Active
Overview
- Legal name
- RHOMBERG SERSA USA INC
- Registered location
- FLEMING ISLAND, FL, USA
- Website
- Company website ↗
- Primary NAICS
- 237990 — Other Heavy and Civil Engineering Construction
- Latest award activity
- Sep 30, 2025
Read company summary
RHOMBERG SERSA USA INC is associated with UEI VGDNWHZDYMU5 and CAGE 98A07 in public federal records. AcornBids currently links 2 prime awards totaling $1.3M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Transportation. Its recorded federal awards include work classified as Research and Development in the Social Sciences and Humanities; Engineering Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 237990 (Other Heavy and Civil Engineering Construction). Its public SAM.gov registration lists FLEMING ISLAND, FL, USA.
At a glance
Lifetime prime obligations$1.3M
Prime awards2
Awards with future end dates1
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- RHOMBERG SERSA USA INC
- UEI
- VGDNWHZDYMU5
- CAGE
- 98A07
- Registered address
- 4729 US HIGHWAY 17 STE 203, FLEMING ISLAND, FL, 32003, USA
- Registration status
- Active
- Primary NAICS
- 237990 — Other Heavy and Civil Engineering Construction
- SAM activation
- Sep 29, 2025
- Initial registration
- Dec 27, 2021
- Entity start
- Oct 31, 2021
- SAM updated
- Sep 29, 2025
- Registration expires
- Sep 26, 2026
- Fiscal year end
- Mar 31
- Place of incorporation
- FL, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 693JJ625C000007THIS CONTRACT IS ISSUED TO PROVIDE FUNDING FOR RESEARCH AND DEVELOPMENT TO CONTINUE TO SUPPORT AND UPGRADE THE GPR SYSTEM ON THE DOTX 220. THIS PROJECT COVERS ADDITIONAL DATA… | Department of Transportation | $469.2K | Sep 30, 2025 | Sep 29, 2028 |
| 693JJ622C000019IMPROVEMENTS TO AND SUPPORT OF GPR SYSTEM DEPLOYED ON DOTX 220 | Department of Transportation | $872.1K | Sep 9, 2022 | Sep 8, 2025 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Sep 29, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Dec 27, 2021 |
| Entity start | Oct 31, 2021 |
| Industry | Reported size status |
|---|---|
| 237990 — Other Heavy and Civil Engineering Construction | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| STEPHEN ATHERTON | Government business | Contact method not published | SAM registration | Not available |
| STEPHEN ATHERTON | Electronic business | Contact method not published | SAM registration | Not available |
| STEVE ATHERTON | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 237990 — Other Heavy and Civil Engineering Construction
Registered products and services
- 2230 — Right-of-Way Construction and Maintenance Equipment, Railroad
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About RHOMBERG SERSA USA INC
What products and services appear in its federal awards?
Recorded award industries: 541720 — Research and Development in the Social Sciences and Humanities; 541330 — Engineering Services.
Recorded products and services: AJ12 — GENERAL SCIENCE AND TECHNOLOGY R&D SERVICES; GENERAL SCIENCE AND TECHNOLOGY; APPLIED RESEARCH; AS31 — TRANSPORTATION R&D SERVICES; WATER TRANSPORTATION; BASIC RESEARCH.
Examples from recent award records:
- THIS CONTRACT IS ISSUED TO PROVIDE FUNDING FOR RESEARCH AND DEVELOPMENT TO CONTINUE TO SUPPORT AND UPGRADE THE GPR SYSTEM ON THE DOTX 220. THIS PROJECT COVERS ADDITIONAL DATA…
- IMPROVEMENTS TO AND SUPPORT OF GPR SYSTEM DEPLOYED ON DOTX 220
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
4729 US HIGHWAY 17 STE 203, FLEMING ISLAND, Florida 32003, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
237990 — Other Heavy and Civil Engineering Construction.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Transportation.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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