Shibley Righton LLP names Marlin Horst as Managing Partner
Shibley Righton LLP is pleased to announce the appointment of Marlin Horst as Managing Partner effective June 1, 2026.
June 9, 2026
Associate announcement
Cassels Brock is pleased to announce that Mark St. Cyr has joined the firm's Toronto office as an associate in our Construction Law Group.
February 27, 2014
Mark St. Cyr is an associate in the Construction Law Group at Cassels Brock where he advises construction industry clients at all stages of their projects; from procurement right through to dispute resolution.
In addition to reviewing, drafting and re-allocating risk in construction contracts at the outset of a project, Mark provides ongoing advice on issues such as contract interpretation, non-payment, written notices of lien, and options for termination, among others. In the event a dispute arises at any time during a project, Mark also has experience representing clients in construction lien actions, bidding and tendering disputes, bond actions, as well breach of contract, breach of trust, delay, and deficiency claims.
Mark acts for clients at all levels of the construction pyramid, having previously acted for owners, contractors, subcontractors, suppliers and engineers, among other large (and small) players in the construction industry both inside and outside of Canada. Recently, Mark has assisted multiple American general contractors with their northern migration by producing Canadianized contract packages.
To view Mark’s complete profile, please click here.
Cassels is a Canadian law firm focused on serving the transaction, advocacy and advisory needs of the country's most dynamic business sectors.
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Shibley Righton LLP is pleased to announce the appointment of Marlin Horst as Managing Partner effective June 1, 2026.
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