ATKORE INC

Ticker: ATKR CUSIP: 047649108 Class: Common Stock

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q2 2024

Shares 395,388 Value ($000) $53,350 Avg Close $154.09 Range $126.00 - $188.47

Q1 2024

Shares 375,159 Value ($000) $71,415 Avg Close $154.45 Range $134.58 - $184.78

Q4 2023

Shares 386,534 Value ($000) $61,845 Avg Close $133.07 Range $116.71 - $159.82

Q3 2023

Shares 283,946 Value ($000) $42,362 Avg Close $145.61 Range $132.06 - $158.92

Q2 2023

Shares 244,797 Value ($000) $38,174 Avg Close $126.47 Range $112.03 - $151.87

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2024	395,388	$53,350	$154.09	$126.00 - $188.47
Q1 2024	375,159	$71,415	$154.45	$134.58 - $184.78
Q4 2023	386,534	$61,845	$133.07	$116.71 - $159.82
Q3 2023	283,946	$42,362	$145.61	$132.06 - $158.92
Q2 2023	244,797	$38,174	$126.47	$112.03 - $151.87