FY24 Q2 Financial Outlook

WELL CAPITALIZED FOR FUTURE GROWTH (1) External Financing Sources Debt ■ $3.4B secured term loans ■ $990M high yield bonds. ■ $346M revolver availability Convertible Preferred Equity $2.15B series B investment from Bain Capital Coupon: 5%, 4-year payable-in-kind, cash pay option thereafter ■ Conversion price of $85.00 per share Leverage Total Debt $4.38 billion 2.9x(1) Cash $0.94 billion Net Debt $3.44 billion 2.3x(1) PF Combined TTM Adj $1,494 million EBITDA (1) (incl. $143M synergies +$263M additional cost savings) Fully-Diluted Shares Outstanding (2) COHR basic shares 152M Series B preferred 27M Pro forma FDSO 179M (1) Reflects, as of 9/30/2023, using pro forma TTM combined adj EBITDA at 9/30/23, including $406 million of future expected cost savings within 36 months. Not calculated in accordance with Article 11 of SEC regulation S-X. (2) Balances assuming all securities are dilutive as of 9/30/23. Not calculated in accordance with Article 11 of SEC regulation S-X. COHERENT Copyright 2023, Coherent. All rights reserved. 46

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