MARTIN MARIETTA MATLS INC

Ticker: MLM CUSIP: 573284106 Class: COM

Investment Management Corp of Ontario's Holding History (CIK: 0001811568)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 5,207 Value ($000) $3,242 Avg Close $621.36 Range $584.22 - $664.29

Q3 2025

Shares 3,873 Value ($000) $2,441 Avg Close $594.66 Range $531.45 - $631.42

Q2 2025

Shares 2,569 Value ($000) $1,410 Avg Close $526.61 Range $440.13 - $567.46

Q1 2025

Shares 2,769 Value ($000) $1,324 Avg Close $505.20 Range $446.65 - $556.90

Q3 2024

Shares 2,872 Value ($000) $1,546 Avg Close $536.17 Range $486.59 - $598.18

Q2 2024

Shares 2,172 Value ($000) $1,177 Avg Close $575.68 Range $522.75 - $620.53

Q1 2024

Shares 1,872 Value ($000) $1,149 Avg Close $539.98 Range $474.36 - $611.03

Q4 2023

Shares 1,485 Value ($000) $741 Avg Close $445.31 Range $384.97 - $495.36

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5,207	$3,242	$621.36	$584.22 - $664.29
Q3 2025	3,873	$2,441	$594.66	$531.45 - $631.42
Q2 2025	2,569	$1,410	$526.61	$440.13 - $567.46
Q1 2025	2,769	$1,324	$505.20	$446.65 - $556.90
Q3 2024	2,872	$1,546	$536.17	$486.59 - $598.18
Q2 2024	2,172	$1,177	$575.68	$522.75 - $620.53
Q1 2024	1,872	$1,149	$539.98	$474.36 - $611.03
Q4 2023	1,485	$741	$445.31	$384.97 - $495.36