Marc Ehrhardt - 01 May 2025 Form 4 Insider Report for OLIN Corp (OLN)

Role: VP Corporate Strategy
Signature: /s/ E.C. Tanner, Attorney-in-Fact
Issuer symbol: OLN
Transactions as of: 01 May 2025
Net transactions value: $0
Form type: 4
Filing time: 05 May 2025, 12:50:09 UTC
Next filing: 07 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ehrhardt Marc	VP Corporate Strategy	190 CARONDELET PLAZA, SUITE 1530, CLAYTON	/s/ E.C. Tanner, Attorney-in-Fact	05 May 2025	0002066714

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	OLN	Restricted Stock Units	Award	$0	+15,618		$0.000000	15,618	01 May 2025	Common Stock	15,618		Direct	F1, F2
transaction	OLN	Restricted Stock Units	Award	$0	+10,000		$0.000000	10,000	01 May 2025	Common Stock	10,000		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of Olin Common Stock.
F2	The restricted stock units vests in three annual installments beginning on May 1, 2026.
F3	2,500 units vest on May 1, 2026, 2,500 units vest on May 1, 2027 and the remaining 5,000 units vest on May 1, 2028.