OLIN Corp — Director's Dealing 2025

Mar 10, 2025

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: OLIN Corp (OLN)
CIK: 0000074303
Period of Report: 2025-03-01

Reporting Person: Castle Angela M (VP & Chief Legal Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1504	Direct
Common Stock	2.331	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Options (Right to Buy)	$32.94	2029-02-16	Common Stock (3000)		Direct
Employee Stock Options (Right to Buy)	$26.26	2030-02-19	Common Stock (4533)		Direct
Employee Stock Options (Right to Buy)	$17.33	2031-02-18	Common Stock (5233)		Direct
Employee Stock Options (Right to Buy)	$28.99	2032-02-15	Common Stock (6200)		Direct
Employee Stock Options (Right to Buy)	$49.71	2033-02-22	Common Stock (3800)		Direct
Employee Stock Options (Right to Buy)	$60.55	2034-02-22	Common Stock (1846)		Direct
Employee Stock Options (Right to Buy)	$52.29	2035-02-22	Common Stock (2483)		Direct
Restricted Stock Units	$		Common Stock (10138)		Direct

Footnotes

F1: 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 March 1, 2025.

F2: This option vests in three installments with 1,231 currently exercisable and the remaining 615 vesting on February 22, 2026.

F3: This option vests in three installments with 828 currently exercisable as of February 22, 2025 and 828 vesting on February 22, 2026 and 827 vesting on February 22, 2027.

F4: Restricted stock units convert into common stock on a one-to-one basis.

F5: These restricted stock units vest in three annual installments beginning with 3,380 vesting on February 20, 2026 and 3,379 vesting on February 20, 2027 and 3,379 vesting on February 20, 2028.