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Brennan Spellacy

Co-Founder & CEO


Brennan is the CEO & Co-Founder of Patch, the platform for negative emissions. Prior to founding Patch, Brennan worked in a range of product & engineering roles at Sonder and Shopify. Brennan founded Patch in early 2020, along with Aaron Grunfeld. They are two Canadian entrepreneurs who were brought together by a joint mission to tackle climate change. Patch was officially launched in San Francisco in April 2020, and today works with dozens of customers & partners across North America, Europe & Asia. Brennan studied chemical engineering at McGill University and has been featured on various podcasts and keynote speaking events as an expert on climate and carbon markets.

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Saving the planet with every transaction, meet the ESG superheroes of fintech