27 results
8-K
EX-10.1
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19 May 21
Summit Materials Announces Appointment of Tamla Oates-Forney to Board of Directors
4:30pm
8-K
EX-10.2
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19 May 21
Summit Materials Announces Appointment of Tamla Oates-Forney to Board of Directors
4:30pm
DEFA14A
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6 May 21
Additional proxy soliciting materials
9:42pm
PRE 14A
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9 Mar 21
Preliminary proxy
5:27pm