OLIN Corp — Director's Dealing 2005

May 5, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLIN CORP (OLN)
CIK: 0000074303
Period of Report: 2005-04-26

Reporting Person: Curley Stephen C (Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-04-26	Common Stock $1 par value	M	1144	$17.16	Acquired	1144	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-04-26	Employee Stock Option (right to buy)	$17.16	M	1144	Disposed	2005-04-26	Common Stock (1144)	Direct