David Jamieson

David Jamieson

Partner, Emerging and High Growth Companies

Key Contact: Emerging and High Growth Companies

Key Contact: Venture Capital

Contact Information


tel: 416.862.4853



Bar Admission

Ontario, 2011


  • Queen’s University, J.D.
  • McGill University, Bachelor of Commerce


English, French

David is a partner in Osler’s Corporate and Emerging and High Growth Companies Practice Groups in our Toronto office. David’s practice focuses on corporate finance, mergers and acquisitions and general corporate/commercial matters, with a particular emphasis on the representation of emerging and high growth companies (throughout their lifecycles), the venture capital, growth equity and private equity funds and other investors that finance them and the strategic acquirors who buy them. David is broadly experienced with corporate formation and governance matters, venture capital and private equity financing transactions and a variety of acquisition and divestiture transaction structures on both the buy and sell side.

David plays a central role in Osler’s relationships with Rotman’s Creative Destruction Lab, Next Canada (including Next AI, Next 36 and Next Founders) and the C100.

David completed his J.D. degree at Queen’s University and obtained his Bachelor of Commerce from McGill University, with a concentration in Entrepreneurial Studies. During his studies, David participated in study abroad exchanges at Sydney University (Australia), the Queen’s International Study Centre (England) and the Université libre de Bruxelles (Belgium).

  • Accomplice and JPMorgan Chase

    Accomplice and JPMorgan Chase in FreshBooks’ US$130 million Series E financing

  • Buildable

    Buildable in its financing round

  • Hootsuite

    Hootsuite in its $60 million acquisition of Heyday

  • Canadian Business Growth Fund

    Canadian Business Growth Fund in its minority equity investment in Connected Lab

  • PartnerStack

    PartnerStack in its US$29 million Series B financing round

  • Ten Coves

    Ten Coves in 7Shifts’ US$21.5 million Series B financing round


    ALT TEX in its pre-seed financing

  • Agnostiq

    Agnostiq in its financing round

  • Loopio Inc.

    Loopio in its US$200 million strategic investment

  • Canadian Business Growth Fund

    Canadian Business Growth Fund in Paystone’s financing

  • Willow

    Willow in its seed financing round

  • Prophix Software

    Prophix Software in its investment by Hg

  • Neo Financial

    Neo Financial in its $50 million financing round

  • IBM

    IBM in its acquisition of Expertus

  • Borrowell

    Borrowell’s acquisition of Refresh Financial

  • Setter

    Setter in its acquisition by Thumbtack

  • Verafin

    Verafin in its US$2.75 billion acquisition by Nasdaq

  • Closing Folders

    Closing Folders in its acquisition by iManage

  • ESC Corporate Services

    ESC Corporate Services in its acquisition of Paragon

  • Fairhaven Pharmaceuticals

    Fairhaven Pharmaceuticals in its acquisition by Liminal BioSciences

  • ThoughtWire

    ThoughtWire in its minority investment by Canadian Business Growth Fund

  • Canadian Business Growth Fund

    Canadian Business Growth Fund in its growth equity investment in MaxSold

  • FundThrough

    FundThrough in its $8 million Series A extension

  • Sinclair Interplanetary

    Sinclair Interplanetary in its acquisition by Rocket Lab

  • Security Compass

    Security Compass in its growth equity funding by FTV Capital

    • SkyWatch Space Applications Inc. in its $10 million Series A financing round
    • Meta in connection with its acquisition by Chan Zuckerberg Initiative.
    • Insception Biosciences in connection with its sale to Cell Care, and its prior acquisition of Lifebank by way of takeover bid.
    • ScribbleLive in connection with its expansion round of financing and acquisitions of Appinions, Visually, Scompler and Linkdex.
    • Ontario Teachers’ Pension Plan in connection with the sale of its interest in Q9 Networks to Bell Canada.
    • GROWMARK in the purchase of Suncor’s 50% interest in UPI, Inc.
    • Emera Incorporated in connection with the acquisition by Emera (Barbados) Holdings No. 2 Inc. of Emera (Caribbean) Incorporated by way of takeover bid.
    • Blynk in connection with its acquisition by Kik Interactive Inc.
    • Tim Hortons in connection with its $13 billion acquisition by an affiliate of Burger King Worldwide, Inc.
    • Universe in connection with its sale to Ticketmaster.
    • Affinium Pharmaceuticals in connection with its sale to Debiopharm.
    • IBM in connection with its acquisition of Varicent Software and Platform Computing.
    • TMX Group in connection with the formation of FTSE TMX Debt Capital Markets joint venture with FTSE.
    • Zelnick Media in its investment in 9 Story Limited.
    • KingSett Capital in its take-over bid for Primaris Retail REIT and, ultimately, $5.0 billion friendly plan of arrangement with H&R REIT and Primaris.
    • Livingston International in its cross-border high yield debt refinancing.
    • RHO Capital and Horizons Ventures in their investments in emerging companies.
    • Numerous emerging technology companies and venture capital and angel investors in connection with various financing transactions.
  • Find More

  • NEXT Canada, Next 36, Next Founders and NextAI
  • Creative Destruction Lab - University of Toronto
  • Big Brothers Big Sisters Canada, Big Brothers Big Sisters Toronto

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