OLIN Corp — Director's Dealing 2026

Feb 24, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLIN Corp (OLN)
CIK: 0000074303
Period of Report: 2026-02-20

Reporting Person: Slater Todd A (VP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-20	Common Stock	M	8690	—	Acquired	53393	Direct
2026-02-20	Common Stock	F	3850	$24.09	Disposed	49543	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-20	Restricted Stock Units	$	M	8690	Disposed		Common Stock (8690)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	115123	Indirect
Common Stock	96.7778	Indirect

Footnotes

F1: Restricted stock units convert into common stock on a one-to-one basis.

F2: The figure represents shares of Olin Common Stock held under the Olin Corporation Retirement Savings Plan, a tax conditioned plan reflecting transactions exempt under Rule 16b-3, as reported by the RSP Plan Administrator as of February 20, 2026.

F3: On February 20, 2025 the reporting person was granted 26,069 restricted stock units, 8,690 shares vested on February 20, 2026, 8,690 shares vest on February 20, 2027 and 8,689 shares vest on February 20, 2028.