About Arithmic Capital

Hi, I’m Gabe Lumby, the founder of Arithmic Capital.

Hi, I’m Gabe Lumby, the founder of Arithmic Capital.

I’ve spent my professional career trying to help small businesses thrive - first as a CPA (inactive license), then as a consultant, later as an operator, and now as an acquirer and long-term steward. Entrepreneurship has been part of my life for as long as I can remember. I mowed lawns in high school, flipped tech products in college, launched a financial education site, built and sold an accounting firm, and served as COO & CFO of a $10M/year agency.

Through all of those experiences, I’ve come to see my core gifting as business architecture -the ability to synthesize the three foundational functions of any company (sales/marketing, administration, and operations) so the business can operate with health, clarity, and momentum.

I founded Arithmic Capital with a simple mission: to acquire great small businesses and operate them with integrity, care, and a long-term view that benefits all stakeholders.

Outside of work, I’m happily married to my wife, Brittany. We have two sons - Luke (13) and Tate (10). We love watching and coaching their sports teams, spending time with close friends, and serving together at our local church - The Summit.

If our approach resonates with you, let’s talk. We’re always open to meaningful conversations with owners, operators, and like-minded investors.

If our approach resonates with you, let’s talk. We’re always open to meaningful conversations with owners, operators, and like-minded investors.