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OST INC

OST INC is a federal contractor registered under UEI FPLRRX1M2YS5 and CAGE code 1NCB1. The organization has received $982,717,303 across 207 federal awards, with top agencies including Department of Defense, Department of Homeland Security, and Department of Transportation. Its primary NAICS code is 541330.

UEI FPLRRX1M2YS5 CAGE 1NCB1 Primary NAICS 541330
Total obligations
$982.7M
Awards
207

Federal contractor overview

OST INC is registered as a federal contractor under UEI FPLRRX1M2YS5 and CAGE 1NCB1, and is located in MCLEAN, VA, USA. Federal award data shows $982,717,303 across 207 federal awards, with top agencies including Department of Defense, Department of Homeland Security, and Department of Transportation. The contractor's primary NAICS classification is 541330, and its public business classifications include For Profit Organization.

Contractor identifiers

Legal business name
OST INC
DBA name
OPTIMAL SOLUTIONS AND TECHNOLO
Unique Entity ID
FPLRRX1M2YS5
CAGE code
1NCB1
Location
MCLEAN, VA, USA
Website
Visit contractor site

Capabilities and keywords

OST – a CMMI Level 5/ISO 9001 firm operating in 6 states. Provides (1) management consulting, (2) integrated info technology, (3) research, development, and engineering solution. Our staff possesses certifications that include CISSP, ITIL, PMP, and QAI. Agile Scrum Development

  • App Design/Dev
  • CMMI L5
  • COTS Integration
  • Database
  • Data Warehouse
  • Disaster Recovery
  • Enterprise Arch
  • Help Desk
  • Information Security
  • ISO 9001
  • IVV
  • JAVA/J2EE/JSP
  • Network/LAN/WAN
  • PMP
  • Process Modeling
  • Requirements
  • Remedy
  • RUP
  • SCAP
  • Service Mgmt/ITIL
  • System Engineering
  • Testing
  • Transformation
  • Web & Portal Imp.

NAICS codes and business types

NAICS codes

Business and socioeconomic classifications

  • For Profit Organization

Organization hierarchy

Federal obligation history

Total federal obligations

$982,717,303

Awards
207

Top agencies by obligations

  1. Department of Defense

    85 award actions

    $400,413,055
  2. Department of Homeland Security

    8 award actions

    $250,142,752
  3. Department of Transportation

    15 award actions

    $96,220,882

Federal obligations by fiscal year

Net federal contract obligations decreased from $69,028,925 in FY2024 to $52,474,552 in FY2025.

Federal obligations and award actions by fiscal year Blue bars show net federal obligations. The green line shows award-action counts. The lighter final bar and FY YTD label identify current fiscal-year-to-date activity.

Scroll horizontally to view all fiscal years.

View fiscal-year data table
Completed and current year-to-date federal fiscal-year contract activity
Fiscal year Net obligations Award actions
FY2026 YTD $7,933,623 13
FY2025 $52,474,552 68
FY2024 $69,028,925 78
FY2023 $74,646,577 78
FY2022 $67,173,670 70
FY2021 $82,870,355 79

Recent federal awards

  1. SYSTEMS ENGINEERING AND TECHNICAL ASSISTANCE BRIDGE

    Department of Defense

    $12,981,212

    Obligated

    PIID W900KK26FA025

    Awarded Jan 30, 2026

  2. SCALABLE HOMELAND INNOVATIVE ENTERPRISE LAYERED DEFENSE (SHIELD) INITIAL ORDER.

    Department of Defense

    $500

    Obligated

    PIID HQ085926FE078

    Awarded Dec 4, 2025

  3. STAFF WILL COORDINATE WITH THE WRITE YOUR OWN INSURANCE COMPANIES AND THE NFIP DIRECT CONTRACTOR AS THEY WORK TOGETHER TO PROVIDE THE INFORMATION REQUIRED BY THE NFIP. THE CONTRACTOR WILL ALSO ENGAGE IN SUPPORT ACTIVITIES THAT INCLUDE TRACKING, COLL

    Department of Homeland Security

    $12,613,906

    Obligated

    PIID 70FA6025F00000032

    Awarded Sep 30, 2025

  4. TASK ORDER FOR PROJECT MANAGER SYNTHETIC ENVIRONMENT (PM SE)

    Department of Defense

    $8,001,610

    Obligated

    PIID W900KK25FA015

    Awarded Feb 14, 2025

Federal contract vehicles

Frequently asked questions

What is OST INC's Unique Entity ID (UEI)?
OST INC's Unique Entity ID is FPLRRX1M2YS5, as registered in SAM.gov.
What is OST INC's CAGE code?
OST INC's CAGE code is 1NCB1.
What is OST INC's primary NAICS code?
OST INC's primary NAICS classification is 541330.
Where is OST INC located?
OST INC is located in MCLEAN, VA, USA.
How much has OST INC received in federal contract obligations?
OST INC has received $982,717,303 in federal contract obligations across 207 federal awards.
Which federal agencies has OST INC worked with?
OST INC's top federal agencies include Department of Defense, Department of Homeland Security, and Department of Transportation.
When was OST INC registered in SAM.gov?
OST INC's SAM.gov registration date is January 31, 2001.
What business classifications does OST INC hold?
OST INC's registered business and socioeconomic classifications include For Profit Organization.