Top 100 Contractors in PSC 5865: Electronic Countermeasures, Counter-Countermeasures and Quick Reaction Capability Equipment, FY2021

Name: Top 100 Contractors in PSC 5865: Electronic Countermeasures, Counter-Countermeasures and Quick Reaction Capability Equipment, FY2021
Creator: GovTribe

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

The top 10 won 91% of FY2021 PSC 5865 contract dollars

Contract obligations: $2,980,649,826 Net of deobligations, by contracts coded PSC 5865
Contractors: 269 Parent companies with an obligation
Largest contractor: Northrop Grumman Corporation $743 million, 24.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation 9 awardees, including Northrop Grumman Systems Corporation and Alliant Techsystems Operations LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$742,935,686	24.3%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
2	L3Harris Technologies, Inc. 17 awardees, including L3Harris Technologies Integrated Systems L.P., L3Harris Forcex, Inc. and Acron Aviation, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$676,276,898	22.2%	Rank history: #2 in FY2022, #3 in FY2023, #4 in FY2024 and #3 in FY2025; down 1 since FY2020.
3	Lockheed Martin Corporation 7 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$443,018,945	14.5%	Rank history: #3 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2020.
4	The Boeing Company 6 awardees, including Digital Receiver Technology, Inc. and Argon ST, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$370,310,007	12.1%	Rank history: #4 in FY2022, #4 in FY2023, #5 in FY2024 and #8 in FY2025; up 4 since FY2020.
5	BAE Systems PLC 6 awardees, including BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$218,824,628	7.2%	Rank history: #5 in FY2022, #5 in FY2023, #3 in FY2024 and #5 in FY2025; down 1 since FY2020.
6	RTX Corporation 12 awardees, including Raytheon Company, Rockwell Collins, Inc. and Data Link Solutions LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$96,049,807	3.1%	Rank history: #6 in FY2022, #11 in FY2023, #6 in FY2024 and #4 in FY2025; new, not ranked in FY2020.
7	General Dynamics Corporation 5 awardees, including General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$83,509,856	2.7%	Rank history: #10 in FY2022, #9 in FY2023, #16 in FY2024 and #10 in FY2025; unchanged since FY2020.
8	Sierra Nevada Company, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) Navy (Department of the Navy)	$78,693,875	2.6%	Rank history: #12 in FY2022, #6 in FY2023, #7 in FY2024 and #7 in FY2025; down 3 since FY2020.
9	Leonardo S.p.A. 2 awardees, including DRS Systems, Inc. and DRS Naval Power Systems Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$36,696,781	1.2%	Rank history: #7 in FY2022, #7 in FY2023, #15 in FY2024 and #9 in FY2025; up 1 since FY2020.
10	Ultra Electronics Forensic Technology Inc 3 awardees, including Ultra Electronics Ocean Systems Inc., Caes Mission Systems LLC and DNE Technologies, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$31,639,791	1.0%	Rank history: #8 in FY2022, #10 in FY2023, #20 in FY2024 and not on the FY2025 list; up 5 since FY2020.
11	Government of Canada Through Canadian Commercial Corporation Top agencies Navy (Department of the Navy)	$30,386,370	1.0%	Rank history: #13 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
12	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. and Dynetics, Inc. Top agencies Navy (Department of the Navy)	$22,853,298	0.7%	Rank history: #9 in FY2022, #8 in FY2023, #18 in FY2024 and #13 in FY2025; down 6 since FY2020.
13	Chemring Group PLC 3 awardees, including Chemring Australia PTY Ltd and Alloy Surfaces Co Inc. Top agencies Navy (Department of the Navy)	$22,231,891	0.7%	Rank history: #14 in FY2022, #12 in FY2023, #11 in FY2024 and not on the FY2025 list; up 17 since FY2020.
14	Kranze Technology Solutions Inc. Top agencies Navy (Department of the Navy)	$15,865,801	0.5%	Rank history: #21 in FY2022, #15 in FY2023, #25 in FY2024 and #28 in FY2025; down 2 since FY2020.
15	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$14,725,355	0.5%	Rank history: #27 in FY2022, #16 in FY2023, #30 in FY2024 and not on the FY2025 list; up 11 since FY2020.
16	Transdigm Group Incorporated 3 awardees, including Armtec Countermeasures Co Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$10,241,732	0.3%	Rank history: #17 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
17	Northrop Grumman Systems Corporation 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$9,957,721	0.3%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
18	L3Harris Nexgen Communications LLC Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$9,403,652	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
19	Caci Photonics, LLC Top agencies USAF (Department of the Air Force)	$7,709,198	0.3%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
20	SRC Inc. Through Srctec, LLC Top agencies Army (Department of the Army)	$7,158,632	0.2%	Rank history: #11 in FY2022, #14 in FY2023, #42 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
21	Kihomac Inc. Top agencies USAF (Department of the Air Force)	$4,674,046	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	Ultra Electronics Ocean Systems Inc. Top agencies Navy (Department of the Navy)	$4,631,701	0.2%	Rank history: not on the FY2022–FY2025 lists; up 19 since FY2020.
23	Tyonek Native Corporatio Through Tfab Defense Systems LLC Top agencies Army (Department of the Army)	$4,172,301	0.1%	Rank history: #29 in FY2022, #19 in FY2023, #44 in FY2024 and not on the FY2025 list; unchanged since FY2020.
24	Sechan Electronics Inc. Top agencies Navy (Department of the Navy)	$3,172,942	0.1%	Rank history: #26 in FY2022, #17 in FY2023, #22 in FY2024 and #15 in FY2025; unchanged since FY2020.
25	Mercury Computer Systems Inc. 2 awardees, including Mercury Defense Systems, Inc. and Mercury Systems Inc. Top agencies Navy (Department of the Navy)	$2,686,000	0.1%	Rank history: #22 in FY2022, #28 in FY2023, #12 in FY2024 and #38 in FY2025; down 4 since FY2020.
26	Logos Technologies, Llc. Top agencies Army (Department of the Army)	$2,594,318	0.1%	Rank history: not on the FY2022 list, #29 in FY2023, #62 in FY2024 and not on the FY2025 list; down 6 since FY2020.
27	Thomas B. Thriges Fond 2 awardees, including Terma Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$2,447,096	0.1%	Rank history: #19 in FY2022, #20 in FY2023, #27 in FY2024 and not on the FY2025 list; up 16 since FY2020.
28	Heico Aerospace Corporat 2 awardees, including Research Electronics International, L.L.C. and Ttt-Cubed Inc. Top agencies Navy (Department of the Navy)	$2,087,480	0.1%	Rank history: #32 in FY2022, #35 in FY2023, #34 in FY2024 and #31 in FY2025; new, not ranked in FY2020.
29	3DB Labs Inc. Top agencies Navy (Department of the Navy)	$1,759,529	0.1%	Rank history: not on the FY2022–FY2023 lists, #52 in FY2024 and #45 in FY2025; new, not ranked in FY2020.
30	UEI VU94E8UWHLL7 Top agencies Navy (Department of the Navy)	$1,435,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$1,407,298	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	United States Technologies Inc. Top agencies Navy (Department of the Navy)	$1,340,264	<0.1%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
33	Meggitt PLC 2 awardees, including Meggitt (Uk) Limited and Meggitt Defense Systems, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,287,959	<0.1%	Rank history: #35 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
34	Jacobs Engineering Group Inc. 2 awardees, including The Keyw Corporation and Amentum Technology, Inc. Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army)	$1,217,200	<0.1%	Rank history: #72 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; up 67 since FY2020.
35	Eon Instrumentation, Inc. Top agencies Navy (Department of the Navy)	$1,165,250	<0.1%	Rank history: #58 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
36	Teledyne Technologies Incorporated Through Teledyne Defense Electronics, LLC Top agencies DLA (Defense Logistics Agency)	$946,145	<0.1%	Rank history: not on the FY2022 list, #38 in FY2023, #87 in FY2024 and #46 in FY2025; up 70 since FY2020.
37	Parsons Corporation Through Qrc, LLC Top agencies Navy (Department of the Navy)	$901,956	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Keysight Technologies Inc. Top agencies Navy (Department of the Navy)	$800,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Bushido Associates Inc. Top agencies USAF (Department of the Air Force)	$775,800	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Nu Waves Ltd. Top agencies Navy (Department of the Navy)	$770,757	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
41	Jopana Technologies, Inc. Top agencies Navy (Department of the Navy)	$707,425	<0.1%	Rank history: #38 in FY2022, #32 in FY2023, not on the FY2024 list and #72 in FY2025; down 5 since FY2020.
42	Synergent Technologies, Inc. Top agencies Navy (Department of the Navy)	$666,495	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Mas Components & Coatings, LLC Top agencies DLA (Defense Logistics Agency)	$570,690	<0.1%	Rank history: #100 in FY2022, not on the FY2023 list, #45 in FY2024 and #68 in FY2025; up 43 since FY2020.
44	Comtech Telecommunications Corp. 2 awardees, including Comtech Satellite Network Technologies, Inc. and Stellant Pst Corp. Top agencies Navy (Department of the Navy)	$530,399	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Relm Communications Inc. Top agencies Army (Department of the Army)	$510,446	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Science Applications International Corporation 2 awardees, including Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$495,618	<0.1%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
47	National Technical Systems Inc. Through NTS Technical Systems, LLC Top agencies Navy (Department of the Navy)	$486,715	<0.1%	Rank history: not on the FY2022 list, #87 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
48	The Board Room Inc. Top agencies Army (Department of the Army)	$389,552	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Integrated Procurement Technologies Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$379,701	<0.1%	Rank history: #43 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
50	Centroid, Inc. Top agencies DLA (Defense Logistics Agency)	$375,492	<0.1%	Rank history: not on the FY2022–FY2023 lists, #81 in FY2024 and #61 in FY2025; up 16 since FY2020.
51	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$351,410	<0.1%	Rank history: #49 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
52	Elbit Systems Ltd 3 awardees, including Elbitamerica, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$323,592	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Aeronix, Inc. Top agencies DLA (Defense Logistics Agency)	$322,304	<0.1%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
54	RH Laboratories, Inc. Top agencies DLA (Defense Logistics Agency)	$303,543	<0.1%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
55	Cobham Advanced Electronic Solutions Inc. Through Caes Systems LLC Top agencies Navy (Department of the Navy)	$300,826	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
56	Corp Ten International Through DTC Communications, Inc. Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$266,540	<0.1%	Rank history: not on the FY2022 list, #64 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2020.
57	V Technical Textiles Inc. Top agencies Navy (Department of the Navy)	$236,778	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Advanced Computer Concepts, Inc. Top agencies Navy (Department of the Navy)	$209,936	<0.1%	Rank history: not on the FY2022 list, #60 in FY2023, not on the FY2024 list and #30 in FY2025; new, not ranked in FY2020.
59	Trofholz Technologies, Inc. Top agencies USDA (Department of Agriculture)	$204,195	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	NTS Holding Corporation Inc. Through NTS Technical Systems, LLC Top agencies Navy (Department of the Navy)	$201,099	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$184,575	<0.1%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
62	Vectrus Systems Corporation Through Advantor Systems II LLC Top agencies USAF (Department of the Air Force)	$178,701	<0.1%	Rank history: #44 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
63	KBR Wyle Services, LLC Top agencies Navy (Department of the Navy)	$169,135	<0.1%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
64	Rocky Mountain Instrument Co. Top agencies NASA (National Aeronautics and Space Administration)	$168,812	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	CACI International Inc. Through Charon Technologies LLC Top agencies USAF (Department of the Air Force)	$168,411	<0.1%	Rank history: #39 in FY2022, #33 in FY2023, #9 in FY2024 and #6 in FY2025; new, not ranked in FY2020.
66	M.c. Dean, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$167,902	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Anritsu Americas Sales Company Top agencies Army (Department of the Army)	$165,204	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$159,515	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	D-Fend Solutions AD Inc. Top agencies DOJ (Department of Justice)	$152,200	<0.1%	Rank history: not on the FY2022–FY2023 lists, #49 in FY2024 and #40 in FY2025; down 14 since FY2020.
70	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$144,750	<0.1%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
71	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies Navy (Department of the Navy)	$144,017	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
72	Noresco LLC Through Kidde Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$127,778	<0.1%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
73	Richard Manufacturing Company Top agencies DLA (Defense Logistics Agency)	$126,845	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 32 since FY2020.
74	Cobham Advanced Electron Through Caes Systems LLC Top agencies Navy (Department of the Navy)	$124,520	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Van Cleve & Associates, Inc. Top agencies Treasury (Department of the Treasury)	$116,250	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Elma Electronic Inc. Top agencies Navy (Department of the Navy)	$115,295	<0.1%	Rank history: #55 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
77	Management Services Group, Inc. Top agencies Navy (Department of the Navy)	$113,745	<0.1%	Rank history: #28 in FY2022, #18 in FY2023, #23 in FY2024 and #37 in FY2025; down 13 since FY2020.
78	Keystone Fire Protection Co Top agencies DLA (Defense Logistics Agency)	$110,272	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Government of the United States 2 awardees, including Federal Prison Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$109,632	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$109,342	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Serco North America (Holdings) Inc Through Serco Inc. Top agencies Navy (Department of the Navy)	$101,305	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$101,293	<0.1%	Rank history: not on the FY2022 list, #96 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
83	Ruta Supplies Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$97,791	<0.1%	Rank history: not on the FY2022 list, #58 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
84	Thales Through Thales Defense & Security Inc. Top agencies DLA (Defense Logistics Agency)	$95,835	<0.1%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
85	Cardinal Health, Inc. Through Cardinal Health 200, LLC Top agencies Navy (Department of the Navy)	$92,457	<0.1%	Rank history: not on the FY2022 list, #65 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
86	Rodelco Electronics Corp Top agencies DLA (Defense Logistics Agency)	$89,623	<0.1%	Rank history: #40 in FY2022, #46 in FY2023, #48 in FY2024 and not on the FY2025 list; down 38 since FY2020.
87	MLD Technologies, L.L.C. Top agencies Navy (Department of the Navy)	$89,502	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies USAF (Department of the Air Force)	$87,886	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Comperipherals Incorporated Top agencies DLA (Defense Logistics Agency)	$87,380	<0.1%	Rank history: not on the FY2022–FY2023 lists, #78 in FY2024 and #73 in FY2025; down 19 since FY2020.
90	Alektronics Inc. Top agencies DLA (Defense Logistics Agency)	$87,051	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Terma Inc. Top agencies Navy (Department of the Navy)	$81,096	<0.1%	Rank history: not on the FY2022–FY2023 lists, #51 in FY2024 and #18 in FY2025; new, not ranked in FY2020.
92	Rex Systems Incorporated Top agencies DLA (Defense Logistics Agency)	$80,770	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Esco Technologies Inc. Through Globe Composite Solutions, LLC Top agencies Navy (Department of the Navy)	$79,543	<0.1%	Rank history: #57 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
94	Zavtek Inc. Top agencies DOJ (Department of Justice)	$77,678	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Lokos Electronics, LLC Top agencies DLA (Defense Logistics Agency)	$76,900	<0.1%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
96	Smiths Group PLC Through Smiths Detection Inc. Top agencies Navy (Department of the Navy)	$76,830	<0.1%	Rank history: not on the FY2022 list, #41 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
97	Griffon Corporation Through Telephonics Corp Top agencies DLA (Defense Logistics Agency)	$71,666	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Panelmatic Inc. Through Panelmatic Youngstown, Inc. Top agencies DLA (Defense Logistics Agency)	$70,280	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	J.b. Nottingham & Co Inc. Top agencies Navy (Department of the Navy)	$67,571	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$67,450	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 269 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 $3.05 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.
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 PSC 5865 contractors in FY2021?

1. Northrop Grumman Corporation ($743M), 2. L3Harris Technologies, Inc. ($676M), 3. Lockheed Martin Corporation ($443M), 4. The Boeing Company ($370M), 5. BAE Systems PLC ($219M), 6. RTX Corporation ($96M), 7. General Dynamics Corporation ($83.5M), 8. Sierra Nevada Company, LLC ($78.7M), 9. Leonardo S.p.A. ($36.7M), 10. Ultra Electronics Forensic Technology Inc ($31.6M).

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