United States · Federal contract register · Supplier record

STS SYSTEMS SUPPORT, LLC

Line: Professional, engineering and technical (R425)Register loaded to September 2026Compiled 16 October 2026

STS SYSTEMS SUPPORT, LLC — United States · Federal contract register · Supplier record: 100 contracts, all years ($297,992,636 · Sep 2018 – Mar 2026); $34.6M since January 2024 (31 contracts · 2 agencies); 437th rank in the line (of 2,692 suppliers · 0.03%); 36 agencies never served ($4.4B on the line without STS SYSTEMS SUPPORT, LLC).

Assay record ASY-US-1QJA1BJ1PZ · Cite as: Assay Systems, “STS SYSTEMS SUPPORT, LLC: 31 government contracts in the United States since 2024”, https://assay-systems.com/register/us/sts-systems-support-llc/

100
contracts, all years
$297,992,636 · Sep 2018 – Mar 2026
$34.6M
since January 2024
31 contracts · 2 agencies
437th
rank in the line
of 2,692 suppliers · 0.03%
36
agencies never served
$4.4B on the line without STS SYSTEMS SUPPORT, LLC

Own record by year

2019 onward
$50.9M
$90.1M
$13.5M
$82.9M
$20.6M
$22.9M
$10.2M
$1.6M
20192020202120222023202420252026

Who buys from STS SYSTEMS SUPPORT, LLC

since January 2024
2agencies
$34.6Mpaid
99.5%top buyer
Department of Defense99.5%
$34,479,578
Department of Agriculture0.5%
$160,815

Before 2024 only: Department of the Interior, General Services Administration.

Won without a rival

2023-10-03 – 2026-04-27
60uncontested awards
94%of its awards
56without a competition
4single bid

STS SYSTEMS SUPPORT, LLC won 60 of its 64 public contract awards in United States without a rival from 2023-10-03 to 2026-04-27, worth $54.1M: 56 without a competition and 4 after a competition that drew a single bid. 5 buyers awarded it without a rival, the largest Department of the Air Force with 51.

Buyers: Department of the Air Force (51) · Department of the Army (3) · Defense Health Agency (2) · Federal Acquisition Service (2) · Forest Service (2)

Every uncontested award of STS SYSTEMS SUPPORT, LLC · United States: all uncontested awards

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
437thof 2,692 suppliers
$11,179,441STS SYSTEMS SUPPORT, LLC in the line
0.03%share of the line
0.0%of $28,824,356,510 spent by Department of Defense

Agencies that buy the line and never bought from STS SYSTEMS SUPPORT, LLC

36agencies
2,812contracts
$4,371,014,131since January 2024
Department of Transportation675 contracts
$1,123,112,971
Department of Energy167 contracts
$810,272,357
Department of Homeland Security211 contracts
$697,776,866
Department of Commerce436 contracts
$391,080,812
National Aeronautics and Space Administration147 contracts
$303,818,707
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 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 STS SYSTEMS SUPPORT, LLC
Competed, several suppliers applied5,018 contracts
$15,666,762,763 · 45.1%
Awarded directly, no competition3,727 contracts
$14,911,868,640 · 42.9%
Competed, one supplier applied1,195 contracts
$4,190,001,624 · 12.1%

Contracts reaching their end dates

Oct 2026 – October 2027
2,913contracts
$15,162,168,635end by October 2027
400end in March 2027 · $2.3B
985in agencies never served · $1.8B
$170M
$684M
$1.9B
$1.9B
$1.5B
$2.3B
$1.6B
$1.6B
$1.5B
$518M
$465M
$976M
$49.2M
Oct 2691 contractsNov 26175 contractsDec 26317 contractsJan 27256 contractsFeb 27247 contractsMar 27400 contractsApr 27251 contractsMay 27299 contractsJun 27243 contractsJul 27134 contractsAug 27154 contractsSep 27327 contractsOct 2719 contracts

Suppliers next to it in the line

since January 2024
IRONMOUNTAIN SOLUTIONS, LLC1 contract · 1 agency
$11,230,143
SIKORSKY AIRCRAFT CORPORATION5 contracts · 1 agency
$11,194,636
STS SYSTEMS SUPPORT, LLC
$11,179,441
INNOVATIVE MANAGEMENT STRATEGISTS, LLC1 contract · 1 agency
$11,156,347

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.