Form4insider filings, from the source

SEC Form 4 · accession 0001104659-18-011133

Summit Materials, Inc. · SUM

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

Reporting owner
Period of report
Feb 16, 2018
Accepted (ET)
Feb 21, 2018 · 6:00 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 StockF1,F2Feb 16, 2018S5,000$32.62D9,868D
Class A Common StockFeb 20, 2018S2,657$32.07D7,211D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses