FY2021, #24 in FY2022, #12 in FY2023 and not on the FY2025 list; down 18 since FY2023.
31	Mental Health & Addiction Services Conne Top agencies HHS (Department of Health and Human Services)	$1,458,792	0.2%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
32	Washington State Liquor and Cannabis Board Top agencies HHS (Department of Health and Human Services)	$1,320,572	0.2%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; new.
33	Shabas Solutions LLC Top agencies HHS (Department of Health and Human Services)	$1,285,950	0.2%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; up 128 since FY2023.
34	Alabama Department of Health Top agencies HHS (Department of Health and Human Services)	$1,284,249	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	The Boeing Company Top agencies Army (Department of the Army)	$1,250,478	0.2%	Rank history: #29 in FY2021, #31 in FY2022, #34 in FY2023 and not on the FY2025 list; down 1 since FY2023.
36	Doc Development, Inc. Top agencies USAF (Department of the Air Force)	$1,211,365	0.2%	Rank history: not on the FY2021 list, #53 in FY2022, #35 in FY2023 and #27 in FY2025; down 1 since FY2023.
37	California Department of Public Health Top agencies HHS (Department of Health and Human Services)	$1,181,368	0.2%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
38	State of Iowa 2 awardees, including Iowa Department of Revenue and Iowa Department of Agriculture and Land Stewardship Top agencies HHS (Department of Health and Human Services)	$1,169,195	0.2%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; new.
39	Washington State Patrol Through State of Washington Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,136,868	0.2%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
40	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies VA (Department of Veterans Affairs)	$1,124,040	0.1%	Rank history: #32 in FY2021, #40 in FY2022, #40 in FY2023 and not on the FY2025 list; unchanged since FY2023.
41	Minnesota Department of Human Services Top agencies HHS (Department of Health and Human Services)	$1,105,961	0.1%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; new.
42	RTX Corporation Through Rockwell Collins, Inc. Top agencies Army (Department of the Army)	$1,100,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
43	GDA Corp Top agencies USDA (Department of Agriculture)	$1,091,887	0.1%	Rank history: #47 in FY2021, #51 in FY2022, #38 in FY2023 and not on the FY2025 list; down 5 since FY2023.
44	Michigan Department of Agriculture and Rural Development Top agencies HHS (Department of Health and Human Services)	$1,024,054	0.1%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
45	Cubrc, Inc. Top agencies HHS (Department of Health and Human Services)	$1,014,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	Ohio Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,007,676	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
47	Vinnell Arabia, LLC Top agencies Army (Department of the Army)	$1,005,151	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Department of State Health Services Top agencies HHS (Department of Health and Human Services)	$971,765	0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
49	Missouri Department of Mental Health Top agencies HHS (Department of Health and Human Services)	$959,807	0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
50	West Virginia Dept of Human Services Top agencies HHS (Department of Health and Human Services)	$958,545	0.1%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
51	Delaware Elevator, Inc. Top agencies DOS (Department of State)	$947,310	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 89 since FY2023.
52	Attorney General's Office, Mississippi Top agencies HHS (Department of Health and Human Services)	$924,300	0.1%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2025; new.
53	Spendsmart Group LLC Top agencies USAF (Department of the Air Force)	$905,975	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	Texas State University System Through Texas State University Top agencies HHS (Department of Health and Human Services)	$876,415	0.1%	Rank history: #23 in FY2021, #12 in FY2022, #10 in FY2023 and not on the FY2025 list; down 44 since FY2023.
55	Hawaii Department of Health Top agencies HHS (Department of Health and Human Services)	$843,313	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	State of Georgia Department of Revenue Top agencies HHS (Department of Health and Human Services)	$834,056	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
57	Atlantic First Industries Corporation Top agencies VA (Department of Veterans Affairs)	$803,107	0.1%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; up 233 since FY2023.
58	Minuteman Security Solutions LLC Top agencies Army (Department of the Army)	$797,503	0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #64 in FY2025; up 2 since FY2023.
59	Pi3E JV LLP Top agencies NASA (National Aeronautics and Space Administration)	$792,029	0.1%	Rank history: #42 in FY2021, #32 in FY2022, #41 in FY2023 and not on the FY2025 list; down 18 since FY2023.
60	State of Illinois 2 awardees, including Department of Public Health Illinois Top agencies HHS (Department of Health and Human Services)	$778,924	0.1%	Rank history: #38 in FY2021, #15 in FY2022, #17 in FY2023 and #18 in FY2025; down 43 since FY2023.
61	Boiler Efficiency Institute, LLC Top agencies VA (Department of Veterans Affairs)	$777,172	0.1%	Rank history: #58 in FY2021, #57 in FY2022, #65 in FY2023 and not on the FY2025 list; up 4 since FY2023.
62	Public Protection Cabinet Top agencies HHS (Department of Health and Human Services)	$750,230	0.1%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; new.
63	Massachusetts Department of Public Health Top agencies HHS (Department of Health and Human Services)	$744,510	0.1%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
64	Ecolab Inc. Through Nalco Company LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$707,622	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	State of Rhode Island 3 awardees, including RI Dept. of Behavioral Healthcare Devel and State of Rhode Island Department of Health Top agencies HHS (Department of Health and Human Services)	$677,074	0.1%	Rank history: not on the FY2021 list, #59 in FY2022, #57 in FY2023 and not on the FY2025 list; down 8 since FY2023.
66	NY State Agriculture & Markets Top agencies HHS (Department of Health and Human Services)	$648,552	0.1%	Rank history: #56 in FY2021, #58 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
67	Lockheed Martin Corporation 3 awardees Top agencies Army (Department of the Army)	$642,941	0.1%	Rank history: #31 in FY2021, #8 in FY2022, not on the FY2023 list and #8 in FY2025; returned.
68	North Carolina Department of Agriculture & Consumer Services Top agencies HHS (Department of Health and Human Services)	$615,947	0.1%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
69	Fickett Structural Solutions Inc. Top agencies Army (Department of the Army)	$605,182	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 140 since FY2023.
70	Tate Engineering Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$601,932	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$598,344	0.1%	Rank history: #97 in FY2021, #92 in FY2022, not on the FY2023 list and #42 in FY2025; up 40 since FY2023.
72	Oregon State of Through Oregon Dept of Agriculture Top agencies HHS (Department of Health and Human Services)	$583,422	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and not on the FY2025 list; down 2 since FY2023.
73	SGS Guam Inc. Top agencies DLA (Defense Logistics Agency)	$561,100	0.1%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; new.
74	Maxisoft Corporation Top agencies DHS (Department of Homeland Security)	$558,595	0.1%	Rank history: not on the FY2021 list, #34 in FY2022, #42 in FY2023 and #34 in FY2025; down 32 since FY2023.
75	Aesus Design Group LLC Top agencies VA (Department of Veterans Affairs)	$548,708	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	LC Industries Inc. Top agencies USAF (Department of the Air Force)	$548,425	0.1%	Rank history: not on the FY2021 list, #74 in FY2022, not on the FY2023 list and #33 in FY2025; up 65 since FY2023.
77	Compu Dynamics LLC Top agencies Army (Department of the Army)	$544,957	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Cartridge Technologies, LLC Top agencies Treasury (Department of the Treasury) USAGM (US Agency for Global Media) DHS (Department of Homeland Security)	$542,528	0.1%	Rank history: not on the FY2021 list, #96 in FY2022, #63 in FY2023 and #52 in FY2025; down 15 since FY2023.
79	Kansas Department of Revenue Top agencies HHS (Department of Health and Human Services)	$518,722	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
80	Conquest Solutions LLC Top agencies Army (Department of the Army)	$505,332	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and not on the FY2025 list; down 11 since FY2023.
81	Seneca Federal Solutions, LLC Top agencies Army (Department of the Army)	$485,044	0.1%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
82	The Northridge Group, Inc. Top agencies CFPB (Consumer Financial Protection Bureau)	$473,792	0.1%	Rank history: #60 in FY2021, #54 in FY2022, #49 in FY2023 and #50 in FY2025; down 33 since FY2023.
83	Arizona Department of Health Services Top agencies HHS (Department of Health and Human Services)	$464,660	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Department of Attorney General Maine Top agencies HHS (Department of Health and Human Services)	$454,741	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Venergy Group LLC Top agencies VA (Department of Veterans Affairs)	$454,051	0.1%	Rank history: #78 in FY2021, #67 in FY2022, #82 in FY2023 and #47 in FY2025; down 3 since FY2023.
86	New Hampshire Liquor Commission Top agencies HHS (Department of Health and Human Services)	$448,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Environmental Conservation Alaska Department Top agencies HHS (Department of Health and Human Services)	$442,766	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Evoqua Water Technologies, LLC 3 awardees Top agencies VA (Department of Veterans Affairs)	$440,638	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; up 64 since FY2023.
89	Alliant Enterprises, LLC Top agencies Navy (Department of the Navy)	$438,774	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Oklahoma State Department of Health Top agencies HHS (Department of Health and Human Services)	$415,835	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Trustees of Indiana University Top agencies HHS (Department of Health and Human Services)	$411,266	0.1%	Rank history: not on the FY2021 list, #69 in FY2022, not on the FY2023 list and not on the FY2025 list; up 91 since FY2023.
92	Minnesota Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$410,721	0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
93	Centrifugal Technologies, Inc. Top agencies Army (Department of the Army)	$403,124	0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; up 8 since FY2023.
94	Tech62 Inc. Top agencies VA (Department of Veterans Affairs)	$392,730	0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; up 108 since FY2023.
95	Yulista Integrated Solutions, LLC Top agencies Army (Department of the Army)	$382,378	0.1%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
96	State of Montana Department of Health and Human Services Top agencies HHS (Department of Health and Human Services)	$381,046	0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; new.
97	Guam Behavioral Health & Wellness Center Top agencies HHS (Department of Health and Human Services)	$380,531	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, #72 in FY2023 and not on the FY2025 list; down 25 since FY2023.
98	Cintas Corporation NO. 2 Top agencies VA (Department of Veterans Affairs)	$378,040	<0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2025; new.
99	Quest Diagnostics Incorporated Top agencies VA (Department of Veterans Affairs)	$359,960	<0.1%	Rank history: not on the FY2021 list, #38 in FY2022, #50 in FY2023 and #59 in FY2025; down 49 since FY2023.
100	General and Mechanical Services, LLC Top agencies DOI (Department of the Interior)	$349,774	<0.1%	Rank history: #81 in FY2021, not on the FY2022 list, #74 in FY2023 and #66 in FY2025; down 26 since FY2023.

Show 75 more

100 of 652 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC H1

Code	Net obligations	Largest contractor
H199 Quality Control Services: Miscellaneous	$62,155,743	KBR Wyle Services, LLC
H146 Quality Control Services: Water Purification and Sewage Treatment Equipment	$13,024,428	Phigenics LLC
H166 Quality Control Services: Instruments and Laboratory Equipment	$3,663,704	Cubrc, Inc.
H141 Quality Control Services: Refrigeration, Air Conditioning, and Air Circulating Equipment	$3,213,539	Delaware Elevator, Inc.
H163 Quality Control Services: Alarm, Signal, and Security Detection Systems	$2,315,544	Minuteman Security Solutions LLC
H165 Quality Control Services: Medical, Dental, and Veterinary Equipment and Supplies	$1,379,913	L1 Enterprises Incorporated
H142 Quality Control Services: Fire Fighting, Rescue, and Safety Equipment; and Environmental Protection Equipment and Materials	$1,026,270	Pacific Coast Contracting Group

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 $757 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 PSC H1 contractors in FY2024?

1. GDC Middle East Company ($414M), 2. Golder Europe Service Centre SRL ($73.1M), 3. Peckham Vocational Industries Inc. ($37.6M), 4. Vanguard Inspection Services ($30.1M), 5. Northrop Grumman Corporation ($15.8M), 6. Eospace Inc. ($10.5M), 7. Sierra Nevada Company, LLC ($4.78M), 8. KBR Wyle Services, LLC ($4.55M), 9. Parsons Brinckerhoff Holdings Inc. ($4.3M), 10. Siemens Industry Inc. ($3.54M).

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