SEC Form 4 · accession 0001209191-15-027964

Summit Materials, Inc. · SUM

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

Reporting owner

Damian John Murphy

Officer — EVP & Central Region President

Period of report

Mar 11, 2015

Accepted (ET)

Mar 19, 2015 · 5:31 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001621563

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock	Mar 17, 2015	P	1,200	$18.00	A	1,200	D
Class A Common Stock	Mar 17, 2015	P	1,800	$18.00	A	1,800	I	By child

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
LP Units of Summit Materials Holdings L.P.^F2,F1	—	Mar 11, 2015	A	294,848	A	—	—	Class A Common Stock	294,848	294,848	D
Options (right to buy)^F2,F3	$18.00	Mar 11, 2015	A	124,084	A	—	Mar 11, 2025	Class A Common Stock	124,084	124,084	D
Options (right to buy)^F2,F4	$18.00	Mar 11, 2015	A	161,310	A	—	Mar 11, 2025	Class A Common Stock	161,310	161,310	D

Explanation of responses

F1Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the issuer's Registration Statement on Form S-1 (File No. 333-201058) (the "Registration Statement")) for shares of the issuer's Class A common stock on a one-for-one basis.
F2These securities were acquired in connection with the reclassification of the interests of Summit Material Holdings L.P. prior to the issuer's initial public offering (as more fully described in the Registration Statement).
F3The options vest in four equal annual installments beginning on March 11, 2016.
F4The options vest upon the achievement of certain vesting events more fully described in the Registration Statement.

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.