Konstantin (Kosta) Starostin

Konstantin (Kosta) Starostin

Associate, Emerging and High Growth Companies

Contact Information


tel: 416.862.6812



Bar Admission

Ontario, 2016


  • University of Alberta, JD
  • McMaster University, B.Comm (Honours)


English, Russian

Konstantin (Kosta) Starostin has a transactional practice focused on mergers and acquisitions, venture capital, technology, corporate financing and general corporate matters. Kosta represents companies at all stages of growth and complexity and has extensive experience advising clients on matters related to corporate structuring, equity and debt financing, corporate governance, technology, mergers and acquisitions and securities law.

Prior to joining Osler, Kosta worked in the corporate group of a leading Canadian law firm, where he focused on mergers and acquisitions, corporate financing, technology and securities law.

  • ESI Technologies

    ESI Technologies in its partnership and significant investment in Solsys

  • Higher Logic

    Higher Logic in its acquisition of Vanilla

  • Forma.ai

    Forma.ai in its US$10 million financing round

  • ChargeLab

    ChargeLab in its US$4.3 million seed round

  • Neo Financial

    Neo Financial in its $50 million financing round

  • IBM

    IBM in its acquisition of Expertus

  • Verafin

    Verafin in its US$2.75 billion acquisition by Nasdaq

  • Canvass Analytics

    Canvass Analytics in its US$6.5 million financing round

  • Synex Medical

    Synex Medical in its $5.25 million Seed financing round

  • Achievers

    Achievers in its acquisition of TemboSocial

  • Attabotics

    Attabotics in its US$50 million Series C financing round

  • Fairhaven Pharmaceuticals

    Fairhaven Pharmaceuticals in its acquisition by Liminal BioSciences

  • Drive Capital

    Drive Capital in KOHO Financial’s $25 million Series C financing round

  • Accel

    Accel in 1Password's US$200 million Series A financing round

  • Kensington Venture Fund

    Kensington Venture Fund in Pela’s $5 million Series A financing 

  • Verafin

    Verafin in its $515 million venture funding - the largest venture funding deal in Canada’s history

    • 123 Dentist in connection with a $75 million investment by Peloton Capital Management.
    • BrandProtect in its share sale and merger of business operations with PhishLabs.
    • Flexiti Financial in its acquisition of TD Bank’s private label credit card portfolio.
    • Daseke (NASDAQ: DSKE) in its acquisition of Aveda Transportation and Energy Services Inc.
    • Neura Transport in connection with its share sale and business combination with US- based TexTrail, Inc.
  • Find More

  • Community Food Centres Canada (CFCC), Events Volunteer
  • CFCC, Young Professionals Association Member

  • Law Society of Ontario
  • Canadian Bar Association
  • Ontario Bar Association

  • Ontario’s Rules for Distributing Securities Abroad: How They May Impact Security Token Offerings, April 4, 2018
  • Cybersecurity Considerations When Moving to the Cloud – Part 2, March 23, 2018
  • Cybersecurity Considerations When Moving to the Cloud – Part 1, March 16, 2018
  • The Phantom of Single Game Betting in Canada, Canadian Gaming Lawyer Magazine, Summer 2017