VERMILLION TERESA M 4

What Happened

• Teresa M. Vermillion, VP & Treasurer of Olin Corporation (OLN), was granted a total of 8,083 shares on Feb 18, 2026: 79 shares of Olin common stock (RSP-held) and 8,004 restricted stock units (RSUs). Both were reported as acquired at $0.00 (award/grant).
• The RSUs are derivative awards that convert into common stock on a one-for-one basis and will vest in three annual installments beginning Feb 18, 2027. This is a compensation award (not an open-market purchase or sale).

Key Details

• Transaction date: 2026-02-18; Form 4 filed: 2026-02-20 (timely filing).
• Transaction codes: A = Award/Grant; one line is derivative (RSUs).
• Shares granted: 79 shares (RSP) + 8,004 RSUs = 8,083 total; Acquisition price reported: $0.00.
• Shares owned after transaction: not specified in the provided summary; F1 notes the 79 shares are reported under the Olin Retirement Savings Plan (RSP) as of Feb 20, 2026.
• Footnotes: F1 = RSP-administered shares reported by plan administrator; F2 = RSUs convert 1:1 to common stock; F3 = RSUs vest in three annual installments starting Feb 18, 2027.

Context

• RSU grants are standard compensation and do not represent an immediate market purchase or sale; value is realized only as RSUs vest and convert to shares (and then if/when the insider sells).
• Because the awards were granted at $0.00, there was no cash outlay by the insider; the economic value will depend on Olin’s stock price at vesting.