CHIZEVER GERALD M 4

What Happened
Gerald M. Chizever, a director of OSI Systems, tendered 231 shares of OSIS stock on July 6, 2026 at $221.76 per share (total value $51,227) to satisfy tax withholding obligations related to equity compensation. This was a net-settlement/tax-withholding transaction (transaction code F) — shares were surrendered to cover taxes, not sold on the open market.

Key Details

• Transaction date: 2026-07-06; filing date: 2026-07-07 (timely filing).
• Price per share: $221.76; shares tendered: 231; total value: $51,227.
• Footnote F1: Net settlement — shares were tendered to pay tax withholding; no shares were sold.
• Footnote F2: Some or all shares are held by The G&C Chizever Family Trust (Gerald and Caroline Chizever, Trustees).
• Shares owned after the transaction: not specified in this filing.

Context
Net-settlement tax withholdings are a common administrative step after an option exercise or equity vesting: the company withholds (or the insider tenders) shares to cover taxes rather than selling shares on the market. This action is routine and does not, by itself, indicate a change in the insider’s view of the company’s prospects.