Form4insider filings, from the source

SEC Form 4 · accession 0001104659-17-036643

Summit Materials, Inc. · SUM

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

Reporting owner
Period of report
May 26, 2017
Accepted (ET)
May 31, 2017 · 6:00 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 StockMay 26, 2017M4,647$0.00A4,647D

Table II — derivative securities

SecurityConv. / exercise priceDateCodeSharesA/DExercisableExpiresUnderlyingUnderlying sharesOwned afterD/I
Restricted Stock UnitsF1,F2—May 26, 2017M4,647D——Class A Common Stock4,6470D

Explanation of responses