The world's first regulated exchange for trading security tokens


Boston Security Token Exchange LLC (“BSTX”) is designing the world’s first regulated exchange for trading security tokens. The trading platform is powered by tZERO technology. BSTX is jointly owned by BOX Digital Markets and tZERO.


Powered by tZERO and BOX Digital Markets


Board of directors

Susan Chamberlin

chair | president & CEO, Warhawk Fund

Susan Chamberlin is the president and CEO of Warhawk Fund, an early-stage investment fund. She also serves…learn more

Lisa J. Fall

CEO, BOX Digital Markets & BSTX

Lisa J. Fall, Esq. is Chief Executive Officer of BOX Digital Markets LLC and Boston Security Token Exchange LLC, both formed in 2018…learn more

William Easley

Vice Chairman, BOX holdings group

William Easley has been with BOX since its inception, joining as Project Manager in September 2001, and is presently Vice Chairman…learn more

Steve Hopkins

president, TZERO

Steve Hopkins joined tZERO as President in January 2019 from Medici Ventures where he had worked as COO…learn more

Saum Noursalehi


Saum Noursalehi is the CEO of tZERO, a global leader in the development and commercialization of blockchain-based financial technology. As CEO, Noursalehi’s focus is on…learn more


Building a world-class platform with blockchain innovation and securities marketplace expertise




tZERO, Inc. (“tZERO“) is a majority owned subsidiary of, focusing on the development and commercialization of financial technology (FinTech) based on cryptographically-secured, decentralized ledgers – more commonly known as blockchain technologies. Since its inception, tZERO has pioneered the effort to bring greater efficiency and transparency to capital markets through the integration of blockchain technology.

BOX Digital Markets

BOX Digital Markets LLC is engaged in creating and developing markets for trading digital assets in a regulated environment. BOX Digital is a subsidiary of BOX Holdings Group LLC, which owns and operates BOX Options Market LLC, an equity options marketplace and a facility of BOX Exchange LLC. BOX Exchange is a Registered National Securities Exchange under Section 6 of the Securities Exchange Act of 1934. Pending regulatory approval, BSTX will operate as a facility of BOX Exchange.



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