Top 100 Contractors in PSC R404: Land Surveys, Cadastral Services (non-construction), Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Woolpert, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,190,727	6.1%	Rank history: #3 in FY2021, #5 in FY2022, #4 in FY2023, #20 in FY2024 and #9 in FY2025; up 10 since Aug 2024–Jul 2025.
2	North State Land Surveying Top agencies USDA (Department of Agriculture)	$1,070,940	5.5%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
3	S&P Global Inc. Through Premier Data Services Inc. Top agencies DOI (Department of the Interior)	$1,052,385	5.4%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #4 in FY2025; new, not ranked in Aug 2024–Jul 2025.
4	Natural Resource Innovations GMBH Top agencies Army (Department of the Army)	$941,931	4.8%	Rank history: #50 in FY2021, #7 in FY2022, #7 in FY2023, #7 in FY2024 and #3 in FY2025; up 3 since Aug 2024–Jul 2025.
5	NV5 Global, Inc. 2 awardees, including NV5 Geospatial, Inc. Top agencies Army (Department of the Army)	$856,295	4.4%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, not on the FY2024 list and #1 in FY2025; new, not ranked in Aug 2024–Jul 2025.
6	Minister & Glaeser Surveying, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$817,479	4.2%	Rank history: not on the FY2021 list, #18 in FY2022, not on the FY2023 list, #51 in FY2024 and #53 in FY2025; up 20 since Aug 2024–Jul 2025.
7	S&F Land Services LLC Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$688,986	3.5%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; up 73 since Aug 2024–Jul 2025.
8	Taber Drilling Top agencies Army (Department of the Army)	$616,400	3.2%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #67 in FY2024 and #7 in FY2025; up 60 since Aug 2024–Jul 2025.
9	EMC Inc. Top agencies USDA (Department of Agriculture)	$539,308	2.8%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
10	Coleman Engineering Company Top agencies USDA (Department of Agriculture)	$524,394	2.7%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and not on the FY2025 list; up 2 since Aug 2024–Jul 2025.
11	Ballard-T. Baker Smith JV Top agencies USDA (Department of Agriculture)	$410,155	2.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
12	R & M Consultants, Inc. Top agencies Army (Department of the Army)	$364,173	1.9%	Rank history: not on the FY2021 list, #33 in FY2022, #82 in FY2023, #29 in FY2024 and #63 in FY2025; up 42 since Aug 2024–Jul 2025.
13	Guzman & Munoz Engineering and Surveying, Inc. Top agencies USDA (Department of Agriculture)	$348,009	1.8%	Rank history: #10 in FY2021, not on the FY2022 list, #10 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
14	Thomas James Mathis III Top agencies USDA (Department of Agriculture)	$345,637	1.8%	Rank history: #64 in FY2021, #62 in FY2022, #69 in FY2023, #58 in FY2024 and #30 in FY2025; new, not ranked in Aug 2024–Jul 2025.
15	Marvin R Jenkins & Associates Inc. Top agencies USDA (Department of Agriculture)	$342,786	1.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
16	Tukuh Technologies, LLC Top agencies Army (Department of the Army)	$334,681	1.7%	Rank history: not on the FY2021 list, #24 in FY2022, #20 in FY2023, #35 in FY2024 and #13 in FY2025; up 3 since Aug 2024–Jul 2025.
17	Leonard Chauvin P.E P.l.s Inc. Top agencies USDA (Department of Agriculture)	$323,651	1.7%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Aug 2024–Jul 2025.
18	Stuntzner Engineering & Forestry, LLC Top agencies DOI (Department of the Interior)	$303,180	1.6%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and not on the FY2025 list; up 71 since Aug 2024–Jul 2025.
19	North Country Surveying, PLLC Top agencies USDA (Department of Agriculture)	$270,304	1.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
20	Consolidated Land Services, Inc. Top agencies Army (Department of the Army)	$269,228	1.4%	Rank history: #90 in FY2021, #29 in FY2022, #85 in FY2023, #80 in FY2024 and #92 in FY2025; up 49 since Aug 2024–Jul 2025.
21	Whidden Drmp Joint Venture LLC Top agencies Army (Department of the Army)	$267,240	1.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
22	Armstrong Surveying, Inc. Top agencies USDA (Department of Agriculture)	$252,390	1.3%	Rank history: not on the FY2021 list, #90 in FY2022, #91 in FY2023, #65 in FY2024 and #70 in FY2025; up 14 since Aug 2024–Jul 2025.
23	Glahe & Associates Inc. Top agencies USDA (Department of Agriculture)	$249,859	1.3%	Rank history: #65 in FY2021, #22 in FY2022, #66 in FY2023, #25 in FY2024 and #76 in FY2025; up 27 since Aug 2024–Jul 2025.
24	Eastside Consultants Inc. Top agencies USDA (Department of Agriculture)	$248,114	1.3%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	J.v. Burkes & Associates, Inc. Top agencies DOI (Department of the Interior)	$232,327	1.2%	Rank history: not on the FY2021 list, #48 in FY2022, #62 in FY2023, #32 in FY2024 and #19 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	Princeton Hydro L.L.C. Top agencies Army (Department of the Army)	$228,366	1.2%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
27	CRW Engineering Group, Inc. Top agencies Army (Department of the Army)	$223,696	1.2%	Rank history: not on the FY2021 list, #57 in FY2022, #16 in FY2023, #55 in FY2024 and #47 in FY2025; up 5 since Aug 2024–Jul 2025.
28	Rhea - GPI JV Top agencies USDA (Department of Agriculture)	$213,074	1.1%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, not on the FY2024 list and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	TJS Group, LLC Top agencies Army (Department of the Army)	$209,712	1.1%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #40 in FY2025; up 26 since Aug 2024–Jul 2025.
30	Federon Procurement Solutions Top agencies DOI (Department of the Interior)	$200,000	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
31	Vandemark & Lynch Inc. Top agencies USDA (Department of Agriculture)	$190,916	1.0%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Aug 2024–Jul 2025.
32	Midland Surveying, Inc. Top agencies USDA (Department of Agriculture)	$182,010	0.9%	Rank history: #9 in FY2021, #11 in FY2022, #31 in FY2023, #4 in FY2024 and #60 in FY2025; up 25 since Aug 2024–Jul 2025.
33	Mid-Mountain Surveyors, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$180,961	0.9%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; new, not ranked in Aug 2024–Jul 2025.
34	Nutter & Associates Inc. Top agencies USDA (Department of Agriculture)	$173,240	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
35	To the Point Land Surveying, LLC Top agencies USDA (Department of Agriculture)	$170,226	0.9%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and not on the FY2025 list; up 11 since Aug 2024–Jul 2025.
36	Aubertine & Currier Architects Engineers & Land Surveyors PLLC Top agencies HHS (Department of Health and Human Services)	$166,252	0.9%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Aug 2024–Jul 2025.
37	CM Archer Group, P.C. Top agencies USDA (Department of Agriculture)	$152,969	0.8%	Rank history: #52 in FY2021, #66 in FY2022, #63 in FY2023, #75 in FY2024 and #29 in FY2025; new, not ranked in Aug 2024–Jul 2025.
38	Riverrestoration.org, LLC Top agencies DOI (Department of the Interior)	$149,209	0.8%	Rank history: not on the FY2021 list, #34 in FY2022, #29 in FY2023, #90 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
39	Brockamp Land Surveying LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$139,378	0.7%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #8 in FY2024 and #18 in FY2025; down 14 since Aug 2024–Jul 2025.
40	Lei Engineering & Surveying of Oregon, LLC Top agencies DOI (Department of the Interior)	$127,524	0.7%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Aug 2024–Jul 2025.
41	Paradigm Geospatial Inc. Top agencies Army (Department of the Army)	$127,360	0.7%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Aug 2024–Jul 2025.
42	MDS Land Surveying Inc Top agencies DOI (Department of the Interior)	$127,127	0.7%	Rank history: not on the FY2021 list, #94 in FY2022, #83 in FY2023, #93 in FY2024 and #64 in FY2025; up 41 since Aug 2024–Jul 2025.
43	Monument Engineering Group Associates, Inc. Top agencies USDA (Department of Agriculture)	$124,199	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
44	Rim Rock Consulting Inc. Top agencies USDA (Department of Agriculture)	$123,699	0.6%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	L.i. Smith & Associates, Inc. Top agencies USDA (Department of Agriculture)	$122,292	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
46	West Utility Locating LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$113,260	0.6%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #46 in FY2025; up 14 since Aug 2024–Jul 2025.
47	Upper Mississippi River Basin Association Top agencies EPA (Environmental Protection Agency)	$112,834	0.6%	Rank history: #28 in FY2021, #40 in FY2022, #37 in FY2023, #47 in FY2024 and #52 in FY2025; down 18 since Aug 2024–Jul 2025.
48	Holt Gilmour Survey Associates LLC Top agencies USDA (Department of Agriculture)	$111,751	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
49	Great Lakes Commission Top agencies EPA (Environmental Protection Agency)	$108,918	0.6%	Rank history: #30 in FY2021, #55 in FY2022, #33 in FY2023, #43 in FY2024 and #54 in FY2025; down 19 since Aug 2024–Jul 2025.
50	Civil & Survey, LLC Top agencies USDA (Department of Agriculture)	$108,131	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
51	Advanced Environmental Management Group, LLC Top agencies Army (Department of the Army)	$99,863	0.5%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Aug 2024–Jul 2025.
52	New South Associates, Inc. Top agencies USDA (Department of Agriculture)	$93,448	0.5%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Aug 2024–Jul 2025.
53	Aero-Graphics Inc. Top agencies DOI (Department of the Interior)	$77,090	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
54	Jones Petrie Rafinski Corp Top agencies USDA (Department of Agriculture)	$76,750	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
55	Barry Daniel L Top agencies USDA (Department of Agriculture)	$75,350	0.4%	Rank history: #43 in FY2021, #73 in FY2022, not on the FY2023 list, #59 in FY2024 and #37 in FY2025; down 3 since Aug 2024–Jul 2025.
56	Nama Strategic Intelligence Solutions Top agencies DOS (Department of State)	$71,186	0.4%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Aug 2024–Jul 2025.
57	Gulf Shore Construction Services Inc. Top agencies Army (Department of the Army)	$69,787	0.4%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and not on the FY2025 list; down 54 since Aug 2024–Jul 2025.
58	Stantec Inc. Through Stantec Consulting Services Inc. Top agencies DOI (Department of the Interior)	$69,778	0.4%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	Edward Joseph Mallek Top agencies DOI (Department of the Interior)	$64,000	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Prime Pacific Enterprises LLC Top agencies USAF (Department of the Air Force)	$63,958	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
61	Dowl, LLC Top agencies Army (Department of the Army)	$62,883	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #21 in FY2025; down 45 since Aug 2024–Jul 2025.
62	Truland Survey LLC Top agencies DOI (Department of the Interior)	$62,615	0.3%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023, #19 in FY2024 and #78 in FY2025; up 22 since Aug 2024–Jul 2025.
63	Talarczyk Land Surveys LLC Top agencies USDA (Department of Agriculture)	$62,513	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	Statewide Land Surveying Inc Top agencies USDA (Department of Agriculture)	$58,137	0.3%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #57 in FY2025; down 30 since Aug 2024–Jul 2025.
65	Baskerville Donovan Inc. Top agencies USDA (Department of Agriculture)	$57,820	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
66	Motivf Corporation Top agencies USAF (Department of the Air Force)	$53,963	0.3%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Aug 2024–Jul 2025.
67	AMT LLC Top agencies GSA (General Services Administration)	$49,180	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Environmental Solutions & Innovations, Inc. Top agencies USDA (Department of Agriculture)	$44,398	0.2%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; new, not ranked in Aug 2024–Jul 2025.
69	Forest Resource Aviation Staffing Solutions, LLC Top agencies USDA (Department of Agriculture)	$43,131	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
70	Gulf South Research Corp Top agencies DOI (Department of the Interior)	$42,401	0.2%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Aug 2024–Jul 2025.
71	Daniel V. Fischer Top agencies USDA (Department of Agriculture)	$41,710	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
72	Western Cultural Inc. Top agencies DOI (Department of the Interior)	$39,938	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	Dj&A, P.C. Through Precision Surveys Inc. Top agencies DOI (Department of the Interior)	$37,949	0.2%	Rank history: #55 in FY2021, #71 in FY2022, #70 in FY2023, #48 in FY2024 and #5 in FY2025; down 42 since Aug 2024–Jul 2025.
74	D.e.m. Surveying, PC Top agencies USDA (Department of Agriculture)	$36,308	0.2%	Rank history: #38 in FY2021, #91 in FY2022, #76 in FY2023, #87 in FY2024 and #71 in FY2025; down 16 since Aug 2024–Jul 2025.
75	Pacific Coast Contracting Group Top agencies VA (Department of Veterans Affairs)	$35,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
76	Alta Survey LLC Top agencies DOI (Department of the Interior)	$34,984	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
77	Mid-Atlantic Surveying & Land Design Inc. Top agencies USDA (Department of Agriculture)	$32,031	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
78	Midland Surveying & Mapping JV Top agencies USDA (Department of Agriculture)	$29,871	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
79	KL Engineering Inc. Top agencies USDA (Department of Agriculture)	$29,576	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
80	Mejia & Rose Inc Top agencies DOI (Department of the Interior)	$29,505	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; new, not ranked in Aug 2024–Jul 2025.
81	Standard Valuation Services, LLC Top agencies USDA (Department of Agriculture)	$25,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
82	Cooper Zietz Engineers, Inc. Top agencies HHS (Department of Health and Human Services)	$24,717	0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #72 in FY2025; down 47 since Aug 2024–Jul 2025.
83	RLF Consulting LLC Top agencies HHS (Department of Health and Human Services)	$21,335	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Midwest Land Surveying, Inc. Top agencies USDA (Department of Agriculture)	$21,324	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
85	Awen Solutions Group, LLC Top agencies VA (Department of Veterans Affairs)	$20,162	0.1%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
86	Shine & Associates, Inc. Top agencies DOI (Department of the Interior)	$20,095	0.1%	Rank history: #68 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	RTX Corporation Through Arinc Incorporated Top agencies USAF (Department of the Air Force)	$19,978	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
88	Midwest Private Utility Locating Co LLC Top agencies USAF (Department of the Air Force)	$18,838	0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 5 since Aug 2024–Jul 2025.
89	Aarcher, Inc. Top agencies USDA (Department of Agriculture)	$17,931	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Aug 2024–Jul 2025.
90	Southern Research Historic Preservation Consultants, Inc. Top agencies USDA (Department of Agriculture)	$17,467	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Aug 2024–Jul 2025.
91	Hurtvet Subcontracting LLC Top agencies Navy (Department of the Navy)	$16,583	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 13 since Aug 2024–Jul 2025.
92	Dimco Inc. Top agencies DOI (Department of the Interior)	$16,569	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, not on the FY2023 list, #77 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
93	Wobbe & Associates, Inc. Top agencies USDA (Department of Agriculture)	$15,297	0.1%	Rank history: #83 in FY2021, not on the FY2022 list, #24 in FY2023, not on the FY2024 list and #77 in FY2025; up 7 since Aug 2024–Jul 2025.
94	H2H Geoscience Engineering, PLLC Top agencies HHS (Department of Health and Human Services)	$14,662	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Aug 2024–Jul 2025.
95	Bowen Engineering & Surveying, P.C. Top agencies Army (Department of the Army)	$13,040	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Aug 2024–Jul 2025.
96	Cacalia Design LLC Top agencies Army (Department of the Army)	$8,250	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 12 since Aug 2024–Jul 2025.
97	Westlake Consultants, Inc. Top agencies DOI (Department of the Interior)	$7,076	<0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; down 11 since Aug 2024–Jul 2025.
98	The Gilchrist Law Firm, P.a. Top agencies DOI (Department of the Interior) DOS (Department of State)	$7,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; down 32 since Aug 2024–Jul 2025.
99	Controlpoint Surveying Inc Top agencies GSA (General Services Administration)	$5,976	<0.1%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; down 72 since Aug 2024–Jul 2025.
100	Carroll Engineering Corporation Through Carroll Engineering of N.j., LLC Top agencies USDA (Department of Agriculture)	$5,000	<0.1%	Rank history: #23 in FY2021, #72 in FY2022, not on the FY2023 list, #69 in FY2024 and #68 in FY2025; down 26 since Aug 2024–Jul 2025.

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 $19.4 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 Aug 2024–Jul 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