Brian D Frantz

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
10 Feb 25	SUM Summit Materials	Class A Common Stock	Sale back to company	Dispose D	No	No	52.5	11,402	598.61 k	0
10 Feb 25	SUM Summit Materials	Performance Stock Units Class A Common Stock	Sale back to company	Dispose D	No	No	0	2,839	0.00	0
10 Feb 25	SUM Summit Materials	Performance Stock Units Class A Common Stock	Sale back to company	Dispose D	No	No	0	9,649	0.00	0
10 Feb 25	SUM Summit Materials	RSU Class A Common Stock	Sale back to company	Dispose D	No	No	0	4,460	0.00	0
10 Feb 25	SUM Summit Materials	RSU Class A Common Stock	Sale back to company	Dispose D	No	No	0	2,839	0.00	0
10 Feb 25	SUM Summit Materials	RSU Class A Common Stock	Sale back to company	Dispose D	No	No	0	2,744	0.00	0
10 Feb 25	SUM Summit Materials	RSU Class A Common Stock	Sale back to company	Dispose D	No	No	0	1,285	0.00	0
10 Feb 25	SUM Summit Materials	Option Class A Common Stock	Sale back to company	Dispose D	No	No	23.89	3,634	86.82 k	0
16 Jan 25	SUM Summit Materials	Class A Common Stock	Payment of exercise	Dispose F	No	No	52.19	460	24.01 k	11,402
16 Jan 25	SUM Summit Materials	Class A Common Stock	Grant	Acquire A	No	No	0	1,348	0.00	11,862

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.