KAISER ALUMINUM CORP

Ticker: KALU CUSIP: 483007704 Class: COM PAR $0.01

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

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

Q3 2023

Shares 433,169 Value ($000) $32,600 Avg Close $68.63 Range $60.46 - $80.14

Q2 2023

Shares 467,327 Value ($000) $33,479 Avg Close $59.13 Range $50.97 - $66.79

Q1 2023

Shares 458,589 Value ($000) $34,224 Avg Close $71.37 Range $54.20 - $83.84

Q4 2022

Shares 455,851 Value ($000) $34,626 Avg Close $70.19 Range $54.19 - $85.75

Q3 2022

Shares 474,145 Value ($000) $29,089 Avg Close $63.78 Range $51.54 - $73.18

Q2 2022

Shares 382,895 Value ($000) $30,283 Avg Close $80.35 Range $59.75 - $92.46

Q1 2022

Shares 392,938 Value ($000) $36,999 Avg Close $82.30 Range $72.65 - $90.86

Q4 2021

Shares 398,015 Value ($000) $37,390 Avg Close $85.61 Range $74.52 - $100.42

Q3 2021

Shares 258,556 Value ($000) $28,172 Avg Close $100.12 Range $87.22 - $109.89

Q2 2021

Shares 245 Value ($000) $30 Avg Close $104.28 Range $88.44 - $118.01

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	433,169	$32,600	$68.63	$60.46 - $80.14
Q2 2023	467,327	$33,479	$59.13	$50.97 - $66.79
Q1 2023	458,589	$34,224	$71.37	$54.20 - $83.84
Q4 2022	455,851	$34,626	$70.19	$54.19 - $85.75
Q3 2022	474,145	$29,089	$63.78	$51.54 - $73.18
Q2 2022	382,895	$30,283	$80.35	$59.75 - $92.46
Q1 2022	392,938	$36,999	$82.30	$72.65 - $90.86
Q4 2021	398,015	$37,390	$85.61	$74.52 - $100.42
Q3 2021	258,556	$28,172	$100.12	$87.22 - $109.89
Q2 2021	245	$30	$104.28	$88.44 - $118.01