Top NRC all other professional, scientific, and technical services contractors
In the 12 months ending Oct 5, 2026, the Nuclear Regulatory Commission obligated $5.1M in net prime contract dollars under NAICS 541990, up 127.8% from $2.2M in the preceding 12 months. 11 prime contractors received positive obligations, and 3 of them accounted for 80% of that spend.
Prime contracts funded by the Nuclear Regulatory Commission. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top NRC contractors for NAICS 541990
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Advanced Systems Technology & Management, Inc. | $2.4M | $1.0M | 48.0% | — |
| 2 | Numark Associates, Inc | $1.4M | $565K | 26.9% | — |
| 3 | Clason Point Partners Inc. | $334K | $275K | 6.6% | — |
| 4 | Renaissance Code Development LLC | $235K | $0 | 4.6% | New |
| 5 | Galois, Inc. | $150K | $0 | 3.0% | New |
| 6 | Sterigenics U.S., LLC | $140K | $107K | 2.8% | — |
| 7 | Westinghouse Electric Company LLC | $123K | $123K | 2.4% | ▼ 2 |
| 8 | Cornell University | $109K | $9K | 2.1% | ▲ 1 |
| 9 | Corys Inc | $87K | $14K | 1.7% | ▼ 1 |
| 10 | sabre88, LLC | $70K | $0 | 1.4% | New |
| 11 | Athey Consulting | $25K | $139K | 0.5% | ▼ 7 |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Advanced Systems Technology & Management, Inc.$1.0M → $2.4M (+$1.4M) · now #1
- Numark Associates, Inc$565K → $1.4M (+$799K) · now #2
- Renaissance Code Development LLC$0 → $235K (+$235K) · now #4
Largest declines
- Athey Consulting$139K → $25K (−$114K) · now #11
- Veracity Nuclear, LLC$65K → $0 (−$65K) · no latest-period obligations
- International Lead Association, Inc$0 → −$15K (−$15K) · no latest-period obligations
New to this market
1 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Renaissance Code Development LLC | Sep 30, 2026 | $235K |
Where the money comes from
Funding sub-agencies within the Nuclear Regulatory Commission, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Nuclear Regulatory Commission | $5.1M | $2.2M | Up $2.8M (127.8%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 31310025C0012 | Advanced Systems Technology & Management, Inc. INTERNATIONAL REGULATORY ASSISTANCE WITH RADIOACTIVE SOURCES AND URANIUM RECOVERY PROJECTS | $3.4M | Aug 31, 2027 |
| 31310025C0018 | Numark Associates, Inc INTERNATIONAL REGULATORY ASSISTANCE NUCLEAR POWER PLANTS AND RESEARCH & TEST REACTORS | $1.9M | Aug 31, 2027 |
Common questions
Who are the top NRC contractors for NAICS 541990?
In the latest 12 months, Advanced Systems Technology & Management, Inc. ($2.4M), Numark Associates, Inc ($1.4M), Clason Point Partners Inc. ($334K) received the most NRC obligations for all other professional, scientific, and technical services.
How concentrated is this market?
The eight largest primes held 96.4% of positive obligations, and Advanced Systems Technology & Management, Inc. alone held 48.0%. 1 contractors won their first obligations in this market during the latest 12 months.
Are any large NRC NAICS 541990 contracts ending soon?
2 of the largest awards in this market reach their current end date in the next 18 months. The first is 31310025C0012 (Advanced Systems Technology & Management, Inc., $3.4M obligated), ending Aug 31, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 541990 across all agencies
DoD · NAICS 541990
$5.5BDOE · NAICS 541990
$2.8BHHS · NAICS 541990
$1.3BDOT · NAICS 541990
$557.4MUSAID · NAICS 541990
$277.4MCommerce · NAICS 541990
$213.3MState Department · NAICS 541990
$169.3MVA · NAICS 541990
$110.0MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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