About Aust Legal (Aust LLP)

Aust Legal, also known as Aust LLP, is a small business law firm headquartered in Montreal, with a second office in Toronto. Thomas Laporte Aust founded the firm in 2010 after leaving McCarthy Tetrault, one of Canada's national law firms. The firm positions itself as an alternative to the national firm model, and its work centres on mergers and acquisitions, private equity and venture capital financing, due diligence, corporate governance, and executive employment law.

The team is small by design. Alongside the founder, it includes lawyers, of counsel, and two senior advisors who spent decades at other national law firms before joining Aust Legal, plus paralegals and support staff across both offices. The firm operates in English and French. It also publishes a running list of client transactions it has advised on, spanning acquisitions, financings, and corporate reorganizations for companies in technology, health services, and industrial sectors.

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This firm’s lawyers at a glance

Called to the bar
1985–2025 · median 9 years in practice 7 of 9 lawyers
Law schools
University of Montreal (3), Université Laval (2), Dalhousie University, University of Ottawa 7 of 9 lawyers
Languages on the roster
English, French, Italian, Spanish

Offices 2

1010 de la Gauchetière O., suite 1350, Montreal, QC H3B 2N2

3 Bridgman Ave, suite 200, Toronto, ON M5R 3V4

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This listing was generated by AI from public sources in July 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Barreau du Québec directory ↗

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