Form4insider filings, from the source

SEC Form 4 · accession 0001104659-19-012124

Summit Materials, Inc. · SUM

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

Reporting owner
Period of report
Feb 28, 2019
Accepted (ET)
Mar 1, 2019 · 6:01 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 28, 2019M3,994—A12,804D

Table II — derivative securities

SecurityConv. / exercise priceDateCodeSharesA/DExercisableExpiresUnderlyingUnderlying sharesOwned afterD/I
Restricted Stock UnitsF2,F3—Feb 28, 2019M3,994D——Class A Common Stock3,9940D
Restricted Stock UnitsF2,F4—Feb 28, 2019A8,143A——Class A Common Stock8,1438,143D

Explanation of responses