Angela M. Castle - 18 Feb 2026 Form 4 Insider Report for OLIN Corp (OLN)

Role
VP & Chief Legal Officer
Signature
/s/ E.C Tanner, Attorney-in-Fact
Issuer symbol
OLN
Transactions as of
18 Feb 2026
Net transactions value
$0
Form type
4
Filing time
20 Feb 2026, 16:01:31 UTC
Previous filing
10 Mar 2025
Next filing
24 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Castle Angela M VP & Chief Legal Officer 16290 KATY FREEWAY, 600, HOUSTON /s/ E.C Tanner, Attorney-in-Fact 20 Feb 2026 0002058796

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OLN Common Stock Award $0 +26 +1.7% $0.000000 1,530 18 Feb 2026 Direct
holding OLN Common Stock 2 18 Feb 2026 By RSP Trustee F1

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 +16,007 $0.000000 16,007 18 Feb 2026 Common Stock 16,007 Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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 February 20, 2026.
F2 Each restricted stock unit represents a contingent right to receive one share of Olin Common Stock.
F3 These restricted stock units vest in three annual installments beginning on February 18, 2027.