Executive Leadership Team

Executive Leadership Team

Executive <BR />Leadership Team

ELT Group Photo_New

Innovators. Strategists. Recognized Leaders.

At Flash Global, our executive leadership team is shaping the future of service supply chain management through a powerful blend of experience, innovation, and forward-thinking strategy. With decades of combined expertise and a sharp focus on leveraging technology to solve complex global service supply chain challenges, they’re leading the charge to make them smarter, reliable, and more resilient. Together, they’re not just managing what’s now, they’re building what’s next.

Executive Leadership Sam Mikles
Executive Leadership Sam Mikles

Sam Mikles

PRESIDENT & CEO

As President and CEO of Flash Global, Sam Mikles leads the Company’s evolution as a tech-enabled provider of service supply chain solutions, helping global organizations improve service performance, strengthen logistics operations, and solve complex customer challenges at scale. His board appointments with The Service Council and Vesterra, formerly known as Comvest Private Equity, further reflect his industry leadership, strategic perspective, and commitment to advancing service logistics innovation. With more than 25 years of experience leading growth and transformation across global service and logistics organizations, Sam continues to shape Flash’s strategy, expand global capabilities, and advance solutions built for the complexity of today’s service supply chains. 

As an accomplished and impactful leader, Sam works closely with Flash management to ensure value is realized by customers, employees, partners, and shareholders. He is the leading executive on Flash Global's Board of Directors, formulating best-in-class strategies and solutions for some of the world's largest organizations. He continues to innovate Flash's growth strategy and play an active role in expanding Flash's logistics infrastructure enabling them to serve customers across a wide range of end markets.      

Sam has a wealth of business acumen and brings over two decades of experience in the global service logistics industry, having designed, built, and implemented global service and support solutions for some of the world's most recognizable OEMs in the high-tech space. Under his leadership at Hitachi Data Systems, Symantec previously Blue Coat Systems, and Dell previously EMC, Sam was able to guide his team of employees to design, build, and implement global leading-edge service and support solutions that enable superior performance and directly contribute to the company's revenue acceleration, profitability growth and ultimate customer satisfaction.   

As a pioneer in the logistics and supply chain industries, Sam continues to inspire Flash to create innovative solutions that drive impactful results for our customers. Building upon the momentum of the company's transformational growth, Sam and his executive leadership team continue working to drive value, accelerate profitable growth and improve the service portfolio of the Flash Brand.  

Executive Leadership Dan Silva
Executive Leadership Dan Silva

Dan Silva

Chief Customer Officer

Dan began working at Flash Global in 2015 and brings more than 20 years of business acumen from previous leadership roles with renowned original equipment manufacturers (OEMs) and prominent aftermarket service organizations. Initially, Silva was tasked with developing what is now known as Flash’s Customer Care Team and he was additionally responsible for developing the company’s customer experience business strategy. He has helped Flash drive their high-touch customer service through tech enablement and resource optimization to support a proactive client service model. 

Within a three-year timeframe, Dan’s blueprint adopted business intelligence technology and implemented a customer-centric consultant business model to advance the Customer Satisfaction (CSAT) and Net Promoter Scores (NPS) to the highest in Flash’s history. Moreover, he worked to create a best-in-class status across the global transportation and logistics industries for the organization. 

Dan’s previous experience with service enterprises, operations strategy and key account management helped him to successfully lead business teams focused on customer experience strategies for international organizations. In these earlier roles, Silva’s responsibilities included establishing repair inventory planning applications and operations for enterprise and consumer service models. 

During his career with Flash, Dan intends to explore new methodologies and build upon his prior experience by creating a customer-centric organization that leverages data analytics to drive proactive support options for customers that add value across the global service supply chain. 

In his spare time, Dan enjoys golfing, gardening, and hiking. He also finds pleasure in spending time with family and friends and being a volunteer with the Special Olympics. 

Executive Leadership Denise MacDonnell
Executive Leadership Denise MacDonnell

Denise MacDonell

Chief Technology & Marketing Officer

Denise MacDonell stands as an authority of technological and strategic excellence as Chief Technology & Marketing Officer at Flash Global. As a trailblazer in her field, she understands that success hinges on innovation and advancing technology. Her career is evidenced by turning challenges into opportunities and Denise continues to empower teams to push boundaries, showcasing her capabilities as a visionary leader.

Her career accomplishments underpin her adeptness in navigating the evolving landscape of technology and forging strategic business partnerships. Denise has always been a catalyst for change by revitalizing startups and steering Fortune 100 giants through complex challenges.

In 2016, Denise became Chief Technology Officer at Flash, bringing with her a transformative vision honed over more than 25 years. By 2019, she assumed the role of Chief Marketing Officer and was tasked with driving marketing strategy and spearheading Flash’s brand evolution. At Flash, Denise focuses on leveraging technology, creativity and nurturing talent to cultivate a collaborative, customer-centric company culture.

As the previous Vice President of Product Management at This Technology, Denise shifted the company’s strategic direction from an engineering-centric focus into a leader in product and software innovation. This achievement led to the company’s acquisition by Comcast Corporation in 2015. While at Comcast and as VP of Advertising Software, Denise’s impact continued to evolve, merging technology with business acumen, and ultimately setting the stage for her influential role at Flash.

At Flash, Denise continues to redefine possibilities in technology-driven services by ensuring that innovation serves as an example to help customers make informed business decisions about their existing and future service logistics strategies. As a key member of Flash’s executive leadership team, her strategic insights and contributions to industry-leading publications demonstrate her ongoing commitment to advancing the field and shattering glass ceilings.

Executive Leadership Greg Costello
Executive Leadership Greg Costello

Gregory Castello

Chief Financial Officer

Greg Castello brings almost three decades of financial and operational expertise from numerous thriving global private and public organizations to his position as CFO at Flash Global. His leadership has been instrumental in driving the company's remarkable EBITDA growth and future strategic direction.  

As a prognostic finance executive, Greg has consistently shown his ability to use impactful data insights and analytics to steer strategic direction, resulting in enhanced revenue performance and leverage creation maximizing Flash's performance and potential. Throughout his career and leadership, Greg has successfully orchestrated numerous significant mergers and acquisitions, as well as new investments across a variety of industries including telecommunications, software, financial services, and logistics. 

While at Flash, Greg has led the creation of strategies enhancing Flash's financial health, visibility, profitability, and overall return on investment. As an innovative finance executive at a tech-driven service logistics solutions provider, Greg will continue to focus on adopting and implementing technologies to manage assets, reduce risks, and decrease operational costs. 

Greg is a certified public accountant and has a Six Sigma Green Belt certification.

Executive Leadership Kris Michel
Executive Leadership Kris Michel

Kris Michel

Chief Operating Officer

Kris Michel joined Flash in 2019 as Chief Operating Officer to oversee the company's operations and performance, focused on world-class delivery consistency and technology supported real-time tracking capabilities. Additionally, a company-wide customer service culture was built, supporting an industry-leading breadth of solution offerings.

With a consistent track record for driving revenue acceleration and EBITDA growth, her career has spanned several high-profile roles from Fortune 500 to turnaround mid-sized companies. In every role she has held – from CFO to COO – Kris has a keen instinct for leading teams to implement and execute effective programs and solutions, coupled with her entrepreneurial spirit and global business perspective.  

Throughout her tenured and accomplished career, Kris has frequently led large scale change management initiatives, that directly resulted in step-function improvements in operational performance, margin enhancements, and increased revenue. In her past positions, Kris has been a pioneer in creating a global support organization, by transforming call center and customer service center operations, and identifying scalability and cost saving measures to aid in an exceptional customer experience.  

Kris exemplifies successful leadership through her strategic vision, determination, and sharp business acumen. She embraces the opportunities and challenges that arise as Flash navigates each customer through the dynamic global service supply chain. Her significant contributions to the industry have garnered widespread recognition, including the 2024 DC Velocity Magazine Rainmaker Award and Global Trade Magazine's 2025 Logistics' Leading Ladies Award, both acknowledging her exceptional leadership and innovation in global logistics and supply chain management. 

Connect with Us

Uncover how our solutions and integrated approach to the service supply chain is changing the game.