United States · Federal contract register · Supplier record

STEMEXPRESS, LLC

Line: Drugs and biologicals (6505)Register loaded to November 2025Compiled 6 October 2026

STEMEXPRESS, LLC — United States · Federal contract register · Supplier record: 7 contracts, all years ($204,948 · May 2020 – Sep 2024); $47.4K since January 2024 (1 contract · 1 agency); 364th rank in the line (of 514 suppliers · 0.0%); 11 agencies never served ($26.4B on the line without STEMEXPRESS, LLC).

Assay record ASY-US-1G0KYPX0HB · Cite as: Assay Systems, “STEMEXPRESS, LLC in the USAspending register”, https://assay-systems.com/register/us/stemexpress-llc/

7
contracts, all years
$204,948 · May 2020 – Sep 2024
$47.4K
since January 2024
1 contract · 1 agency
364th
rank in the line
of 514 suppliers · 0.0%
11
agencies never served
$26.4B on the line without STEMEXPRESS, LLC

Own record by year

2020 onward
$54.9K
$103K
$47.4K
202020212022202320242025

Who buys from STEMEXPRESS, LLC

since January 2024
1agencies
$47.4Kpaid
100.0%top buyer
Department of Health and Human Services100.0%
$47,440

The line

since January 2024
$28.2Bline value
158,923contracts
12agencies
514suppliers
96.4%held by top ten

Drugs and biologicals (6505)

$15.1B
$13.2B
20242025
364thof 514 suppliers
$47,440STEMEXPRESS, LLC in the line
0.0%share of the line
0.0%of $1,770,840,157 spent by Department of Health and Human Services

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

11agencies
157,938contracts
$26,436,623,565since January 2024
Department of Veterans Affairs2,253 contracts
$18,871,511,399
Department of Defense151,816 contracts
$7,145,190,573
Department of Justice3,446 contracts
$367,934,841
Department of Agriculture21 contracts
$40,416,864
Department of State233 contracts
$8,285,468
Peace Corps158 contracts
$2,977,299
Department of Homeland Security5 contracts
$127,122
Department of the Interior2 contracts
$89,569
Department of the Treasury2 contracts
$50,300
Environmental Protection Agency1 contract
$27,529
Court Services and Offender Supervision Agency1 contract
$12,600

How the line is bought

by value, since 2024
2%no competition
1%one applicant
0of these to STEMEXPRESS, LLC
Competed, several suppliers applied155,548 contracts
$27,183,786,403 · 96.4%
Awarded directly, no competition1,494 contracts
$630,079,768 · 2.2%
Competed, one supplier applied1,881 contracts
$393,597,550 · 1.4%

Contracts reaching their end dates

Oct 2026 – October 2027
83contracts
$634,984,156end by October 2027
22end in August 2027 · $39.5M
46in agencies never served · $30.0M
$11.8M
$3.8M
$4.5M
$34.2M
$2.8M
$1.4M
$38.9M
$447M
$1.2M
$39.5M
$49.6M
Oct 2620 contractsNov 269 contractsDec 265 contractsFeb 274 contractsMar 277 contractsApr 273 contractsMay 275 contractsJun 274 contractsJul 272 contractsAug 2722 contractsSep 272 contracts

Suppliers next to it in the line

since January 2024
TWIST BIOSCIENCE CORPORATION3 contracts · 1 agency
$47,816
BIOFIRE DIAGNOSTICS LLC3 contracts · 1 agency
$47,705
WASHINGTON INSTITUTE FOR COAGULATION1 contract · 1 agency
$47,688
STEMEXPRESS, LLC
$47,440

All 514 suppliers in the line

Fastest-growing supplier in the line

same line
+97%growth

Supplier UEI KABZK8W6PQT3

2024 to date
$7,051,163,185
2022–2023
$3,579,627,887

The extract

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

Request extractSee a sample extract

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.