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Ted Thiessen

Ted Thiessen

Partner, Taxation

Contact Information

tel: 403.260.7055



Bar Admission

Alberta, 2005

  • University of Manitoba, LL.B.
  • University of Manitoba, B.A.

Ted Thiessen is a partner in the Tax Group in the Calgary office. Ted regularly advises Canadian-based multi-national groups and private equity investors on a variety of matters including the tax aspects of corporate mergers and acquisitions, divestitures, reorganizations and financing transactions. Ted’s practice specializes in transactions involving the resource sector, representing a number of clients with upstream and midstream related assets and investments.

Ted’s expertise has been recognized by The Best Lawyers in Canada 2019: Tax Law. Ted is a member of the Canadian Tax Foundation and the Canadian Petroleum Tax Society.

  • SemCAMS

    SemGroup in its $1.8 billion joint venture with KKR including acquisition of Meritage Midstream from Riverstone

  • Apache Canada Ltd.

    Apache Canada Ltd. in three concurrent transactions totaling $927 million

  • Veresen Inc.

    Veresen Inc. in its $9.7 billion arrangement agreement with Pembina Pipeline Corporation

  • 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.

  • Tervita Corporation

    Tervita Corporation completes $3.5 billion recapitalization transaction under the Canada Business Corporations Act

    • Canadian Natural Resources Limited in connection with the sale of certain royalty interests to PrairieSky Royalty Ltd. for $1.8 billion.
    • Veresen Inc. in the formation of a new entity, Veresen Midstream Limited Partnership, equally owned by Veresen and Kohlberg Kravis Roberts & Co. LP, which will acquire certain natural gas assets from Encana Corporation and the Cutbank Ridge Partnership. Osler also represented the partnership in respect to related financing arrangements.
    • Tamarack Valley Energy in its subscription receipts financing of the $168.5 million asset acquisition from Suncor Energy.
    • Assisted with representing the consortium of purchasers of the Phoenix Coyotes National Hockey League franchise in connection with all Canadian legal matters, including the overall ownership governance structure and cross border tax structuring.
    • Basin Tools L.P. in its take-private acquisition of all of the outstanding common shares of Wenzel Downhole Tools Ltd. by way of plan of arrangement.
    • Chevron Canada in the Canadian tax aspects of its acquisition of a 50% interest in the Kitimat LNG Terminal project and the Pacific Trails Pipeline from Encana Corp. and EOG Resources.
    • Kinder Morgan Energy Partners in the Canadian tax aspects of the sale of their interest in the Express-Platte Pipeline System, which was acquired by Spectra Energy Corp. for $1.49 billion.
    • Pembina Pipeline Corporation in its $3.2 billion acquisition of Provident Energy Ltd.
    • Suncor Energy Inc. in its strategic oil sands alliance with Total E&P encompassing the Fort Hills and Joslyn oil sands mining projects and the Voyageur upgrader.
    • Suncor Energy Inc. in its $43 billion merger with Petro-Canada.
    • Nexen Marketing in the disposition of its North American natural gas marketing business.
    • The underwriters in connection with the $175 million issuance of medium term notes by AltaGas Ltd.
    • Enerplus Resources Fund in its strategic business combination with Focus Energy Trust.
    • Kinder Morgan, Inc. in its disposition of Terasen Inc. to Fortis Inc.
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Best Lawyers

  • The Best Lawyers in Canada, 2019: Tax Law.

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

  • The Tax Treatment of Intangibles, Canadian Petroleum Tax Society Annual Conference, June 12, 2012, Calgary (Co-Presenter).