# Mark Zekulin

> Mark Zekulin is a Canadian lawyer, entrepreneur and investor, currently chairman of Invert and a founding partner at The Greater Return. A founding employee of Tweed, which became Canopy Growth, he served as president, co-CEO and CEO before leaving in December 2019. His career connects regulated markets, company operations and community board work in Ottawa.

- **Role:** Chairman at Invert; Founding Partner at The Greater Return
- **Organizations:** Invert, The Greater Return, Canopy Growth Corporation (former), BC Biocarbon (former chairman), Happy Roots Foundation, Big Brothers Big Sisters of Ottawa (past board president), Ottawa Community Immigrant Services Organization
- **Nationality:** Canadian
- **Education:** Bachelor of Mathematics, University of Waterloo, Bachelor of Laws (LLB), University of Ottawa, Master of Laws, international law, University of Cambridge
- **Known for:** Canada’s Top 40 Under 40 recipient, 2018., Helped lead Canopy Growth during its expansion to more than 4,400 staff across five continents., Held senior leadership roles during Constellation Brands’ 2018 investment announced at C$5 billion.

## Career timeline

- **2008-2010** — Policy adviser to Ontario finance minister Dwight Duncan after legal articles in Ottawa.
- **2010** — Enrolled in postgraduate law studies at Cambridge.
- **2011** — Worked on Dalton McGuinty’s Ontario re-election campaign.
- **2012** — Joined international-trade law firm Cassidy Levy Kent.
- **2013** — Left the firm and joined Tweed as employee number five.
- **2015** — Became president of Tweed.
- **2018-06** — Appointed Canopy Growth co-CEO and named to Canada’s Top 40 Under 40.
- **2019-07** — Became sole CEO following Bruce Linton’s departure.
- **2019-12** — Left Canopy Growth as CEO and director effective December 20.
- **2022-02** — Announced as Invert executive chairman.
- **2025** — Listed as vice-chair in OCISO’s annual report.

## Achievements

- Canada’s Top 40 Under 40 recipient, 2018.
- Helped lead Canopy Growth during its expansion to more than 4,400 staff across five continents.
- Held senior leadership roles during Constellation Brands’ 2018 investment announced at C$5 billion.

## Latest updates

- **2026-10** — Current Invert board page lists him as chairman; The Greater Return biography also identifies him as past chairman of BC Biocarbon. Verified during this research, rather than a newly announced appointment.
- **2025-02** — Attended a Big Brothers Big Sisters of Ottawa breakfast as a former board chair.
- **2024-08** — His Ottawa visitor recommendations were included in Ottawa Business Journal’s weekend guide.

## Links

- Website: https://www.thegreaterreturn.com/
- Twitter/X: https://x.com/mark_zekulin

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Profile page: https://yespress.io/mark-zekulin
Published by YesPress — https://yespress.io
Last updated: 2026-10-25