Sec Form 4/A Filing - Sutton Scott McDougald @ OLIN Corp - 2024-01-30

FORM 4/A Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Sutton Scott McDougald 2. Issuer Name and Ticker or Trading Symbol OLIN Corp [ OLN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President & CEO (Last) (First) (Middle) C/O OLIN CORPORATION, 190 CARONDELET PLZ, STE 1530 3. Date of Earliest Transaction (MM/DD/YY) 01/30/2024 (Street) CLAYTON, MO63105 4. If Amendment, Date Original Filed (MM/DD/YY) 02/01/2024 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Options (Right to Buy) $ 28.99 01/30/2024 M 205,534 02/15/2022( 1 ) 02/15/2031 Common Stock 205,534 $ 0 102,766 ( 2 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Sutton Scott McDougald C/O OLIN CORPORATION 190 CARONDELET PLZ, STE 1530 CLAYTON, MO63105 X President & CEO Signatures /s/ E.C. Tanner, Attorney-in-Fact 03/12/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The options vest in three annual installments on February 15, 2022, February 15, 2023 and February 15, 2024. ( 2 )On February 1, 2024, the reporting person filed a Form 4 which inadvertently reported that, following his exercise of an option and sale of the underlying stock, he no longer owned any stock options exercisable at $28.99. In fact, as reported in this amendment, the reporting person still owned 102,766 options following his exercise. The reporting person subsequently exercised his remaining 102,766 stock options as reported in a Form 4 amendment filed on February 23, 2024 and a Form 4 filed on February 28, 2024 but incorrectly reported remaining balances of such stock options following this original error. Therefore, this amendment also effectively corrects the subsequent incorrect reporting in his subsequent Form 4s of the stock options owned following his subsequent stock option exercises.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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