United States · Federal contract register · Supplier record

CSSI, LLC

Line: Professional, engineering and technical (R425)Register loaded to September 2026Compiled 6 October 2026

CSSI, LLC — United States · Federal contract register · Supplier record: 274 contracts, all years ($615,692,128 · Feb 2001 – Jun 2025); $8.5M since January 2024 (2 contracts · 1 agency); 1078th rank in the line (of 2,692 suppliers · 0.0%); 37 agencies never served ($4.5B on the line without CSSI, LLC).

Assay record ASY-US-1OJXVDO0E3 · Cite as: Assay Systems, “CSSI, LLC in the USAspending register”, https://assay-systems.com/register/us/cssi-llc/

274
contracts, all years
$615,692,128 · Feb 2001 – Jun 2025
$8.5M
since January 2024
2 contracts · 1 agency
1078th
rank in the line
of 2,692 suppliers · 0.0%
37
agencies never served
$4.5B on the line without CSSI, LLC

Own record by year

2019 onward
$2.2M
$14.2M
$37.2M
$83.6M
$12.7M
$8.5M
20192020202120222023202420252026

Who buys from CSSI, LLC

since January 2024
1agencies
$8.5Mpaid
100.0%top buyer
Department of Transportation100.0%
$8,492,619

Before 2024 only: Department of Defense, National Aeronautics and Space Administration.

The line

since January 2024
$34.8Bline value
9,940contracts
40agencies
2,692suppliers
20.3%held by top ten

Professional, engineering and technical (R425)

$18.1B
$12.1B
$4.6B
202420252026Jan–Sep
1078thof 2,692 suppliers
$1,326,000CSSI, LLC in the line
0.0%share of the line
0.1%of $1,123,112,971 spent by Department of Transportation

Agencies that buy the line and never bought from CSSI, LLC

37agencies
2,567contracts
$4,517,344,840since January 2024
General Services Administration126 contracts
$1,321,557,955
Department of Energy167 contracts
$810,272,357
Department of Homeland Security211 contracts
$697,776,866
Department of Commerce436 contracts
$391,080,812
Department of the Interior377 contracts
$209,476,543
Department of Veterans Affairs308 contracts
$207,795,063
Department of Health and Human Services122 contracts
$177,478,072
Department of Justice125 contracts
$161,277,109
Department of State142 contracts
$118,928,460
Environmental Protection Agency239 contracts
$94,522,780
Department of the Treasury23 contracts
$92,759,835
Agency for International Development19 contracts
$79,181,376
Department of Agriculture74 contracts
$42,227,889
Department of Housing and Urban Development6 contracts
$26,550,661
National Archives and Records Administration14 contracts
$22,701,357
Nuclear Regulatory Commission18 contracts
$11,715,936
Smithsonian Institution90 contracts
$11,632,528
Small Business Administration3 contracts
$7,585,123
Commodity Futures Trading Commission5 contracts
$7,271,750
Consumer Product Safety Commission3 contracts
$4,689,351
Department of Education2 contracts
$4,528,772
United States Trade and Development Agency1 contract
$3,855,486
National Science Foundation3 contracts
$2,926,749
Consumer Financial Protection Bureau1 contract
$2,099,835
Occupational Safety and Health Review Commission20 contracts
$1,730,404
District of Columbia Courts3 contracts
$1,624,660
Selective Service System5 contracts
$1,135,958
Millennium Challenge Corporation1 contract
$924,209
Federal Communications Commission6 contracts
$679,992
Committee for Purchase from People Who Are Blind or Severely Disabled2 contracts
$412,556
Executive Office of the President2 contracts
$377,400
Defense Nuclear Facilities Safety Board2 contracts
$213,442
U.S. International Development Finance Corporation1 contract
$121,913
National Gallery of Art3 contracts
$96,428
U.S. Agency for Global Media1 contract
$57,500
United States Chemical Safety Board4 contracts
$55,042
Merit Systems Protection Board2 contracts
$22,671

How the line is bought

by value, since 2024
43%no competition
12%one applicant
0of these to CSSI, LLC
Competed, several suppliers applied5,006 contracts
$15,656,909,322 · 45.0%
Awarded directly, no competition3,739 contracts
$14,921,722,081 · 42.9%
Competed, one supplier applied1,195 contracts
$4,190,001,624 · 12.1%

Contracts reaching their end dates

Oct 2026 – October 2027
2,931contracts
$15,340,022,167end by October 2027
399end in March 2027 · $2.3B
915in agencies never served · $2.9B
$366M
$684M
$1.9B
$1.9B
$1.5B
$2.3B
$1.6B
$1.6B
$1.5B
$518M
$465M
$976M
$30.5M
Oct 26118 contractsNov 26175 contractsDec 26318 contractsJan 27256 contractsFeb 27247 contractsMar 27399 contractsApr 27251 contractsMay 27299 contractsJun 27243 contractsJul 27134 contractsAug 27154 contractsSep 27327 contractsOct 2710 contracts

Suppliers next to it in the line

since January 2024
FEARLESS SOLUTIONS, LLC1 contract · 1 agency
$1,328,449
BUSINESS DEVELOPMENT ASSOCIATES, LLC1 contract · 1 agency
$1,327,092
CSSI, LLC
$1,326,000
COMMANDTEC, LLC1 contract · 1 agency
$1,321,823

All 2,692 suppliers in the line

The extract

Every buying office, every contract holder, value, number and end date behind the figures above.

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Source: USAspending.gov, U.S. Department of the Treasury, Bureau of the Fiscal Service, usaspending.gov, accessed 30 September 2026.The data is available to copy, adapt, redistribute, or otherwise use for non-commercial or for commercial purposes (USAspending.gov, Licensing); no Dun & Bradstreet data is shown.