ANDERSON CRAIG SCOTT (EVP & Chief Financial Officer) exercised options at SUMMIT MATERIALS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 3 exercises

ANDERSON CRAIG SCOTT

Filed: 12/26/2024ACC: 0001628280-24-052434

InsiderANDERSON CRAIG SCOTTCIK 1966515

→

IssuerSUMMIT MATERIALS, INC.CIK 1621563

Officer· EVP & Chief Financial Officer

Since Mar 2023

-11.84K

Net shares

Net seller

$597.7K

Total sold

Open market trades

0B · 0S

Total transactions

27.05K acquired · 38.88K disposed

Non-Derivative Transactions4

Class A Common Stock

Direct

M · Option Exercise

+2.45K

Price / share

—

Trade value

—

% of position

11.3%

12/20/2024

21.76K→24.21K

Class A Common Stock

Direct

M · Option Exercise

+7.47K

Price / share

—

Trade value

—

% of position

30.9%

12/20/2024

24.21K→31.69K

Class A Common Stock

Direct

M · Option Exercise

+17.12K

Price / share

—

Trade value

—

% of position

54.0%

12/20/2024

31.69K→48.81K

Class A Common Stock

Direct

F · Tax Withholding

−11.84K

Price / share

$50.50

Trade value

$597.72K

% of position

24.2%

12/20/2024

48.81K→36.98K

Total

Net shares

+15.21K

Net value

-$597.72K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	12/20/2024	M · Option Exercise	+2.45K	—	—	11.3%	21.76K	24.21K
Class A Common Stock Direct	12/20/2024	M · Option Exercise	+7.47K	—	—	30.9%	24.21K	31.69K
Class A Common Stock Direct	12/20/2024	M · Option Exercise	+17.12K	—	—	54.0%	31.69K	48.81K
Class A Common Stock Direct	12/20/2024	F · Tax Withholding	−11.84K	$50.50	$597.72K	24.2%	48.81K	36.98K
Total			+15.21K		-$597.72K

Derivative Transactions3

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

2.45K shares

−2.45K

Strike price

Held after

0.00

Exercisable

—

12/20/2024

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.47K shares

−7.47K

Strike price

Held after

0.00

Exercisable

—

12/20/2024

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

17.12K shares

−17.12K

Strike price

Held after

0.00

Exercisable

—

12/20/2024

Security	Converts To	Date	Type	Shares	Exercisable
Restricted Stock Units Direct	Class A Common Stock2.45K shares	12/20/2024	M · Option Exercise	−2.45K	—
Restricted Stock Units Direct	Class A Common Stock7.47K shares	12/20/2024	M · Option Exercise	−7.47K	—
Restricted Stock Units Direct	Class A Common Stock17.12K shares	12/20/2024	M · Option Exercise	−17.12K	—