Three Months Ended September 30,

Nine Months Ended September 30,

2023

2022

2023

2022

Computation of Net Income per Share

(In millions, except per share data)

Net income

$

104.5

$

315.2

$

403.2

$

1,130.3

Net income (loss) attributable to noncontrolling interests

0.4

—

(4.1)

—

Net income attributable to Olin Corporation

$

104.1

$

315.2

$

407.3

$

1,130.3

Basic shares

124.2

141.2

127.5

148.3

Basic net income attributable to Olin Corporation per share

$

0.84

$

2.23

$

3.19

$

7.62

Diluted shares:

Basic shares

124.2

141.2

127.5

148.3

Stock-based compensation

2.8

3.1

3.6

Diluted shares

127.0

144.3

130.6

151.9

Diluted net income attributable to Olin Corporation per share

$

0.82

$

2.18

$

3.12

$

7.44