Active
Veteran Owned BusinessService Disabled Veteran Owned BusinessSmall Business
Overview
- Legal name
- ADDX CORPORATION
- Registered location
- ALEXANDRIA, VA, USA
- Website
- Company website ↗
- Primary NAICS
- 541330 — Engineering Services
- Latest award activity
- Aug 27, 2026
Read company summary
ADDX CORPORATION is associated with UEI T4QLGX92KC66 and CAGE 1XPA3 in public federal records. AcornBids currently links 30 prime awards totaling $88.0M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Defense. Its recorded federal awards include work classified as Engineering Services; Nonscheduled Chartered Passenger Air Transportation; Custom Computer Programming Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541330 (Engineering Services). Its public SAM.gov registration lists ALEXANDRIA, VA, USA.
At a glance
Lifetime prime obligations$88.0M
Prime awards30
Awards with future end dates8
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 Refresh pending; these totals may be out of date.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
- ADDX CORPORATION
- UEI
- T4QLGX92KC66
- CAGE
- 1XPA3
- Registered address
- 4825 MARK CENTER DR, ALEXANDRIA, VA, 22311, USA
- Registration status
- Active
- Primary NAICS
- 541330 — Engineering Services
- SAM activation
- Sep 8, 2025
- Initial registration
- Apr 9, 2002
- Entity start
- Feb 7, 2002
- SAM updated
- Sep 8, 2025
- Registration expires
- Sep 4, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- DE, 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 |
|---|---|---|---|---|
| 693KA925F00096THIS TASK ORDER PROVIDES TRAINING PROGRAMMATIC, TECHNICAL, AND CONTENT DEVELOPMENT SUPPORT TO THE AIRPORTS, OFFICE OF COMPLIANCE (ACO). | Department of Transportation | $1.5M | Jun 26, 2025 | Jul 31, 2027 |
| DOC45PAPT1700191IGF::CT::IGF CONTRACTOR SUPPORT FOR PREW 2.0 PROJECT SERVER P3 SUBJECT AREA F.1.3 | Department of Commerce | $1.2M | Apr 14, 2017 | Mar 31, 2019 |
| 47QRCA24DV056ONE ACQUISITION SOLUTION FOR INTEGRATED SERVICES PLUS (OASIS+) SERVICE-DISABLED VETERAN-OWNED SMALL BUSINESS MULTIPLE AGENCY CONTRACT (MAC) | General Services Administration | $2.5K | Sep 30, 2024 | Not available |
| 47QRCA25DS070ONE ACQUISITION SOLUTION FOR INTEGRATED SERVICES PLUS (OASIS+) SMALL BUSINESS MULTIPLE AGENCY CONTRACT (MAC) | General Services Administration | $2.5K | Dec 19, 2024 | Not available |
| 80TECH26D0043SEWP VI IS A MULTIPLE AWARD GWAC THAT PROVIDES NASA AND ALL FEDERAL AGENCIES WITH A FULL SUITE OF INFORMATION TECHNOLOGY (IT) SOLUTIONS FOR COMMUNICATION AND AUDIO-VISUAL… | National Aeronautics and Space Administration | $20.0B | Nov 1, 2026 | Not available |
| W15P7T19D0004THIS CONTRACT WILL PROVIDE ACC-APG CUSTOMERS, OTHER PROGRAM EXECUTIVE OFFICES (PEOS), OTHER DEPARTMENT OF DEFENSE (DOD) AGENCIES, AND OTHER FEDERAL AGENCIES WITH KNOWLEDGE BASED… | Department of Defense | $37.4B | Oct 18, 2018 | Not available |
| 47QTCA26D0003FEDERAL SUPPLY SCHEDULE CONTRACT | General Services Administration | $500.0K | Oct 1, 2025 | Not available |
| GS35F0431XFEDERAL SUPPLY SCHEDULE CONTRACT. | General Services Administration | $62.8M | Jun 10, 2011 | Not available |
| N0017819D7036SEAPORT-NXG | Department of Defense | $500 | Jan 2, 2019 | Not available |
| FA830725FB042LOGISTICS AND TECHNICAL SUPPORT SERVICES FOR COMSEC PRODUCTS SECTION, FORCE PROTECTION (FP) PRODUCTS SECTION, WEAPONS STORAGE SECURITY SYSTEM (WS3) SECTION, AND COMSEC… | Department of Defense | $11.4M | Mar 13, 2025 | Sep 15, 2030 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Sep 8, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Apr 9, 2002 |
| Entity start | Feb 7, 2002 |
Registration classifications: Veteran Owned Business, Service Disabled Veteran Owned Business, Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 518210 — Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | Not reported |
| 522320 — Financial Transactions Processing, Reserve, and Clearinghouse Activities | Not reported |
| 523160 — Commodity Contracts Intermediation | Not reported |
| 541219 — Other Accounting Services | Not reported |
| 541330 — Engineering Services | Not reported |
| 541360 — Geophysical Surveying and Mapping Services | Not reported |
| 541380 — Testing Laboratories and Services | Not reported |
| 541511 — Custom Computer Programming Services | Not reported |
| 541512 — Computer Systems Design Services | Not reported |
| 541513 — Computer Facilities Management Services | Not reported |
| 541519 — Other Computer Related Services | Not reported |
| 541611 — Administrative Management and General Management Consulting Services | Not reported |
| 541612 — Human Resources Consulting Services | Not reported |
| 541613 — Marketing Consulting Services | Not reported |
| 541614 — Process, Physical Distribution, and Logistics Consulting Services | Not reported |
| 541618 — Other Management Consulting Services | Not reported |
| 541620 — Environmental Consulting Services | Not reported |
| 541690 — Other Scientific and Technical Consulting Services | Not reported |
| 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | Not reported |
| 541720 — Research and Development in the Social Sciences and Humanities | Not reported |
| 541990 — All Other Professional, Scientific, and Technical Services | Not reported |
| 561110 — Office Administrative Services | Not reported |
| 561210 — Facilities Support Services | Not reported |
| 561320 — Temporary Help Services | Not reported |
| 561410 — Document Preparation Services | Not reported |
| 561421 — Telephone Answering Services | Not reported |
| 561431 — Private Mail Centers | Not reported |
| 561611 — Investigation and Personal Background Check Services | Not reported |
| 561612 — Security Guards and Patrol Services | Not reported |
| 561920 — Convention and Trade Show Organizers | Not reported |
| 611420 — Computer Training | Not reported |
| 611430 — Professional and Management Development Training | Not reported |
| 611519 — Other Technical and Trade Schools | Not reported |
| 811210 — Electronic and Precision Equipment Repair and Maintenance | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| WILLIAM MILLWARD | Government business | Contact method not published | SAM registration | Not available |
| JOHN MILLWARD | Alternate government business | Contact method not published | SAM registration | Not available |
| SARAH MILLWARD | Electronic business | Contact method not published | SAM registration | Not available |
| SARAH MILLWARD | Alternate electronic business | Contact method not published | SAM registration | Not available |
| Lydia Theunissen | Contractor contract manager | ltheunissen@addxcorp.com | Source | Oct 1, 2026 |
| John Millward | Contractor program manager | jmillward@addxcorp.com | Source | Oct 1, 2026 |
| Lydia Theunissen | Contractor contract manager | ltheunissen@addxcorp.com | Source | Oct 1, 2026 |
| John Millward | Contractor program manager | jmillward@addxcorp.com | Source | Oct 1, 2026 |
Registered industries
- 518210 — Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
- 522320 — Financial Transactions Processing, Reserve, and Clearinghouse Activities
- 523160 — Commodity Contracts Intermediation
- 541219 — Other Accounting Services
- 541330 — Engineering Services
- 541360 — Geophysical Surveying and Mapping Services
- 541380 — Testing Laboratories and Services
- 541511 — Custom Computer Programming Services
- 541512 — Computer Systems Design Services
- 541513 — Computer Facilities Management Services
- 541519 — Other Computer Related Services
- 541611 — Administrative Management and General Management Consulting Services
- 541612 — Human Resources Consulting Services
- 541613 — Marketing Consulting Services
- 541614 — Process, Physical Distribution, and Logistics Consulting Services
- 541618 — Other Management Consulting Services
- 541620 — Environmental Consulting Services
- 541690 — Other Scientific and Technical Consulting Services
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- 541720 — Research and Development in the Social Sciences and Humanities
- 541990 — All Other Professional, Scientific, and Technical Services
- 561110 — Office Administrative Services
- 561210 — Facilities Support Services
- 561320 — Temporary Help Services
- 561410 — Document Preparation Services
- 561421 — Telephone Answering Services
- 561431 — Private Mail Centers
- 561611 — Investigation and Personal Background Check Services
- 561612 — Security Guards and Patrol Services
- 561920 — Convention and Trade Show Organizers
- 611420 — Computer Training
- 611430 — Professional and Management Development Training
- 611519 — Other Technical and Trade Schools
- 811210 — Electronic and Precision Equipment Repair and Maintenance
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About ADDX CORPORATION
What products and services appear in its federal awards?
Recorded award industries: 541330 — Engineering Services; 481211 — Nonscheduled Chartered Passenger Air Transportation; 541511 — Custom Computer Programming Services.
Recorded products and services: R425 — Engineering and Technical Services; R706 — Logistics Support Services; DH10 — Platform delivered as a service for databases and middleware. A distributed platform, application and system integration resources enabling cross application development, communications and information sharing..
Examples from recent award records:
- THIS TASK ORDER PROVIDES TRAINING PROGRAMMATIC, TECHNICAL, AND CONTENT DEVELOPMENT SUPPORT TO THE AIRPORTS, OFFICE OF COMPLIANCE (ACO).
- IGF::CT::IGF CONTRACTOR SUPPORT FOR PREW 2.0 PROJECT SERVER P3 SUBJECT AREA F.1.3
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
4825 MARK CENTER DR, ALEXANDRIA, Virginia 22311, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541330 — Engineering Services.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Defense; Department of Homeland Security; General Services Administration.
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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