Form4insider filings, from the source

SEC Form 4 · accession 0000899243-16-021243

Summit Materials, Inc. · SUM

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

Reporting owner
Period of report
May 26, 2016
Accepted (ET)
May 31, 2016 · 6:01 pm EDT
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001621563

Table I — non-derivative securities

No Table I lines on this filing.

Table II — derivative securities

SecurityConv. / exercise priceDateCodeSharesA/DExercisableExpiresUnderlyingUnderlying sharesOwned afterD/I
Restricted Stock UnitsF1,F2—May 26, 2016A4,647A——Class A Common Stock4,6474,647D

Explanation of responses