Meet the Leadership Team
Clifton Thomas
SVP, Growth, Execution & Operational Excellence
Executive Leadership — Growth, Execution & Operational Excellence
Clifton Thomas
Growth vision, disciplined procurement execution, scalable operating model
- Leads SummAT Pro’s vision, growth strategy, and execution model, with a focus on disciplined procurement, sourcing, supplier engagement, and measurable client outcomes.
- Owns end-to-end delivery discipline across client baselines, opportunity pipelines, sourcing strategy, execution roadmaps, KPI cadence, supplier controls, and audit-ready documentation.
- Built and executed category strategies across $1B+ portfolios at Kroger, integrating supplier strategy, procurement discipline, commercial execution, private-label development, and go-to-market planning.
- Brings hands-on experience across retail, foodservice, procurement, supplier management, sourcing strategy, account execution, and operational coordination.
- Developed international sourcing strategies and supplier relationships that strengthened product availability, cost discipline, and commercial growth.
Leadership Profile
- Proven leader with 20+ years across retail, procurement, and sales execution, aligning growth strategy with disciplined execution and measurable results
- Combines commercial leadership and procurement expertise to deliver scalable, repeatable outcomes
- Drives performance through data, accountability, and operational discipline, focused on long-term client value at SummAT Pro
Vision + Execution
- Aligns growth strategy to a disciplined execution engine with measurable outcomes
- Ensures repeatable systems that scale with controls and reporting discipline
- Strengthens lender confidence through governance, audit readiness, and accountability
Market + Partnerships
- Expands pipeline through partnership-led sourcing and trusted referral routes
- Improves win rate with clear positioning, qualification discipline, and procurement-ready offers
- Supports scalable growth with repeatable partnership playbooks and governance
Executive Leadership — Market Strategy & Partnerships
Greg Armstrong
Go-to-market execution through partnerships,
positioning, and disciplined qualification
- Executes go-to-market strategy aligned to SummAT Pro’s vision and operating model
- Builds and manages strategic partnerships (supplier network, referral channels, field relationships) to expand pipeline
- Leverages small-business ownership experience and ties in construction/electrical to accelerate partner-led sourcing
- Drives positioning and messaging that supports the Sprint entry offer and Sprint $\rightarrow$ Retainer conversion
- Leads deal qualification discipline (ICP + Deal Desk) to protect margins, capacity, and delivery fit
- Establishes partnership governance: mutual action plans, service expectations, and performance review cadence
Leadership Profile
- Greg Armstrong is a founding leader of the company that ultimately became SummAT Pro, where his vision has driven growth from day one
- Renowned for forging long-term client relationships and crafting balanced deals with strong attention to detail
- Thrives under pressure and leverages technology to streamline operations and improve client efficiency
- Empowers teams and drives continuous growth through disciplined leadership
- Remains dedicated to advancing SummAT Pro’s mission, anchored in collaboration, ethics, and innovation
Greg Armstrong
SVP, Market Strategy & Partnerships
Executive Leadership — Digital Operations & Cybersecurity
Digital Operations & Cybersecurity — Brain Jar Capability Integration
Hartford Matthews
VP, Digital Operations & Systems
- Leads SummAT Pro’s digital infrastructure, automation, and systems architecture, enabling scalable execution
- Owns end-to-end execution workflow: intake → CRM → execution → reporting, ensuring real-time visibility and performance
- Builds and deploys automation workflows that reduce manual effort and support Sprint → Retainer scalability
- Ensures platform reliability, uptime, and secure data operations across all client engagements
- Applies expertise in contract structure, brand systems, and digital workflows to maintain audit-ready standards
- Establishes consistency and control across all digital assets, including intake, workflows, and reporting environments
Leadership Profile
- Brings 20+ years of experience in strategic planning, systems design, and process optimization
- Known for building scalable, efficient systems that support execution without operational drag
- Combines technical leadership and business process expertise to drive performance and reliability
- Focused on automation, data integrity, and system accountability across all operations
- Committed to strengthening SummAT Pro through secure infrastructure, disciplined execution, and continuous improvement
Market + Partnerships
- Expands pipeline through partnership-led sourcing and trusted referral routes
- Improves win rate with clear positioning, qualification discipline, and procurement-ready offers
- Supports scalable growth with repeatable partnership playbooks and governance
Market + Partnerships
- Expands pipeline through partnership-led sourcing and trusted referral routes
- Improves win rate with clear positioning, qualification discipline, and procurement-ready offers
- Supports scalable growth with repeatable partnership playbooks and governance
- Leads SummAT Pro’s cybersecurity strategy and digital defense architecture, ensuring secure, scalable operations
- Owns IT infrastructure, system performance, and workflow optimization, delivering resilient, high-performance workflows
- Drives audit-ready governance and risk management, integrating financial controls, compliance, and operational discipline
- Builds secure, scalable systems that support real-time execution and enterprise-level data integrity
- Combines technical execution with financial oversight, strengthening decision-making, cost control, and risk visibility
- Applies advanced cybersecurity training and modern threat defense to protect systems and client data
Leadership Profile
- Brings 20+ years of experience across IT infrastructure, financial operations, and digital systems
- Known for integrating security-first architecture with scalable business execution
- Combines technical leadership and operational discipline to deliver reliable, high-performing systems
- Drives performance through data, accountability, and system optimization
- Committed to strengthening SummAT Pro through cybersecurity, governance, and operational excellence
Jason Matthews
VP, Cybersecurity & Operational Excellence
Key Advisors — Supplier Partnerships & Finance
Advisory support for supplier ecosystem growth and audit-ready financial operations
Advisory Impact
Supplier + Finance
- Expands supplier ecosystem and partnership credibility across commercial and public sectors
- Improves audit readiness and financial reporting discipline for lenders
- Supports scalable growth through governance, controls, and operating cadence
- Leads supplier inclusion and partnership strategy across complex supply chains
- Expands supplier ecosystem through diverse, high-quality partner networks
- Former Kroger leader in supplier diversity and enterprise engagement roles
- National speaker and board-level contributor across FMI, OMSDC, and U.S. Hispanic Chamber
- Recognitions include Progressive Grocer (Top Women in Grocery)
Advisory Perspective (Supplier Partnerships)
- Brings deep expertise in supplier diversity, partnership strategy, and ecosystem development
- Strengthens commercial and public-sector credibility through trusted relationships, inclusive sourcing, and disciplined partnership models
Denise Thomas
Senior Advisor, Small Business & Supplier Partnerships
- Advises on accounting structure and monthly close discipline (bank-ready reporting)
- Supports cash conversion and working-capital visibility (billing, collections, and payables cadence)
- Strengthens controls: approvals, segregation of duties, and audit-ready documentation
- Guides forecasting, KPI dashboards, and lender reporting packages
Advisory Perspective (Finance & Controls)
- Provides expertise in financial discipline, reporting structure, and lender readiness
- Strengthens scalable growth through controls, governance, audit-ready processes, cash flow visibility, and financial accountability
Andy Hagemann
Senior Advisor, Financial Operations & Accounting