Form4insider filings, from the source

SEC Form 4 · accession 0001104659-18-050228

Summit Materials, Inc. · SUM

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner
Karl Watson
Officer — EVP & Chief Operating Officer
Period of report
Aug 3, 2018
Accepted (ET)
Aug 7, 2018 · 6:25 pm EDT
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001621563

Table I — non-derivative securities

SecurityDateCodeSharesPriceA/DOwned afterD/INature of ownership
Class A Common StockF1Aug 3, 2018P23,700$21.13A23,700D
Class A Common StockAug 3, 2018P11,800$21.19A35,500D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses