
About Treez
Our vision at Treez is to power the global cannabis economy. We’re relentlessly focused on providing technology and insights that fuel the cannabis industry’s global growth.
Our Story

Leadership Team

John Yang
Founder & co-CEO
John Yang is a cannabis technology pioneer who founded Treez in 2016 to transform how retailers operate and grow. As co-CEO, he has led the company through rapid growth and industry-defining innovations, building Treez into one of the most trusted commerce platforms in cannabis retail serving over a dozen states. His current focus is leading the company's artificial intelligence initiatives, building the next generation of operational intelligence for retail. Before founding Treez, John developed his expertise in technology and business operations at Accenture and Slalom Consulting.

David Yan
co-CEO
David joined in late 2019 as the CFO and has been a central part of the company's growth, strategy and operations. In his expanded role as co-CEO David oversees the company's core business. He brings deep expertise in SaaS and Fintech and scaling businesses having held both financial and executive leadership roles at Wrike (acquired by Vista) and Oto Analytics. David also held finance roles at Twitter, led S-1 creation at ForeScout, and has worked across a range of high-growth software businesses after starting his career at KPMG. In 2023 he was named to Finance & Investing magazine's list of Top 25 Software CFOs to Watch, recognizing excellence in financial leadership across the software sector.

Ethan Chong
CTO & SVP of Product Engineering
Ethan Chong has led Treez's engineering organization through multiple phases of growth, delivering the scalability, security, and speed required to compete in a regulated market. He oversees both engineering and product engineering, unifying technical execution under a single leadership mandate. He builds high-performing, cross-border teams and delivers complex SaaS, IoT, and retail platforms that meet both customer and compliance demands. At Treez, he has driven platform upgrades that modernized architecture, strengthened security and compliance, and accelerated the delivery of new capabilities. His leadership at Treez spans teams in the US, Canada, and India. Prior to Treez, Ethan led engineering at Awair, Grocery Outlet, and GE Digital after starting his career in technology consulting with Accenture and IBM.
Shareef El-Sissi
Co-Founder
Rich Thorne
Head of Product
Joey Sterling
VP of Product
Hailey Matos
Head of Customer Success
Josh Lamb
VP of Sales
Brian Tran
VP of Finance
2025
Launch of Treez Loyalty
Rolled out Treez Loyalty, giving retailers an AI-powered, app-free solution to drive repeat business through digital wallets.

2025
Expansion into New York, Texas, and Maryland
Entered three of the largest and fastest-growing markets in the U.S.

2024
Acquisition of Gap Commerce Unlocks Full Online-to-Offline Retail
With the Dec 2024 acquisition of Gap Commerce, we expanded our product suite to give retailers everything they need to operate, grow, and profit. With the launch of our ecommerce platform, we’re bridging the gap between online sales and dispensary operations, creating a seamless connection just as integrated as our point of sale system.

2023
Acquisition of Swifter
To extend our leadership in TreezPay and cashless payments, we acquired Swifter, a Y Combinator–backed fintech startup based in Bangalore. Through this acquisition, we accelerated development of our industry-leading fintech ecosystem including the launch of the TreezPay Gateway and reinforced our position in integrated retail finance.

2023
Now serving 12 states
After closing our Series C funding, Treez continues to expand to new US markets.
In 2023, we proudly served businesses in Arizona, California, Colorado, Illinois, Maine, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nevada, and New Jersey.

2022
Treez establishes software development operations in India
Established dedicated software development operations in India to expand product velocity and engineering scale.

2023
Treez Raises $51M in Series C
Treez completed a $51 million Series C round led by institutional growth equity firm Long Ridge Equity Partners, joined by new institutional investors Kayne Anderson and Synchrony, with participation from existing investors.

2020
Canada Engineering Hub Launched
Established Canadian development team to support early platform expansion and global talent growth.

2020
Insights and payments
We expand our product offerings to better serve dispensary retail businesses with cashless payments, powered by TreezPay. Treez also closes a Series B round of funding.

2018
Treez raises $11.5 million
By 2018, Treez was processing 15% of total cannabis sales across California. Our growing footprint allowed us to close our Series A funding.

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