Form4insider filings, from the source

SEC Form 4 · accession 0001104659-19-010828

Summit Materials, Inc. · SUM

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

Reporting owner
Brian James Harris
Officer — EVP & Chief Financial Officer
Period of report
Feb 24, 2019
Accepted (ET)
Feb 26, 2019 · 8:27 pm EST
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 StockF1Feb 24, 2019M5,677—A82,261D
Class A Common StockFeb 24, 2019F1,899$17.54D80,362D
Class A Common StockF2holding———60,000ISee Footnote

Table II — derivative securities

SecurityConv. / exercise priceDateCodeSharesA/DExercisableExpiresUnderlyingUnderlying sharesOwned afterD/I
Restricted Stock UnitsF3,F4—Feb 24, 2019M5,677D——Class A Common Stock5,6770D

Explanation of responses

Remarks

The Reporting Person disclaims beneficial ownership of the securities reported herein as indirectly beneficially owned, except to the extent of his pecuniary interest therein.