Mathews Dinsdale Welcomes Keira Ostrosser to the Firm
Mathews Dinsdale is pleased to announce that Keira Ostrosser has joined the Firm as an Associate in our Calgary Office.
September 11, 2026
Associate announcement
WeirFoulds is pleased to welcome associate Natalia Sidlar to the firm's Commercial Litigation Practice Group
March 3, 2021
WeirFoulds is pleased to welcome associate Natalia Sidlar to the firm’s Commercial Litigation Practice Group.
Prior to joining WeirFoulds, Natalia was Crown Counsel in the Advisory Services Group at the Ministry of the Attorney General, Crown Law Office – Civil. In this role she provided advice to various ministries on a wide range of issues including, crown liability, statutory interpretation, administrative and public law and general civil litigation.
Natalia completed her articles with the litigation department of the Crown Law Office – Civil. During her articles, she worked on complex litigation files before all levels of court, including the Supreme Court of Canada.
To learn more about Natalia, click here.
For more than 160 years, the lawyers of WeirFoulds have been proud to serve our clients in their most difficult and complex matters. We are the firm of choice for discerning clients within our core areas of practice: (1) Litigation; (2) Corporate; (3) Property; and (4) Government Law. Within these core areas, as well as key sub-specialties, we address highly sophisticated legal challenges. We have acted in some of Canada's most significant mandates and have represented clients in many landmark cases. Reflecting the firm's focus, our lawyers are consistently recognized as leaders in their chosen areas of practice and in the profession at large.
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Mathews Dinsdale is pleased to announce that Keira Ostrosser has joined the Firm as an Associate in our Calgary Office.
September 11, 2026
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