Managing Partner

Steve Berg
(617) 630-2416

I spend my time at Castanea finding new investment opportunities, overseeing teams, and working alongside our partner companies.

As a managing partner, I’m also involved in the strategy and management of the firm.

I joined Castanea in 2002 soon after the firm launched. Prior to Castanea, I worked in the private equity group at Bain Capital, where I was involved with larger consumer and retail brands. I came to Castanea for a couple of reasons. First, because I wanted to work with entrepreneurs at an earlier stage in their companies’ development to help them build their businesses. And second, because I believed in the value of the operating approach that Castanea’s founders were pursuing.

I’ve had the privilege of working with many fantastic brands and alongside amazing founders. My involvement with past investments includes Fuze Beverage, Hanna Andersson, and Urban Decay Cosmetics. I’m currently working with Drybar, Tatcha, MacKenzie-Childs (Aurora Brands), Jeni’s Splendid Ice Creams, and The Bruery.

I received an MBA from Wharton but am a Wolverine at heart: I grew up outside Detroit, studied engineering at the University of Michigan, and married a Michigan gal (and fellow Wolverine).


Drybar is a leading haircare brand with its own retail outlets and a branded line of products and styling accessories sold through its own and third-party retail stores.

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Tatcha’s luxury skincare products are inspired by Japanese beauty rituals.

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MacKenzie-Childs is a designer and marketer of luxury home furnishings and personal accessories sold direct-to-consumer through the company’s catalog, website, and company-owned stores, as well as leading home retailers.

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Jeni’s is a modern American ice cream company with over 30 scoop shops, growing distribution in top grocery stores across the country, and an online store.

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The Bruery is a producer of premium specialty craft beers. The company specializes in barrel-aged and sour beers, and creates complex flavors from simple ingredients.

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