Coherent Corp. CTO Julie Sheridan Eng Executes $3.58M in Rule 10b5-1 Sales Following Equity Vesting

Executive Summary

On September 1, 2026, Julie Sheridan Eng, Chief Technology Officer of Coherent Corp. ($COHR), reported multiple equity transactions including grants, tax withholdings, and planned open-market sales pursuant to a pre-established Rule 10b5-1 trading plan.

Transaction Breakdown

1. Equity Grants (August 28, 2026):

   • RSU Award: Received 5,373 shares of Common Stock vesting across future quarters.
   • PSU Payout: Issued 11,960 shares upon the vesting and payout of performance stock units granted in August 2023.

2. Tax Withholdings (August 28, 2026):

   • 12,862 shares were withheld by the issuer to satisfy tax withholding obligations at $295.39 per share (value: ~$3.80M).

3. Rule 10b5-1 Planned Sales:

   • August 31, 2026: Sold 7,047 shares at a weighted average price of $276.8319 (value: ~$1.95M).
   • September 1, 2026: Sold 6,030 shares at a weighted average price of $270.6876 (value: ~$1.63M).
   • Combined Open Market Sales: 13,077 shares sold for a total value of $3,583,080.63.

Ownership Post-Transaction

Following all reported transactions, Eng directly holds 41,027 shares of Coherent Corp. Common Stock (inclusive of 197 shares previously acquired under the employee stock purchase plan).

Market & Governance Context

• The open-market sales were conducted pursuant to a Rule 10b5-1 trading plan adopted on November 21, 2025, mitigating concerns regarding opportunistic timing around material non-public information.
• The net change in direct ownership reflects routine liquidity and diversification following multi-year vesting events.