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Who We Are

PeerSix was conceived to help companies create sustainable, long-term value. While leaders would love a silver bullet, there’s no one-size-fits-all strategy. Companies scale and mature; competitors enter the market; consumer preferences evolve; macro-economic conditions shift. The only constant is change. Responding effectively is easier said than done. After $500M+ in consulting services sold and delivered - across 100 SaaS businesses and 50 of the Fortune 500 - we’ve seen the same challenges get in the way of value time and again. 

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PeerSix is here to help. We’re proven operators with more than 30 years experience helping companies define the right strategy and execute with speed, scale, and agility. We’ve worked across corporate strategy, capital deployment, product strategy, growth and go-to-market, marketing, sales, and value tracking. We’ve also seen how those the challenges impact different roles, having worked as frontline sellers, built and scaled organizations as managers, and driven revenue acceleration as consultants. 

So go ahead, delight your customers and investors at the same time, with PeerSix.

"If I had only one hour to save the world, I would spend fifty-five minutes defining the problem, and only five minutes finding the solution."

-Albert Einstein

Meet the Team

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Lex Hallenberger

Founding Partner

San Francisco, CA, USA

Lex is relentlessly focused on optimization, and wants to create win-win outcomes that are better for everyone. He loves to set the people around him up for success, ensuring they’re more excited, more productive, and more fulfilled in what they do. His friends and family will tell you that “teaching people to fish” isn’t just a phrase, but his way of life. When Lex is not working, you can find him with his family, enjoying the outdoors, or coaching one of his kids' many sports teams.

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Doug Carter

Founding Partner

Palo Alto, CA, USA

Doug is drawn to hard problems where the answer isn't known and the stakes are real. He has spent over two decades advising Fortune 100 companies — dissecting a client's business model, finding the real constraint, and relentlessly targeting value. At heart he's a builder, standing up revenue organizations and new business lines from scratch with skin in the game — whether for clients in SaaS, high-tech, and financial services or for the 165-year-old family ranch he chairs. An engineer by training with an international focus, Doug would rather help you execute than hand off a deck and disappear. When he isn't working, you can find him close to home with his family or out on the ranch.

Do More with Your Dollars. Reach Out or Subscribe, Today.

San Francisco, CA | Chicago, IL

925-285-4700

© 2025 by PeerSix 

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