Top 100 National Gallery of Art Contractors, FY2021

Name: Top 100 National Gallery of Art Contractors, FY2021
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Agency page on GovTribe

The top 10 won 51% of FY2021 National Gallery of Art contract dollars

Contract obligations: $37,071,699 Net of deobligations, by the National Gallery of Art and its offices
Contractors: 228 Parent companies with an obligation
Largest contractor: Grunley Construction Co., Inc. $9.64 million, 25.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Grunley Construction Co., Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$9,640,492	25.4%	Rank history: #5 in FY2022, #10 in FY2023, #7 in FY2024 and not on the FY2025 list; unchanged since FY2020.
2	Hartman-Cox Architects LLP Top NAICS codes 541310 Architectural Services	$2,683,487	7.1%	Rank history: #8 in FY2022, #21 in FY2023, #53 in FY2024 and #72 in FY2025; up 2 since FY2020.
3	Beyer Blinder Belle, Architects and Planners, LLP 2 awardees Top NAICS codes 541310 Architectural Services	$1,352,187	3.6%	Rank history: #20 in FY2022, #5 in FY2023, #13 in FY2024 and not on the FY2025 list; up 72 since FY2020.
4	Belcan Corporation Through Belcan Government Solutions, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,194,853	3.1%	Rank history: #4 in FY2022, #6 in FY2023, #18 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
5	Lincoln Project Management & Consulting - A Bella Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,074,837	2.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
6	Belcan Government Solutions, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$866,711	2.3%	Rank history: not on the FY2022–FY2023 lists, #8 in FY2024 and not on the FY2025 list; down 1 since FY2020.
7	TK Elevator Corporation 2 awardees, including Thyssenkrupp Elevator Corporation Top NAICS codes 238990 All Other Specialty Trade Contractors 238290 Other Building Equipment Contractors	$700,101	1.8%	Rank history: #7 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
8	Service Mechanical Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$673,628	1.8%	Rank history: #19 in FY2022, #17 in FY2023, #19 in FY2024 and #13 in FY2025; up 4 since FY2020.
9	Intellipoint Consulting, Inc. Top NAICS codes 541618 Other Management Consulting Services	$620,578	1.6%	Rank history: #29 in FY2022, #8 in FY2023, #5 in FY2024 and #7 in FY2025; up 8 since FY2020.
10	Phalcon Ltd. Through JE Richards Inc. Top NAICS codes 541330 Engineering Services 238210 Electrical Contractors and Other Wiring Installation Contractors	$570,296	1.5%	Rank history: #23 in FY2022, #50 in FY2023, #41 in FY2024 and not on the FY2025 list; up 40 since FY2020.
11	Verizon Communications Inc. 4 awardees, including Verizon Federal Inc., Cellco Partnership and MCI Communications Services LLC Top NAICS codes 517919 All Other Telecommunications 541519 Other Computer Related Services 517110 Wired Telecommunications Carriers	$545,468	1.4%	Rank history: #16 in FY2022, #18 in FY2023, #59 in FY2024 and not on the FY2025 list; up 16 since FY2020.
12	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$517,131	1.4%	Rank history: #13 in FY2022, not on the FY2023–FY2024 lists and #58 in FY2025; up 4 since FY2020.
13	Thimble Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$508,823	1.3%	Rank history: not on the FY2022 list, #32 in FY2023, #36 in FY2024 and #21 in FY2025; up 11 since FY2020.
14	MDC Partners Inc. Through Redscout LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$498,500	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing	$484,276	1.3%	Rank history: #10 in FY2022, #15 in FY2023, #11 in FY2024 and #10 in FY2025; down 9 since FY2020.
16	Ameresco Inc. Through Ameresco Federal Solutions, Inc. Top NAICS codes 541330 Engineering Services	$479,618	1.3%	Rank history: not on the FY2022–FY2025 lists; up 88 since FY2020.
17	Lorton Stone, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$451,054	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
18	Amazon.com, Inc. Through Amazon Web Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$434,000	1.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
19	Seibold Security Inc. Top NAICS codes 541330 Engineering Services 561621 Security Systems Services (except Locksmiths)	$433,514	1.1%	Rank history: #17 in FY2022, #36 in FY2023, #40 in FY2024 and #27 in FY2025; up 53 since FY2020.
20	Markon LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$424,193	1.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	PC Connection Inc. Through Govconnection Inc. Top NAICS codes 541519 Other Computer Related Services	$397,511	1.0%	Rank history: #66 in FY2022, #74 in FY2023 and not on the FY2024–FY2025 lists; up 81 since FY2020.
22	Bruker Corporation 3 awardees, including Bruker AXS LLC, Bruker Handheld LLC and Bruker Scientific LLC Top NAICS codes 334516 Analytical Laboratory Instrument Manufacturing	$396,127	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Gale Associates, Inc. Top NAICS codes 541310 Architectural Services	$379,038	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	AES Electrical, LLC Top NAICS codes 541330 Engineering Services	$337,490	0.9%	Rank history: #3 in FY2022, #2 in FY2023, #9 in FY2024 and #12 in FY2025; up 12 since FY2020.
25	Dell Federal Systems L.P. 2 awardees, including Dell Marketing L.P. Top NAICS codes 334111 Electronic Computer Manufacturing 511210 Software Publishers	$326,576	0.9%	Rank history: #22 in FY2022, #7 in FY2023, #100 in FY2024 and not on the FY2025 list; down 14 since FY2020.
26	AECOM Through URS Group, Inc. Top NAICS codes 541310 Architectural Services	$299,071	0.8%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
27	Davis Memorial Goodwill Industries Top NAICS codes 561210 Facilities Support Services	$285,623	0.8%	Rank history: #27 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
28	Korn / Ferry International Through Sensa Solutions, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$280,000	0.7%	Rank history: #49 in FY2022, #61 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
29	H.i.g. Capital Management Inc. Through Iron Bow Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$274,582	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	R2I Holdings LLC Top NAICS codes 541511 Custom Computer Programming Services	$271,000	0.7%	Rank history: #9 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2020.
31	American Uniform Sales, Inc. Top NAICS codes 315990 Apparel Accessories and Other Apparel Manufacturing	$263,200	0.7%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 86 since FY2020.
32	Hire One Personnel Services of Washington, D.c. LLC Top NAICS codes 561320 Temporary Help Services	$252,080	0.7%	Rank history: #55 in FY2022, #55 in FY2023, #57 in FY2024 and #81 in FY2025; down 3 since FY2020.
33	Canon Inc. Through Canon U.s.a., Inc. Top NAICS codes 333316 Photographic and Photocopying Equipment Manufacturing	$251,000	0.7%	Rank history: #61 in FY2022, #22 in FY2023, #29 in FY2024 and not on the FY2025 list; down 10 since FY2020.
34	Nichols Contracting, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$241,685	0.6%	Rank history: #40 in FY2022, #4 in FY2023, not on the FY2024 list and #28 in FY2025; down 31 since FY2020.
35	SGI Global LLC Top NAICS codes 611699 All Other Miscellaneous Schools and Instruction	$238,000	0.6%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
36	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services	$237,658	0.6%	Rank history: #18 in FY2022, #42 in FY2023, #25 in FY2024 and #26 in FY2025; up 18 since FY2020.
37	Consigli Holdings Inc. Through Consigli Construction Co., Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$237,327	0.6%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
38	Associated Builders, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$226,910	0.6%	Rank history: #24 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2020.
39	Levin Professional Services Inc. Top NAICS codes 334290 Other Communications Equipment Manufacturing	$224,876	0.6%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
40	Fcn, Inc. Top NAICS codes 511210 Software Publishers	$220,000	0.6%	Rank history: #28 in FY2022, #47 in FY2023, #21 in FY2024 and #48 in FY2025; new, not ranked in FY2020.
41	Distributed Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$211,041	0.6%	Rank history: #62 in FY2022, #70 in FY2023, #43 in FY2024 and #70 in FY2025; new, not ranked in FY2020.
42	William H. Walston Co Top NAICS codes 238320 Painting and Wall Covering Contractors	$187,300	0.5%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
43	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$178,772	0.5%	Rank history: #26 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
44	SAP America Inc Through Concur Technologies, Inc. Top NAICS codes 481111 Scheduled Passenger Air Transportation	$152,808	0.4%	Rank history: #34 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; up 37 since FY2020.
45	Wavedancer Inc. Top NAICS codes 511210 Software Publishers	$152,549	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Ernest Maier Inc. Top NAICS codes 327420 Gypsum Product Manufacturing	$150,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Digital Transitions Inc. Top NAICS codes 423410 Photographic Equipment and Supplies Merchant Wholesalers	$147,518	0.4%	Rank history: #50 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
48	Cintas Corporation Through Cintas Corporation NO. 2 Top NAICS codes 448190 Other Clothing Stores	$144,900	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Evolv Technologies Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$139,800	0.4%	Rank history: #54 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; down 23 since FY2020.
50	DLT Solutions LLC Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services 511210 Software Publishers	$136,871	0.4%	Rank history: not on the FY2022 list, #11 in FY2023, #16 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
51	Cambridge Information Group Inc. Through Ex Libris USA Inc. Top NAICS codes 511210 Software Publishers	$129,042	0.3%	Rank history: not on the FY2022 list, #62 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
52	American Pest Management Inc. Top NAICS codes 561710 Exterminating and Pest Control Services	$125,557	0.3%	Rank history: #52 in FY2022, #54 in FY2023, #71 in FY2024 and #65 in FY2025; up 14 since FY2020.
53	Ashburn Consulting LLC Top NAICS codes 541512 Computer Systems Design Services	$123,980	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Onyx Technical Services, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541513 Computer Facilities Management Services	$121,234	0.3%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
55	Potomac Electrical Services, LLC Top NAICS codes 541380 Testing Laboratories and Services	$120,505	0.3%	Rank history: not on the FY2022 list, #44 in FY2023, #35 in FY2024 and #54 in FY2025; up 16 since FY2020.
56	International Chemstar Incorporated Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$117,181	0.3%	Rank history: #76 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
57	Arrow Electronics, Inc. 2 awardees, including EC America, Inc. and Immixtechnology Inc. Top NAICS codes 443120 Computer and Software Stores 541519 Other Computer Related Services	$116,927	0.3%	Rank history: not on the FY2022 list, #96 in FY2023, #84 in FY2024 and not on the FY2025 list; down 35 since FY2020.
58	Crane Rental Company, Inc. Top NAICS codes 237990 Other Heavy and Civil Engineering Construction 238990 All Other Specialty Trade Contractors	$115,970	0.3%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 50 since FY2020.
59	Lawrence Street Industry, LLC Top NAICS codes 562119 Other Waste Collection	$113,110	0.3%	Rank history: #45 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; down 31 since FY2020.
60	W.e. Bowers, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$109,395	0.3%	Rank history: #33 in FY2022, #20 in FY2023, #96 in FY2024 and not on the FY2025 list; up 39 since FY2020.
61	Scaffold Resource, LLC Top NAICS codes 238990 All Other Specialty Trade Contractors	$107,436	0.3%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; down 46 since FY2020.
62	CTG Federal, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$98,300	0.3%	Rank history: #77 in FY2022, #65 in FY2023, #87 in FY2024 and #46 in FY2025; new, not ranked in FY2020.
63	Quinn Evans Architects Inc. Top NAICS codes 541310 Architectural Services	$96,517	0.3%	Rank history: #21 in FY2022, #16 in FY2023, #2 in FY2024 and #4 in FY2025; down 49 since FY2020.
64	Foster & Freeman USA Inc. Top NAICS codes 333314 Optical Instrument and Lens Manufacturing	$92,486	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Netxposure LLC Top NAICS codes 519120 Libraries and Archives	$92,347	0.2%	Rank history: #37 in FY2022, #73 in FY2023, #67 in FY2024 and #75 in FY2025; down 4 since FY2020.
66	CDW Corporation Through CDW Government LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$92,163	0.2%	Rank history: #57 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
67	Patuxent Engineering Group LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$87,000	0.2%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; down 47 since FY2020.
68	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services	$86,969	0.2%	Rank history: #79 in FY2022, #83 in FY2023, not on the FY2024 list and #79 in FY2025; up 12 since FY2020.
69	Banner Staffing LLC Top NAICS codes 561320 Temporary Help Services	$86,500	0.2%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; down 18 since FY2020.
70	O'brien Business Systems, Inc. Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing 561440 Collection Agencies 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$86,195	0.2%	Rank history: #42 in FY2022, #3 in FY2023, #78 in FY2024 and #39 in FY2025; new, not ranked in FY2020.
71	Wise Care Counts LLC Top NAICS codes 541612 Human Resources Consulting Services	$85,278	0.2%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
72	Earle Kinlaw & Associates, Inc. Top NAICS codes 333924 Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing	$82,396	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Convergeone Inc. Top NAICS codes 811213 Communication Equipment Repair and Maintenance	$82,310	0.2%	Rank history: not on the FY2022–FY2025 lists; down 43 since FY2020.
74	Dexibit Inc. Top NAICS codes 511210 Software Publishers	$81,880	0.2%	Rank history: #82 in FY2022, #91 in FY2023, #98 in FY2024 and not on the FY2025 list; down 22 since FY2020.
75	OSI Systems Inc. Through Rapiscan Systems Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$78,235	0.2%	Rank history: #81 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
76	Equinix, Inc. Top NAICS codes 541519 Other Computer Related Services	$75,535	0.2%	Rank history: #38 in FY2022, #31 in FY2023, #37 in FY2024 and #33 in FY2025; new, not ranked in FY2020.
77	Cross Henry Top NAICS codes 561320 Temporary Help Services 712110 Museums	$72,138	0.2%	Rank history: #30 in FY2022, not on the FY2023 list, #39 in FY2024 and not on the FY2025 list; up 20 since FY2020.
78	Mindcubed LLC Top NAICS codes 541511 Custom Computer Programming Services	$71,835	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	EBC Carpet Services Corp Top NAICS codes 561740 Carpet and Upholstery Cleaning Services	$63,405	0.2%	Rank history: not on the FY2022 list, #97 in FY2023 and not on the FY2024–FY2025 lists; down 32 since FY2020.
80	David Joseph Easterbrook Ltd Top NAICS codes 333922 Conveyor and Conveying Equipment Manufacturing	$62,497	0.2%	Rank history: #41 in FY2022, not on the FY2023 list, #42 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
81	Trimble Inc. Through E-Builder, Inc. Top NAICS codes 541519 Other Computer Related Services	$62,192	0.2%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
82	Sirius Computer Solutions, LLC Through Sirius Federal LLC Top NAICS codes 541519 Other Computer Related Services	$61,155	0.2%	Rank history: not on the FY2022–FY2025 lists; down 37 since FY2020.
83	Conference Technologies, Inc. Top NAICS codes 334290 Other Communications Equipment Manufacturing	$60,861	0.2%	Rank history: not on the FY2022–FY2025 lists; up 57 since FY2020.
84	Forum One Communications Corp Top NAICS codes 541519 Other Computer Related Services	$59,860	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Federal Radio Service Top NAICS codes 811213 Communication Equipment Repair and Maintenance	$59,277	0.2%	Rank history: #86 in FY2022, not on the FY2023–FY2024 lists and #85 in FY2025; up 8 since FY2020.
86	C & C Cleaners Inc. Top NAICS codes 812320 Drycleaning and Laundry Services (except Coin-Operated)	$57,680	0.2%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
87	B3 Enterprises LLC Top NAICS codes 922160 Fire Protection	$54,371	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Amazon Web Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$54,200	0.1%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
89	Bravo Consulting Group, LLC Top NAICS codes 541511 Custom Computer Programming Services	$53,985	0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
90	Accent Designs LLC Top NAICS codes 337920 Blind and Shade Manufacturing	$51,220	0.1%	Rank history: not on the FY2022–FY2024 lists and #96 in FY2025; up 42 since FY2020.
91	Softek International Inc. Top NAICS codes 511210 Software Publishers	$50,625	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
92	RCN Telecom Services, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$50,110	0.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
93	Key App Resources LLC Top NAICS codes 541511 Custom Computer Programming Services	$50,000	0.1%	Rank history: #43 in FY2022, #67 in FY2023, #68 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
94	PCG Enterprises, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$50,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Prime Access Consulting, Inc. Top NAICS codes 541512 Computer Systems Design Services	$50,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	TBS Facility Services Group LLC Top NAICS codes 484210 Used Household and Office Goods Moving	$46,939	0.1%	Rank history: #47 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
97	Show Sage LLC Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$45,550	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Albireo Energy LLC Through Energy Systems Technologies, Inc. Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$43,612	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Federal Resources Corporation Top NAICS codes 541519 Other Computer Related Services	$42,319	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	SHI International Corp Top NAICS codes 541519 Other Computer Related Services	$42,262	0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; down 31 since FY2020.

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100 of 228 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $38 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 National Gallery of Art contractors in FY2021?

1. Grunley Construction Co., Inc. ($9.64M), 2. Hartman-Cox Architects LLP ($2.68M), 3. Beyer Blinder Belle, Architects and Planners, LLP ($1.35M), 4. Belcan Corporation ($1.19M), 5. Lincoln Project Management & Consulting - A Bella Inc. ($1.07M), 6. Belcan Government Solutions, Inc. ($867K), 7. TK Elevator Corporation ($700K), 8. Service Mechanical Inc. ($674K), 9. Intellipoint Consulting, Inc. ($621K), 10. Phalcon Ltd. ($570K).

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