Zhang John Z 4

What Happened

• John Z. Zhang, Executive Vice President & Chief Commercial and Digital Officer of Corning Inc. (GLW), converted (exercised) 2,476 restricted stock units (RSUs) into 2,476 shares on Feb 9, 2026. To satisfy tax withholding, 945 of those shares were disposed (withheld/sold) at $131.39 per share, totaling $124,164.
• The filing shows the RSU conversion as derivative exercise (transaction code M) and the tax withholding as a payment of tax liability (transaction code F). The RSU conversion records a $0.00 per-share exercise price (typical for RSU settlement).

Key Details

• Transaction date: February 9, 2026; Form 4 filed February 11, 2026 (filed within the typical 2-business-day window).
• Shares converted: 2,476 RSUs → 2,476 shares (recorded at $0.00 exercise price).
• Shares withheld/sold for taxes: 945 shares at $131.39 each = $124,164.
• Footnotes: RSUs represent contingent rights to one share (F1). Vesting schedules cited include 100% vesting on Apr 15, 2026 (F2), Apr 15, 2027 (F3), Apr 14, 2028 (F4), and a staggered schedule for a Feb 8, 2023 grant that vests 1/3 after 1 year then 1/6 every 6 months until fully vested on the 3rd anniversary (F5).
• Shares owned after the transaction: not specified in this filing.

Context

• RSUs are typically settled into shares when they vest; the tax withholding here is a routine disposition to cover tax obligations, not an open-market sale intended as a liquidity/market bet.
• Transaction codes: M = exercise/conversion of derivative (RSU conversion), F = payment of exercise price or tax withholding.
• This appears to be a routine RSU settlement and tax-withholding event rather than a market-timed purchase or sale.