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Olin Corporation VP & Chief Legal Officer Angela M. Castle reported several equity moves. On February 24, 2026, she sold 2,379.2625 shares of common stock in open-market transactions at a weighted average price of $24.2512, within a $24.22–$24.3415 range. On February 20, 2026, 3,380 restricted stock units were converted into the same number of common shares at $0, with 1,003 shares withheld at $24.09 to cover taxes. Following these transactions, she directly held 1,527.7375 common shares, 6,758 restricted stock units, and indirectly held 2.4123 shares through the Olin Corporation Retirement Savings Plan.
Olin Corporation VP & Treasurer Teresa M. Vermillion reported equity award activity on February 20, 2026. She exercised 2,318 restricted stock units, converting them into an equal number of common shares at $0.00 per share. To cover tax obligations, 674 common shares were disposed of at $24.09 per share through a tax-withholding transaction. Following these transactions, she directly held 18,922 common shares and 4,634 restricted stock units, plus an additional 140.7607 common shares held indirectly under the Olin Corporation Retirement Savings Plan.
Olin Corp VP & Controller Nichole Sumner reported equity award activity involving restricted stock units and common shares. On February 20, 2026, 1,835 restricted stock units were exercised and converted into 1,835 shares of common stock, with no cash exercise price. To cover taxes on this vesting, 538 common shares were disposed of at $24.09 per share through a tax-withholding transaction. After these transactions, the reporting person directly held 26,147 common shares and 3,669 restricted stock units, plus 9,452.6705 common shares held indirectly through the Olin Corporation Retirement Savings Plan.
Olin Corp VP & CFO Todd A. Slater exercised 8,690 restricted stock units on a one-to-one basis into common stock on February 20, 2026 at a stated price of $0.00 per share. To cover tax obligations, 3,850 common shares were disposed of at $24.09 per share.
After these transactions, Slater directly owned 49,543 common shares and 17,379 restricted stock units. He also indirectly held 115,123 common shares through a joint revocable living trust and 96.7778 shares through the Olin Corporation Retirement Savings Plan.
OLIN Corp President & CEO Kenneth Todd Lane reported equity award activity involving restricted stock units and common shares. On February 20, 2026, he exercised 36,206 restricted stock units, which converted into 36,206 shares of common stock at no exercise price.
These units are part of a 108,617‑unit grant awarded on February 20, 2025, vesting in three annual installments through 2028. In a related move, 8,811 common shares were disposed of at $24.09 per share to cover tax obligations associated with the vesting, a tax-withholding disposition rather than an open-market sale. Following these transactions, Lane directly owned 69,962 common shares.
Olin Corp vice president Florian J. Kohl reported equity award activity. On February 20, 2026, he exercised 6,035 restricted stock units, converting them into an equal number of common shares at a stated price of $0.00 per share. In a related transaction that same day, 1,470 common shares were disposed of at $24.09 per share to satisfy tax obligations associated with the award. After these transactions, Kohl directly held 12,068 restricted stock units and 5,510 shares of Olin common stock.
Olin Corp executive Deon Carter, VP & President CAPV, reported the vesting and conversion of 6,759 restricted stock units into common stock on February 20, 2026. From these shares, 1,793 were withheld to cover tax obligations at $24.09 per share. After these transactions, Carter directly holds 6,857 shares of Olin common stock and retains 13,517 restricted stock units from a prior 20,276-unit grant scheduled to vest through 2028.
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.
OLIN Corp director and President & CEO Kenneth Todd Lane reported an equity compensation grant on Form 4. On February 18, 2026, he acquired 132,053 restricted stock units, each representing a contingent right to receive one share of Olin common stock. These restricted stock units vest in three annual installments beginning on February 18, 2027, aligning his compensation with future company performance.