Team

Leadership Team, Behind the Vision

Seasoned operators with a singular mission: elevate every pour, every place, every time.

Andy Klosterman

Andy Klosterman

Founder & CEO

Andy Klosterman

Andy Klosterman founded Peak Beverage in 2012 with $3,000, a notebook full of ideas, and a belief that the bar should be the heart—not just the overhead—of every event. A former bartender, Andy brings firsthand operational grit paired with sharp entrepreneurial instincts. He’s built Peak into a multi-market leader by scaling logistics, nurturing strategic partnerships, and investing early in team culture. Under his leadership, Peak has grown from a garage startup into a full-service bar provider trusted by global brands, iconic venues, and thousands of event hosts. Andy’s approach blends data-driven decision-making with hospitality flair, empowering his team to deliver unforgettable experiences while maintaining strong margins. He’s as passionate about building systems as he is about building people—and believes the best companies make both scalable.

Peak Beverage President Mike Hartman

Mike Hartman

President

Mike Hartman

Mike Hartman serves as President of Peak Beverage, where he leads the company's operations, finance, and growth strategies across all markets. He brings a rare combination of regulatory and financial depth to the beverage and events industry. As Executive Director of the Colorado Department of Revenue, Mike served as Colorado's State Licensing Authority, overseeing liquor licensing and enforcement statewide — giving him a firsthand understanding of the rules that govern every pour Peak serves.

He most recently served as Chief of Staff and Interim CFO at Denver's Economic Development and Opportunity agency. Before his time in public service, he spent 15 years in institutional leveraged finance, underwriting and structuring leveraged buyouts for private equity funds. That background shapes how he runs Peak: disciplined on margins, rigorous on compliance, and focused on building systems that let the team scale without losing the hospitality that makes events memorable.

Bill Robertson

Bill Robertson

Chief Operating Officer

Bill Robertson

Bill brings a proven track record of operational leadership and building dynamic teams that excel across the hospitality spectrum—from intimate weddings to high-volume festivals and major concerts. His comprehensive expertise in hospitality operations, including sophisticated beverage management and strategic cost controls, empowers the company to balance the needs of clients, guests, and staff, cultivating a culture of accountability and continuous improvement. Bill’s unwavering commitment to seamless execution ensures that every guest experience is meticulously supported; every pour and every interaction runs efficiently and professionally, regardless of the event’s size or complexity.

Jack Holbrook

Jack Holbrook

Chief Financial Officer

Jack Holbrook

With over 20 years of experience in accounting and finance, Jack Holbrook serves as the Chief Financial Officer, guiding the organization’s strategic growth and financial operations. He has deep expertise in financial planning, reporting, and process optimization to ensure robust and compliant financial systems. Jack brings his prior experience of scaling from small startup to profitable middle market business, personally leading the development and implementation of finance and reporting systems essential for rapid expansion. Throughout his career, Jack has been an integral part of very successful finance and operational teams, contributing significantly to their achievements while partnering closely with executive leadership to deliver measurable results. He is known for his commitment to the long-term vision and continuous innovation, contributing to long-term financial success. Driven by a passion for data-driven insights, Jack supports bold business strategies and identifies new opportunities for value creation.

Natalie Sharp

Natalie Sharp

VP of Sales & Marketing

Natalie Sharp

Natalie Sharp is a dynamic and relationship-driven leader with a global perspective and a proven track record of delivering exceptional customer experiences across the events, hospitality, and beverage industries. As the Head of Sales and Marketing at Peak Beverage, she has led high-impact partnerships with premier venues and large-scale events nationally. Drawing on her international exposure and cross-cultural acumen, Natalie approaches every client engagement with a service-first mindset, strategic insight, and a commitment to excellence. Whether managing complex activations or building long-term programs, she is known for her responsiveness, transparency, and unwavering dedication to client success.

Myles Fisher

Myles Fisher

VP of Food & Beverage

Myles Fisher

Myles Fischer is a relationship-driven leader with a proven track record in hospitality and beverage. As VP of Food and Beverage at Peak, he leads innovation in service, menu design, and event concepts—consistently elevating client experiences. With over two decades in kitchens, bars, and executive roles, Myles brings bold creative direction and sharp operational expertise.

From launching ventures to leading high-profile events like the Mytheresa VIP experience in Aspen, Myles approaches every challenge with strategic insight and a commitment to excellence. Motivated by growth and collaboration, he is known for his responsiveness, client focus, and ability to turn bold ideas into unforgettable experiences.

Market Leaders, Hospitality in Action

These are the people making things happen on the ground—market leaders, client connectors, and brand builders who ensure that every event is thoughtfully executed, every partnership feels personal, and every drink tells a story.

Ariel Gonzales

Ariel Gonzales

General Manager, Texas

Ariel Gonzales

Based in Austin, Ariel leads our Texas operations with an unmatched attention to detail and a passion for service. From high-end weddings to large-scale festivals, she ensures every event runs seamlessly and every team member delivers Peak-level hospitality.

Brian Davis

Brian Davis

General Manager, Colorado

Brian Davis

With deep experience in event logistics and team leadership, Brian oversees our Colorado market with a steady hand and a sharp eye. Whether it’s managing a busy weekend of events or supporting long-standing venue partners, he’s all about consistency, efficiency, and great guest experiences.