OLIN executive exercises RSUs, with shares withheld

OLIN Corp executive Brett A. Flaugher reported equity award activity and related tax withholding.

Rhea-AI Filing Summary

OLIN Corp executive Brett A. Flaugher reported equity award activity and related tax withholding. On February 20, 2026, he exercised 6,276 restricted stock units at $0.0000 per unit, converting them into the same number of common shares through a derivative exercise.

On the same date, 1,839 common shares were disposed of at $24.09 per share to cover tax obligations associated with this award. After these transactions, he held 4,674 common shares directly, 12,552 restricted stock units directly, and 88,438 common shares indirectly through a trust. Footnotes state the restricted stock units convert into common stock on a one‑to‑one basis and are part of an 18,827‑unit grant with scheduled vesting through February 20, 2028.

Insider Trade Summary

6,276 shares exercised/converted

Exercise 4 txns

Insider FLAUGHER BRETT A

Role VP & Pres, Winchester

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	6,276	$0.00	$0.00
Exercise	Common Stock	6,276	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	1,839	$24.09	$44K
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 12,552 contracts (Direct); Common Stock — 4,674 shares (Direct); Common Stock — 88,438 shares (Indirect, By Trust)

Footnotes (2)

1. F1. Restricted stock units convert into common stock on a one-to-one basis.
2. F2. On February 20, 2025 the reporting person was granted 18,827 restricted stock units, 6,276 vested on February 20, 2026, 6,276 will vest on February 20, 2027 and 6,275 will vest on February 20, 2028.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider equity transactions did OLIN (OLN) report for Brett A. Flaugher?

OLIN reported that Brett A. Flaugher exercised 6,276 restricted stock units, converting them into common stock, and had 1,839 common shares disposed of to satisfy tax obligations. These transactions relate to previously granted equity awards rather than open-market buying or selling.

How many OLIN (OLN) shares does Brett A. Flaugher hold after this Form 4?

After the reported transactions, Brett A. Flaugher holds 4,674 common shares directly, 12,552 restricted stock units directly, and 88,438 common shares indirectly through a trust. These positions reflect both vested and unvested components of his long-term incentive awards.

What is the nature of the tax-related share disposition in OLIN (OLN)’s Form 4?

The Form 4 shows a tax-withholding disposition of 1,839 common shares at $24.09 per share. This transaction, coded “F,” indicates shares were delivered to cover tax liabilities from the restricted stock unit vesting rather than being sold in an open-market transaction.

How do OLIN (OLN) restricted stock units convert into common stock for Brett A. Flaugher?

Footnotes state that Flaugher’s restricted stock units convert one-to-one into OLIN common stock. They are part of an 18,827-unit grant made on February 20, 2025, vesting in three annual installments through February 20, 2028, including the 6,276 units that vested in 2026.

What grant and vesting schedule applies to Brett A. Flaugher’s OLIN (OLN) restricted stock units?

According to the footnotes, Flaugher received an 18,827 restricted stock unit grant on February 20, 2025. 6,276 units vested on February 20, 2026, another 6,276 will vest on February 20, 2027, and 6,275 will vest on February 20, 2028.

How are some of Brett A. Flaugher’s OLIN (OLN) shares held according to the Form 4?

The Form 4 notes that 88,438 common shares are held indirectly “By Trust.” This indicates a trust structure holds those shares, while his vested common stock and restricted stock units are reported as directly owned positions in his name.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 02/24/2026 - 05:06 PM EST Learn about SEC filing dates

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^*

FLAUGHER BRETT A

(Last) (First) (Middle)

C/O OLIN CORPORATION

190 CARONDELET PLZ, STE 1530

(Street)

CLAYTON MO 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 & Pres, Winchester

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/20/2026		M		6,276	A	(1)	6,513	D
Common Stock	02/20/2026		F		1,839	D	$24.09	4,674	D
Common Stock								88,438	I	By Trust

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	02/20/2026		M			6,276	(2)	(2)	Common Stock	6,276	$0	12,552	D

Explanation of Responses:

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

2. On February 20, 2025 the reporting person was granted 18,827 restricted stock units, 6,276 vested on February 20, 2026, 6,276 will vest on February 20, 2027 and 6,275 will vest on February 20, 2028.

Remarks:

	/s/ Emily C. Tanner	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.