The people
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Working at Supermoon Capital
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On the TechTO stage
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About
Supermoon's premise is that sleep is a very large market that has been little studied and less invested in. Co-founder Mike Masterson told TechTO in October 2026 that the idea came from partner Pat Connolly, who spent nearly four decades at Williams-Sonoma and saw fast growth in anything bedroom-related, around the time Whoop, Oura and the Apple Watch arrived. The firm says it is accelerating innovation in sleep and circadian health, and backs founders from software, hardware and life sciences.
The firm launched publicly on 25 August 2021 with a first fund of US$36 million and ResMed, the sleep apnea device maker, as a named investor. Masterson said on stage that the partners had started work in 2019, that the largest strategic investor in sleep joined at the first fund's final close, and that Supermoon recently held a first close on its second fund; no second fund has been announced in writing.
Supermoon is not a Canadian firm. It appears here because Masterson spoke on the TechTO stage.
Backers
ResMed is the named investor in the US$36 million first fund (launch release, 2021-08-25). Other limited partners are not disclosed.
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Quick answers
What does Supermoon Capital invest in?
Only sleep and circadian health, at pre-seed and seed, anywhere in the world. Its portfolio includes Endel, EnsoData, Mosanna Therapeutics, Big Health and Arcascope.
Who founded it?
Mike Masterson, Pat Connolly and Grayson Judge. The launch release of 25 August 2021 names all three as co-founders and managing partners.
How big is the fund?
The first fund was US$36 million, announced in August 2021. Masterson told TechTO in October 2026 that a second fund had held a first close; its size has not been published.
Who from Supermoon Capital has spoken at TechTO?
Mike Masterson, in October 2026, on the mistakes founders make when pitching investors and what raising a fund in a new category taught him.