Form4insider filings, from the source

SEC Form 4 · accession 0001104659-17-030757

Summit Materials, Inc. · SUM

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

Reporting owner
Period of report
May 4, 2017
Accepted (ET)
May 8, 2017 · 6:10 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 StockF1May 4, 2017C7,000—A21,663D
Class A Common StockMay 5, 2017S7,000$28.69D14,663D

Table II — derivative securities

SecurityConv. / exercise priceDateCodeSharesA/DExercisableExpiresUnderlyingUnderlying sharesOwned afterD/I
LP Units of Summit Materials Holdings L.P.F1—May 4, 2017C7,000D——Class A Common Stock7,0004,274D

Explanation of responses