Top 100 Contractors in PSC AJ13: General Science & Technology R&D Services; General Science & Technology; Experimental Development, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC AJ13: General Science & Technology R&D Services; General Science & Technology; Experimental Development, Jul 2025–Jun 2026
Creator: GovTribe

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

The top 10 won 66% of PSC AJ13 contract dollars from July 2025 through June 2026

Contract obligations: $1,008,628,556 Net of deobligations, by contracts coded PSC AJ13
Contractors: 119 Parent companies with an obligation
Largest contractor: Advanced Technology International $159 million, 15.1% of obligations
Data as of: Oct 16, 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	Advanced Technology International Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$158,983,693	15.1%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #19 in FY2025; up 1 since Jul 2024–Jun 2025.
2	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense)	$96,061,116	9.1%	Rank history: #6 in FY2021, #2 in FY2022, #2 in FY2023, #3 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
3	Modern Technology Solutions, Inc. Top agencies OSD (Office of the Secretary of Defense)	$76,670,116	7.3%	Rank history: #3 in FY2021, #5 in FY2022, #4 in FY2023, #8 in FY2024 and #5 in FY2025; up 3 since Jul 2024–Jun 2025.
4	National Security Technology Accelerator Inc. Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$74,632,983	7.1%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #4 in FY2025; down 3 since Jul 2024–Jun 2025.
5	Assurance Technology Corp Top agencies Navy (Department of the Navy)	$63,342,808	6.0%	Rank history: not on the FY2021 list, #3 in FY2022, #3 in FY2023, #5 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
6	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$59,893,002	5.7%	Rank history: #10 in FY2021, #12 in FY2022, #52 in FY2023, #9 in FY2024 and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
7	Columbus Technologies and Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$57,325,528	5.4%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; up 1 since Jul 2024–Jun 2025.
8	Avantus Federal LLC Top agencies OSD (Office of the Secretary of Defense)	$38,448,400	3.7%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #6 in FY2025; up 1 since Jul 2024–Jun 2025.
9	Microsoft Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$35,377,504	3.4%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023, #12 in FY2024 and #10 in FY2025; up 5 since Jul 2024–Jun 2025.
10	Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force)	$32,201,000	3.1%	Rank history: #42 in FY2021, #57 in FY2022, not on the FY2023–FY2024 lists and #8 in FY2025; new, not ranked in Jul 2024–Jun 2025.
11	Battelle Memorial Institute Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Navy (Department of the Navy)	$25,982,821	2.5%	Rank history: #93 in FY2021, #29 in FY2022, #16 in FY2023, #11 in FY2024 and #11 in FY2025; up 1 since Jul 2024–Jun 2025.
12	Systems Planning and Analysis, Inc. Top agencies OSD (Office of the Secretary of Defense)	$23,777,889	2.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
13	Code Metal, Inc. Top agencies USAF (Department of the Air Force)	$17,394,437	1.7%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Rolic Technologies AG Top agencies Treasury (Department of the Treasury)	$15,991,604	1.5%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
15	Applied Research Associates, Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Army (Department of the Army)	$15,589,435	1.5%	Rank history: #92 in FY2021, #9 in FY2022, #6 in FY2023, #7 in FY2024 and #14 in FY2025; down 4 since Jul 2024–Jun 2025.
16	Mnemonics Inc. Top agencies Navy (Department of the Navy)	$11,484,851	1.1%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #18 in FY2024 and #13 in FY2025; up 3 since Jul 2024–Jun 2025.
17	Quantum Space LLC Top agencies OSD (Office of the Secretary of Defense)	$9,200,000	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
18	Amentum Holdings, Inc. 3 awardees, including Amentum Technology, Inc. Top agencies Navy (Department of the Navy)	$8,956,740	0.9%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; up 4 since Jul 2024–Jun 2025.
19	Alaire Technologies Inc. Top agencies Navy (Department of the Navy)	$8,138,751	0.8%	Rank history: #20 in FY2021, #25 in FY2022, #35 in FY2023, #34 in FY2024 and #23 in FY2025; up 5 since Jul 2024–Jun 2025.
20	Red Six Aerospace Inc. Top agencies USAF (Department of the Air Force)	$7,895,131	0.8%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	Neany Inc. Top agencies Army (Department of the Army)	$6,551,108	0.6%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2023, #4 in FY2024 and #12 in FY2025; down 16 since Jul 2024–Jun 2025.
22	Huntington Ingalls Industries, Inc. Through HII Technical Solutions Corporation Top agencies Navy (Department of the Navy)	$6,459,414	0.6%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023, #16 in FY2024 and #25 in FY2025; up 6 since Jul 2024–Jun 2025.
23	Envisioneering Inc. Top agencies Navy (Department of the Navy)	$5,755,404	0.5%	Rank history: not on the FY2021 list, #20 in FY2022, #15 in FY2023, #29 in FY2024 and #32 in FY2025; up 3 since Jul 2024–Jun 2025.
24	KBR Wyle Services LLC Top agencies Navy (Department of the Navy)	$5,613,808	0.5%	Rank history: not on the FY2021 list, #27 in FY2022, not on the FY2023 list, #14 in FY2024 and #22 in FY2025; down 7 since Jul 2024–Jun 2025.
25	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies Army (Department of the Army)	$5,241,836	0.5%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; down 2 since Jul 2024–Jun 2025.
26	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies DHA (Defense Health Agency)	$5,184,308	0.5%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
27	Tekla Research, Inc. Top agencies Navy (Department of the Navy)	$4,994,331	0.5%	Rank history: #18 in FY2021, #34 in FY2022, #23 in FY2023, #25 in FY2024 and #27 in FY2025; down 6 since Jul 2024–Jun 2025.
28	Aim Intelligent Machines, Inc. Top agencies USAF (Department of the Air Force)	$4,990,237	0.5%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies Navy (Department of the Navy)	$4,960,442	0.5%	Rank history: #11 in FY2021, #7 in FY2022, #10 in FY2023, #17 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
30	Sicpa Securink Corp. Top agencies Treasury (Department of the Treasury)	$4,694,692	0.4%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
31	Sherpa 6 Inc. Top agencies Army (Department of the Army)	$4,591,568	0.4%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	University of Southern California Top agencies Army (Department of the Army)	$4,470,539	0.4%	Rank history: not on the FY2021–FY2025 lists; up 78 since Jul 2024–Jun 2025.
33	University of Alabama At Birmingham Top agencies NASA (National Aeronautics and Space Administration)	$4,418,581	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
34	Lumetrics, Inc. Top agencies Army (Department of the Army)	$4,000,000	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	The Charles Stark Draper Laboratory, Inc. Top agencies Army (Department of the Army)	$3,850,000	0.4%	Rank history: #39 in FY2021, #32 in FY2022, #40 in FY2023, #45 in FY2024 and #9 in FY2025; down 25 since Jul 2024–Jun 2025.
36	Turbineone Inc. Top agencies Army (Department of the Army)	$3,760,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Intellisense Systems Inc Top agencies USAF (Department of the Air Force)	$3,599,899	0.3%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	ICF International Inc. Through ICF Incorporated, L.L.C. Top agencies Army (Department of the Army)	$3,410,774	0.3%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #40 in FY2025; down 2 since Jul 2024–Jun 2025.
39	Specpro Sustainment and Environmental, LLC Top agencies EPA (Environmental Protection Agency)	$3,158,511	0.3%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; up 9 since Jul 2024–Jun 2025.
40	Human Resources Research Organization (Humrro) Top agencies Army (Department of the Army)	$3,002,252	0.3%	Rank history: not on the FY2021 list, #87 in FY2022, #46 in FY2023, #46 in FY2024 and #33 in FY2025; down 6 since Jul 2024–Jun 2025.
41	Sri International Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$2,959,371	0.3%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 50 since Jul 2024–Jun 2025.
42	Mack Defense LLC Top agencies Navy (Department of the Navy)	$2,951,080	0.3%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #15 in FY2025; down 27 since Jul 2024–Jun 2025.
43	The University of Central Florida Board of Trustees Top agencies Army (Department of the Army)	$2,840,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Cenith Innovations LLC Top agencies USAF (Department of the Air Force)	$2,830,397	0.3%	Rank history: not on the FY2021 list, #37 in FY2022, #86 in FY2023, #65 in FY2024 and #30 in FY2025; up 1 since Jul 2024–Jun 2025.
45	Parsons Corporation Through Space Ground System Solutions, Inc. Top agencies Navy (Department of the Navy)	$2,726,709	0.3%	Rank history: not on the FY2021 list, #24 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
46	Teledyne Flir Unmanned Ground Systems Inc Through Nova Research, Inc. Top agencies Navy (Department of the Navy)	$2,540,551	0.2%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #22 in FY2024 and #36 in FY2025; down 15 since Jul 2024–Jun 2025.
47	Accenture Federal Services LLC Top agencies Army (Department of the Army)	$2,370,883	0.2%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$2,354,909	0.2%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Computational Physics, Inc. Top agencies Navy (Department of the Navy)	$2,310,584	0.2%	Rank history: #40 in FY2021, #42 in FY2022, #43 in FY2023, #68 in FY2024 and #48 in FY2025; up 8 since Jul 2024–Jun 2025.
50	General Dynamics Corporation 3 awardees, including General Dynamics Mission Systems, Inc. and General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$2,306,923	0.2%	Rank history: #12 in FY2021, #11 in FY2022, #14 in FY2023, #19 in FY2024 and #31 in FY2025; down 20 since Jul 2024–Jun 2025.
51	Dignitas Technologies, LLC Top agencies Army (Department of the Army)	$2,004,235	0.2%	Rank history: #25 in FY2021, #26 in FY2022, #37 in FY2023, #27 in FY2024 and #52 in FY2025; down 11 since Jul 2024–Jun 2025.
52	Personnel Decisions Research Institutes, LLC Top agencies Army (Department of the Army)	$1,985,543	0.2%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #45 in FY2025; down 2 since Jul 2024–Jun 2025.
53	EA Engineering Science and Technology Inc. PBC Top agencies EPA (Environmental Protection Agency)	$1,937,690	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #27 in FY2023, #48 in FY2024 and #90 in FY2025; up 12 since Jul 2024–Jun 2025.
54	The Survice Engineering Company LLC Top agencies Army (Department of the Army)	$1,899,790	0.2%	Rank history: #21 in FY2021, #100 in FY2022, #44 in FY2023, #42 in FY2024 and #44 in FY2025; down 21 since Jul 2024–Jun 2025.
55	Sodalis Technologies LLC Top agencies USAF (Department of the Air Force)	$1,826,400	0.2%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56	Volta Space Technologies US Inc. Top agencies Navy (Department of the Navy)	$1,768,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; down 18 since Jul 2024–Jun 2025.
57	Rolls-Royce Corporation Top agencies USAF (Department of the Air Force)	$1,662,719	0.2%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; down 10 since Jul 2024–Jun 2025.
58	Allen Control Systems, Inc. Top agencies Army (Department of the Army)	$1,551,554	0.1%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
59	Excet, LLC Top agencies Navy (Department of the Navy)	$1,426,443	0.1%	Rank history: #8 in FY2021, #4 in FY2022, #8 in FY2023, #10 in FY2024 and #21 in FY2025; down 46 since Jul 2024–Jun 2025.
60	University Research Foundation, Inc. Top agencies Navy (Department of the Navy)	$1,378,318	0.1%	Rank history: #31 in FY2021, #45 in FY2022, #50 in FY2023, #47 in FY2024 and #51 in FY2025; down 19 since Jul 2024–Jun 2025.
61	Brice Engineering, LLC Top agencies USAF (Department of the Air Force)	$1,355,250	0.1%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
62	Summerwind Consultants Inc. Top agencies Army (Department of the Army)	$1,236,868	0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, #58 in FY2024 and #65 in FY2025; down 18 since Jul 2024–Jun 2025.
63	West Virginia University Research Corporation Top agencies Army (Department of the Army)	$1,150,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Spectral Sensor Solutions, LLC Top agencies Army (Department of the Army)	$1,102,004	0.1%	Rank history: #88 in FY2021, not on the FY2022 list, #63 in FY2023, #92 in FY2024 and #63 in FY2025; down 11 since Jul 2024–Jun 2025.
65	Ensco Inc. Top agencies USAF (Department of the Air Force)	$1,090,664	0.1%	Rank history: #5 in FY2021, #6 in FY2022, #9 in FY2023, #13 in FY2024 and #24 in FY2025; down 49 since Jul 2024–Jun 2025.
66	University of Texas At Austin Top agencies Army (Department of the Army)	$1,085,174	0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 41 since Jul 2024–Jun 2025.
67	Quadridox Inc. Top agencies DHS (Department of Homeland Security)	$1,078,217	0.1%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #57 in FY2025; new, not ranked in Jul 2024–Jun 2025.
68	Applied Information Sciences Inc. Top agencies Army (Department of the Army)	$1,016,225	0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
69	Eaton Corporation Public Limited Company Through Eaton Corporation Top agencies Army (Department of the Army)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	White Cane, Inc. Top agencies Army (Department of the Army)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	Lunar Resources Inc. Top agencies Army (Department of the Army)	$999,999	0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	Caesar Creek Software, LLC Top agencies Army (Department of the Army)	$997,248	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
73	Jacobs Engineering Group Inc. Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$978,342	0.1%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #89 in FY2025; down 19 since Jul 2024–Jun 2025.
74	DCS Corporation Top agencies Army (Department of the Army)	$742,082	0.1%	Rank history: #14 in FY2021, #16 in FY2022, #29 in FY2023, #76 in FY2024 and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	GSI Environmental Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$717,978	0.1%	Rank history: not on the FY2021 list, #31 in FY2022, #92 in FY2023, not on the FY2024 list and #73 in FY2025; up 24 since Jul 2024–Jun 2025.
76	Mainstream Engineering Corp Top agencies Army (Department of the Army)	$716,584	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Palladyne Ai Corp. Through Sarcos Group LC Top agencies Army (Department of the Army)	$627,079	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
78	Guidehouse Inc. Through Peraton Inc. Top agencies Army (Department of the Army)	$600,134	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	Oceanit Laboratories Inc. Top agencies Army (Department of the Army)	$599,918	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; down 15 since Jul 2024–Jun 2025.
80	Peraton Inc. Top agencies Army (Department of the Army)	$599,813	0.1%	Rank history: not on the FY2021–FY2023 lists, #89 in FY2024 and #56 in FY2025; down 24 since Jul 2024–Jun 2025.
81	GXM Consulting LLC Through GXM Technologies LLC Top agencies Army (Department of the Army)	$599,580	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; down 22 since Jul 2024–Jun 2025.
82	Dalcom, LLC Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$598,494	0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #72 in FY2025; down 15 since Jul 2024–Jun 2025.
83	Georgia State University Research Foundation Inc. Top agencies Army (Department of the Army)	$531,275	0.1%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #95 in FY2025; down 1 since Jul 2024–Jun 2025.
84	Hyperion Technology Group Inc Top agencies Army (Department of the Army)	$531,166	0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #95 in FY2024 and #74 in FY2025; down 4 since Jul 2024–Jun 2025.
85	The Mitre Corporation Top agencies DHS (Department of Homeland Security)	$506,778	<0.1%	Rank history: #45 in FY2021, #50 in FY2022, #19 in FY2023, #35 in FY2024 and #75 in FY2025; down 43 since Jul 2024–Jun 2025.
86	Aptima Inc. Top agencies Army (Department of the Army)	$500,164	<0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #78 in FY2025; down 31 since Jul 2024–Jun 2025.
87	Carnegie-Mellon University Top agencies USAF (Department of the Air Force)	$457,056	<0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Jul 2024–Jun 2025.
88	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force)	$415,470	<0.1%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #67 in FY2025; down 9 since Jul 2024–Jun 2025.
89	L3Harris Technologies, Inc. 2 awardees Top agencies Army (Department of the Army)	$414,121	<0.1%	Rank history: #30 in FY2021, #35 in FY2022, #70 in FY2023, #74 in FY2024 and #79 in FY2025; down 31 since Jul 2024–Jun 2025.
90	Edwards Design and Fabrication, Inc. Top agencies Army (Department of the Army)	$400,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #85 in FY2025; down 65 since Jul 2024–Jun 2025.
91	CDM Federal Programs Corporation Top agencies Navy (Department of the Navy)	$397,600	<0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	Baker Engineering and Risk Consultants, Inc. Top agencies Navy (Department of the Navy)	$370,470	<0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Jul 2024–Jun 2025.
93	Clemson University Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$333,914	<0.1%	Rank history: #98 in FY2021, not on the FY2022–FY2023 lists, #59 in FY2024 and #98 in FY2025; down 41 since Jul 2024–Jun 2025.
94	Drasgow Consulting Group, LLC Top agencies Army (Department of the Army)	$333,430	<0.1%	Rank history: #71 in FY2021, not on the FY2022 list, #97 in FY2023, not on the FY2024 list and #93 in FY2025; down 13 since Jul 2024–Jun 2025.
95	Fors Marsh Group LLC Top agencies Army (Department of the Army)	$297,434	<0.1%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #87 in FY2025; down 34 since Jul 2024–Jun 2025.
96	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration)	$264,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Lab2Market, PBC Top agencies VA (Department of Veterans Affairs)	$245,600	<0.1%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and not on the FY2025 list; down 12 since Jul 2024–Jun 2025.
98	Trustees of the Colorado School of Mines Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$206,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 17 since Jul 2024–Jun 2025.
99	Avian Vaccine Services LLC Top agencies HHS (Department of Health and Human Services)	$198,120	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Electronic Warfare Associates, Inc. Through EWA Government Systems, Inc. Top agencies Army (Department of the Army)	$180,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Jul 2024–Jun 2025.

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100 of 119 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 $1.05 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 PSC AJ13 contractors in Jul 2025–Jun 2026?

1. Advanced Technology International ($159M), 2. American Systems Corporation ($96.1M), 3. Modern Technology Solutions, Inc. ($76.7M), 4. National Security Technology Accelerator Inc. ($74.6M), 5. Assurance Technology Corp ($63.3M), 6. Leidos Holdings, Inc. ($59.9M), 7. Columbus Technologies and Services, Inc. ($57.3M), 8. Avantus Federal LLC ($38.4M), 9. Microsoft Corporation ($35.4M), 10. Northrop Grumman Systems Corporation ($32.2M).

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