| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Sumner R Nichole | VP & Controller | C/O OLIN CORPORATION, 190 CARONDELET PLZ, STE 1530, CLAYTON | /s/ E.C. Tanner, Attorney-in-Fact | 05 Feb 2026 | 0001607503 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OLN | Common Stock | Options Exercise | $62,415 | +4,750 | +19% | $13.14 | 29,521 | 03 Feb 2026 | Direct | |
| transaction | OLN | Common Stock | Sale | $106,846 | -4,750 | -16% | $22.49 | 24,771 | 03 Feb 2026 | Direct | F1 |
| holding | OLN | Common Stock | 9,453 | 03 Feb 2026 | By RSP Trustee | F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OLN | Employee Stock Options (Right to Buy) | Options Exercise | $0 | -4,750 | -100% | $0.000000 | 0 | 03 Feb 2026 | Common Stock | 4,750 | $13.14 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.48 to $22.52, inclusive. The reporting person undertakes to provide to Olin Corporation, any security holder of Olin Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote 1 to this Form 4. |
| F2 | The figure represents shares of Olin Common Stock held under the Olin Corporation Retirement Savings Plan (RSP), a tax conditioned plan reflecting transactions exempt under Rule 16b-3, as reported by the RSP Plan Administrator as of February 3, 2026. |
| F3 | The option vested in three equal annual installments on February 12, 2017, 2018 and 2019. |