Top 88 Contractors in NAICS 9281: National Security and International Affairs, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	American Institute In Taiwan Top agencies DOS (Department of State) DHS (Department of Homeland Security)	$35,903,893	47.7%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	International Organization for Migration Top agencies DHS (Department of Homeland Security)	$6,000,000	8.0%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
3	Stellar Science Ltd. Co. Top agencies USAF (Department of the Air Force)	$1,324,500	1.8%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #4 in FY2025; up 1 since FY2023.
4	Brown International Corporation Top agencies USAF (Department of the Air Force)	$1,260,840	1.7%	Rank history: #9 in FY2021, not on the FY2022–FY2023 lists and #3 in FY2025; returned.
5	Kasotc Special Operations Training Center Top agencies USSOCOM (United States Special Operations Command)	$507,063	0.7%	Rank history: #10 in FY2021, #10 in FY2022, #53 in FY2023 and not on the FY2025 list; up 48 since FY2023.
6	John Snow, Incorporated Top agencies USAID (US Agency for International Development)	$421,900	0.6%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and not on the FY2025 list; down 4 since FY2023.
7	MAK Technologies Inc. Through Trustwave Government Solutions, LLC Top agencies National Gallery of Art	$308,826	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
8	Lanier, Thomas Top agencies Treasury (Department of the Treasury)	$289,429	0.4%	Rank history: #15 in FY2021, #40 in FY2022, #19 in FY2023 and #6 in FY2025; up 11 since FY2023.
9	UEI YVJJRWLLE4H3 Top agencies Treasury (Department of the Treasury)	$251,082	0.3%	Rank history: #21 in FY2021, #19 in FY2022, #11 in FY2023 and not on the FY2025 list; up 2 since FY2023.
10	UEI F7CWBPRVVZS8 Top agencies Treasury (Department of the Treasury)	$249,024	0.3%	Rank history: #16 in FY2021, #38 in FY2022, #12 in FY2023 and #5 in FY2025; up 2 since FY2023.
11	John J Murphy Top agencies Treasury (Department of the Treasury)	$245,983	0.3%	Rank history: #74 in FY2021, #13 in FY2022, #13 in FY2023 and not on the FY2025 list; up 2 since FY2023.
12	Nichola F Fluehr-Lobban Top agencies Treasury (Department of the Treasury)	$231,590	0.3%	Rank history: #34 in FY2021, #32 in FY2022, #18 in FY2023 and #8 in FY2025; up 6 since FY2023.
13	Jeffrey Todd Cooper Top agencies Treasury (Department of the Treasury)	$219,582	0.3%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
14	Kelli Renee Thompson Top agencies Treasury (Department of the Treasury)	$219,168	0.3%	Rank history: not on the FY2021 list, #57 in FY2022, #65 in FY2023 and not on the FY2025 list; up 51 since FY2023.
15	Sheryl Kelly Top agencies Treasury (Department of the Treasury)	$217,616	0.3%	Rank history: not on the FY2021 list, #77 in FY2022, #15 in FY2023 and not on the FY2025 list; unchanged since FY2023.
16	Bloomberg Finance LP Top agencies DHS (Department of Homeland Security)	$212,640	0.3%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
17	Hein, William Top agencies Treasury (Department of the Treasury)	$185,722	0.2%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
18	UEI L7HXSKF1R545 Top agencies Treasury (Department of the Treasury)	$167,455	0.2%	Rank history: #86 in FY2021, not on the FY2022 list, #33 in FY2023 and #9 in FY2025; up 15 since FY2023.
19	Ishikawa Linda J Top agencies Treasury (Department of the Treasury)	$163,518	0.2%	Rank history: #59 in FY2021, #50 in FY2022, #26 in FY2023 and #11 in FY2025; up 7 since FY2023.
20	International Law Institute Top agencies DOS (Department of State)	$160,454	0.2%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #20 in FY2025; up 57 since FY2023.
21	Zebara LLC Top agencies USAF (Department of the Air Force)	$150,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #15 in FY2025; up 17 since FY2023.
22	Randolph Dana Top agencies Treasury (Department of the Treasury)	$148,824	0.2%	Rank history: #65 in FY2021, #48 in FY2022, #28 in FY2023 and #13 in FY2025; up 6 since FY2023.
23	Eric Richard Tremont Top agencies Treasury (Department of the Treasury)	$139,926	0.2%	Rank history: not on the FY2021 list, #89 in FY2022, #43 in FY2023 and not on the FY2025 list; up 20 since FY2023.
24	Bryan K Barnett Top agencies Treasury (Department of the Treasury)	$135,108	0.2%	Rank history: #76 in FY2021, not on the FY2022 list, #29 in FY2023 and #37 in FY2025; up 5 since FY2023.
25	Michael Joseph Fox JR Top agencies Treasury (Department of the Treasury)	$131,398	0.2%	Rank history: #70 in FY2021, #56 in FY2022, #31 in FY2023 and #14 in FY2025; up 6 since FY2023.
26	Olson, Craig T Top agencies Treasury (Department of the Treasury)	$121,285	0.2%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023 and #26 in FY2025; up 28 since FY2023.
27	UEI PNKWNXSXJR33 Top agencies Treasury (Department of the Treasury)	$121,001	0.2%	Rank history: #68 in FY2021, #53 in FY2022, #44 in FY2023 and not on the FY2025 list; up 17 since FY2023.
28	Margaret M Gavaghan Top agencies Treasury (Department of the Treasury)	$120,393	0.2%	Rank history: #91 in FY2021, #71 in FY2022, #68 in FY2023 and #30 in FY2025; up 40 since FY2023.
29	Cara Y Bidwell Top agencies Treasury (Department of the Treasury)	$118,562	0.2%	Rank history: #75 in FY2021, #59 in FY2022, #35 in FY2023 and not on the FY2025 list; up 6 since FY2023.
30	Elizabeth Tepper Top agencies Treasury (Department of the Treasury)	$109,747	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
31	Taylor, Keith Vincent Top agencies Treasury (Department of the Treasury)	$103,399	0.1%	Rank history: not on the FY2021 list, #75 in FY2022, #58 in FY2023 and not on the FY2025 list; up 27 since FY2023.
32	Donna Kaylene Blackburn Top agencies Treasury (Department of the Treasury)	$101,739	0.1%	Rank history: #39 in FY2021, #11 in FY2022, #34 in FY2023 and not on the FY2025 list; up 2 since FY2023.
33	UEI QSPCKF6T3CW6 Top agencies Treasury (Department of the Treasury)	$101,133	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and not on the FY2025 list; up 61 since FY2023.
34	Teresa A Cochran Top agencies Treasury (Department of the Treasury)	$97,958	0.1%	Rank history: #80 in FY2021, #74 in FY2022, #46 in FY2023 and #18 in FY2025; up 12 since FY2023.
35	Zimmerman Cathy Jean Top agencies Treasury (Department of the Treasury)	$97,323	0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and not on the FY2025 list; up 39 since FY2023.
36	Vasquez, Javier Gustavo Top agencies Treasury (Department of the Treasury)	$94,032	0.1%	Rank history: #94 in FY2021, #84 in FY2022, #61 in FY2023 and #28 in FY2025; up 25 since FY2023.
37	Michael Croasdaile Top agencies Treasury (Department of the Treasury)	$92,924	0.1%	Rank history: #19 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
38	Lori B Fleming Top agencies Treasury (Department of the Treasury)	$90,467	0.1%	Rank history: not on the FY2021 list, #92 in FY2022, #36 in FY2023 and not on the FY2025 list; down 2 since FY2023.
39	Deloitte (Uganda) Limited Top agencies USAID (US Agency for International Development)	$74,492	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Gianaris, George Top agencies Treasury (Department of the Treasury)	$73,712	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
41	UEI ZENFKP5CS387 Top agencies Treasury (Department of the Treasury)	$70,514	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Gendron Amanda Chapman Top agencies Treasury (Department of the Treasury)	$69,358	0.1%	Rank history: #100 in FY2021, #83 in FY2022, #62 in FY2023 and #44 in FY2025; up 20 since FY2023.
43	Union Internationale DES Telecommunications (Uit) Top agencies Commerce (Department of Commerce)	$68,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
44	UEI SX8GCBH23RK5 Top agencies Treasury (Department of the Treasury)	$65,419	0.1%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
45	Vaughn, Randall D Top agencies Treasury (Department of the Treasury)	$65,385	0.1%	Rank history: #98 in FY2021, not on the FY2022 list, #81 in FY2023 and not on the FY2025 list; up 36 since FY2023.
46	Bowen, Steven R Top agencies Treasury (Department of the Treasury)	$57,546	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and not on the FY2025 list; up 33 since FY2023.
47	UEI RT8HBTNLES48 Top agencies Treasury (Department of the Treasury)	$54,302	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; unchanged since FY2023.
48	Tesche Jean E Top agencies Treasury (Department of the Treasury)	$54,055	0.1%	Rank history: #78 in FY2021, #78 in FY2022, #45 in FY2023 and not on the FY2025 list; down 3 since FY2023.
49	Athanasaw, Danny L Top agencies Treasury (Department of the Treasury)	$47,809	0.1%	Rank history: not on the FY2021 list, #73 in FY2022, #66 in FY2023 and not on the FY2025 list; up 17 since FY2023.
50	UEI HRVBCVVV4PP8 Top agencies Treasury (Department of the Treasury)	$44,760	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	UEI KV33NPNWZYC9 Top agencies Treasury (Department of the Treasury)	$42,567	0.1%	Rank history: #63 in FY2021, #86 in FY2022, #67 in FY2023 and #16 in FY2025; up 16 since FY2023.
52	Mainwaring, Donald Top agencies Treasury (Department of the Treasury)	$38,991	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
53	UEI CCDYZCBLVR81 Top agencies Treasury (Department of the Treasury)	$37,793	0.1%	Rank history: #46 in FY2021, #63 in FY2022, #71 in FY2023 and not on the FY2025 list; up 18 since FY2023.
54	UEI VGH4YSBFY2V5 Top agencies Treasury (Department of the Treasury)	$36,956	<0.1%	Rank history: #71 in FY2021, #68 in FY2022, #37 in FY2023 and not on the FY2025 list; down 17 since FY2023.
55	Hawkins, David Top agencies Treasury (Department of the Treasury)	$36,161	<0.1%	Rank history: #14 in FY2021, #25 in FY2022, #96 in FY2023 and not on the FY2025 list; up 41 since FY2023.
56	Maurer, Marcia Sue Top agencies Treasury (Department of the Treasury)	$33,998	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	Michael Scarlatos Top agencies Treasury (Department of the Treasury)	$32,101	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Soggin, Steven Timothy Top agencies Treasury (Department of the Treasury)	$29,782	<0.1%	Rank history: not on the FY2021 list, #61 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
59	UEI WVC7CMJVKBS6 Top agencies Treasury (Department of the Treasury)	$29,463	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	UEI RMN5XMFDGC65 Top agencies Treasury (Department of the Treasury)	$28,297	<0.1%	Rank history: #58 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
61	UEI UT5BGWSDS3U5 Top agencies Treasury (Department of the Treasury)	$27,008	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	Daniel Thomas Riordan Top agencies Treasury (Department of the Treasury)	$20,109	<0.1%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
63	UEI RSRGXZKXGRJ4 Top agencies Treasury (Department of the Treasury)	$19,052	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Lisa Poggiali Top agencies USAID (US Agency for International Development)	$18,918	<0.1%	Rank history: #53 in FY2021, #45 in FY2022, #25 in FY2023 and not on the FY2025 list; down 39 since FY2023.
65	Government of the United States Top agencies Treasury (Department of the Treasury)	$18,700	<0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and not on the FY2025 list; down 1 since FY2023.
66	Mullins Stephen Top agencies Treasury (Department of the Treasury)	$18,247	<0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #100 in FY2023 and not on the FY2025 list; up 34 since FY2023.
67	UEI Z1SPYJAJ81W5 Top agencies Treasury (Department of the Treasury)	$16,479	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and not on the FY2025 list; up 11 since FY2023.
68	UEI MHVKML9YM1F5 Top agencies Treasury (Department of the Treasury)	$16,263	<0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and not on the FY2025 list; down 12 since FY2023.
69	UEI CBD7Z9MH9BT7 Top agencies Treasury (Department of the Treasury)	$16,088	<0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and not on the FY2025 list; up 15 since FY2023.
70	Matthew, Lang Top agencies MCC (Millennium Challenge Corporation)	$16,067	<0.1%	Rank history: #38 in FY2021, #34 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
71	Seale, Lawrence Top agencies Treasury (Department of the Treasury)	$14,547	<0.1%	Rank history: not on the FY2021 list, #82 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
72	Consultores Hodi, LDA Top agencies USAID (US Agency for International Development)	$12,000	<0.1%	Rank history: not on the FY2021 list, #66 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
73	Fire & Life Safety Consultants LLC Top agencies DOI (Department of the Interior)	$11,982	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Gene S Evenskaas Top agencies Treasury (Department of the Treasury)	$10,334	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Florida Department of Commerce Top agencies DHS (Department of Homeland Security)	$9,041	<0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
76	UEI RXVJE3SZQ671 Top agencies Treasury (Department of the Treasury)	$7,691	<0.1%	Rank history: #33 in FY2021, #41 in FY2022, #72 in FY2023 and not on the FY2025 list; down 4 since FY2023.
77	UEI XT22L5M2T761 Top agencies Treasury (Department of the Treasury)	$6,029	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	UEI RP3KV4TSD124 Top agencies Treasury (Department of the Treasury)	$5,629	<0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and not on the FY2025 list; down 26 since FY2023.
79	Government of Canada Top agencies DOI (Department of the Interior)	$5,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 25 since FY2023.
80	UEI UNWBE9GXFWW6 Top agencies Treasury (Department of the Treasury)	$4,100	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	UEI SH31VY2H8RP3 Top agencies Treasury (Department of the Treasury)	$2,893	<0.1%	Rank history: not on the FY2021 list, #29 in FY2022, #24 in FY2023 and not on the FY2025 list; down 57 since FY2023.
82	UEI LQURCBUJ6TN3 Top agencies Treasury (Department of the Treasury)	$2,170	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and not on the FY2025 list; up 3 since FY2023.
83	UEI Y2YATPR1HDU3 Top agencies Treasury (Department of the Treasury)	$2,073	<0.1%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
84	State of California Controllers Office Through State of California Employment Development Department Top agencies DHS (Department of Homeland Security)	$933	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Mark F Roberge Top agencies Treasury (Department of the Treasury)	$869	<0.1%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
86	De Rossi, Ruggero Top agencies Treasury (Department of the Treasury)	$695	<0.1%	Rank history: #51 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
87	Woolner, Raymond Top agencies Treasury (Department of the Treasury)	$579	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Kodat, Roger Ervin Top agencies Treasury (Department of the Treasury)	$566	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 22 since FY2023.

Rankings for the codes under NAICS 9281

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 $75.3 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.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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