We are all about your vision.

Who We Are

We hate when preventable problems kill a founder's vision.
Greenhouse exists to enable leaders to accomplish their personal visions for their organizations and ideas.

We operate on a few core beliefs: 
- Every founder has a unique vision.
- Every business has a unique path.
- Unhealthy growth wrecks businesses.
- Proactive finance is vital to healthy growth.

The Greenhouse team has served 100's of entrepreneurs and leaders in a variety of industries who have an e-commerce sales channel: consumer packed goods (CPG), SaaS, non-profit, professional services, and consumer packed goods (CPG).

Our Team

Mark Lupton - Director & Outsourced CFO

Mark founded Greenhouse to free founders from being stuck through CFO partnership. As an analyst for a small business consulting firm, he focused on helping 7-figure+ e-commerce businesses scale. After becoming a partner in the firm, Mark provided various management consulting services to growing organizations (outsourced CFO, FP&A analyst, and executive advisor to CEO's) in multiple industries. In that time he also helped several small businesses and non-profit clients land multi-million dollar raises through supporting the financial part of the process.

Prior to that he received an undergraduate degree in engineering, served as an engineer for a Global Fortune 300 company and received an MBA with distinction concentrating on entrepreneurship and finance.

Sharon Custer - Inventory Specialist & Financial Analyst

Sharon is a seasoned consumer goods entrepreneur with deep inventory management experience from a Fortune 100 company. She is world traveler and is fluent in Chinese, English and almost Spanish. She has certifications in Quickbooks Online, Fathom, NASBA Certification of Inventory Management, and a Certified Lean Six Sigma Green Belt. She also runs her own consulting firm, Inventory Optimization Pro, for solving complex inventory issues. She has undergraduate degrees in both Marketing and Chemical Engineering.

Bethany Bontrager - Financial Operations & Systems Specialist

Bethany has 18 yrs of experience in a variety business administration roles from cofounding a SaaS company to managing operations of a premier ski resort. In the process she has become an expert in back office operations and systems for small businesses and start-ups. Over the years, she has helped dozens of growing organizations identify, setup and manage their back-office systems and tools. Her specialties include back office process design and SOP's, Payroll administration, accounts receivable, invoicing, collections, accounts payable, bill pay and cash management/tracking.