Top 100 Smithsonian Institution Contractors, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Clark Construction Group LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$53,322,108	10.9%	Rank history: not on the FY2021 list, #10 in FY2022, #1 in FY2024 and #30 in FY2025; up 9 since FY2022.
2	Associated Builders, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$35,260,016	7.2%	Rank history: #9 in FY2021, #3 in FY2022, #65 in FY2024 and not on the FY2025 list; up 1 since FY2022.
3	Universal Protection GP, LLC Through Universal Protection Service, Limited Partnership Top NAICS codes 561612 Security Guards and Patrol Services	$23,619,975	4.8%	Rank history: #4 in FY2021, #1 in FY2022, #21 in FY2024 and not on the FY2025 list; down 2 since FY2022.
4	Government of the United States Through Smithsonian Institution Top NAICS codes 531120 Lessors of Nonresidential Buildings (except Miniwarehouses)	$18,227,296	3.7%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2024 and not on the FY2025 list; new.
5	Clark / Smoot / Consigli, A Joint Venture Top NAICS codes 236220 Commercial and Institutional Building Construction 712110 Museums	$17,985,774	3.7%	Rank history: #1 in FY2021, #2 in FY2022, #12 in FY2024 and #4 in FY2025; down 3 since FY2022.
6	TC Pennsy Drive LLC Top NAICS codes 531190 Lessors of Other Real Estate Property 531120 Lessors of Nonresidential Buildings (except Miniwarehouses)	$17,913,894	3.7%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2024 and not on the FY2025 list; new.
7	Exelon Corporation 3 awardees, including Potomac Electric Power Co, Constellation Newenergy Inc. and Baltimore Gas and Electric Company Top NAICS codes 221122 Electric Power Distribution 236220 Commercial and Institutional Building Construction 221118 Other Electric Power Generation	$16,125,956	3.3%	Rank history: #8 in FY2021, #4 in FY2022, #7 in FY2024 and not on the FY2025 list; down 3 since FY2022.
8	Grunley Construction Co., Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$13,902,513	2.8%	Rank history: #3 in FY2021, #8 in FY2022, #2 in FY2024 and #6 in FY2025; unchanged since FY2022.
9	Lend Lease Corporation Ltd Through Lendlease (Us) Construction Inc. Top NAICS codes 541310 Architectural Services 541330 Engineering Services	$9,955,937	2.0%	Rank history: #5 in FY2021, #6 in FY2022, #8 in FY2024 and not on the FY2025 list; down 3 since FY2022.
10	Trizechahn Colony Square GP Limited Liability Company Top NAICS codes 531120 Lessors of Nonresidential Buildings (except Miniwarehouses)	$8,133,469	1.7%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2024 and #15 in FY2025; new.
11	TEX / Am Construction Co., Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 712110 Museums	$7,910,662	1.6%	Rank history: #2 in FY2021, #7 in FY2022, #27 in FY2024 and #17 in FY2025; down 4 since FY2022.
12	Som-Selldorf Architects - A Joint Venture Top NAICS codes 541310 Architectural Services	$7,846,630	1.6%	Rank history: #41 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
13	Ewing Cole Inc. Top NAICS codes 541310 Architectural Services	$6,916,869	1.4%	Rank history: #45 in FY2021, #13 in FY2022, #10 in FY2024 and #12 in FY2025; unchanged since FY2022.
14	Annum Architects, Inc. Top NAICS codes 541310 Architectural Services	$6,611,448	1.4%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2024 and not on the FY2025 list; up 89 since FY2022.
15	EPC Service Inc Top NAICS codes 236220 Commercial and Institutional Building Construction	$5,106,685	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Ayers / Saint / Gross, Incorporated Top NAICS codes 541310 Architectural Services	$4,984,002	1.0%	Rank history: #11 in FY2021, #11 in FY2022, #28 in FY2024 and #71 in FY2025; down 5 since FY2022.
17	Infostructures, Inc. Top NAICS codes 541513 Computer Facilities Management Services 519130 Internet Publishing and Broadcasting and Web Search Portals 541511 Custom Computer Programming Services	$4,400,493	0.9%	Rank history: #22 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
18	Huang-Cfm Joint Venture Top NAICS codes 236220 Commercial and Institutional Building Construction	$4,219,668	0.9%	Rank history: #14 in FY2021, #51 in FY2022, #30 in FY2024 and #58 in FY2025; up 33 since FY2022.
19	Elcon Enterprises Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 238290 Other Building Equipment Contractors	$4,148,752	0.8%	Rank history: #31 in FY2021, #45 in FY2022, #32 in FY2024 and #75 in FY2025; up 26 since FY2022.
20	HSU Development, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,766,482	0.8%	Rank history: #23 in FY2021, #19 in FY2022, #63 in FY2024 and #52 in FY2025; down 1 since FY2022.
21	Knowcean Consulting Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$3,756,933	0.8%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2024 and #20 in FY2025; new.
22	Edenred Commuter Benefit Solutions LLC Through Edenred Benefits LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$3,528,000	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Design and Production Incorporated Top NAICS codes 712110 Museums	$3,345,767	0.7%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2024 and #90 in FY2025; up 461 since FY2022.
24	RTX Corporation Through Noresco, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,266,654	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
25	Parsons Corporation 2 awardees, including Ptsi Managed Services Inc. and Williams Electric Co Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths) 334290 Other Communications Equipment Manufacturing	$3,232,486	0.7%	Rank history: not on the FY2021 list, #32 in FY2022, #66 in FY2024 and #27 in FY2025; up 7 since FY2022.
26	Belt Built Contracting, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,230,500	0.7%	Rank history: #19 in FY2021, #24 in FY2022, #60 in FY2024 and #85 in FY2025; down 2 since FY2022.
27	B3 Enterprises LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,085,235	0.6%	Rank history: #24 in FY2021, #17 in FY2022, #53 in FY2024 and not on the FY2025 list; down 10 since FY2022.
28	Page-Loring LLC Top NAICS codes 541310 Architectural Services	$3,069,347	0.6%	Rank history: #6 in FY2021, #16 in FY2022, #38 in FY2024 and not on the FY2025 list; down 12 since FY2022.
29	WGL Energy Services Inc. 2 awardees, including Washington Gas Light Company Top NAICS codes 221210 Natural Gas Distribution	$3,021,004	0.6%	Rank history: #25 in FY2021, #29 in FY2022, #35 in FY2024 and not on the FY2025 list; unchanged since FY2022.
30	Potomac Software Group, LLC Top NAICS codes 541512 Computer Systems Design Services	$3,020,002	0.6%	Rank history: not on the FY2021 list, #27 in FY2022, #31 in FY2024 and #28 in FY2025; down 3 since FY2022.
31	Dell Federal Systems L.P. 2 awardees, including Dell Marketing L.P. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers 334111 Electronic Computer Manufacturing 511210 Software Publishers	$2,819,272	0.6%	Rank history: #16 in FY2021, #21 in FY2022, #100 in FY2024 and not on the FY2025 list; down 10 since FY2022.
32	Repaintex Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$2,668,628	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
33	Quotientsub LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$2,619,578	0.5%	Rank history: #33 in FY2021, #30 in FY2022, #26 in FY2024 and #21 in FY2025; down 3 since FY2022.
34	Xclipse Inc. Top NAICS codes 541511 Custom Computer Programming Services	$2,619,044	0.5%	Rank history: not on the FY2021 list, #37 in FY2022, #45 in FY2024 and #38 in FY2025; up 3 since FY2022.
35	ECM Wise Corp Through Spacesaver Systems, Inc. Top NAICS codes 337215 Showcase, Partition, Shelving, and Locker Manufacturing 236220 Commercial and Institutional Building Construction 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$2,610,237	0.5%	Rank history: #49 in FY2021, #49 in FY2022, #9 in FY2024 and not on the FY2025 list; up 14 since FY2022.
36	Pegasus Radio Corp Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$2,507,713	0.5%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and not on the FY2025 list; up 184 since FY2022.
37	Dominion Resources Inc. Through Virginia Electric and Power Company Top NAICS codes 221122 Electric Power Distribution	$2,386,000	0.5%	Rank history: #35 in FY2021, #69 in FY2022, #42 in FY2024 and #46 in FY2025; up 32 since FY2022.
38	Technology Trends Group, LLC Top NAICS codes 541519 Other Computer Related Services 541618 Other Management Consulting Services	$2,221,969	0.5%	Rank history: #59 in FY2021, #25 in FY2022, #39 in FY2024 and #36 in FY2025; down 13 since FY2022.
39	Futrend Technology Inc. Top NAICS codes 611420 Computer Training	$2,175,460	0.4%	Rank history: #37 in FY2021, #66 in FY2022, #75 in FY2024 and #67 in FY2025; up 27 since FY2022.
40	Ko-Am Enterprises Inc. Top NAICS codes 238330 Flooring Contractors	$2,154,722	0.4%	Rank history: not on the FY2021 list, #42 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
41	DJB Contracting Inc. Top NAICS codes 238160 Roofing Contractors	$2,124,404	0.4%	Rank history: #42 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
42	Trueblue, Inc. Through Peopleready Inc. Top NAICS codes 561320 Temporary Help Services 238220 Plumbing, Heating, and Air-Conditioning Contractors	$2,042,509	0.4%	Rank history: #70 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; up 29 since FY2022.
43	Perkins + Will Inc. Top NAICS codes 541310 Architectural Services	$1,898,664	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	Architrave P.C. Top NAICS codes 541310 Architectural Services	$1,833,979	0.4%	Rank history: #36 in FY2021, #28 in FY2022, #50 in FY2024 and #80 in FY2025; down 16 since FY2022.
45	Iron Mountain Incorporated 4 awardees, including Crozier Fine Arts Inc., Iron Mountain Information Management LLC and Iron Mountain / National Underground Storage, Inc. Top NAICS codes 531120 Lessors of Nonresidential Buildings (except Miniwarehouses) 541611 Administrative Management and General Management Consulting Services 488991 Packing and Crating	$1,825,791	0.4%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2024 and #64 in FY2025; new.
46	Mythics, LLC 2 awardees, including Emergent, LLC Top NAICS codes 513210 Software Publishers 511210 Software Publishers	$1,602,689	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 120 since FY2022.
47	KEE Construction Services, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,584,991	0.3%	Rank history: #15 in FY2021, #15 in FY2022, #36 in FY2024 and #68 in FY2025; down 32 since FY2022.
48	Gwwo, Inc. Top NAICS codes 541310 Architectural Services	$1,508,710	0.3%	Rank history: #90 in FY2021, not on the FY2022 list, not on the FY2024 list and #53 in FY2025; up 68 since FY2022.
49	Smithgroup Companies, Inc. Through Smithgroup, Inc. Top NAICS codes 541310 Architectural Services	$1,494,563	0.3%	Rank history: not on the FY2021 list, #72 in FY2022, #87 in FY2024 and not on the FY2025 list; up 23 since FY2022.
50	State of Arizona Through University of Arizona Top NAICS codes 611310 Colleges, Universities, and Professional Schools	$1,456,652	0.3%	Rank history: #44 in FY2021, #54 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
51	Your Recruiting Company, Inc. Top NAICS codes 561320 Temporary Help Services 541990 All Other Professional, Scientific, and Technical Services	$1,421,129	0.3%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2024 and #94 in FY2025; up 75 since FY2022.
52	Midtown Personnel Inc. Top NAICS codes 561320 Temporary Help Services 541611 Administrative Management and General Management Consulting Services 561110 Office Administrative Services	$1,408,189	0.3%	Rank history: not on the FY2021 list, #36 in FY2022, #71 in FY2024 and not on the FY2025 list; down 16 since FY2022.
53	Severn Associates LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,377,004	0.3%	Rank history: #18 in FY2021, not on the FY2022 list, #95 in FY2024 and #14 in FY2025; up 441 since FY2022.
54	Pifinity, Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$1,365,827	0.3%	Rank history: #39 in FY2021, #48 in FY2022, #61 in FY2024 and not on the FY2025 list; down 6 since FY2022.
55	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services	$1,270,588	0.3%	Rank history: #77 in FY2021, #56 in FY2022, #69 in FY2024 and #73 in FY2025; up 1 since FY2022.
56	Biscayne Contractors, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,242,546	0.3%	Rank history: #10 in FY2021, #9 in FY2022, #16 in FY2024 and #7 in FY2025; down 47 since FY2022.
57	Fearless Solutions, LLC Top NAICS codes 541330 Engineering Services	$1,228,563	0.3%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2024–FY2025 lists; up 31 since FY2022.
58	Distribuidora TW S.A. Top NAICS codes 541310 Architectural Services	$1,218,620	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 225 since FY2022.
59	Louis Berger U.S. Inc. Through WSP USA Inc. Top NAICS codes 541310 Architectural Services	$1,177,439	0.2%	Rank history: not on the FY2021 list, #65 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
60	AECOM Through URS Group Inc-Hartman Cox Architects LLP A Joint Venture Top NAICS codes 541310 Architectural Services	$1,148,300	0.2%	Rank history: #27 in FY2021, #50 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
61	Kunkel Construction, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 541330 Engineering Services 541310 Architectural Services	$1,095,652	0.2%	Rank history: #63 in FY2021, #53 in FY2022, #49 in FY2024 and #22 in FY2025; down 8 since FY2022.
62	Romana Prosperity Construction Corporation Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,087,462	0.2%	Rank history: not on the FY2021 list, #40 in FY2022, not on the FY2024 list and #50 in FY2025; down 22 since FY2022.
63	DR Arquitectura SA Top NAICS codes 541310 Architectural Services	$1,050,872	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 135 since FY2022.
64	Sierrita Mining & Ranching Company LP Top NAICS codes 236220 Commercial and Institutional Building Construction 237990 Other Heavy and Civil Engineering Construction	$1,036,532	0.2%	Rank history: #26 in FY2021, #35 in FY2022, not on the FY2024 list and #55 in FY2025; down 29 since FY2022.
65	CLC Cabling Service, Inc. Top NAICS codes 541513 Computer Facilities Management Services	$1,034,624	0.2%	Rank history: #75 in FY2021, #41 in FY2022, #82 in FY2024 and #62 in FY2025; down 24 since FY2022.
66	Diversified Media Group, L.L.C. Through One Diversified LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services 541310 Architectural Services	$1,021,894	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 177 since FY2022.
67	Seguridad Permanente Y Proteccion S.A. Top NAICS codes 561612 Security Guards and Patrol Services	$1,005,989	0.2%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and #77 in FY2025; new.
68	Consolidated Edison Through Consolidated Edison Company of New York, Inc. Top NAICS codes 221122 Electric Power Distribution 221330 Steam and Air-Conditioning Supply	$1,002,000	0.2%	Rank history: #53 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
69	Quinn Evans Architects Inc. Top NAICS codes 541330 Engineering Services 541310 Architectural Services	$997,551	0.2%	Rank history: #57 in FY2021, #58 in FY2022, #25 in FY2024 and #56 in FY2025; down 11 since FY2022.
70	Intellimar Inc. 2 awardees, including Concentric Security LLC Top NAICS codes 561621 Security Systems Services (except Locksmiths) 238210 Electrical Contractors and Other Wiring Installation Contractors	$988,306	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	United Development USA Inc. Top NAICS codes 541513 Computer Facilities Management Services	$977,999	0.2%	Rank history: #66 in FY2021, #67 in FY2022, #70 in FY2024 and #86 in FY2025; down 4 since FY2022.
72	Kapstone Technologies, Inc. Top NAICS codes 541513 Computer Facilities Management Services	$975,602	0.2%	Rank history: #51 in FY2021, #75 in FY2022, not on the FY2024 list and #63 in FY2025; up 3 since FY2022.
73	Costello Farm & Lawn Service Inc. Top NAICS codes 115113 Crop Harvesting, Primarily by Machine	$969,800	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Westerly Enterprises, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$951,752	0.2%	Rank history: #30 in FY2021, #95 in FY2022, #80 in FY2024 and not on the FY2025 list; up 21 since FY2022.
75	Cloudburst Security LLC Top NAICS codes 812990 All Other Personal Services	$936,531	0.2%	Rank history: #91 in FY2021, #83 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
76	Goldbelt Incorporated Through CP Marine, LLC Top NAICS codes 541511 Custom Computer Programming Services	$922,684	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #61 in FY2025; new.
77	Aeon Preservation Services, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$898,181	0.2%	Rank history: #56 in FY2021, not on the FY2022 list, not on the FY2024 list and #97 in FY2025; up 32 since FY2022.
78	Tucson Building & Remodeling, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$893,242	0.2%	Rank history: #17 in FY2021, #43 in FY2022, #48 in FY2024 and #60 in FY2025; down 35 since FY2022.
79	Ebsco Information Services, LLC Top NAICS codes 541511 Custom Computer Programming Services 513210 Software Publishers	$873,288	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and #89 in FY2025; new.
80	Omega Belt Built Joint Venture, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$849,013	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Integrated Conservation Resources Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$844,352	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 272 since FY2022.
82	Verizon Communications Inc. 4 awardees, including Verizon Business Network Services LLC, Cellco Partnership and Verizon Washington, DC Inc. Top NAICS codes 517311 Wired Telecommunications Carriers 541519 Other Computer Related Services 517111 Wired Telecommunications Carriers	$840,500	0.2%	Rank history: not on the FY2021 list, #89 in FY2022, #84 in FY2024 and not on the FY2025 list; up 7 since FY2022.
83	Heartwood Pacific, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$838,797	0.2%	Rank history: not on the FY2021 list, #22 in FY2022 and not on the FY2024–FY2025 lists; down 61 since FY2022.
84	Insight Public Sector Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$833,914	0.2%	Rank history: #98 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 22 since FY2022.
85	Meltech Corporation, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$801,473	0.2%	Rank history: #40 in FY2021, not on the FY2022 list, #37 in FY2024 and not on the FY2025 list; returned.
86	GHD Inc. Top NAICS codes 541330 Engineering Services	$795,939	0.2%	Rank history: not on the FY2021 list, #82 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
87	Coalfire Systems, Inc. Through Veris Group, LLC Top NAICS codes 812990 All Other Personal Services	$794,739	0.2%	Rank history: #69 in FY2021, #78 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
88	Samuel Anderson Architects Top NAICS codes 541310 Architectural Services	$775,659	0.2%	Rank history: #54 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 26 since FY2022.
89	Servicenow, Inc. Top NAICS codes 541519 Other Computer Related Services	$749,147	0.2%	Rank history: #84 in FY2021, #86 in FY2022, #89 in FY2024 and #93 in FY2025; down 3 since FY2022.
90	Thomas A Carcaterra Pe LLC Top NAICS codes 541350 Building Inspection Services 541330 Engineering Services	$748,589	0.2%	Rank history: not on the FY2021 list, #94 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
91	At&T Inc. 2 awardees, including Att Mobility LLC Top NAICS codes 541519 Other Computer Related Services 517122 Agents for Wireless Telecommunications Services	$748,420	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 366 since FY2022.
92	Washington Suburban Sanitary Commission Top NAICS codes 221310 Water Supply and Irrigation Systems	$746,000	0.2%	Rank history: #100 in FY2021, #98 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
93	Interactive Strategies LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$733,950	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Burns Wald-Hopkins Shambach Architects, Inc. Top NAICS codes 541310 Architectural Services	$702,933	0.1%	Rank history: #88 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.
95	Tilt Up Construction, Inc. Top NAICS codes 541310 Architectural Services	$691,342	0.1%	Rank history: #58 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 61 since FY2022.
96	Promark Technology Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$689,506	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Kpmg L.L.P. 2 awardees Top NAICS codes 541211 Offices of Certified Public Accountants	$674,317	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 239 since FY2022.
98	WB Waste Solutions, LLC Top NAICS codes 562111 Solid Waste Collection	$658,551	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	Hawaii Electric Light Company Inc. Top NAICS codes 221112 Fossil Fuel Electric Power Generation	$654,000	0.1%	Rank history: #82 in FY2021, #80 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
100	Sei Inc. Top NAICS codes 541618 Other Management Consulting Services	$638,880	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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 $489 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