Top 100 Defense Information Systems Agency Contractors, Jul 2025–Jun 2026

Name: Top 100 Defense Information Systems Agency Contractors, Jul 2025–Jun 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Agency page on GovTribe

The top 10 won 45% of Defense Information Systems Agency contract dollars from July 2025 through June 2026

Contract obligations: $4,565,995,958 Net of deobligations, by the Defense Information Systems Agency and its offices
Contractors: 550 Parent companies with an obligation
Largest contractor: Leidos Holdings, Inc. $744 million, 15.2% of obligations
Data as of: Oct 19, 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	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc. Top NAICS codes 541513 Computer Facilities Management Services 541512 Computer Systems Design Services	$744,051,624	15.2%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Space Exploration Technologies Corp. Top NAICS codes 517410 Satellite Telecommunications 541330 Engineering Services	$275,416,079	5.6%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023, #3 in FY2024 and #3 in FY2025; up 1 since Jul 2024–Jun 2025.
3	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. and Riverside Engineering LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$266,114,243	5.4%	Rank history: #4 in FY2021, #5 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
4	Lumen Technologies Government Solutions, Inc. 2 awardees Top NAICS codes 517110 Wired Telecommunications Carriers	$207,488,647	4.2%	Rank history: #21 in FY2021, not on the FY2022–FY2023 lists, #48 in FY2024 and #4 in FY2025; up 17 since Jul 2024–Jun 2025.
5	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$169,604,292	3.5%	Rank history: #2 in FY2021, #2 in FY2022, #5 in FY2023, #4 in FY2024 and #5 in FY2025; down 1 since Jul 2024–Jun 2025.
6	AOC Connect, LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517111 Wired Telecommunications Carriers	$121,822,884	2.5%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; up 282 since Jul 2024–Jun 2025.
7	Microsoft Corporation 2 awardees Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$113,907,017	2.3%	Rank history: #24 in FY2021, #10 in FY2022, #14 in FY2023, #7 in FY2024 and #6 in FY2025; down 2 since Jul 2024–Jun 2025.
8	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 513210 Software Publishers 541519 Other Computer Related Services	$111,145,211	2.3%	Rank history: #7 in FY2021, #7 in FY2022, #10 in FY2023, #8 in FY2024 and #10 in FY2025; unchanged since Jul 2024–Jun 2025.
9	Verizon 11 awardees, including Verizon Business Network Services LLC, Verizon Deutschland GMBH and Cellco Partnership Top NAICS codes 517110 Wired Telecommunications Carriers 517111 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite)	$105,554,647	2.2%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #13 in FY2025; up 9 since Jul 2024–Jun 2025.
10	Iron Bow Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$99,012,255	2.0%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #9 in FY2025; down 4 since Jul 2024–Jun 2025.
11	By Light Professional It Services LLC Top NAICS codes 541519 Other Computer Related Services 517110 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers	$97,116,812	2.0%	Rank history: #5 in FY2021, #12 in FY2022, #34 in FY2023, #9 in FY2024 and #14 in FY2025; down 1 since Jul 2024–Jun 2025.
12	Peraton Inc. 3 awardees, including Knight Point Systems, LLC and Peraton Enterprise Solutions LLC Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services 541511 Custom Computer Programming Services	$94,473,459	1.9%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #8 in FY2025; up 5 since Jul 2024–Jun 2025.
13	Science Applications International Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$73,325,363	1.5%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; down 2 since Jul 2024–Jun 2025.
14	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$68,270,031	1.4%	Rank history: #41 in FY2021, #39 in FY2022, #21 in FY2023, #18 in FY2024 and #16 in FY2025; down 2 since Jul 2024–Jun 2025.
15	Viasat Inc. Top NAICS codes 334290 Other Communications Equipment Manufacturing 517410 Satellite Telecommunications 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$62,167,430	1.3%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023, #37 in FY2024 and not on the FY2025 list; up 42 since Jul 2024–Jun 2025.
16	Dell Technologies Inc. 2 awardees, including Dell Federal Systems L.P and Dell Marketing L.P. Top NAICS codes 511210 Software Publishers 513210 Software Publishers	$60,863,901	1.2%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #21 in FY2025; up 4 since Jul 2024–Jun 2025.
17	Madian It Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$54,091,740	1.1%	Rank history: not on the FY2021–FY2023 lists, #67 in FY2024 and #26 in FY2025; up 33 since Jul 2024–Jun 2025.
18	Agile Defense, LLC Top NAICS codes 541380 Testing Laboratories and Services	$53,748,897	1.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #20 in FY2025; up 5 since Jul 2024–Jun 2025.
19	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$51,537,631	1.1%	Rank history: #51 in FY2021, #23 in FY2022, #23 in FY2023, #17 in FY2024 and #17 in FY2025; down 6 since Jul 2024–Jun 2025.
20	Hewlett Packard Enterprise Company 2 awardees Top NAICS codes 541519 Other Computer Related Services	$50,388,341	1.0%	Rank history: #15 in FY2021, #8 in FY2022, #9 in FY2023, #15 in FY2024 and #19 in FY2025; down 5 since Jul 2024–Jun 2025.
21	Empower AI, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$49,657,470	1.0%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and #15 in FY2025; down 7 since Jul 2024–Jun 2025.
22	Northrop Grumman Systems Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services 511210 Software Publishers 513210 Software Publishers	$49,586,681	1.0%	Rank history: #18 in FY2021, #46 in FY2022, not on the FY2023 list, #38 in FY2024 and #25 in FY2025; up 19 since Jul 2024–Jun 2025.
23	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$47,110,059	1.0%	Rank history: #56 in FY2021, #83 in FY2022, #72 in FY2023, #27 in FY2024 and #46 in FY2025; up 3 since Jul 2024–Jun 2025.
24	Deloitte Through Deloitte Consulting LLP Top NAICS codes 541219 Other Accounting Services 541512 Computer Systems Design Services	$39,034,688	0.8%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #22 in FY2025; up 1 since Jul 2024–Jun 2025.
25	FCN, Inc. Top NAICS codes 541519 Other Computer Related Services	$38,828,089	0.8%	Rank history: not on the FY2021 list, #25 in FY2022, #31 in FY2023, #12 in FY2024 and #31 in FY2025; up 10 since Jul 2024–Jun 2025.
26	Validatek-Citi, LLC Top NAICS codes 541512 Computer Systems Design Services	$37,694,554	0.8%	Rank history: #46 in FY2021, #29 in FY2022, #29 in FY2023, #34 in FY2024 and #27 in FY2025; up 6 since Jul 2024–Jun 2025.
27	Minburn Technology Group, LLC Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$37,270,203	0.8%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023, #10 in FY2024 and #18 in FY2025; down 8 since Jul 2024–Jun 2025.
28	Competitive Range Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$36,247,436	0.7%	Rank history: #71 in FY2021, #17 in FY2022, #15 in FY2023, #22 in FY2024 and #23 in FY2025; down 6 since Jul 2024–Jun 2025.
29	Palantir Technologies Inc. Through Palantir USG Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$33,515,768	0.7%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #85 in FY2024 and #29 in FY2025; up 27 since Jul 2024–Jun 2025.
30	Integrated Computer Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$30,431,269	0.6%	Rank history: #83 in FY2021, #97 in FY2022, #68 in FY2023, #35 in FY2024 and #30 in FY2025; up 6 since Jul 2024–Jun 2025.
31	Sos International LLC Top NAICS codes 541512 Computer Systems Design Services	$29,765,728	0.6%	Rank history: #14 in FY2021, #11 in FY2022, #32 in FY2023, #24 in FY2024 and #28 in FY2025; down 7 since Jul 2024–Jun 2025.
32	Oracle Health Government Services Inc. Through Oracle America, Inc. Top NAICS codes 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$29,307,337	0.6%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #56 in FY2025; up 17 since Jul 2024–Jun 2025.
33	Everfox LLC Top NAICS codes 611420 Computer Training 541519 Other Computer Related Services	$27,720,751	0.6%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; up 1 since Jul 2024–Jun 2025.
34	Compqsoft, Inc. Top NAICS codes 541519 Other Computer Related Services	$25,506,152	0.5%	Rank history: #68 in FY2021, #45 in FY2022, #37 in FY2023, #36 in FY2024 and #37 in FY2025; down 3 since Jul 2024–Jun 2025.
35	RTX Corporation 4 awardees, including Raytheon Company Top NAICS codes 811213 Communication Equipment Repair and Maintenance 541330 Engineering Services	$25,132,497	0.5%	Rank history: #40 in FY2021, #76 in FY2022, #27 in FY2023, #30 in FY2024 and #43 in FY2025; up 13 since Jul 2024–Jun 2025.
36	Iridium Satellite LLC 2 awardees Top NAICS codes 517410 Satellite Telecommunications	$22,785,460	0.5%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #39 in FY2025; up 25 since Jul 2024–Jun 2025.
37	Level 3 Communications, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$22,681,320	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	CA Inc. Top NAICS codes 513210 Software Publishers	$22,168,426	0.5%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #41 in FY2025; unchanged since Jul 2024–Jun 2025.
39	Cubic Digital Intelligence Inc. Top NAICS codes 541512 Computer Systems Design Services	$21,535,935	0.4%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #42 in FY2025; up 13 since Jul 2024–Jun 2025.
40	Alvarez LLC Top NAICS codes 541519 Other Computer Related Services	$21,275,059	0.4%	Rank history: #91 in FY2021, #19 in FY2022, #70 in FY2023, not on the FY2024 list and #35 in FY2025; up 207 since Jul 2024–Jun 2025.
41	Enterprise Resource Planning International, LLC Top NAICS codes 541512 Computer Systems Design Services	$19,981,346	0.4%	Rank history: #97 in FY2021, #81 in FY2022, #78 in FY2023, #56 in FY2024 and #33 in FY2025; up 2 since Jul 2024–Jun 2025.
42	Business Computers Management Consulting Group (Bcmc) LLC Top NAICS codes 541512 Computer Systems Design Services	$19,703,229	0.4%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, #52 in FY2024 and #45 in FY2025; unchanged since Jul 2024–Jun 2025.
43	August Schell Enterprises, Inc. Top NAICS codes 541519 Other Computer Related Services	$18,121,781	0.4%	Rank history: #36 in FY2021, #18 in FY2022, #20 in FY2023, #14 in FY2024 and #24 in FY2025; down 27 since Jul 2024–Jun 2025.
44	Hunter Strategy, LLC Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$16,740,862	0.3%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 15 since Jul 2024–Jun 2025.
45	T-Mobile Secure Federal Operations LLC Top NAICS codes 517111 Wired Telecommunications Carriers	$16,375,186	0.3%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #47 in FY2025; up 13 since Jul 2024–Jun 2025.
46	Sigma Defense Systems LLC Top NAICS codes 541330 Engineering Services 334290 Other Communications Equipment Manufacturing	$15,334,023	0.3%	Rank history: #86 in FY2021, #65 in FY2022, #36 in FY2023, #32 in FY2024 and #44 in FY2025; down 13 since Jul 2024–Jun 2025.
47	Dynamic Systems Inc. Top NAICS codes 541519 Other Computer Related Services	$14,837,481	0.3%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; up 88 since Jul 2024–Jun 2025.
48	M.c. Dean, Inc. Top NAICS codes 541330 Engineering Services 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing	$14,047,507	0.3%	Rank history: not on the FY2021 list, #89 in FY2022, not on the FY2023–FY2024 lists and #86 in FY2025; up 41 since Jul 2024–Jun 2025.
49	At&T Inc. 5 awardees, including Att Mobility LLC and Directv, LLC Top NAICS codes 517112 Wireless Telecommunications Carriers (except Satellite) 517312 Wireless Telecommunications Carriers (except Satellite) 517410 Satellite Telecommunications	$14,018,792	0.3%	Rank history: #42 in FY2021, #26 in FY2022, #17 in FY2023, #59 in FY2024 and #36 in FY2025; up 82 since Jul 2024–Jun 2025.
50	DDC It Services LLC Top NAICS codes 541512 Computer Systems Design Services	$14,013,760	0.3%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and not on the FY2025 list; up 16 since Jul 2024–Jun 2025.
51	DH Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$13,876,909	0.3%	Rank history: #58 in FY2021, #95 in FY2022, #62 in FY2023, #76 in FY2024 and #61 in FY2025; up 20 since Jul 2024–Jun 2025.
52	Accelgov LLC Top NAICS codes 541519 Other Computer Related Services	$13,431,996	0.3%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 138 since Jul 2024–Jun 2025.
53	Defense Solutions Group LLC Top NAICS codes 541519 Other Computer Related Services	$13,385,422	0.3%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 102 since Jul 2024–Jun 2025.
54	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$13,067,385	0.3%	Rank history: #85 in FY2021, not on the FY2022–FY2023 lists, #65 in FY2024 and #54 in FY2025; up 16 since Jul 2024–Jun 2025.
55	Guidehouse Inc. 4 awardees, including Peraton Enterprise Solutions LLC, Peraton Inc. and Peraton Services & Solutions Inc. Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$12,637,800	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	British Telecommunications Public Limited Company 2 awardees, including 22Nd Century Networks, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers 517111 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers	$12,120,550	0.2%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
57	Oran Inc. Top NAICS codes 541511 Custom Computer Programming Services	$11,220,245	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	Crest Security Assurance LLC Top NAICS codes 541519 Other Computer Related Services	$11,185,661	0.2%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 99 since Jul 2024–Jun 2025.
59	International Business Machines Corporation 3 awardees Top NAICS codes 541511 Custom Computer Programming Services	$11,141,471	0.2%	Rank history: #6 in FY2021, #96 in FY2022, #67 in FY2023, not on the FY2024 list and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	Foxhole Technology LLC Top NAICS codes 611420 Computer Training	$11,117,319	0.2%	Rank history: #62 in FY2021, #74 in FY2022, #56 in FY2023, #80 in FY2024 and #76 in FY2025; up 23 since Jul 2024–Jun 2025.
61	Riverside Engineering LLC Top NAICS codes 541512 Computer Systems Design Services	$11,037,968	0.2%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 6 since Jul 2024–Jun 2025.
62	Sterling Computers Corporation Top NAICS codes 541519 Other Computer Related Services	$10,897,001	0.2%	Rank history: not on the FY2021 list, #71 in FY2022, #61 in FY2023, #73 in FY2024 and #69 in FY2025; up 6 since Jul 2024–Jun 2025.
63	SHR Consulting Group LLC Top NAICS codes 541511 Custom Computer Programming Services	$10,677,888	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
64	Federal Data Systems LLC Through Feddata Technology Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$10,583,686	0.2%	Rank history: not on the FY2021–FY2025 lists; up 37 since Jul 2024–Jun 2025.
65	Appian Corporation Top NAICS codes 541512 Computer Systems Design Services	$10,423,020	0.2%	Rank history: #77 in FY2021, #79 in FY2022, #97 in FY2023, #90 in FY2024 and #87 in FY2025; up 23 since Jul 2024–Jun 2025.
66	Expression Networks LLC Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services 541330 Engineering Services	$10,105,130	0.2%	Rank history: #49 in FY2021, #57 in FY2022, #39 in FY2023, #61 in FY2024 and #50 in FY2025; down 26 since Jul 2024–Jun 2025.
67	Kpmg LLP Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$10,061,794	0.2%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #89 in FY2025; up 18 since Jul 2024–Jun 2025.
68	Norseman Inc. Top NAICS codes 541519 Other Computer Related Services	$9,233,002	0.2%	Rank history: #16 in FY2021, #34 in FY2022, #50 in FY2023, #57 in FY2024 and #70 in FY2025; down 14 since Jul 2024–Jun 2025.
69	Iridium Government Services LLC Top NAICS codes 517410 Satellite Telecommunications	$9,208,333	0.2%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #12 in FY2025; down 62 since Jul 2024–Jun 2025.
70	Optimal Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$8,766,695	0.2%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #72 in FY2025; up 6 since Jul 2024–Jun 2025.
71	Vae, Inc. Top NAICS codes 541519 Other Computer Related Services	$8,717,512	0.2%	Rank history: #11 in FY2021, #35 in FY2022, #11 in FY2023, #44 in FY2024 and #93 in FY2025; down 24 since Jul 2024–Jun 2025.
72	Standard-Blazar, LLC Top NAICS codes 541519 Other Computer Related Services	$8,517,956	0.2%	Rank history: not on the FY2021 list, #73 in FY2022 and not on the FY2023–FY2025 lists; up 231 since Jul 2024–Jun 2025.
73	Bluestone Logic, LLC Top NAICS codes 541512 Computer Systems Design Services	$8,440,127	0.2%	Rank history: not on the FY2021–FY2025 lists; up 93 since Jul 2024–Jun 2025.
74	Planet Associates, Inc. Top NAICS codes 611420 Computer Training	$8,400,092	0.2%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Ryan Consulting Group Inc. Top NAICS codes 541512 Computer Systems Design Services	$8,325,106	0.2%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #95 in FY2024 and #82 in FY2025; up 9 since Jul 2024–Jun 2025.
76	22Nd Century Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$8,241,761	0.2%	Rank history: #98 in FY2021, #93 in FY2022 and not on the FY2023–FY2025 lists; up 104 since Jul 2024–Jun 2025.
77	Interimage, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$8,199,678	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 38 since Jul 2024–Jun 2025.
78	New Generation Solution LLC Top NAICS codes 541512 Computer Systems Design Services	$8,194,299	0.2%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, not on the FY2024 list and #66 in FY2025; down 3 since Jul 2024–Jun 2025.
79	GTT Global Telecom Government Services, LLC Top NAICS codes 517111 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers 517911 Telecommunications Resellers	$8,106,916	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 2 since Jul 2024–Jun 2025.
80	Amentum Holdings, Inc. 2 awardees, including Amentum Services, Inc. Top NAICS codes 541519 Other Computer Related Services	$7,993,002	0.2%	Rank history: not on the FY2021–FY2025 lists; up 26 since Jul 2024–Jun 2025.
81	Cinteot Inc. Top NAICS codes 541511 Custom Computer Programming Services	$7,943,504	0.2%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 77 since Jul 2024–Jun 2025.
82	Amazon Web Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$7,766,504	0.2%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and not on the FY2025 list; down 36 since Jul 2024–Jun 2025.
83	TM3 Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services	$7,758,109	0.2%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #94 in FY2025; up 34 since Jul 2024–Jun 2025.
84	Innovation Evolution Technologies JV, LLC Top NAICS codes 541512 Computer Systems Design Services	$7,570,567	0.2%	Rank history: not on the FY2021–FY2025 lists; up 40 since Jul 2024–Jun 2025.
85	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services	$7,546,640	0.2%	Rank history: not on the FY2021–FY2025 lists; up 317 since Jul 2024–Jun 2025.
86	E.f. Kearney, Limited Through Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$7,288,285	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 9 since Jul 2024–Jun 2025.
87	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$7,023,251	0.1%	Rank history: #30 in FY2021, #52 in FY2022, not on the FY2023 list, #58 in FY2024 and #78 in FY2025; down 42 since Jul 2024–Jun 2025.
88	Global Broadband Solutions LLC Top NAICS codes 517919 All Other Telecommunications	$6,937,625	0.1%	Rank history: not on the FY2021–FY2025 lists; up 105 since Jul 2024–Jun 2025.
89	Koniag Professional Services, LLC Top NAICS codes 541519 Other Computer Related Services	$6,793,694	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	At&T Technical Services Company, Inc. Top NAICS codes 517111 Wired Telecommunications Carriers	$6,757,101	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; down 10 since Jul 2024–Jun 2025.
91	Washington Business Dynamics, LLC Top NAICS codes 541512 Computer Systems Design Services	$6,742,624	0.1%	Rank history: not on the FY2021–FY2025 lists; up 36 since Jul 2024–Jun 2025.
92	Engenius Consulting Group Inc. Top NAICS codes 541512 Computer Systems Design Services	$6,696,489	0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #71 in FY2023, #60 in FY2024 and #59 in FY2025; down 32 since Jul 2024–Jun 2025.
93	Chickasaw Strategic Pointe, LLC Top NAICS codes 541512 Computer Systems Design Services	$6,669,588	0.1%	Rank history: not on the FY2021–FY2025 lists; up 20 since Jul 2024–Jun 2025.
94	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$6,546,928	0.1%	Rank history: not on the FY2021–FY2025 lists; up 102 since Jul 2024–Jun 2025.
95	North Texas Investors Group, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$6,503,627	0.1%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and not on the FY2025 list; up 9 since Jul 2024–Jun 2025.
96	MSM Technology LLC Top NAICS codes 541512 Computer Systems Design Services	$6,293,121	0.1%	Rank history: not on the FY2021 list, #62 in FY2022, #41 in FY2023, #46 in FY2024 and #71 in FY2025; down 52 since Jul 2024–Jun 2025.
97	Kaiva Tech, LLC Top NAICS codes 541618 Other Management Consulting Services 541611 Administrative Management and General Management Consulting Services	$6,249,806	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 46 since Jul 2024–Jun 2025.
98	Lightgrid LLC Top NAICS codes 541512 Computer Systems Design Services	$6,171,470	0.1%	Rank history: not on the FY2021–FY2025 lists; up 43 since Jul 2024–Jun 2025.
99	Cvtek-Jv, LLC Top NAICS codes 541512 Computer Systems Design Services	$6,117,830	0.1%	Rank history: not on the FY2021–FY2025 lists; up 304 since Jul 2024–Jun 2025.
100	Federal Resources Corporation Top NAICS codes 541519 Other Computer Related Services	$6,080,275	0.1%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023, not on the FY2024 list and #99 in FY2025; unchanged since Jul 2024–Jun 2025.

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100 of 550 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 $4.9 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 Defense Information Systems Agency contractors in Jul 2025–Jun 2026?

1. Leidos Holdings, Inc. ($744M), 2. Space Exploration Technologies Corp. ($275M), 3. Booz Allen Hamilton Holding Corporation ($266M), 4. Lumen Technologies Government Solutions, Inc. ($207M), 5. General Dynamics Corporation ($170M), 6. AOC Connect, LLC ($122M), 7. Microsoft Corporation ($114M), 8. Carahsoft Technology Corp ($111M), 9. Verizon ($106M), 10. Iron Bow Technologies, LLC ($99M).

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