What is the OLIN CFO’s direct share ownership after these transactions?

Following the February 20, 2026 transactions, the CFO directly owned 49,543 shares of Olin common stock and 17,379 restricted stock units. These figures reflect the RSU conversion and tax-related share disposition reported, and represent his ongoing direct equity stake in the company.

What indirect OLIN share holdings does the CFO report?

Indirectly, the CFO reported 115,123 Olin common shares held through a joint revocable living trust and 96.7778 shares held by the Olin Corporation Retirement Savings Plan. The plan balance reflects a tax-conditioned retirement account as of February 20, 2026, reported by the plan administrator.

Olin CFO exercises RSUs, adjusts share holdings

Olin Corp VP & CFO Todd A. Slater exercised 8,690 restricted stock units on a one-to-one basis into common stock on February 20, 2026 at a stated price of $0.00 per share.

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Rhea-AI Filing Summary

Olin Corp VP & CFO Todd A. Slater exercised 8,690 restricted stock units on a one-to-one basis into common stock on February 20, 2026 at a stated price of $0.00 per share. To cover tax obligations, 3,850 common shares were disposed of at $24.09 per share.

After these transactions, Slater directly owned 49,543 common shares and 17,379 restricted stock units. He also indirectly held 115,123 common shares through a joint revocable living trust and 96.7778 shares through the Olin Corporation Retirement Savings Plan.

Insider Trade Summary

8,690 shares exercised/converted

Exercise 5 txns

Insider Slater Todd A

Role VP & CFO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	8,690	$0.00	$0.00
Exercise	Common Stock	8,690	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	3,850	$24.09	$93K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 17,379 contracts (Direct); Common Stock — 49,543 shares (Direct); Common Stock — 115,123 shares (Indirect, Joint Revocable Living Trust); Common Stock — 96.7778 shares (Indirect, By RSP Trustee)

Footnotes (3)

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.

FAQ

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What insider transactions did OLIN Corp VP & CFO report on this Form 4?

Olin Corp VP & CFO Todd A. Slater exercised 8,690 restricted stock units into common stock, then disposed of 3,850 common shares at $24.09 per share to satisfy tax obligations. These movements changed his direct and indirect ownership balances.

How many OLIN (OLN) RSUs did the CFO convert to common stock?

The CFO converted 8,690 restricted stock units into an equal number of Olin common shares. Footnotes state these RSUs were part of a 26,069-unit grant, with 8,690 units vesting on February 20, 2026 and additional tranches scheduled to vest in 2027 and 2028.

How many OLIN common shares were withheld for taxes in this Form 4?

A total of 3,850 Olin common shares were disposed of at $24.09 per share to pay tax liabilities related to the RSU conversion. The transaction is coded “F,” indicating payment of exercise price or tax liability by delivering securities rather than a market sale.

How are the OLIN restricted stock units structured for the CFO grant?

The CFO received a grant of 26,069 restricted stock units on February 20, 2025. According to the footnotes, 8,690 units vested on February 20, 2026, another 8,690 vest on February 20, 2027, and 8,689 on February 20, 2028, each converting one-for-one into common stock.

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Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 02/24/2026 - 05:17 PM EST

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Slater Todd A

(Last)

(First)

(Middle)

C/O OLIN CORPORATION

190 CARONDELET PLZ, STE 1530

(Street)

CLAYTON

63105

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
OLIN Corp [ OLN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	VP & CFO

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/20/2026		M		8,690	A	⁽¹⁾	53,393	D
Common Stock	02/20/2026		F		3,850	D	$24.09	49,543	D
Common Stock								115,123	I	Joint Revocable Living Trust
Common Stock								96.7778⁽²⁾	I	By RSP Trustee

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	02/20/2026		M			8,690	⁽³⁾	⁽³⁾	Common Stock	8,690	$0	17,379	D

Explanation of Responses:

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

2. 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.

3. 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.

Remarks:

	/s/ E.C. Tanner, Attorney-in-Fact	02/24/2026
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR