United States · Federal contract register · Supplier record

STEPHEN J LIBBY PHD CONSULTING LLC

Line: Environmental consulting and legal support (F115)Register loaded to September 2026Compiled 6 October 2026

STEPHEN J LIBBY PHD CONSULTING LLC — United States · Federal contract register · Supplier record: 4 contracts, all years ($110,000 · Jun 2022 – Dec 2025); $30.0K since January 2024 (2 contracts · 1 agency); 118th rank in the line (of 125 suppliers · 0.01%); 13 agencies never served ($135M on the line without STEPHEN J LIBBY PHD CONSULTING LLC).

Assay record ASY-US-1C8H55L1B0 · Cite as: Assay Systems, “STEPHEN J LIBBY PHD CONSULTING LLC in the USAspending register”, https://assay-systems.com/register/us/stephen-j-libby-phd-consulting-llc/

4
contracts, all years
$110,000 · Jun 2022 – Dec 2025
$30.0K
since January 2024
2 contracts · 1 agency
118th
rank in the line
of 125 suppliers · 0.01%
13
agencies never served
$135M on the line without STEPHEN J LIBBY PHD CONSULTING LLC

Own record by year

2022 onward
$40.0K
$40.0K
$10.0K
$20.0K
20222023202420252026

Who buys from STEPHEN J LIBBY PHD CONSULTING LLC

since January 2024
1agencies
$30.0Kpaid
100.0%top buyer
Department of the Interior100.0%
$30,000

The line

since January 2024
$153Mline value
312contracts
14agencies
125suppliers
68.2%held by top ten

Environmental consulting and legal support (F115)

$74.7M
$45.0M
$33.8M
202420252026Jan–Sep
118thof 125 suppliers
$10,000STEPHEN J LIBBY PHD CONSULTING LLC in the line
0.01%share of the line
0.1%of $18,565,345 spent by Department of the Interior

Agencies that buy the line and never bought from STEPHEN J LIBBY PHD CONSULTING LLC

13agencies
264contracts
$134,891,615since January 2024
Environmental Protection Agency95 contracts
$73,891,741
General Services Administration16 contracts
$21,269,070
Department of Defense40 contracts
$14,133,106
Department of Energy6 contracts
$8,829,155
Department of Agriculture71 contracts
$6,804,369
Department of Health and Human Services6 contracts
$6,426,833
Department of Commerce4 contracts
$1,295,390
Department of Transportation6 contracts
$761,329
Department of State6 contracts
$720,662
Department of Homeland Security2 contracts
$361,269
Department of Veterans Affairs9 contracts
$311,222
Department of the Treasury1 contract
$65,748
National Gallery of Art2 contracts
$21,719

How the line is bought

by value, since 2024
5%no competition
18%one applicant
0of these to STEPHEN J LIBBY PHD CONSULTING LLC
Competed, several suppliers applied219 contracts
$119,154,971 · 77.6%
Competed, one supplier applied51 contracts
$27,250,214 · 17.8%
Awarded directly, no competition42 contracts
$7,051,775 · 4.6%

Contracts reaching their end dates

Oct 2026 – October 2027
109contracts
$103,486,123end by October 2027
14end in September 2027 · $12.0M
87in agencies never served · $95.6M
$263K
$8.8M
$7.1M
$1.7M
$2.9M
$9.8M
$7.3M
$5.4M
$14.1M
$1.8M
$29.1M
$12.0M
$3.2M
Oct 264 contractsNov 266 contractsDec 2611 contractsJan 279 contractsFeb 277 contractsMar 2711 contractsApr 2711 contractsMay 278 contractsJun 2710 contractsJul 276 contractsAug 2711 contractsSep 2714 contractsOct 271 contract

Fastest-growing supplier in the line

same line
+655%growth

Supplier UEI DHS5ZJSFCSH9

2024 to date
$9,253,974
2022–2023
$1,225,192

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.