Mark I. Young

Mark I. Young
Telephone: 416 869 5380
Fax: 416 350 6902

Suite 2100, Scotia Plaza
40 King Street West
Toronto, ON M5H 3C2

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Mark Young* is the firm’s immediate past Managing Partner, having held that position for 17 years and serving throughout that term on the firm’s key partnership committees, including its Executive Committee.

Under Mark’s leadership as Managing Partner, Cassels Brock added to its Toronto business base by opening offices in both Vancouver and Calgary, and strengthened its position as a leading business law firm in Canada which provides legal and business solutions to multinational, national, regional and local entities.

In addition, Mark co-founded FourLines, a business division of Cassels Brock that assesses, pilots, and implements specialized staffing models, streamlined workflows, and the most current technology in order to improve both the quality and timeliness of the firm’s corporate and transaction-based legal advice and related services.

Drawing on his management experience, coupled with his practice background in public and private mergers and acquisitions, corporate reorganizations and the financing strategies applicable to such transactions, Mark now provides strategic legal advice to key clients of the firm in a variety of sectors, including private equity and pension fund investments, higher education and mining.

Mark continues to assist in the management of the firm, lending his experience and expertise to special projects in areas such as industry and client team building, innovation and process improvement, and associate development and retention.

Mark is a member of the firm’s Inclusion & Diversity Committee, chairs the firm’s Corporate Responsibility Committee and serves as a member of the Canadian General Counsel Awards Advisory Board and the Lexpert Rising Stars Advisory Board.

*denotes Professional Corporation


Osgoode Hall Law School, LL.B., 1978

Call to the bar

Ontario, 1980


  • Canadian Bar Association
  • Ontario Bar Association


  • Finalist, "Outstanding Lawyer of the Year," Changing Lawyer Awards (2018)


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