NS4 Inc.
Leesburg, VA Doing business as NS4 Inc.
- UEI
- C4E7ZG55KPM6
- CAGE
- 8JR81
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
-
- 541330 Engineering Services Primary
- 339113 Surgical Appliance and Supplies Manufacturing
- 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
- 541614 Process, Physical Distribution, and Logistics Consulting Services
- SAM.gov registration date
- Physical address
- 161 Fort Evans Rd NE STE 225, Leesburg, VA 20176, USA
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Scalable homeland innovative enterprise layered defense (shield) initial order. | Missile Defense Agency | $500 | |
| Minimum guarantee task order for associated seaport NXG MAC awards. | Naval Sea Systems Command | $500 |
About NS4 Inc.
NS4 Inc., a minority-owned small disadvantaged business based in Leesburg, Virginia, holds prime positions on two major Department of Defense indefinite-delivery vehicles as of early 2026 but has placed minimal task orders to date. The company is a Subchapter S corporation with Subcontinent Asian American ownership and self-certified small disadvantaged business status, competing on full-and-open (non-set-aside) basis across its current federal footprint.
NS4's customer base is concentrated in defense technology: the Department of the Navy's Naval Sea Systems Command (two awards, $4 billion combined potential value) and the Missile Defense Agency (two awards, $500 combined potential value) account for 100% of tracked awards. The Naval Sea Systems Command relationship anchors the dollar value through a multiple-award IDIQ under the Seaport Next Generation (Seaport-NXG) vehicle awarded January 2, 2025, with a $4 billion ceiling extending through January 1, 2029. The Missile Defense Agency relationship centers on the Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) multiple-award IDIQ, awarded January 21, 2026, with a $151 billion ceiling extending through December 28, 2035. SHIELD covers research, development, systems engineering, weapon design, production, test and evaluation, and cybersecurity across air, missile, space, and cyber defense domains, leveraging AI, machine learning, and open systems architectures. NS4 received a $500 minimum guarantee task order under each IDIQ; combined actual obligations across all four awards total $1 thousand against a $4 billion combined potential value, indicating the vehicles are newly established.
NS4 operates exclusively as a prime contractor (100% of awards) with no subcontract activity in the source data. Service Contract Inventory data captures 3 SCI records across FY2024 — all as named subcontractor — representing approximately 6.7 FTEs. This SCI activity reflects sub-engagement on service contracts captured above the $150,000 reporting threshold and does not represent the company's total federal or enterprise footprint; the SCI records predate the prime IDIQ awards by several months and indicate prior subcontracting activity not carried forward into the prime vehicles.
NS4's federal footprint is nascent. All four tracked prime awards fall within the past fourteen months, with the two largest vehicles (SHIELD and Seaport-NXG) established in late January 2025 and January 2026 respectively. No task orders beyond minimum guarantee amounts have been obligated on either vehicle as of the source date, leaving recompete exposure and sustained-capability profile undefined.
Contract vehicles
Quick answers
What is NS4 Inc.'s UEI?
NS4 Inc.'s Unique Entity ID (UEI) in SAM.gov is C4E7ZG55KPM6.
What is NS4 Inc.'s CAGE code?
NS4 Inc.'s CAGE code is 8JR81.
What is NS4 Inc.'s primary NAICS code?
NS4 Inc.'s primary NAICS code is 541330 (Engineering Services).
Where is NS4 Inc. located?
NS4 Inc.'s physical address in SAM.gov is 161 Fort Evans Rd NE STE 225, Leesburg, VA 20176, USA.
Is NS4 Inc. registered in SAM.gov?
Yes. NS4 Inc.'s SAM.gov registration is active through March 11, 2027.
Which contract vehicles does NS4 Inc. hold?
NS4 Inc. holds a place on 2 federal contract vehicles, including SHIELD and Seaport-NXG.
What is NS4 Inc.'s most recent federal award?
NS4 Inc.'s most recent federal contract award is Scalable homeland innovative enterprise layered defense (shield) initial order (HQ085926FG300), from Missile Defense Agency, on January 21, 2026.
On GovTribe
See NS4 Inc.'s full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
- Similar vendors