Top 100 Contractors in PSC M1: Operate Government Owned Buildings, FY2022

Name: Top 100 Contractors in PSC M1: Operate Government Owned Buildings, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 73% of FY2022 PSC M1 contract dollars

Contract obligations: $36,414,761,613 Net of deobligations, by contracts coded PSC M1 or a code under it
Contractors: 1,067 Parent companies with an obligation
Largest contractor: Honeywell International Inc. $6.25 billion, 16.9% 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	Honeywell International Inc. 2 awardees, including National Technology & Engineering Solutions of Sandia, LLC and Honeywell Federal Manufacturing & Technologies, LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$6,250,733,201	16.9%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Triad National Security, LLC 2 awardees Top agencies DOE (Department of Energy) DTRA (Defense Threat Reduction Agency) DARPA (Defense Advanced Research Projects Agency)	$3,963,959,632	10.7%	Rank history: #2 in FY2021, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2021.
3	Consolidated Nuclear Security, LLC Top agencies DOE (Department of Energy) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$3,816,510,814	10.3%	Rank history: #4 in FY2021, #3 in FY2023, #4 in FY2024 and #6 in FY2025; up 1 since FY2021.
4	Battelle Memorial Institute 3 awardees, including Battelle Energy Alliance, LLC Top agencies DOE (Department of Energy) DOT (Department of Transportation)	$2,977,405,766	8.0%	Rank history: #3 in FY2021, #9 in FY2023, #5 in FY2024 and #4 in FY2025; down 1 since FY2021.
5	Ut-Battelle LLC Top agencies DOE (Department of Energy)	$2,469,176,857	6.7%	Rank history: #5 in FY2021, #4 in FY2023, #6 in FY2024 and #5 in FY2025; unchanged since FY2021.
6	Savannah River Nuclear Solutions LLC Top agencies DOE (Department of Energy)	$2,011,510,081	5.4%	Rank history: #6 in FY2021, #5 in FY2023, #23 in FY2024 and not on the FY2025 list; unchanged since FY2021.
7	Government of the United States 4 awardees, including Uchicago Argonne, LLC, Fermi Research Alliance, LLC and 99 FSS Fsvl Top agencies DOE (Department of Energy) DHS (Department of Homeland Security) Army (Department of the Army)	$1,953,669,625	5.3%	Rank history: #8 in FY2021, #8 in FY2023, #19 in FY2024 and not on the FY2025 list; up 1 since FY2021.
8	Fluor Corporation 3 awardees, including Fluor Marine Propulsion, LLC Top agencies DOE (Department of Energy)	$1,421,117,374	3.8%	Rank history: #7 in FY2021, #7 in FY2023, #3 in FY2024 and #3 in FY2025; down 1 since FY2021.
9	State of California Controllers Office 4 awardees, including The Regents of the University of California Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$1,330,833,126	3.6%	Rank history: #9 in FY2021, #11 in FY2023, #24 in FY2024 and not on the FY2025 list; unchanged since FY2021.
10	Brookhaven Science Associates LLC Top agencies DOE (Department of Energy)	$950,764,627	2.6%	Rank history: #11 in FY2021, #14 in FY2023, #12 in FY2024 and #14 in FY2025; up 1 since FY2021.
11	Mission Support & Test Services LLC Top agencies DOE (Department of Energy) Army (Department of the Army) USAF (Department of the Air Force)	$923,201,423	2.5%	Rank history: #10 in FY2021, #13 in FY2023, #9 in FY2024 and #12 in FY2025; down 1 since FY2021.
12	Alliance for Energy Innovation, LLC Top agencies DOE (Department of Energy) USAID (US Agency for International Development) OSD (Office of the Secretary of Defense)	$795,792,585	2.2%	Rank history: #13 in FY2021, #12 in FY2023, #8 in FY2024 and #13 in FY2025; up 1 since FY2021.
13	Leidos Holdings, Inc. 4 awardees, including Leidos Biomedical Research Inc. and Leidos, Inc. Top agencies HHS (Department of Health and Human Services) NSF (National Science Foundation) Army (Department of the Army)	$692,643,564	1.9%	Rank history: #12 in FY2021, #15 in FY2023, #17 in FY2024 and #19 in FY2025; down 1 since FY2021.
14	The Leland Stanford Junior University Top agencies DOE (Department of Energy) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$650,138,735	1.8%	Rank history: #14 in FY2021, #16 in FY2023, #14 in FY2024 and #16 in FY2025; unchanged since FY2021.
15	Deployed Resources LLC Top agencies DHS (Department of Homeland Security)	$551,860,970	1.5%	Rank history: #15 in FY2021, #17 in FY2023, #15 in FY2024 and #58 in FY2025; unchanged since FY2021.
16	Fluor Marine Propulsion, LLC Top agencies DOE (Department of Energy)	$428,889,352	1.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
17	Jefferson Science Associates, LLC Top agencies DOE (Department of Energy)	$270,413,499	0.7%	Rank history: #20 in FY2021, #19 in FY2023, #22 in FY2024 and #22 in FY2025; up 3 since FY2021.
18	Syncom Space Services LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$167,564,963	0.5%	Rank history: #18 in FY2021, #26 in FY2023, #43 in FY2024 and not on the FY2025 list; unchanged since FY2021.
19	The Trustees of Princeton University Top agencies DOE (Department of Energy) NASA (National Aeronautics and Space Administration)	$157,427,658	0.4%	Rank history: #22 in FY2021, #24 in FY2023, #27 in FY2024 and #21 in FY2025; up 3 since FY2021.
20	Battelle Energy Alliance, LLC Top agencies DOE (Department of Energy)	$155,660,948	0.4%	Rank history: not on the FY2021 list, #6 in FY2023, #11 in FY2024 and not on the FY2025 list; new.
21	Amentum Services, Inc. 2 awardees, including Dyncorp International LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$144,399,970	0.4%	Rank history: #43 in FY2021, #18 in FY2023, #20 in FY2024 and not on the FY2025 list; up 22 since FY2021.
22	Sodexo Management Inc. Top agencies Navy (Department of the Navy)	$128,951,846	0.3%	Rank history: not on the FY2021 list, #21 in FY2023, #21 in FY2024 and #20 in FY2025; new.
23	General Dynamics Corporation 3 awardees, including General Dynamics OTS (Wilkes Barre), LLC and General Dynamics Ordnance and Tactical Systems Inc. Top agencies Army (Department of the Army)	$120,247,129	0.3%	Rank history: not on the FY2021 list, #10 in FY2023, #18 in FY2024 and #28 in FY2025; new.
24	Management & Training Corporation Top agencies DOL (Department of Labor)	$118,502,622	0.3%	Rank history: #16 in FY2021, #45 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
25	Mid-America Conversion Services, LLC Top agencies DOE (Department of Energy)	$117,059,418	0.3%	Rank history: #23 in FY2021, #28 in FY2023, #28 in FY2024 and #31 in FY2025; down 2 since FY2021.
26	Sodexo Through Sodexo Management Inc. Top agencies Navy (Department of the Navy)	$110,492,592	0.3%	Rank history: #17 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
27	Chas Kurz & Co Inc 2 awardees, including Keystone Shipping Services, Inc. and Keystone Shipping Co Top agencies Navy (Department of the Navy) DOT (Department of Transportation) OSD (Office of the Secretary of Defense)	$106,384,663	0.3%	Rank history: #31 in FY2021, #22 in FY2023, #58 in FY2024 and not on the FY2025 list; up 4 since FY2021.
28	Goodwill Industries of Southeastern Wisconsin, Inc. Top agencies Navy (Department of the Navy)	$105,415,409	0.3%	Rank history: #26 in FY2021, #27 in FY2023, #61 in FY2024 and #24 in FY2025; down 2 since FY2021.
29	Agility Public Warehousing Co. KSC Through Agility DGS Logistics Services Company Kscc Top agencies DLA (Defense Logistics Agency)	$96,329,297	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
30	Indyne, Inc. Top agencies USAF (Department of the Air Force)	$80,332,031	0.2%	Rank history: #34 in FY2021, #36 in FY2023, #34 in FY2024 and #33 in FY2025; up 4 since FY2021.
31	Koa Lani JV LLC Top agencies Navy (Department of the Navy)	$79,161,267	0.2%	Rank history: #52 in FY2021, #37 in FY2023, #42 in FY2024 and #39 in FY2025; up 21 since FY2021.
32	Pride Industries Top agencies Army (Department of the Army) DMA (Defense Media Activity)	$77,437,964	0.2%	Rank history: #29 in FY2021, #33 in FY2023, #36 in FY2024 and not on the FY2025 list; down 3 since FY2021.
33	Ldrm LLC Top agencies DOS (Department of State)	$77,175,164	0.2%	Rank history: #33 in FY2021, #31 in FY2023, #37 in FY2024 and #32 in FY2025; unchanged since FY2021.
34	Ranger Land Systems, Inc. Top agencies DHS (Department of Homeland Security)	$76,527,688	0.2%	Rank history: not on the FY2021 list, #68 in FY2023, #87 in FY2024 and not on the FY2025 list; new.
35	Adams and Associates Inc. Top agencies DOL (Department of Labor)	$74,200,329	0.2%	Rank history: #32 in FY2021, #63 in FY2023, not on the FY2024 list and #77 in FY2025; down 3 since FY2021.
36	Tlingit Haida Tribal Business Corporation 2 awardees, including T&H Services, LLC and Kira Training Services LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$72,242,528	0.2%	Rank history: #36 in FY2021, #38 in FY2023, #50 in FY2024 and not on the FY2025 list; unchanged since FY2021.
37	Saltchuk Resources, Inc. Through Tote Services, LLC Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense)	$72,240,887	0.2%	Rank history: #28 in FY2021, #32 in FY2023, #86 in FY2024 and not on the FY2025 list; down 9 since FY2021.
38	Iowa State University of Science and Technology Top agencies DOE (Department of Energy)	$67,406,130	0.2%	Rank history: #41 in FY2021, #30 in FY2023, #48 in FY2024 and #29 in FY2025; up 3 since FY2021.
39	Robinson Aviation (Rva), Inc. Top agencies DOT (Department of Transportation)	$65,484,896	0.2%	Rank history: #39 in FY2021, #35 in FY2023, #35 in FY2024 and #35 in FY2025; unchanged since FY2021.
40	The GEO Group, Inc. 2 awardees, including GEO Secure Services, LLC Top agencies DOJ (Department of Justice)	$59,789,643	0.2%	Rank history: #48 in FY2021, #52 in FY2023, #29 in FY2024 and #30 in FY2025; up 8 since FY2021.
41	American Ordnance LLC Top agencies Army (Department of the Army)	$58,348,373	0.2%	Rank history: #65 in FY2021, #66 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2021.
42	Jacobs Engineering Group Inc. 3 awardees, including Amentum Technology, Inc. Top agencies NASA (National Aeronautics and Space Administration) MDA (DOD Missile Defense Agency)	$57,519,411	0.2%	Rank history: #42 in FY2021, #64 in FY2023, #94 in FY2024 and not on the FY2025 list; unchanged since FY2021.
43	Midwest Air Traffic Control Service Inc. 2 awardees Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$57,286,503	0.2%	Rank history: #45 in FY2021, #39 in FY2023, #38 in FY2024 and #37 in FY2025; up 2 since FY2021.
44	CAE Inc. Through CAE USA Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$56,253,725	0.2%	Rank history: #61 in FY2021, #40 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2021.
45	Pacific-Gulf Marine, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security)	$55,505,749	0.2%	Rank history: #64 in FY2021, #43 in FY2023, #53 in FY2024 and #53 in FY2025; up 19 since FY2021.
46	Serco North America (Holdings) Inc 2 awardees, including Serco Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$55,027,962	0.1%	Rank history: #55 in FY2021, #55 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
47	Crowley Government Services Inc. Top agencies Navy (Department of the Navy)	$54,502,229	0.1%	Rank history: #19 in FY2021, #47 in FY2023, #39 in FY2024 and #56 in FY2025; down 28 since FY2021.
48	Global Asset Technologies LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$53,648,556	0.1%	Rank history: #51 in FY2021 and not on the FY2023–FY2025 lists; up 3 since FY2021.
49	Arctic Slope Regional Corporation 2 awardees, including Asrc Federal Field Services, LLC and Asrc Federal System Solutions LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$49,022,088	0.1%	Rank history: #59 in FY2021, #51 in FY2023, #89 in FY2024 and #47 in FY2025; up 10 since FY2021.
50	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top agencies DOS (Department of State)	$47,368,496	0.1%	Rank history: #58 in FY2021, #42 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2021.
51	Tsay Professional Services, Inc. Top agencies Army (Department of the Army)	$46,459,835	0.1%	Rank history: #60 in FY2021, #67 in FY2023, #74 in FY2024 and #65 in FY2025; up 9 since FY2021.
52	KBR Services, LLC Top agencies USAF (Department of the Air Force)	$46,324,203	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
53	Matson Navigation Company, Inc. 2 awardees Top agencies Navy (Department of the Navy)	$42,179,909	0.1%	Rank history: #78 in FY2021, #41 in FY2023, #88 in FY2024 and not on the FY2025 list; up 25 since FY2021.
54	Magellan Midstream Partners L.P. Through Magellan Terminals Holdings LP Top agencies DLA (Defense Logistics Agency)	$40,629,032	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
55	Cherokee Nation 3 awardees, including Cherokee Nation Management & Consulting, L.l.c.. Top agencies Navy (Department of the Navy) DOL (Department of Labor)	$40,594,569	0.1%	Rank history: #70 in FY2021, #58 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2021.
56	Mercury Air Group, Inc. 2 awardees, including Maytag Aircraft LLC Top agencies DLA (Defense Logistics Agency)	$39,951,184	0.1%	Rank history: #87 in FY2021, #87 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2021.
57	Four Seasons Environmental Inc. Top agencies HHS (Department of Health and Human Services)	$39,155,682	0.1%	Rank history: #63 in FY2021, #75 in FY2023, not on the FY2024 list and #46 in FY2025; up 6 since FY2021.
58	Chevron Corporation 3 awardees, including Chevron Bahrain Trading Company W.l.l Top agencies DLA (Defense Logistics Agency)	$37,758,244	0.1%	Rank history: not on the FY2021 list, #91 in FY2023 and not on the FY2024–FY2025 lists; up 296 since FY2021.
59	South Carolina State of Through South Carolina Commission for Blind Top agencies Army (Department of the Army)	$36,795,696	0.1%	Rank history: #71 in FY2021, #54 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2021.
60	Georgia State of Through Georgia Vocational Rehabilitation Agency Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$34,886,517	0.1%	Rank history: #67 in FY2021, #56 in FY2023, #73 in FY2024 and not on the FY2025 list; up 7 since FY2021.
61	TK & K Services LLC Top agencies DLA (Defense Logistics Agency)	$34,482,870	0.1%	Rank history: #89 in FY2021, #61 in FY2023, not on the FY2024 list and #95 in FY2025; up 28 since FY2021.
62	OWL Companies Through Career Systems Development Corporation Top agencies DOL (Department of Labor)	$33,810,498	0.1%	Rank history: #37 in FY2021, #83 in FY2023 and not on the FY2024–FY2025 lists; down 25 since FY2021.
63	Patriot Contract Services, LLC Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) MDA (DOD Missile Defense Agency)	$33,461,989	0.1%	Rank history: #38 in FY2021, #48 in FY2023, #26 in FY2024 and #25 in FY2025; down 25 since FY2021.
64	Human Learning Systems LLC Top agencies DOL (Department of Labor)	$31,376,234	0.1%	Rank history: #88 in FY2021, #85 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2021.
65	The Day & Zimmermann Group, Inc. 2 awardees, including SOC Nevada LLC and American Ordnance LLC Top agencies Army (Department of the Army)	$30,918,248	0.1%	Rank history: #49 in FY2021, #29 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2021.
66	BAE Systems PLC 2 awardees, including BAE Systems Ordnance Systems Inc. Top agencies Army (Department of the Army)	$29,379,721	0.1%	Rank history: #35 in FY2021, #20 in FY2023, #25 in FY2024 and #41 in FY2025; down 31 since FY2021.
67	Bowhead Logistics Management, LLC Top agencies Army (Department of the Army)	$29,008,973	0.1%	Rank history: #24 in FY2021, #50 in FY2023, #78 in FY2024 and #79 in FY2025; down 43 since FY2021.
68	Serrato Corporation Top agencies DOL (Department of Labor)	$27,725,393	0.1%	Rank history: #46 in FY2021, #74 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2021.
69	Kbr, Inc. 2 awardees, including KBR Services, LLC Top agencies USAF (Department of the Air Force)	$27,649,002	0.1%	Rank history: #54 in FY2021 and not on the FY2023–FY2025 lists; down 15 since FY2021.
70	Transmontaigne Partners L.P. Top agencies DLA (Defense Logistics Agency)	$26,998,376	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
71	Vectrus Systems Corporation 2 awardees, including Vectrus Services A / S Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$26,077,945	0.1%	Rank history: #27 in FY2021, #49 in FY2023 and not on the FY2024–FY2025 lists; down 44 since FY2021.
72	Ocean Duchess, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$26,022,827	0.1%	Rank history: #44 in FY2021, #57 in FY2023, #66 in FY2024 and #62 in FY2025; down 28 since FY2021.
73	Melwood Horticultural Training Center, Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) DOJ (Department of Justice)	$25,972,264	0.1%	Rank history: not on the FY2021 list, #81 in FY2023, #82 in FY2024 and #68 in FY2025; up 89 since FY2021.
74	RTX Corporation Through Raytheon Company Top agencies Navy (Department of the Navy)	$25,368,861	0.1%	Rank history: #74 in FY2021, #70 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
75	Instituto Nacional De Tecnica Aeroespacial Esteban Terradas MDE Top agencies NASA (National Aeronautics and Space Administration)	$25,100,590	0.1%	Rank history: not on the FY2021 list, #92 in FY2023, #97 in FY2024 and #81 in FY2025; up 28 since FY2021.
76	HP Enterprise Services LLC Through Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration)	$24,448,234	0.1%	Rank history: not on the FY2021 list, #59 in FY2023 and not on the FY2024–FY2025 lists; new.
77	R & D Maintenance Services Inc. Top agencies Army (Department of the Army)	$23,908,341	0.1%	Rank history: #85 in FY2021, not on the FY2023 list, #54 in FY2024 and #60 in FY2025; up 8 since FY2021.
78	LB & B Associates Inc. Top agencies DLA (Defense Logistics Agency)	$22,920,418	0.1%	Rank history: #95 in FY2021, not on the FY2023 list, #95 in FY2024 and not on the FY2025 list; up 17 since FY2021.
79	Aleut O&M Services, LLC Top agencies Army (Department of the Army)	$22,813,687	0.1%	Rank history: #84 in FY2021, #69 in FY2023, #64 in FY2024 and #78 in FY2025; up 5 since FY2021.
80	Central Oklahoma American Indian Health Council, Inc. Top agencies HHS (Department of Health and Human Services)	$20,907,204	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 34 since FY2021.
81	Walsingham Group Inc Top agencies DLA (Defense Logistics Agency)	$20,043,840	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
82	BSH Management Services LLC Top agencies DLA (Defense Logistics Agency)	$19,422,962	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 280 since FY2021.
83	National Technology & Engineering Solutions of Sandia, LLC Top agencies DFAS (Defense Finance and Accounting Service)	$18,280,972	<0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #13 in FY2024 and not on the FY2025 list; new.
84	RES-Care Inc. Top agencies DOL (Department of Labor)	$17,389,061	<0.1%	Rank history: #69 in FY2021 and not on the FY2023–FY2025 lists; down 15 since FY2021.
85	Louis Berger U.S. Inc. 2 awardees, including VGS Aircraft Services, Inc. and VGS Infrastructure Services Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Army (Department of the Army)	$17,203,124	<0.1%	Rank history: #73 in FY2021, not on the FY2023 list, #98 in FY2024 and not on the FY2025 list; down 12 since FY2021.
86	The Chenega Corporation 3 awardees, including Chenega Facilities Management LLC, Chenega Global Protection, LLC and Chenega Applied Solutions, LLC Top agencies Army (Department of the Army) DOS (Department of State) USAF (Department of the Air Force)	$17,059,661	<0.1%	Rank history: #82 in FY2021, #79 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2021.
87	At2, LLC Top agencies USAF (Department of the Air Force)	$16,169,653	<0.1%	Rank history: #96 in FY2021, #80 in FY2023, #90 in FY2024 and #90 in FY2025; up 9 since FY2021.
88	Commonwealth Scientific and Industrial Research Organisation Top agencies NASA (National Aeronautics and Space Administration)	$15,498,304	<0.1%	Rank history: #83 in FY2021 and not on the FY2023–FY2025 lists; down 5 since FY2021.
89	El Dorado Resort Co.,Ltd. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$15,330,590	<0.1%	Rank history: #81 in FY2021, #86 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
90	Mitchco International Inc. Top agencies Army (Department of the Army)	$15,234,302	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
91	Alternate Perspectives Inc. Top agencies DOL (Department of Labor)	$15,029,182	<0.1%	Rank history: #53 in FY2021 and not on the FY2023–FY2025 lists; down 38 since FY2021.
92	Alisud - Gesac Handling - Servisair 2 - Scarl Through Algese S.R.L. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$14,870,932	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 28 since FY2021.
93	Heritage Services Corporation Top agencies DOL (Department of Labor)	$14,426,366	<0.1%	Rank history: #76 in FY2021 and not on the FY2023–FY2025 lists; down 17 since FY2021.
94	Regents of the University of California the (4458) Top agencies DOE (Department of Energy)	$14,220,763	<0.1%	Rank history: #47 in FY2021, #65 in FY2023, #69 in FY2024 and #71 in FY2025; down 47 since FY2021.
95	Endless Horizons Inc. Through Horizons Youth Services, L.C. Top agencies DOL (Department of Labor)	$14,128,079	<0.1%	Rank history: #79 in FY2021 and not on the FY2023–FY2025 lists; down 16 since FY2021.
96	Solution One Industries, Inc. Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$14,109,516	<0.1%	Rank history: #94 in FY2021, #89 in FY2023, #93 in FY2024 and #98 in FY2025; down 2 since FY2021.
97	Hunter Health Clinic Inc. Top agencies HHS (Department of Health and Human Services)	$14,045,264	<0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 71 since FY2021.
98	Southern Foodservice Management Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$13,892,397	<0.1%	Rank history: not on the FY2021 list, #62 in FY2023, #83 in FY2024 and #57 in FY2025; up 47 since FY2021.
99	State Health Services Texas Department of Through Texas Workforce Commission Top agencies Army (Department of the Army) Navy (Department of the Navy)	$13,735,009	<0.1%	Rank history: not on the FY2021 list, #53 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2021.
100	Tunista Logistics Solutions, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$13,545,578	<0.1%	Rank history: #100 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.

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100 of 1,067 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC M1

Code	Net obligations	Largest contractor
M1JZ Operation of Miscellaneous Buildings	$15,223,091,460	Honeywell International Inc.
M1AZ Operation of Other Administrative Facilities and Service Buildings	$975,632,404	Deployed Resources LLC
M1FD Operation of Dining Facilities	$546,327,141	Sodexo Management Inc.
M1PZ Operation of Other Non-Building Facilities	$488,237,202	Chas Kurz & Co Inc
M1NA Operation of Fuel Supply Facilities	$324,685,582	Agility Public Warehousing Co. KSC
M1HB Operation of Government-Owned Government-Operated (Gogo) R&D Facilities	$251,088,262	Syncom Space Services LLC
M1GZ Operation of Other Warehouse Buildings	$228,045,452	Amentum Services, Inc.
M1AA Operation of Office Buildings	$53,172,132	Tunista Logistics Solutions, LLC
M1PA Operation of Recreation Facilities (Non-Building)	$42,034,622	R & D Maintenance Services Inc.
M1LZ Operation of Parking Facilities	$26,424,897	In & Out Valet Co
M1ND Operation of Sewage and Waste Facilities	$20,457,465	Veolia Water North America-West LLC

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 $37 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. 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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 M1 contractors in FY2022?

1. Honeywell International Inc. ($6.25B), 2. Triad National Security, LLC ($3.96B), 3. Consolidated Nuclear Security, LLC ($3.82B), 4. Battelle Memorial Institute ($2.98B), 5. Ut-Battelle LLC ($2.47B), 6. Savannah River Nuclear Solutions LLC ($2.01B), 7. Government of the United States ($1.95B), 8. Fluor Corporation ($1.42B), 9. State of California Controllers Office ($1.33B), 10. Brookhaven Science Associates LLC ($951M).

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