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Colena Der

Colena Der

Partner, Taxation

Contact Information

cder@osler.com

tel: 403.260.7049

Office

Calgary

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Areas of Expertise
Bar Admission

Alberta, 2009

Education
  • University of Ottawa, LL.B.
  • University of Alberta, B.Sc. (Hons.) (Pharmacology)
Language(s)
English

Colena’s practice focuses on advising Canadian and foreign-based clients on the taxation of mergers and acquisitions, corporate reorganizations and employee and executive compensation matters, with an emphasis on the resource, emerging companies and technology sectors.  Her tax practice also includes the settlement of tax disputes with the Canada Revenue Agency.

Colena is a member of the Canadian Bar Association, Calgary Bar Association, the Canadian Tax Foundation and the Canadian Petroleum Tax Society. She was a former member of the Canadian Tax Foundation - Young Practitioners' Steering Committee (Calgary) and the Past-Chair of the Executive Committee of the Canadian Bar Association’s Taxation Specialists (South). 

  • Nine Energy Service Inc.

    Canadian counsel to Kirkland & Ellis LLP in Nine Energy Service Inc.’s acquisition of Magnum Oil Tools International

  • Clio

    Clio in its acquisition of Lexicata

  • Hubdoc Inc.

    Hubdoc Inc. in its acquisition by Xero

  • Interaxon Inc.

    Interaxon Inc. in its acquisition of Meditation Studio

  • China Gold International Resources Corp.

    China Gold International Resources Corp. in its US$500 million bond offering

  • Layer 6 Inc.

    Layer 6 Inc. in its acquisition by the Toronto-Dominion Bank

  • First Nations Finance Authority

    First Nations Finance Authority in its $126,000,000 offering of 3.05% Senior Secured Bonds, Series 2017-1, due June 1, 2028

  • Scribble Technologies Inc.

    Scribble Technologies Inc. in its acquisition of ion interactive, inc., an interactive content platform provider

  • ConocoPhillips

    ConocoPhillips in the sale of its interest in the Foster Creek Christina Lake (FCCL) oil sands partnership, as well as the majority of its western Canada Deep Basin gas assets, to Cenovus for total proceeds of C $17.7 billion.

  • Professor Raquel Urtasun

    Professor Raquel Urtasun in her hiring by Uber to lead a new Toronto-based research and development centre for its Advanced Technologies Group

    • Mitel Networks on its acquisition of Aastra Technologies
    • Angle Energy Inc. In its proposed $576 million acquisition by Bellatrix Exploration Ltd.
    • Total E&P Canada Ltd. on the agreement to sell its 49% interest in the Voyageur Upgrader Limited Partnership to Suncor Energy Inc.
    • Greengate Power Corporation on all aspects of the development of the 300 MW Blackspring Ridge Wind Project and the sale of the Blackspring Ridge Project to Enbridge Inc. and EDF EN Canada Inc.
    • Golden Crescent Investments Ltd., an affiliate of Citadel Capital, in its proposed sale of National Petroleum Company Egypt Limited, to Sea Dragon Energy Inc.
    • SCF Partners in its acquisition of Integrated Production Services
    • Thule Group of Sweden on its acquisition of Chariot Carriers
    • Glam Media Inc. In its cross border acquisition of BBS Media
    • Investment Technology Group, Inc. In its $38.5 million acquisition of a private independent research brokerage firm
    • Temple Energy Inc. In its “merger of equals” with Cequence Energy Ltd.
    • Kulczyk Oil Ventures Inc. In its European initial public offering and acquisition of Triton Hydrocarbons Pty Ltd., an Australian company
  • Find More

International Tax Review

  • International Tax Review: Women in Tax, 2017-2019: recognized as a Highly Regarded lawyer.

  • Law Society of Alberta
  • Canadian Bar Association
  • Canadian Tax Foundation
  • Canadian Petroleum Tax Society