GRID SQUARE HOLDINGS LLC (CO)
Registration facts
SAM.gov registration as of
- SAM.gov registration
- Active
- Registration expiration date Feb 18, 2027
Registration
- Doing business as
- SENTINEL CYBER DEFENSE SOLUTIONS
- Entity structure
- Partnership or Limited Liability Partnership
- Business start date
- Oct 31, 2025 (under a year)
- Location
- Colorado Springs, CO
- Purpose of registration
- All Awards
- Website
- gridsquareholdings.com
Source: SAM.gov entity registration and FPDS contract actions recorded under UEI FD56L6NP71J4. GovChime does not check exclusions.
Performance
Capabilities
NAICS codes
- 541519Other Computer Related Services(primary)
- 541512Computer Systems Design ServicesSmall
- 541690Other Scientific and Technical Consulting ServicesSmall
- 811210Electronic and Precision Equipment Repair and MaintenanceSmall
Small: small business for that NAICS, self-certified in SAM.gov registration.
SBA certifications
No certification in the SBA profile data.
Business types self-reported in SAM.gov registration:
- Self Certified Small Disadvantaged Business
- Veteran-Owned Business
- Service-Disabled Veteran-Owned Business
Product and service codes (PSC)
- DE01IT AND TELECOM - END USER: HELP DESK; TIER 1-2, WORKSPACE, PRINT, OUTPUT, PRODUCTIVITY TOOLS (LABOR)
- DF01IT AND TELECOM - IT MANAGEMENT SUPPORT SERVICES (LABOR)
- DG01IT AND TELECOM - NETWORK SUPPORT SERVICES (LABOR)
- DJ01IT AND TELECOM - SECURITY AND COMPLIANCE SUPPORT SERVICES (LABOR)
Federal Capability Statement
Grid Square Holdings LLC is a Service-Disabled Veteran-Owned Small Business (SDVOSB) providing cybersecurity operations, security engineering, and risk management to Department of Defense agencies. We specialize in defensive cyber operations (DCO), Zero Trust architecture, vulnerability management, and mission assurance across enterprise IT and mission-critical systems.
Capabilities & Services
Contracts
Contact Info
As of . Source: SAM.gov Points of Contact.
SAM.gov registration for GRID SQUARE HOLDINGS LLC lists a physical address and a separate mailing address, along with 3 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.
Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).
Physical Address
5605 Cedar Creek Vw Apt 106
Colorado Springs, CO, 80915
USA
Mailing Address
5605 Cedar Creek Vw Apt 106
Colorado Springs, CO, 80915
USA
Government Business Contact
Marcus J Byrd
PRESIDENT
5605 Cedar Creek Vw Apt 106
Colorado Springs, CO, 80915
USA
Electronic Business Contact
Marcus J Byrd
PRESIDENT
5605 Cedar Creek Vw Apt 106
Colorado Springs, CO, 80915
USA
Past Performance Contact
Marcus J Byrd
PRESIDENT
5605 Cedar Creek Vw Apt 106
Colorado Springs, CO, 80915
USA
Additional Details
As of . Source: SAM.gov Entity Registration.
GRID SQUARE HOLDINGS LLC has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires February 18, 2027.
Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.
Compliance & Risk Assessment
Source: SAM.gov FAR responsesSuspension/Debarment Status
SAM.gov registration reports no active exclusion
Public Display
Entity information is publicly displayed
Disaster Relief Registry
Registered for disaster relief contracting
Bonding Information
No bonding information provided
EDI
Not declared in SAM.gov
Business Structure
Source: SAM.govRegistration Details
Source: SAM.govInitial Registration
Last Update
Registration Activation
Fiscal Year End
Congressional District
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