Summit Materials, Inc.

PICTON MAHONEY ASSET MANAGEMENT SUM

Report date

12/31/2024

Quarter

2024 Q4

Filed

4/2/2025

Shares

590,000

Value ($000)

29,854

Weight

1.1%

2024 Q4 - 2024 Q4 (1 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2024 Q4	4/2/2025	29,854	1.1%	590,000	12/31/2024