Top 100 Contractors in PSC 2815: Diesel Engines and Components, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC 2815: Diesel Engines and Components, 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 89% of PSC 2815 contract dollars from July 2025 through June 2026

Contract obligations: $724,983,125 Net of deobligations, by contracts coded PSC 2815
Contractors: 260 Parent companies with an obligation
Largest contractor: Rolls-Royce Solutions America Inc. $160 million, 21.8% 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	Rolls-Royce Solutions America Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$159,987,136	21.8%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #10 in FY2025; up 3 since Jul 2024–Jun 2025.
2	Cummins Inc. 5 awardees, including Cummins Power Generation Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$156,229,391	21.3%	Rank history: #3 in FY2021, #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Renk America LLC Top agencies Army (Department of the Army)	$115,215,680	15.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	EOS Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$92,048,104	12.6%	Rank history: #7 in FY2021, #23 in FY2022, #7 in FY2023, #6 in FY2024 and #2 in FY2025; up 4 since Jul 2024–Jun 2025.
5	Caterpillar Inc. Top agencies Army (Department of the Army) USDA (Department of Agriculture) Navy (Department of the Navy)	$49,470,557	6.8%	Rank history: #6 in FY2021, #9 in FY2022, #4 in FY2023, #12 in FY2024 and #11 in FY2025; up 9 since Jul 2024–Jun 2025.
6	Oshkosh Corporation Through Oshkosh Defense LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$32,108,243	4.4%	Rank history: #2 in FY2021, #11 in FY2022, #21 in FY2023, #10 in FY2024 and #4 in FY2025; down 3 since Jul 2024–Jun 2025.
7	Chand, L.L.C. Top agencies DLA (Defense Logistics Agency)	$14,760,971	2.0%	Rank history: #89 in FY2021, #69 in FY2022, not on the FY2023 list, #8 in FY2024 and #6 in FY2025; down 1 since Jul 2024–Jun 2025.
8	Welin Lambie Limited Through Fairbanks Morse, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$12,667,862	1.7%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #8 in FY2025; up 3 since Jul 2024–Jun 2025.
9	Johnson & Towers LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$9,113,752	1.2%	Rank history: #21 in FY2021, #16 in FY2022, #10 in FY2023, #16 in FY2024 and #12 in FY2025; up 16 since Jul 2024–Jun 2025.
10	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$6,923,696	0.9%	Rank history: #8 in FY2021, #18 in FY2022, #6 in FY2023, #9 in FY2024 and #7 in FY2025; down 3 since Jul 2024–Jun 2025.
11	Mythics Inc. 3 awardees, including The W.w. Williams Company, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$6,231,853	0.9%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #47 in FY2025; up 28 since Jul 2024–Jun 2025.
12	Am General LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$4,997,263	0.7%	Rank history: #5 in FY2021, #1 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; down 10 since Jul 2024–Jun 2025.
13	Melton Sales & Service Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$4,829,397	0.7%	Rank history: #11 in FY2021, #12 in FY2022, #17 in FY2023, #17 in FY2024 and #13 in FY2025; up 8 since Jul 2024–Jun 2025.
14	Marinette Marine Corporation Through Fincantieri Marine Systems North America, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$3,507,821	0.5%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #22 in FY2025; up 10 since Jul 2024–Jun 2025.
15	Seahorse Defense Supply, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$3,393,650	0.5%	Rank history: #57 in FY2021, not on the FY2022 list, #64 in FY2023, not on the FY2024 list and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Pacific Power Group, LLC Top agencies DHS (Department of Homeland Security)	$3,107,524	0.4%	Rank history: #12 in FY2021, #5 in FY2022, #11 in FY2023, #7 in FY2024 and #15 in FY2025; down 3 since Jul 2024–Jun 2025.
17	Periparts Group Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$2,866,180	0.4%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; up 75 since Jul 2024–Jun 2025.
18	Fairbanks Morse, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$2,726,915	0.4%	Rank history: #4 in FY2021, #3 in FY2022, #2 in FY2023, #11 in FY2024 and #25 in FY2025; up 2 since Jul 2024–Jun 2025.
19	Atlanta Gear Works, LLC Top agencies Army (Department of the Army)	$2,708,592	0.4%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023, #14 in FY2024 and #21 in FY2025; up 12 since Jul 2024–Jun 2025.
20	Clarke Power Services Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$2,613,559	0.4%	Rank history: #32 in FY2021, #63 in FY2022, #69 in FY2023, #35 in FY2024 and #19 in FY2025; up 63 since Jul 2024–Jun 2025.
21	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$2,524,154	0.3%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #23 in FY2025; down 2 since Jul 2024–Jun 2025.
22	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$2,522,581	0.3%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #27 in FY2025; up 8 since Jul 2024–Jun 2025.
23	Tecmotiv (Usa), Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$2,383,405	0.3%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #26 in FY2025; unchanged since Jul 2024–Jun 2025.
24	Penn Power Group LLC Top agencies DLA (Defense Logistics Agency)	$2,152,446	0.3%	Rank history: #79 in FY2021, not on the FY2022–FY2023 lists, #15 in FY2024 and #9 in FY2025; down 15 since Jul 2024–Jun 2025.
25	Artex Truck Center Inc. Top agencies DLA (Defense Logistics Agency)	$2,018,733	0.3%	Rank history: not on the FY2021 list, #89 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 129 since Jul 2024–Jun 2025.
26	The W.w. Williams Company, LLC 3 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$1,992,198	0.3%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #24 in FY2025; down 4 since Jul 2024–Jun 2025.
27	Optiplex LLC Top agencies DLA (Defense Logistics Agency)	$1,709,119	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
28	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$1,420,306	0.2%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023–FY2024 lists and #31 in FY2025; up 69 since Jul 2024–Jun 2025.
29	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$1,095,067	0.1%	Rank history: #15 in FY2021, #43 in FY2022, #23 in FY2023, #44 in FY2024 and #18 in FY2025; down 11 since Jul 2024–Jun 2025.
30	NGH Retail LLC Top agencies DLA (Defense Logistics Agency)	$1,068,480	0.1%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31	Central Power Systems & Services, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$966,593	0.1%	Rank history: #46 in FY2021, #17 in FY2022, #32 in FY2023, #58 in FY2024 and #14 in FY2025; down 16 since Jul 2024–Jun 2025.
32	Fairlane Tool Company, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$851,604	0.1%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$801,170	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023 list, #96 in FY2024 and not on the FY2025 list; up 58 since Jul 2024–Jun 2025.
34	Augusta Engine Parts, Inc. Top agencies DLA (Defense Logistics Agency)	$743,151	0.1%	Rank history: #62 in FY2021, #44 in FY2022, #26 in FY2023, #27 in FY2024 and #54 in FY2025; up 33 since Jul 2024–Jun 2025.
35	Holmes Tool and Engineering, Inc. Top agencies USAF (Department of the Air Force)	$647,670	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
36	Fairwinds Technologies LLC Top agencies Navy (Department of the Navy)	$628,391	0.1%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Critical Procurement LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$576,744	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 59 since Jul 2024–Jun 2025.
38	Timken Gears & Services Inc. Top agencies Navy (Department of the Navy)	$566,945	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$560,994	0.1%	Rank history: #40 in FY2021, #32 in FY2022, #31 in FY2023, #66 in FY2024 and #36 in FY2025; up 8 since Jul 2024–Jun 2025.
40	Pines Quality Inc. Top agencies DLA (Defense Logistics Agency)	$537,293	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #100 in FY2023, #47 in FY2024 and #46 in FY2025; up 8 since Jul 2024–Jun 2025.
41	Dutch Valley Supply Co. Top agencies Navy (Department of the Navy)	$527,263	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$515,649	0.1%	Rank history: #39 in FY2021, #35 in FY2022, #52 in FY2023, #64 in FY2024 and #30 in FY2025; down 6 since Jul 2024–Jun 2025.
43	Novex Enterprises Top agencies DLA (Defense Logistics Agency)	$503,507	0.1%	Rank history: #56 in FY2021, #38 in FY2022, #27 in FY2023, #52 in FY2024 and #45 in FY2025; up 9 since Jul 2024–Jun 2025.
44	Motor-Services Hugo Stamp, Inc. Top agencies Navy (Department of the Navy)	$494,188	0.1%	Rank history: not on the FY2021 list, #58 in FY2022, #16 in FY2023, #29 in FY2024 and #32 in FY2025; down 16 since Jul 2024–Jun 2025.
45	Supplycore LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$435,833	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #80 in FY2024 and #69 in FY2025; up 23 since Jul 2024–Jun 2025.
46	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$400,674	0.1%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #75 in FY2025; up 14 since Jul 2024–Jun 2025.
47	May Tool Inc. Top agencies DLA (Defense Logistics Agency)	$396,605	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
48	AD Inc of Milwaukee Top agencies Army (Department of the Army)	$389,454	0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Big Jet, LLC Top agencies USAF (Department of the Air Force)	$369,930	0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
50	Mack Boring & Parts Co Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$365,320	<0.1%	Rank history: not on the FY2021 list, #68 in FY2022, #80 in FY2023, #22 in FY2024 and #49 in FY2025; unchanged since Jul 2024–Jun 2025.
51	Atech Inc Top agencies USAF (Department of the Air Force)	$350,620	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
52	Performance Diesel Inc. Top agencies DHS (Department of Homeland Security)	$331,182	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
53	Hydraulics International, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$328,178	<0.1%	Rank history: not on the FY2021 list, #64 in FY2022, not on the FY2023–FY2024 lists and #42 in FY2025; up 16 since Jul 2024–Jun 2025.
54	D M C O Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$311,755	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
55	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$307,448	<0.1%	Rank history: #9 in FY2021, #21 in FY2022, #71 in FY2023, #88 in FY2024 and #71 in FY2025; up 34 since Jul 2024–Jun 2025.
56	Lansing Logistics LLC Top agencies DLA (Defense Logistics Agency)	$301,276	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	A.M.S. Network LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$299,222	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	Ronald Hickey Top agencies DLA (Defense Logistics Agency)	$294,778	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59	Itag Enterprise LLC Top agencies Army (Department of the Army)	$293,853	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	General Motors LLC Top agencies DLA (Defense Logistics Agency)	$288,699	<0.1%	Rank history: #27 in FY2021, #33 in FY2022, #56 in FY2023, #46 in FY2024 and #62 in FY2025; down 5 since Jul 2024–Jun 2025.
61	Aga Truck Parts, Inc. Top agencies DLA (Defense Logistics Agency)	$262,365	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	GL Power, Inc. Top agencies Navy (Department of the Navy)	$249,626	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
63	J.G.B. Enterprises Inc. Through Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$238,834	<0.1%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; down 9 since Jul 2024–Jun 2025.
64	Cavanaugh Government Group, LLC Top agencies DLA (Defense Logistics Agency)	$235,273	<0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 100 since Jul 2024–Jun 2025.
65	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$217,915	<0.1%	Rank history: #65 in FY2021, #20 in FY2022, #77 in FY2023, #61 in FY2024 and #35 in FY2025; down 30 since Jul 2024–Jun 2025.
66	Hoosier Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$217,563	<0.1%	Rank history: #83 in FY2021, not on the FY2022 list, #50 in FY2023, not on the FY2024 list and #72 in FY2025; up 36 since Jul 2024–Jun 2025.
67	Ruta Supplies Inc. Top agencies DLA (Defense Logistics Agency)	$214,233	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 33 since Jul 2024–Jun 2025.
68	Boatswain's Locker I, Incorporated Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$213,837	<0.1%	Rank history: #52 in FY2021, #76 in FY2022, #65 in FY2023, #23 in FY2024 and #77 in FY2025; up 11 since Jul 2024–Jun 2025.
69	RDO Agriculture Equipment Co Top agencies DLA (Defense Logistics Agency)	$210,171	<0.1%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and #57 in FY2025; down 8 since Jul 2024–Jun 2025.
70	Washington Foundries Inc. Top agencies DLA (Defense Logistics Agency)	$209,747	<0.1%	Rank history: #55 in FY2021, not on the FY2022–FY2024 lists and #56 in FY2025; down 12 since Jul 2024–Jun 2025.
71	Kyodo Shipping & Trading Corp USA Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$208,310	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #97 in FY2023, not on the FY2024 list and #67 in FY2025; down 5 since Jul 2024–Jun 2025.
72	OLB Associates LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$205,812	<0.1%	Rank history: #94 in FY2021, #73 in FY2022, #45 in FY2023, #32 in FY2024 and #50 in FY2025; down 30 since Jul 2024–Jun 2025.
73	U.s. Hardware Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$193,616	<0.1%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #41 in FY2025; down 36 since Jul 2024–Jun 2025.
74	MTP Drivetrain Services, L.L.C. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOJ (Department of Justice)	$179,591	<0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; up 13 since Jul 2024–Jun 2025.
75	Horst Engineering & Manufacturing Co Top agencies DLA (Defense Logistics Agency)	$176,905	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 69 since Jul 2024–Jun 2025.
76	MXM Logistics LLC Top agencies DLA (Defense Logistics Agency)	$165,767	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
77	Seco Parts & Equipment Co Top agencies DLA (Defense Logistics Agency) DOJ (Department of Justice)	$165,282	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 28 since Jul 2024–Jun 2025.
78	Vim Industries, LLC Top agencies DLA (Defense Logistics Agency)	$163,940	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	JLG Industries, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$152,875	<0.1%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; down 52 since Jul 2024–Jun 2025.
80	Badger Truck and Automotive Group, Inc. Top agencies DLA (Defense Logistics Agency)	$150,362	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, #86 in FY2024 and #93 in FY2025; up 6 since Jul 2024–Jun 2025.
81	Independent Rough Terrain Center LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$148,893	<0.1%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #95 in FY2025; up 30 since Jul 2024–Jun 2025.
82	Engine Power, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$144,136	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023, not on the FY2024 list and #68 in FY2025; up 31 since Jul 2024–Jun 2025.
83	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$139,097	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
84	Florida Ordnance Corporation Top agencies Army (Department of the Army)	$138,105	<0.1%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #5 in FY2025; down 79 since Jul 2024–Jun 2025.
85	Tronson Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$137,125	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency)	$135,064	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Integrated Procurement Technologies Top agencies DLA (Defense Logistics Agency)	$130,259	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	Flagship Marine, Inc. Top agencies DHS (Department of Homeland Security)	$127,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; new, not ranked in Jul 2024–Jun 2025.
89	Guardian Systems LLC Top agencies DHS (Department of Homeland Security)	$110,458	<0.1%	Rank history: #74 in FY2021, #46 in FY2022, #33 in FY2023, #43 in FY2024 and #53 in FY2025; down 46 since Jul 2024–Jun 2025.
90	Dcx-Chol Enterprises, Inc. Top agencies Army (Department of the Army)	$106,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	Semper Sozo Inc. Top agencies USAF (Department of the Air Force)	$105,700	<0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	Aantilia LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$104,930	<0.1%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #65 in FY2025; down 11 since Jul 2024–Jun 2025.
93	Western Branch Diesel, LLC Top agencies DHS (Department of Homeland Security)	$98,378	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Bird-Johnson Propeller Company, LLC Top agencies Navy (Department of the Navy)	$93,920	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Spaires Inc Top agencies DLA (Defense Logistics Agency)	$93,689	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 84 since Jul 2024–Jun 2025.
96	Siddons Martin Emergency Group, LLC Top agencies USAF (Department of the Air Force)	$85,307	<0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Jul 2024–Jun 2025.
97	Carter Machinery Company, Incorporated 2 awardees Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$84,852	<0.1%	Rank history: not on the FY2021 list, #24 in FY2022, #59 in FY2023, #71 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
98	HDT Expeditionary Systems Inc. Top agencies USAF (Department of the Air Force)	$81,236	<0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 73 since Jul 2024–Jun 2025.
99	C & D Equipment Company, Inc. Top agencies DLA (Defense Logistics Agency)	$81,200	<0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 58 since Jul 2024–Jun 2025.
100	Ohio Machinery Co Top agencies DLA (Defense Logistics Agency)	$79,498	<0.1%	Rank history: #28 in FY2021, #27 in FY2022, #34 in FY2023, #48 in FY2024 and #85 in FY2025; down 18 since Jul 2024–Jun 2025.

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100 of 260 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 $733 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.
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 2815 contractors in Jul 2025–Jun 2026?

1. Rolls-Royce Solutions America Inc. ($160M), 2. Cummins Inc. ($156M), 3. Renk America LLC ($115M), 4. EOS Inc. ($92M), 5. Caterpillar Inc. ($49.5M), 6. Oshkosh Corporation ($32.1M), 7. Chand, L.L.C. ($14.8M), 8. Welin Lambie Limited ($12.7M), 9. Johnson & Towers LLC ($9.11M), 10. Jgils, LLC ($6.92M).

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