Brett A. Flaugher - 20 Feb 2026 Form 4 Insider Report for OLIN Corp (OLN)

Reporting relationship: VP & Pres, Winchester
Issuer ticker: OLN
Reported as of: 20 Feb 2026
Net transaction value: -$44,302
SEC form: 4
Accepted by SEC: 24 Feb 2026, 17:06:47 UTC
Prior SEC filing: 20 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Emily C. Tanner

Key filing fact

Brett A. Flaugher filed Form 4 for OLIN Corp (OLN) on 24 Feb 2026.

Key facts

This page summarizes Brett A. Flaugher's Form 4 filing for OLIN Corp (OLN).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 24 Feb 2026, 17:06.

Change

Previous filing in this sequence was filed on 20 Feb 2026.
Current net transaction value: -$44,302.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001727635 Primary reporting owner

FLAUGHER BRETT A

Relationship: VP & Pres, Winchester
Address: C/O OLIN CORPORATION, 190 CARONDELET PLZ, STE 1530, CLAYTON
Signature: /s/ Emily C. Tanner
Signature date: 24 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OLN transaction

Common Stock

Options Exercise

Transaction value
Shares: +6,276
Change %: +2648%
Price
Shares after: 6,513
Date: 20 Feb 2026
Ownership: Direct
Footnotes: F1

OLN transaction

Common Stock

Tax liability

Transaction value: $44,302
Shares: -1,839
Change %: -28%
Price: $24.09
Shares after: 4,674
Date: 20 Feb 2026
Ownership: Direct

OLN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 88,438
Date: 20 Feb 2026
Ownership: By Trust

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OLN transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -6,276
Change %: -33%
Price: $0.000000
Shares after: 12,552
Date: 20 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,276
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

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

Footnote 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.