Castle Angela M 4
4 · OLIN Corp · Filed Feb 24, 2026
Insider Transaction Report
Form 4
OLIN CorpOLN
Castle Angela M
VP & Chief Legal Officer
Transactions
- Exercise/Conversion
Common Stock
[F1]2026-02-20+3,380→ 4,910 total - Tax Payment
Common Stock
2026-02-20$24.09/sh−1,003$24,162→ 3,907 total - Sale
Common Stock
[F2]2026-02-24$24.25/sh−2,379.263$57,700→ 1,527.738 total - Exercise/Conversion
Restricted Stock Units
[F1][F4]2026-02-20−3,380→ 6,758 total→ Common Stock (3,380 underlying)
Holdings
- 2.412(indirect: By Trust)
Common Stock
[F3]
Footnotes (4)
- [F1]Each restricted stock unit represents a contingent right to receive one share of Olin Common Stock.
- [F2]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.22 to $24.3415, 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 2 to this Form 4.
- [F3]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.
- [F4]On February 20, 2025 the reporting person was granted 10,138 restricted stock units, 3,380 shares vested on February 20, 2026, 3,379 shares vest on February 20, 2027 and 3,379 shares vest on February 20, 2028.
Signature
/s/ E.C Tanner, Attorney-in-Fact|2026-02-24