Top 100 Contractors in NAICS 5619: Other Support Services, Jul 2025–Jun 2026

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

The top 10 won 66% of NAICS 5619 contract dollars from July 2025 through June 2026

Ranking facts

Contract obligations
$1,362,335,672 Net of deobligations, by contracts coded NAICS 5619 or a code under it
Contractors
810 Parent companies with an obligation
Largest contractor
Lockheed Martin Corporation $824 million, 38.7% of obligations
Data as of

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 $823,812,640
Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2 $237,124,523
Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Jul 2024–Jun 2025.
3 $79,057,196
Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
4
Atkins Nuclear Secured Holdings Corporation Through Isotek Systems, LLC
$68,378,923
Rank history: #4 in FY2021, #4 in FY2022, #6 in FY2023, #5 in FY2024 and #4 in FY2025; up 2 since Jul 2024–Jun 2025.
5 $46,753,146
Rank history: #10 in FY2021, #7 in FY2022, #9 in FY2023, #6 in FY2024 and #6 in FY2025; up 2 since Jul 2024–Jun 2025.
6 $38,632,668
Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
7
Trace Inc.
$36,220,961
Rank history: #13 in FY2021, #11 in FY2022, #10 in FY2023, #7 in FY2024 and #7 in FY2025; up 2 since Jul 2024–Jun 2025.
8 $29,290,188
Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #9 in FY2025; up 2 since Jul 2024–Jun 2025.
9 $25,558,205
Rank history: not on the FY2021 list, #6 in FY2022, #7 in FY2023, #11 in FY2024 and #11 in FY2025; up 3 since Jul 2024–Jun 2025.
10
CGI Federal Inc.
$24,938,968
Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #5 in FY2025; down 6 since Jul 2024–Jun 2025.
11 $22,004,045
Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #13 in FY2025; up 4 since Jul 2024–Jun 2025.
12 $20,859,086
Rank history: #27 in FY2021, #27 in FY2022, #14 in FY2023, #13 in FY2024 and #12 in FY2025; up 1 since Jul 2024–Jun 2025.
13 $18,085,824
Rank history: #30 in FY2021, #9 in FY2022, #11 in FY2023, #15 in FY2024 and #56 in FY2025; up 48 since Jul 2024–Jun 2025.
14 $16,350,881
Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #14 in FY2025; unchanged since Jul 2024–Jun 2025.
15 $15,942,223
Rank history: #16 in FY2021, #18 in FY2022, #12 in FY2023, #19 in FY2024 and #15 in FY2025; up 5 since Jul 2024–Jun 2025.
16 $12,227,006
Rank history: not on the FY2021 list, #76 in FY2022, #58 in FY2023, #37 in FY2024 and #20 in FY2025; up 10 since Jul 2024–Jun 2025.
17 $11,971,664
Rank history: #34 in FY2021, #17 in FY2022, #24 in FY2023, #22 in FY2024 and #16 in FY2025; up 6 since Jul 2024–Jun 2025.
18 $11,895,282
Rank history: #61 in FY2021, #22 in FY2022, #32 in FY2023, #36 in FY2024 and #24 in FY2025; up 16 since Jul 2024–Jun 2025.
19 $11,517,430
Rank history: #41 in FY2021, #56 in FY2022, #27 in FY2023, #30 in FY2024 and #23 in FY2025; up 10 since Jul 2024–Jun 2025.
20 $11,377,292
Rank history: #68 in FY2021, #41 in FY2022, #41 in FY2023, #28 in FY2024 and #18 in FY2025; up 5 since Jul 2024–Jun 2025.
21
Miami Environmental & Energy Solutions LLC
$11,026,722
Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; up 147 since Jul 2024–Jun 2025.
22 $10,210,515
Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #22 in FY2025; down 1 since Jul 2024–Jun 2025.
23 $9,125,307
Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and #53 in FY2025; up 37 since Jul 2024–Jun 2025.
24 $8,545,531
Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #17 in FY2025; down 6 since Jul 2024–Jun 2025.
25 $8,309,824
Rank history: #20 in FY2021, #20 in FY2022, #15 in FY2023, #26 in FY2024 and #21 in FY2025; up 3 since Jul 2024–Jun 2025.
26 $7,967,784
Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #31 in FY2025; up 22 since Jul 2024–Jun 2025.
27 $7,706,193
Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #20 in FY2024 and #27 in FY2025; down 8 since Jul 2024–Jun 2025.
28 $7,374,073
Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29 $6,702,764
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30 $6,344,270
Rank history: #44 in FY2021, #48 in FY2022, #18 in FY2023, #10 in FY2024 and #8 in FY2025; down 22 since Jul 2024–Jun 2025.
31 $6,204,869
Rank history: not on the FY2021 list, #33 in FY2022, #42 in FY2023, #44 in FY2024 and #30 in FY2025; up 4 since Jul 2024–Jun 2025.
32 $6,072,398
Rank history: #31 in FY2021, #35 in FY2022, #31 in FY2023, #43 in FY2024 and #28 in FY2025; up 7 since Jul 2024–Jun 2025.
33 $5,500,000
Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #50 in FY2024 and #34 in FY2025; up 11 since Jul 2024–Jun 2025.
34 $5,421,707
Rank history: #51 in FY2021, #92 in FY2022, #82 in FY2023, not on the FY2024 list and #57 in FY2025; up 48 since Jul 2024–Jun 2025.
35 $5,333,817
Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; up 1 since Jul 2024–Jun 2025.
36 $5,149,792
Rank history: not on the FY2021 list, #30 in FY2022, #62 in FY2023, #46 in FY2024 and #35 in FY2025; up 5 since Jul 2024–Jun 2025.
37 $4,937,004
Rank history: not on the FY2021 list, #36 in FY2022, not on the FY2023 list, #51 in FY2024 and #43 in FY2025; up 1 since Jul 2024–Jun 2025.
38 $4,876,393
Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39 $4,864,042
Rank history: #65 in FY2021, #73 in FY2022, #68 in FY2023, #67 in FY2024 and #37 in FY2025; up 7 since Jul 2024–Jun 2025.
40 $4,841,938
Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 64 since Jul 2024–Jun 2025.
41 $4,804,998
Rank history: not on the FY2021 list, #90 in FY2022, #75 in FY2023, not on the FY2024 list and #38 in FY2025; up 103 since Jul 2024–Jun 2025.
42 $4,766,570
Rank history: #55 in FY2021, #53 in FY2022, #67 in FY2023, #55 in FY2024 and #47 in FY2025; up 10 since Jul 2024–Jun 2025.
43 $4,700,768
Rank history: not on the FY2021 list, #26 in FY2022, #40 in FY2023, #42 in FY2024 and #44 in FY2025; down 3 since Jul 2024–Jun 2025.
44 $4,568,090
Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; up 46 since Jul 2024–Jun 2025.
45
Leading Authorities Inc
$4,550,000
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
46 $4,543,602
Rank history: #46 in FY2021, #38 in FY2022, #49 in FY2023, #52 in FY2024 and #33 in FY2025; down 1 since Jul 2024–Jun 2025.
47 $4,461,897
Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #25 in FY2025; down 23 since Jul 2024–Jun 2025.
48 $4,164,179
Rank history: #43 in FY2021, #75 in FY2022, #43 in FY2023, #68 in FY2024 and #58 in FY2025; up 21 since Jul 2024–Jun 2025.
49 $4,000,321
Rank history: #60 in FY2021, #71 in FY2022, #90 in FY2023, #60 in FY2024 and #49 in FY2025; up 31 since Jul 2024–Jun 2025.
50 $3,758,183
Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #21 in FY2024 and #41 in FY2025; down 20 since Jul 2024–Jun 2025.
51 $3,663,795
Rank history: #75 in FY2021, not on the FY2022–FY2023 lists, #58 in FY2024 and #51 in FY2025; up 15 since Jul 2024–Jun 2025.
52 $3,640,385
Rank history: #52 in FY2021, #51 in FY2022, #34 in FY2023, #27 in FY2024 and #32 in FY2025; down 20 since Jul 2024–Jun 2025.
53 $3,453,022
Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #52 in FY2025; down 2 since Jul 2024–Jun 2025.
54 $3,357,150
Rank history: #86 in FY2021, not on the FY2022–FY2023 lists, #94 in FY2024 and #54 in FY2025; up 11 since Jul 2024–Jun 2025.
55 $3,208,739
Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 9 since Jul 2024–Jun 2025.
56 $3,171,834
Rank history: not on the FY2021 list, #96 in FY2022, #87 in FY2023, not on the FY2024 list and #81 in FY2025; up 29 since Jul 2024–Jun 2025.
57 $3,106,986
Rank history: #11 in FY2021, #3 in FY2022, #5 in FY2023, #12 in FY2024 and #10 in FY2025; down 46 since Jul 2024–Jun 2025.
58 $3,004,788
Rank history: #15 in FY2021, not on the FY2022 list, #99 in FY2023, #14 in FY2024 and #67 in FY2025; down 36 since Jul 2024–Jun 2025.
59 $2,952,690
Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; up 13 since Jul 2024–Jun 2025.
60 $2,885,970
Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61 $2,826,740
Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #50 in FY2025; down 12 since Jul 2024–Jun 2025.
62 $2,758,035
Rank history: #39 in FY2021, #32 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
63 $2,751,768
Rank history: #42 in FY2021, #94 in FY2022, #33 in FY2023, #91 in FY2024 and #68 in FY2025; up 13 since Jul 2024–Jun 2025.
64 $2,730,254
Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 336 since Jul 2024–Jun 2025.
65 $2,723,331
Rank history: not on the FY2021 list, #97 in FY2022, #89 in FY2023, #85 in FY2024 and not on the FY2025 list; up 31 since Jul 2024–Jun 2025.
66 $2,651,429
Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 25 since Jul 2024–Jun 2025.
67 $2,623,510
Rank history: not on the FY2021 list, #52 in FY2022, #61 in FY2023, #71 in FY2024 and #62 in FY2025; down 5 since Jul 2024–Jun 2025.
68 $2,616,152
Rank history: not on the FY2021 list, #15 in FY2022, #8 in FY2023, #29 in FY2024 and not on the FY2025 list; up 365 since Jul 2024–Jun 2025.
69 $2,490,206
Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #88 in FY2025; up 37 since Jul 2024–Jun 2025.
70 $2,425,327
Rank history: #82 in FY2021, #84 in FY2022, #59 in FY2023, #63 in FY2024 and #46 in FY2025; down 27 since Jul 2024–Jun 2025.
71 $2,330,575
Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 12 since Jul 2024–Jun 2025.
72 $2,322,795
Rank history: #56 in FY2021, #40 in FY2022, #38 in FY2023, #34 in FY2024 and #59 in FY2025; down 22 since Jul 2024–Jun 2025.
73 $2,293,872
Rank history: #94 in FY2021, #82 in FY2022, not on the FY2023–FY2024 lists and #78 in FY2025; up 27 since Jul 2024–Jun 2025.
74 $2,230,757
Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #69 in FY2025; down 3 since Jul 2024–Jun 2025.
75 $2,222,129
Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #71 in FY2025; down 8 since Jul 2024–Jun 2025.
76 $2,200,817
Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, #99 in FY2024 and #85 in FY2025; up 21 since Jul 2024–Jun 2025.
77 $2,183,771
Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; down 23 since Jul 2024–Jun 2025.
78 $2,093,188
Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and not on the FY2025 list; up 118 since Jul 2024–Jun 2025.
79 $2,063,000
Rank history: not on the FY2021 list, #21 in FY2022, #30 in FY2023, #38 in FY2024 and #26 in FY2025; down 46 since Jul 2024–Jun 2025.
80 $1,964,638
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81 $1,955,611
Rank history: #72 in FY2021 and not on the FY2022–FY2025 lists; up 139 since Jul 2024–Jun 2025.
82 $1,954,866
Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; down 3 since Jul 2024–Jun 2025.
83 $1,944,850
Rank history: not on the FY2021–FY2022 lists, #46 in FY2023, #93 in FY2024 and not on the FY2025 list; up 24 since Jul 2024–Jun 2025.
84 $1,886,868
Rank history: #80 in FY2021, #62 in FY2022, #94 in FY2023, #100 in FY2024 and #87 in FY2025; up 8 since Jul 2024–Jun 2025.
85 $1,860,590
Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 48 since Jul 2024–Jun 2025.
86 $1,837,682
Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and not on the FY2025 list; down 18 since Jul 2024–Jun 2025.
87 $1,814,663
Rank history: not on the FY2021–FY2022 lists, #72 in FY2023, #75 in FY2024 and #79 in FY2025; down 14 since Jul 2024–Jun 2025.
88 $1,801,371
Rank history: #83 in FY2021, #66 in FY2022, not on the FY2023 list, #81 in FY2024 and #55 in FY2025; down 10 since Jul 2024–Jun 2025.
89
Perkins & Associates LLC
$1,799,421
Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 42 since Jul 2024–Jun 2025.
90 $1,792,370
Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #70 in FY2024 and #61 in FY2025; down 32 since Jul 2024–Jun 2025.
91 $1,735,450
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92 $1,701,453
Rank history: #37 in FY2021, #47 in FY2022, #26 in FY2023, #41 in FY2024 and #84 in FY2025; down 11 since Jul 2024–Jun 2025.
93 $1,649,094
Rank history: not on the FY2021–FY2023 lists, #59 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
94 $1,648,301
Rank history: not on the FY2021–FY2025 lists; up 24 since Jul 2024–Jun 2025.
95
Accenture Federal Services LLC
$1,591,510
Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96 $1,526,040
Rank history: not on the FY2021–FY2025 lists; up 3 since Jul 2024–Jun 2025.
97 $1,513,181
Rank history: not on the FY2021–FY2022 lists, #60 in FY2023, not on the FY2024 list and #82 in FY2025; up 4 since Jul 2024–Jun 2025.
98 $1,507,758
Rank history: not on the FY2021–FY2025 lists; up 340 since Jul 2024–Jun 2025.
99 $1,424,654
Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #60 in FY2025; down 52 since Jul 2024–Jun 2025.
100 $1,408,742
Rank history: not on the FY2021 list, #85 in FY2022, #83 in FY2023, #97 in FY2024 and #92 in FY2025; down 12 since Jul 2024–Jun 2025.
Show 75 more

100 of 810 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 5619

Code Net obligations Largest contractor
56199 All Other Support Services $1,158,500,101 Lockheed Martin Corporation
56192 Convention and Trade Show Organizers $177,112,133 Techtrans International Inc.
56191 Packaging and Labeling Services $26,723,438 Aphena Pharma Solutions-Tennessee, LLC

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 $2.13 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 NAICS 5619 contractors in Jul 2025–Jun 2026?

1. Lockheed Martin Corporation ($824M), 2. V2X, Inc. ($237M), 3. General Dynamics Corporation ($79.1M), 4. Atkins Nuclear Secured Holdings Corporation ($68.4M), 5. Techtrans International Inc. ($46.8M), 6. Event Strategies Inc. ($38.6M), 7. Trace Inc. ($36.2M), 8. Chenega Global Protection, LLC ($29.3M), 9. Sierra Nevada Company, LLC ($25.6M), 10. CGI Federal Inc. ($24.9M).

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