X0609 4 2026-08-28 false 0000820318 COHERENT CORP. COHR 0001691463 Mocciaro Ilaria false C/O COHERENT CORP. 375 SAXONBURG BOULEVARD SAXONBURG PA 16056 false true false false Chief Accounting Officer false Common Stock 2026-08-28 4 A false 1612 0 A 23879 D Common Stock 2026-08-28 4 A false 2449 0 A 26328 D Common Stock 2026-08-28 4 F false 2174 295.39 D 24154 D Deferred Performance Stock Units 2026-08-28 4 A false 2335 A Common Stock 2335 2335 D These shares represent a restricted stock unit award granted to the reporting person. One-third (1/3) of the restricted stock units will vest on August 28, 2027, and the remaining two-thirds (2/3) of the restricted stock units will vest in eight equal quarterly installments beginning on November 28, 2027. Represents shares issued upon payout of the Performance Stock Units granted in August 2023. Of the total 4,784 Performance Stock Units that were subject to vesting on the transaction date, the reporting person elected to defer settlement of 2,335 of the underlying shares of common stock pursuant to the Coherent Corp. Deferred Compensation Plan; the deferred Performance Stock Units are reported in Table II. The remaining 2,449 underlying shares of common stock were settled, of which 758 shares were withheld for taxes and 1,691 shares were delivered to the reporting person. These shares were withheld by the company to discharge withholding tax obligations of the reporting person and do not constitute an actual sale or other open market transaction. Represents deferred stock units acquired upon the reporting person's election to defer settlement of 2,392 shares of the vested Performance Stock Units under the Coherent Corp. Deferred Compensation Plan (the "Plan"). Of the 2,392 deferred stock units, 57 units were withheld to satisfy FICA tax obligations, resulting in 2,335 deferred stock units credited to the reporting person's Plan account. The deferred stock units are deemed invested in our common stock and are payable solely in shares of common stock upon a qualifying distribution event under the Plan. /s/ Christopher M. Forrester, Attorney-in-Fact 2026-09-01