Marc Ehrhardt - 01 May 2026 Form 4 Insider Report for OLIN Corp (OLN)

Reporting relationship: VP & Pres Corp Development
Issuer ticker: OLN
Reported as of: 01 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 05 May 2026, 11:02:12 UTC
Prior SEC filing: 20 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ E.C. Tanner, Attorney-in-Fact

Key filing fact

Marc Ehrhardt filed Form 4 for OLIN Corp (OLN) on 05 May 2026.

Key facts

This page summarizes Marc Ehrhardt's Form 4 filing for OLIN Corp (OLN).
5 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 05 May 2026, 11:02.

Change

Previous filing in this sequence was filed on 20 Feb 2026.
Current net transaction value: $0.

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 0002066714 Primary reporting owner

Ehrhardt Marc

Relationship: VP & Pres Corp Development
Address: 190 CARONDELET PLAZA, SUITE 1530, CLAYTON
Signature: /s/ E.C. Tanner, Attorney-in-Fact
Signature date: 05 May 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: +5,206
Change %: +26%
Price
Shares after: 25,206
Date: 01 May 2026
Ownership: Direct
Footnotes: F1

OLN transaction

Common Stock

Options Exercise

Transaction value
Shares: +2,500
Change %: +9.9%
Price
Shares after: 27,706
Date: 01 May 2026
Ownership: Direct
Footnotes: F1

OLN transaction

Common Stock

Tax liability

Transaction value
Shares: -1,877
Change %: -6.8%
Price: $28.48^*
Shares after: 25,829
Date: 01 May 2026
Ownership: Direct

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
Shares: -5,206
Change %: -33%
Price: $0.000000^*
Shares after: 10,412
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,206
Exercise price
Footnotes: F1, F2

OLN transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -2,500
Change %: -25%
Price: $0.000000^*
Shares after: 7,500
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,500
Exercise price
Footnotes: F1, F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

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

Footnote F2

On May 1, 2025 the reporting person was granted 15,618 restricted stock units, 5,206 which vested on May 1, 2026, 5,206 vest on May 1, 2027 and 5,206 vest on May 1, 2028.

Footnote F3

On May 1, 2025 the reporting person was granted 10,000 restricted stock units, 2,500 which vested on May 1, 2026, 2,500 vest on May 1, 2027 and 5,000 vest on May 1, 2028.