OLIN Corp — Director's Dealing 2011

Feb 9, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLIN CORP (OLN)
CIK: 0000074303
Period of Report: 2011-02-07

Reporting Person: PAIN GEORGE H (Sr. VP, Gen. Counsel & Sec.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-07	Common Stock $1 par value	M	13334	$19.07	Acquired	36062.48	Direct
2011-02-07	Common Stock $1 par value	F	3308	$19.07	Disposed	32754.48	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2008-02-07	Restricted Stock Units	$0	M	13334	Disposed	2011-02-07	Common Stock (13334)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock $1 par value	477.1675	Indirect

Footnotes

F1: Fractional amount represents shares held under the Olin Corporation Dividend Reinvestment Plan.

F2: The figure shown represents shares of Olin Common Stock held under the Olin Common Stock Fund of the Olin Contributing Employee Ownership Plan (CEOP), a tax-conditioned plan reflectiing transactions exempt under Rule 16b-3, as reported by the CEOP Plan Administrator as of January 15, 2011.

F3: Security converts to common stock on a one-for-one basis.