Beck Thomas A. 4

4 · Summit Materials, Inc. · Filed Sep 8, 2017

Form 4

Period: 2017-09-06

See Remarks

Transactions

Sale
Class A Common Stock
2017-09-06$30.24/sh−17,899$541,266→ 1,560 total
Exercise/Conversion
Options (right to buy)
2017-09-06−7,719→ 7,721 total
Exercise: $18.00Exp: 2025-03-11→ Class A Common Stock (7,719 underlying)
Exercise/Conversion
Class A Common Stock
2017-09-06$18.00/sh+5,938$106,884→ 7,498 total
Exercise/Conversion
Class A Common Stock
2017-09-06$18.00/sh+7,719$138,942→ 15,217 total
Exercise/Conversion
Class A Common Stock
2017-09-06$17.07/sh+4,242$72,411→ 19,459 total
Sale
Class A Common Stock
2017-09-07$30.10/sh−1,560$46,956→ 0 total
Exercise/Conversion
Options (right to buy)
2017-09-06−5,938→ 5,939 total
Exercise: $18.00Exp: 2025-03-11→ Class A Common Stock (5,938 underlying)
Exercise/Conversion
Options (right to buy)
2017-09-06−4,242→ 8,482 total
Exercise: $17.07Exp: 2026-02-24→ Class A Common Stock (4,242 underlying)

Holdings

Footnotes (5)

[F1]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.14 to $30.34, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
[F2]Reflects securities held by a family limited liability company controlled by Mr. Beck.
[F3]Reflects the grant of 11,877 options that vest in four equal annual installments beginning on March 11, 2016.
[F4]Reflects the grant of 15,440 options that vest in four equal annual installments beginning on March 11, 2016.
[F5]Reflects the grant of 12,724 options that vest in three equal annual installments beginning on February 24, 2017.

Documents

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