IIVIP Coherent Corporation

September 29, 2023

Dear Coherent Shareholders:

Our fiscal year 2023 as the new Coherent was a year of many new records set, including generating about one billion dollars from only two customers, demonstrating that as our company grows, we become a more strategic supplier to our customers. We logged countless awards, announcements, and accomplishments as we worked to begin the process of integrating legacy Coherent. I am proud of everything that the team at Coherent achieved.

The largest opportunities that we are addressing in fiscal year 2024 include high-speed datacom transceivers for Artificial Intelligence and Machine Learning (AI/ML) buildouts, silicon carbide materials for the EV market, and lasers and optics for the semiconductor capital equipment market. Our ability to manufacture transceivers at scale along with our product and technology roadmaps have caught the attention of the largest companies driving the widespread deployment and growth of AI.

We invested nearly one billion dollars in innovation and manufacturing infrastructure to position us for what I expect is as bright a future as I have seen. We generated $634 million in operating cash flow and retired $608 million of our debt. The collaboration and integration activities in fiscal year 2023 reinforced our confidence in our mission, vision, strategic imperatives, and outlook for the future of Coherent as exciting new opportunities emerge.

Annual Meeting of Shareholders

I am pleased to invite you to attend our 2023 Annual Meeting of Shareholders of Coherent Corp. on November 9, 2023, at 9:00 a.m. Eastern Standard Time. Our Annual Meeting will again be held by webcast, and you will be able to attend the Annual Meeting online. We believe that hosting a virtual Annual Meeting allows for greater shareholder presence. At the Annual Meeting, shareholders will vote on the matters set forth in the Fiscal Year 2023 Proxy Statement, and the accompanying notice of the annual meeting.

Your vote is important to us. Whether or not you will attend the Annual Meeting, we hope that your shares are represented and voted. In advance of the Annual Meeting on November 9, please cast your vote through the internet, by telephone, or by mail. Instructions on how to vote are found in the section entitled “How Do I Vote” in the Proxy Statement Summary.

On behalf of the Board of Directors, management, and all Coherent employees, thank you for your investment and interest in Coherent.

Sincerely,

VINCENT D. MATTERA, JR., PHD

Board Chair and Chief Executive Officer

Notice of Annual Meeting of Shareholders

VOTING

Shareholders are asked to vote on the following items at the Annual Meeting:

RECORD DATE

Shareholders of record at the close of business on September 11, 2023, are entitled to notice of, and to vote at, the Annual Meeting, and any adjournment or postponement of the Annual Meeting.

AVAILABILITY OF MATERIALS

Shareholders of record will automatically receive a printed set of proxy materials, including a proxy card. For shareholders who hold shares through a broker, bank or other nominee (commonly referred to as held in “street name”), we furnish proxy materials via the internet. If you received a Notice of Internet Availability of Proxy Materials (the “Notice”) by mail from your broker, bank or other nominee, you will not receive a printed copy of the proxy materials unless you request one. The Notice instructs you how to access and review all of the important information contained in the proxy materials over the internet. The Notice also provides instructions for submitting your proxy over the internet. If you received a Notice and would like to receive a printed copy of our proxy materials, please follow the instructions for requesting materials included in the Notice.

This proxy statement and proxy card will first be made available to shareholders on or about September 29, 2023.

By Order of the Board

RONALD BASSO, Secretary

September 29, 2023

TABLE OF CONTENTS

Proxy Statement for the

Annual Meeting of Shareholders

TO BE HELD ON NOVEMBER 9, 2023

GENERAL

The enclosed proxy is solicited on behalf of the Board of Directors (the “Board”) of Coherent Corp., a Pennsylvania corporation (the “Company” or “Coherent”), for use at the annual meeting of Shareholders (“the Annual Meeting”) to be held on November 9, 2023, at 3:00 p.m. Eastern Standard Time, or any rescheduled date. These proxy materials were first made available on or about September 29, 2023, to shareholders of record on September 11, 2023 (the “Record Date”).

The Annual Meeting will occur as a virtual meeting conducted exclusively via a live audio webcast at www.virtualshareholdermeeting.com/COHR2023. You will need your control number, included on your proxy card or Notice, to access the webcast. Please see the Company’s website at www.coherent.com/company/investor-relations/governance for further information about the Annual Meeting.

WHAT IS THE PURPOSE OF THE ANNUAL MEETING?

Shareholders will act on the matters outlined in the Notice page of this proxy statement. We are not aware of any other matters to be presented at the Annual Meeting. If any other matter is properly presented at the Annual Meeting, your proxy holder will vote your shares in his or her discretion.

WHO MAY VOTE AT THE ANNUAL MEETING?

You are entitled to vote at the Annual Meeting if our records show that you held shares of Company common stock, no par value (“Common Stock”), as of the close of business on the Record Date. As of the Record Date, 151,411,359 shares of Common Stock were issued and outstanding. In addition, 75,000 shares of the Company’s Series B-1 convertible preferred stock, no par value (“Series B-1 Preferred Stock”), and 140,000 shares of the Company’s Series B-2 convertible preferred stock, no par value (“Series B-2 Preferred Stock”, and together with the Series B-1 Preferred Stock, the “Series B Preferred Stock”), which are entitled to vote as one class with the Common Stock on an as-converted basis, were issued and outstanding as of the Record Date.

Unless the context provides otherwise, references in this proxy statement to “shareholders” means, collectively, holders of Common Stock and holders of Series B Preferred Stock.

WHAT ARE THE VOTING RIGHTS OF HOLDERS OF COHERENT COMMON STOCK AND SERIES B PREFERRED STOCK?

Each share of Common Stock is entitled to one vote on all matters submitted to a vote of the shareholders, including the election of directors. The Series B Preferred Stock is entitled to 27,387,740 votes in the aggregate, which represents the number of whole shares of Common Stock (rounded to the nearest whole share) into which the shares of Series B Preferred Stock were convertible on the Record Date. Shareholders do not have cumulative voting rights.

WHO MAY PARTICIPATE IN THE ANNUAL MEETING?

You are entitled to participate in the Annual Meeting if you were a shareholder as of the close of business on September 11, 2023, or hold a valid proxy for the Annual Meeting. To participate in the virtual Annual Meeting, including to vote, ask questions, and view the list of registered shareholders as of the Record Date, you must access the meeting website at www.virtualshareholdermeeting.com/COHR2023. To vote or submit a question, you will need the control number included on your proxy card or Notice, and to follow the instructions posted at www.virtualshareholdermeeting.com/COHR2023. If you encounter any difficulties accessing the Annual Meeting website during the check-in or meeting time, please call the technical support number that will be posted on the Annual Meeting website log-in page.

We will endeavor to answer as many shareholder-submitted questions as time permits that comply with the meeting rules of conduct. We reserve the right to group questions on the same topic, to edit inappropriate language and to exclude questions regarding topics that are not pertinent to meeting matters or Company business.

WHAT CONSTITUTES A QUORUM?

Our bylaws provide that the presence, in person (virtually) or by proxy, of shareholders entitled to cast at least a majority of votes that all shareholders are entitled to cast on the Record Date will constitute a quorum at the Annual Meeting. The virtual presence via the webcast or by proxy of shareholders entitled to cast at least 89,399,550 votes will be required to establish a quorum. Proxies received but marked as abstentions and broker non-votes (explained below) will be included as shares present when determining whether there is a quorum. If there is no quorum, the presiding officer of the Annual Meeting, or the shareholders present and entitled to cast a majority of the votes present at the Annual Meeting, may adjourn the Annual Meeting to another date.

HOW DO I VOTE?

Whether or not you plan to attend the Annual Meeting, we urge you to vote by proxy to ensure your vote is counted. If entitled to vote, you may vote:

HOW DO I REQUEST PAPER COPIES OF THE PROXY MATERIALS?

Please refer to the Notice for the ways you may request a paper copy of the proxy statement and proxy card.

CAN I CHANGE OR REVOKE MY VOTE AFTER I VOTE ONLINE OR RETURN MY PROXY CARD?

Yes. Even after you have submitted your proxy, you may change or revoke your vote at any time before the proxy is exercised. You may (i) deliver a notice of revocation or deliver a later-dated proxy to the Company’s Secretary at Coherent Corp., 375 Saxonburg Boulevard, Saxonburg, Pennsylvania 16056; (ii) submit another vote via the internet or by telephone; or (iii) vote during the Annual Meeting. Your participation in the Annual Meeting will not automatically revoke a previously submitted proxy. A shareholder’s last vote is the vote that will be counted.

WHAT ARE THE RECOMMENDATIONS OF THE BOARD?

Unless you give other instructions when you vote, the persons named as proxy holders on the proxy card will vote in accordance with the recommendations of the Board. These recommendations are set forth in the description of each proposal in this proxy statement. In summary, the Board recommends a vote:

With respect to any other matter that properly comes before the Annual Meeting, the proxy holders will vote as recommended by the Board or, if no recommendation is given, in their own discretion.

WHAT IS THE EFFECT OF ABSTENTIONS AND BROKER NON-VOTES?

For each of the matters to be voted on at the Annual Meeting, abstentions and broker non-votes will be counted for purposes of establishing a quorum but will not be counted in determining the number of votes necessary for approval. A “broker non-vote” occurs when a nominee holding shares for a beneficial owner does not vote on a particular matter because it did not receive instructions from the beneficial owner. A nominee may have discretionary authority to vote on Proposal 6 but will not be permitted to vote a beneficial owner’s shares on Proposals 1, 2, 3, 4 or 5 absent having instructions from the beneficial owner. Abstentions and broker non-votes will not be taken into account in determining the outcome of the election of directors, since they are not considered to be “votes cast”. Abstentions have the effect of a vote “AGAINST” with respect to Proposals 2, 3, 4, 5 and 6 while broker non-votes have no effect on those proposals.

MATTERS OF BUSINESS, VOTES NEEDED AND

RECOMMENDATIONS OF THE BOARD OF DIRECTORS

CORPORATE RESPONSIBILITY AND ESG HIGHLIGHTS

Our ESG strategy and programs are developed by our management team, with the guidance and direction of our Board of Directors and the Environmental, Social Responsibility and Governance Committee. We recently published our first ESG Report which described in more detail our ESG strategy and priorities. Below are some of the highlights of our environmental, social responsibility and governance programs.

DIVERSITY OF OUR FOURTEEN DIRECTORS

We believe boardroom diversity is integral to effective corporate governance and improves the quality of decision-making, strategic vision and risk management. Our Board of Directors is comprised of a diverse group of individuals with a broad spectrum of professional backgrounds. The Environmental, Social Responsibility and Governance Committee seeks to find director candidates who have demonstrated executive leadership ability and who are representative of the broad scope of shareholder interests by identifying candidates from varied industries having diverse cultural or ethnic backgrounds, viewpoints and ages. The Board of Directors believes that its current members provide this diversity. Below are self-identified diversity characteristics of our directors.

SKILLS, EXPERTISE AND EXPERIENCE OF OUR FOURTEEN DIRECTORS

The table below lists some of the key skills, experience and expertise possessed by our continuing directors and nominees for election. The skills listed below are those that are valued by our Board in guiding a complex, global manufacturing company and in overseeing our strategy for future growth. A checkmark indicates a specific area of focus or expertise on which the Board particularly relies. The biographies of our directors include more information about our directors’ relevant skills, experience and qualifications.

Joseph J. Corasanti

Enrico DiGirolamo

Michael L. Dreyer

Lisa Neal-Graves

Patricia Hatter

Vincent D. Mattera, Jr.

David L. Motley

Steven Pagliuca

Elizabeth A. Patrick

Shaker Sadasivam

Stephen A. Skaggs

Michelle Sterling

Sandeep Vij

Howard H. Xia

PROPOSAL 1 — ELECTION OF DIRECTORS

The current term of our Class Three Directors expires at the Annual Meeting. Accordingly, four directors have been nominated for election to Class Three positions, for a term of three years or until such time as their respective successors are elected and qualified, or until death, resignation or removal. Any Board vacancy may be filled by a majority of the remaining directors then in office, and any director so elected will serve for the same term that the predecessor would have served, or until his or her death, resignation or removal.

The persons named as proxies for this Annual Meeting were selected by the Board and have advised the Board that, unless authority is withheld, they intend to vote the shares represented by validly submitted proxies FOR the election of each of Joseph J. Corasanti, Patricia Hatter, Stephen A. Skaggs and Sandeep Vij.

Each of the nominees has consented to serve if elected. However, if any of them is unable or unwilling to serve as a director, the Board may designate a substitute nominee, in which case the persons named as proxies will vote for any substitute nominee proposed by the Board.

DIRECTOR CONDITIONAL RESIGNATION POLICY

Each incumbent director nominee has submitted an irrevocable conditional resignation, which is effective if the nominee receives a greater number of votes “AGAINST” than votes “FOR” that person’s election. If this occurs, the Environmental, Social Responsibility and Governance Committee (the “ESG Committee”) will recommend to the Board whether to accept or reject the resignation. The Board will act on the resignation, taking into account the ESG Committee’s recommendation, and publicly disclose its decision and the underlying rationale, within 90 days after the date the election results are certified. The incumbent director will remain as a member of the Board during this process.

INFORMATION REGARDING THE COMPANY’S BOARD

The professional and personal experience, qualifications, attributes and skills of each director nominee and the Company’s other current directors are described below and reflect the qualities that the Company seeks in its Board members. In addition to the specific examples, the Board and the Company believe that the broad-based business knowledge, commitment to ethical and moral values, personal and professional integrity, sound business judgment, and commitment to corporate citizenship demonstrated by the nominees make them exceptional candidates for these positions.

CLASS THREE DIRECTORS STANDING FOR ELECTION

Joseph J. Corasanti. Mr. Corasanti presently serves as chairman of the Board of Directors of SRC, Inc., a company that designs, manufactures and sells products and services for the defense industry. Previously, Mr. Corasanti held a number of management roles at CONMED Corporation, a medical technology company, serving as President and Chief Executive Officer from 2006 to July 2014; President and Chief Operating Officer from 1999 to 2006; Executive Vice President/General Manager from 1998 to 1999; and General Counsel and Vice President-Legal Affairs from 1993 to 1998. He also served as a director of CONMED from 1994 to 2014. From 1990 to 1993, he was an Associate Attorney with the Los Angeles office of the law firm of Morgan, Wenzel & McNicholas. Mr. Corasanti holds a B.A. degree in Political Science from Hobart College and a J.D. degree from Whittier College School of Law. Mr. Corasanti’s past executive positions and his prior public company board experience have provided him with leadership skills and experience in a variety of matters that he contributes to our Board. His experience and skill set, including his legal background and acquisition experience, are valuable to our Board.

Patricia Hatter. Ms. Hatter is currently the President and Chief Operating Officer of Opsera, an early-stage DevOps platform company, where she has served since May 2023. She previously served as the Chief Customer Officer of Palo Alto Networks, Inc., a multinational cybersecurity company, where she served from

August 2019 to December 2022. Ms. Hatter previously served as the General Manager and Senior Vice President — Services and Interim Chief Information Officer of McAfee, LLC, a global computer security software company, from January 2017 to July 2017, and was the Chief Information Officer and Senior Vice President — Operations, at McAfee, LLC, from 2010 to June 2015. Ms. Hatter additionally served as the Chief Information Officer — Intel Security and General Manager — Security & Software at Intel Corporation, a leader in the semiconductor industry, from June 2015 to January 2016. Ms. Hatter also held various leadership roles at Cisco Systems, Inc. and AT&T Corporation. Ms. Hatter served on the board of directors of Barrick Gold Corporation, an international mining company from April 2018 until January 2019, and the board of directors of Qualys, Inc., a leading provider of cloud-based security and compliance solutions, from October 2018 until August 2019. Ms. Hatter holds B.S. and M.S. degrees in Mechanical Engineering from Carnegie Mellon University. Among the attributes that qualify Ms. Hatter to serve as a member of our Board are her experience in executive roles at various cybersecurity and technology companies and her prior experience on boards of directors of public companies.

Stephen A. Skaggs. Mr. Skaggs joined the Board in conjunction with the acquisition of Coherent, Inc. on July 1, 2022. Previously, Mr. Skaggs served as a member of the board of directors of Coherent, Inc. beginning in 2013. Mr. Skaggs has been a private investor since April 2016. Previously, he held the position of Senior Vice President and Chief Financial Officer of Atmel Corporation, a leading supplier of microcontrollers, from May 2013 until its acquisition by Microchip Technology Incorporated in April 2016. Mr. Skaggs has more than 25 years of experience in the semiconductor industry, including serving as President, Chief Executive Officer, and Chief Financial Officer of Lattice Semiconductor, a supplier of programmable logic devices and related software. He was also previously a member of the board of directors of Lattice. Prior to Lattice, Mr. Skaggs was employed by Bain & Company, a global management consulting firm, where he specialized in high-technology product strategy, mergers and acquisitions, and corporate restructurings. He currently serves on the board of directors of IDEX Biometrics ASA. Mr. Skaggs holds an MBA degree from the Harvard Business School and a B.S. degree in Chemical Engineering from the University of California, Berkeley. Mr. Skaggs’ years of executive and management experience in the high-technology industry, including serving as the chief executive officer and chief financial officer of other public companies, his prior service on the board of another publicly held company, and his years of service as a director of Coherent, Inc., make him a valuable member of the Board.

Sandeep Vij. Mr. Vij joined the Board in conjunction with the acquisition of Coherent, Inc. on July 1, 2022. Previously, Mr. Vij served as a member of the board of directors of Coherent, Inc. beginning in 2004. Mr. Vij has been a private investor since February 2013. Previously, he held the position of President and Chief Executive Officer and was a member of the board of directors of MIPS Technologies, Inc., a leading provider of processor architectures and cores, from January 2010 until its sale in February 2013. In addition, Mr. Vij was the Vice President and General Manager of the Broadband and Consumer Division of Cavium Networks, Inc., a provider of highly integrated semiconductor products, from May 2008 to January 2010. Prior to that, he held the position of Vice President of Worldwide Marketing, Services, and Support for Xilinx, Inc., a digital programmable logic device provider, from 2007 to April 2008. From 2001 to 2006, he held the position of Vice President of Worldwide Marketing at Xilinx. From 1997 to 2001, he served as Vice President and General Manager of the General Products Division at Xilinx. Mr. Vij joined Xilinx in 1996 as Director of FPGA Marketing. He is a graduate of General Electric’s Edison Engineering Program and Advanced Courses in Engineering. He holds an MSEE from Stanford University and a BSEE from San Jose State University. Mr. Vij’s years of executive and management experience in the high-technology industry, including serving as the chief executive officer of another public company, his service on the board of another publicly held company, and his years of service as a director of Coherent, Inc., make him a valuable member of the Board.

CONTINUING DIRECTORS

EXISTING CLASS ONE DIRECTORS WHOSE TERMS EXPIRE IN 2024

Vincent D. Mattera, Jr. Dr. Mattera initially served as a member of the Coherent Board from 2000 until 2002. Dr. Mattera joined the Company as Vice President in 2004, and served as Executive Vice President from January 2010 to November 2013, when he became Chief Operating Officer. He was re-appointed to the Board in 2012. In November 2014, Dr. Mattera became the President and Chief Operating Officer. In September 2016, Dr. Mattera became the Company’s third President and Chief Executive Officer in 45 years and served as the Company’s President through June 2019, when the roles of President and Chief Executive Officer were separated. Dr. Mattera became the Company’s Board Chair immediately following the 2021 Annual Meeting. During his career at Coherent he has assumed successively broader management roles, including as a lead architect of the Company’s growth and diversification strategies. The platforms that the Company has added under his leadership have contributed to positioning the Company into large and transformative global growth markets while increasing our global reach, deepening our technology and IP portfolio, broadening our product roadmap and customer base, and increasing the potential of the Company.

Prior to joining the Company as an executive, Dr. Mattera had a continuous 20-year career in the Optoelectronic Device Division of AT&T Bell Laboratories, Lucent Technologies and Agere Systems, during which he led the development and manufacturing of semiconductor laser-based materials and devices for optical and data communications networks. Dr. Mattera has 37 years of leadership experience in the compound semiconductor materials and device technology, operations and markets that are core to the Company’s business and strategy. Dr. Mattera holds a B.S. degree in chemistry from the University of Rhode Island (1979), and a Ph.D. in chemistry from Brown University (1984). He completed the Stanford University Executive Program in 1996. His long tenure at Coherent offers invaluable historical knowledge about the Company. We believe that Dr. Mattera’s expertise and experience qualify him to provide the Board with continuity, and a unique perspective about the Company.

Michael L. Dreyer. Mr. Dreyer served as the Chief Operations Officer of Silicon Valley Bank from September 2015 to April 2019. Before joining Silicon Valley Bank, Mr. Dreyer was President and Chief Operating Officer of Monitise Americas, LLC, a subsidiary of Monitise Plc, a company providing mobile banking and payment services, from 2014 to September 2015. Mr. Dreyer was the global head of technology and Chief Information Officer at VISA Inc., from 2005 to 2014. Previously, Mr. Dreyer was Chief Information Officer of Inovant, LLC, a company providing electronic payment processing services. He has also held executive positions at VISA USA (Senior Vice President of Processing and Emerging Products, and Senior Vice President of Commercial Solutions). Additionally, Mr. Dreyer held senior positions at American Express Co, Prime Financial, Inc., Federal Deposit Insurance Corporation (FDIC), Downey Savings, Bank of America, and the Fairmont Hotel Management Company. Mr. Dreyer served as a member of the board of directors of Finisar Corporation (“Finisar”) from December 2015 through September 24, 2019 (the effective date of the Company’s acquisition of Finisar), and is currently a director of F5 Networks, Inc., a developer and provider of software-defined application services. Mr. Dreyer received an M.B.A. and a B.A. in psychology from Washington State University. Mr. Dreyer brings to the Board extensive executive and leadership experience, as well as expertise in various aspects of the financial and banking industries.

Stephen Pagliuca. Mr. Pagliuca is a senior advisor at Bain Capital, a leading global investment firm based in Boston with approximately $160 billion in assets under management. He previously served as Managing Director of Bain Capital Private Equity, LP, a global private equity firm, and as Co-Chair of Bain Capital, LP. He is a co-owner and Managing General Partner of the World Champion Boston Celtics and. serves on the NBA Board of Governors. Mr. Pagliuca is also co-owner and co-chairman of the Serie A professional football club, Atalanta Bergamasca Calcio. Mr. Pagliuca brings to the Board extensive global executive and leadership experience.

Elizabeth A. Patrick. Ms. Patrick was the Senior Vice President and Chief People Officer for Diebold Nixdorf, a financial and retail technology company specializing in self-service transaction systems, point-of-sale terminals, physical security products, and software and related services, from April 2019 to December 2022.

Prior to that, she was the Senior Vice President and Chief Human Resources Officer for Veritiv Corporation, a leading provider of packaging, print and facility solutions, from July 2014 to March 2019. Ms. Patrick earned her B.S. in Finance from Michigan State University, and MBA from Wayne State University. Ms. Patrick’s global experience in human capital management, executive compensation, leadership development, change management strategies, transformation and HR system implementation will prove valuable to the Company.

Howard H. Xia. Dr. Xia currently serves as a consultant to the telecommunications industry. Dr. Xia served as General Manager of Vodafone China Limited, a wholly-owned subsidiary of Vodafone Group Plc, a telecommunications company, from 2001 to 2014. From 1994 to 2001, he served as a Director, Technology Strategy for Vodafone AirTouch Plc and AirTouch Communications, Inc. He served as a Senior Staff Engineer at Telesis Technology Laboratory from 1992 to 1994, and was a Senior Engineer at PacTel Cellular from 1990 to 1992. Dr. Xia holds a B.S. degree in Physics from South China Normal University, and an M.S. in Physics and Electrical Engineering, and a Ph.D. in Electrophysics, from Polytechnic School of Engineering of New York University. Dr. Xia’s extensive knowledge of, and experience in, the telecommunications industry, his knowledge of international business, including with China, and his strong leadership skills make him a valuable member of our Board. In particular, his experience and knowledge of telecommunications in Asia contribute to the Board’s breadth of knowledge in this area.

EXISTING CLASS TWO DIRECTORS WHOSE TERMS EXPIRE IN 2025

Enrico DiGirolamo. Mr. DiGirolamo is currently a senior advisor to technology companies and manufacturing firms. From 2013 to 2017, Mr. DiGirolamo served as Chief Financial Officer and Senior Vice President of Covisint Corporation, a leading cloud computing company for the internet of Things and Identity platforms. Mr. DiGirolamo was with Allstate Insurance from 2010 to 2013, where he served as Senior Vice President, Sales and Marketing and Finance. From 2008 to 2010, Mr. DiGirolamo served as Vice President and Chief Financial Officer for General Motors in Europe. During a 31-year career with General Motors, Mr. DiGirolamo held a variety of senior executive positions throughout the corporation, including 12 years outside the United States. Mr. DiGirolamo served on the board of directors of Metromedia International Group from 2010 to 2017; Premier Trailer Leasing, Inc., from 2012 to 2013; and Identifix from 2013 to 2014. Mr. DiGirolamo holds a B.S. degree from Central Michigan University, and an M.B.A. from Eastern Michigan University, and completed the Senior Executive Program at the International Institute for Management Development in Lausanne, Switzerland. He is a member of the Dean’s Leadership Roundtable at Central Michigan University, and a member of the Detroit Opera House board of directors and board of trustees. Mr. DiGirolamo has extensive experience leading complex global businesses and has a broad financial, general management, and board oversight background.

David L. Motley. Mr. Motley has served as Managing Partner with BlueTree Venture Fund, a venture fund focused on early-stage life science and information technology opportunities, since 2012. Mr. Motley also has served as a partner in DDRC 327 NEGL, LLC, a real estate development company, since 2016, and as Chief Executive Officer and President of MCAPS, LLC, a professional services company providing corporate real estate services and information technology capabilities and services, since January 2018. From 2011 to July 2017, Mr. Motley served as Senior Managing Partner of Headwaters SC, a private equity advisory services company. Mr. Motley also serves on the boards of directors of F.N.B. Corporation, a diversified financial services company, Koppers Holdings Inc., an integrated global provider of treated wood products, wood treatment chemicals and carbon compounds, and SRI International, an independent nonprofit technology research and development organization. In addition, from January 2021 until January 2023, Mr. Motley served on the board of directors of Deep Lake Capital Acquisition Corp., a blank check company. Mr. Motley is a Cum Laude graduate of the University of Pittsburgh’s Swanson School of Engineering and a

Distinguished Alumni Awardee, a recognition provided to less than one percent of the graduates. Mr. Motley also holds an M.B.A. from the Harvard Business School. Mr. Motley brings to the Board his extensive executive experience and expertise in ESG related matters and prior experience on boards of directors of public companies.

Lisa Neal-Graves. Ms. Neal-Graves is the Chief Executive Officer of the CU School of Medicine non-profit entity, the Aurora Wellness Community, an innovative collaborative to address the social determinants of health. Before her current role, Ms. Neal-Graves served as the Chief Innovation Officer for the Colorado Attorney General, General Counsel and Chief Marketing Officer of Universal Plasma, LLC, an early-stage antenna technology company, Vice President General Manager of the Cloud Strategic Product Group for Zayo Group, and Corporate Counsel for the CIO at Intel Corp and in various roles of increasing responsibility and impact for the company’s strategic technology and research planning. Ms. Neal-Graves has also served as VP R&D, CTO, SVP/GM, and CIO positions within industry frontrunners such as Unisys, Chase, Deloitte, Lucent, and AT&T. Ms. Neal-Graves is a member of the board of directors of the Company, the vice chair of Rocky Mountain Public Media/PBS, and a board of directors member of Blackstone Entrepreneurial Network Colorado. Ms. Neal-Graves is a graduate of Hampton University, with an undergraduate degree in applied mathematics and computer science. Ms. Neal-Graves also holds a Masters in Computer Science from Michigan State University (with an emphasis in Artificial Intelligence), a Masters of Engineering from the University of Colorado Boulder, and a J.D. from the University of Colorado School of Law. Ms. Neal-Graves’ extensive executive experience in technology-related fields, including semiconductors, and legal background are valuable to the Board.

Shaker Sadasivam. Dr. Sadasivam is the Co-Founder and Chief Executive Officer of Auragent Bioscience, LLC. He also serves as Chair of the Board FTC Solar, Inc., a public company, and serves on the boards of three private companies, Sfara (developer of mobile-based safety and detection technology), Dclimate Inc. (developer of hybrid auxiliary power unit systems for the trucking industry), and Sea Pharmaceuticals, LLC (a neurotherapeutics R&D company advancing potential treatments for Tinnitus & Epilepsy). In 2016, Dr. Sadasivam retired as President and Chief Executive Officer of SunEdison Semiconductor Limited, a leading manufacturer of advanced semiconductors for electronics, a position he held from 2013. From 2009 to 2013, he served as Executive Vice President and President, Semiconductor Materials Business Unit of SunEdison, Inc. (a predecessor to SunEdison Semiconductor Limited, formerly known as MEMC Electronic Materials, Inc.). From 2002 to 2009, Dr. Sadasivam served as Senior Vice President Research and Development of SunEdison, Inc. Dr. Sadasivam holds B.S. and M.S. degrees in Chemical Engineering from the University of Madras and Indian Institute of Technology, an M.B.A. from Washington University’s Olin School of Business, and a Ph.D. in Chemical Engineering from Clarkson University. Dr. Sadasivam brings to the Board his extensive experience related to the semiconductor industry, and insight into areas including operations, product development and engineering management.

Michelle Sterling. Since 2020, Ms. Sterling has engaged in Human Resources consulting. Prior to that, Ms. Sterling was the Executive Vice President and Chief Human Resources Officer at Qualcomm, Inc., a semiconductor, software and services company serving the wireless communications industry, from February 2015 to March 2020; Senior Vice President, Human Resources from September 2007 to January 2015 and served in various capacities at Qualcomm, Inc. from July 1994 to September 2007. Throughout her tenure with Qualcomm, Ms. Sterling supported Qualcomm’s strategies in complex transactions including acquisitions, joint ventures, divestitures, integration, human capital management, and real estate and facilities. Ms. Sterling had direct responsibility for Qualcomm’s Human Resources global employees and served as a member of Qualcomm’s executive committee. Ms. Sterling holds a B.S. in Business Management from the University of Redlands. Ms. Sterling’s broad, global, senior executive leadership experience in industries related to those served by the Company, human capital management leadership experience of a large and diverse global workforce, and experience in mergers & acquisitions brings relevant and valuable experience to the Board.

MEETINGS AND STANDING COMMITTEES OF THE BOARD OF DIRECTORS

The Board met five times in fiscal year 2023. In fiscal year 2023 each director attended at least 75% of the meetings of the Board and the committees on which he or she served (held during the period in which the director served) and actual director attendance at meetings of the Board and committees on which they served (held during the period in which the director served) averaged over 95%.

The Board has four standing committees: Audit; Compensation and Human Capital; Environmental, Social Responsibility, and Governance; and Strategy, Technology, Acquisition and Risk. All Committees have written charters, which are reviewed on an annual basis, and are available on the Company’s website at www.coherent.com/company/investor-relations/governance.

The primary responsibilities of each committee include the following:

DIRECTOR INDEPENDENCE AND CORPORATE GOVERNANCE POLICIES

The Company transferred the listing of its Common Stock to the New York Stock Exchange (the “NYSE”) early in 2023. The rules of the NYSE require that a majority of the Company’s Board be Independent Directors (as defined in the NYSE’s rules). Our Corporate Governance Guidelines further provide that a substantial majority of the members of the Company’s Board must qualify as independent. The Board has determined that all of the continuing directors or nominees for election as director are independent within the meaning of the NYSE’s rules, other than Dr. Mattera. In its annual review of director independence, the Board considers all commercial, banking, consulting, legal, accounting or other business relationships any director may have with the Company to determine whether any director has a material relationship with the Company. The Board considers a “material relationship” to be one that impairs or inhibits, or has the potential to impair or inhibit, a director’s exercise of critical and disinterested judgment on behalf of the Company. When assessing the “materiality” of a director’s relationship with the Company, the Board considers all relevant facts and circumstances, from both the standpoint of the director in his or her individual capacity, and from the standpoint of the director’s family and other affiliations. In addition, the ESG Committee facilitates annual self-evaluations of the Board, the Audit Committee, the Compensation and Human Capital Committee (the “Compensation Committee”), and the ESG Committee in order to determine whether the Board and such Committees are functioning effectively. The Company is in compliance with all applicable governance requirements of the NYSE.

NOMINATION OF CANDIDATES FOR DIRECTOR

The Company considers director candidates from several sources, including existing directors, members of the Company’s management team, shareholders, and third-party search firms. The Company’s current bylaws describe the procedures by which shareholders may recommend candidates for election to the Board. In general, shareholder nominations must be made in writing, and notice of a nomination must be given to our Secretary no earlier than the close of business on the 150th day, and no later than the close of business on the 120th day, before the anniversary date of the previous year’s annual meeting. If the date of the annual meeting is changed by more than 30 days from the first anniversary date of the previous year’s annual meeting, the notice must be delivered no earlier than the close of business on the 120th day before the annual meeting and no later than the close of business on the later of (i) the 90th day before the annual meeting or (ii) the 10th day following the day on which public announcement of the date of the meeting is first made. In addition, a notice of nomination must include information regarding both the nominating shareholder and each director nominee as set forth in the Company’s bylaws, including:

Further, to be eligible for election as a director of the Company, the nominee must deliver within the timeframe noted above a written questionnaire detailing his or her background and qualifications, and a

written representation and agreement as set forth in the Company’s bylaws. The form for this representation and agreement will be provided by the Secretary of the Company upon written request.

The ESG Committee considers a variety of factors when determining whether to recommend a nominee for election to the Board, including those factors set forth in the Company’s Corporate Governance Guidelines. In general, candidates nominated for election to the Board should possess the following qualifications:

Potential candidates are screened and interviewed by a selection committee appointed by the ESG Committee.

The ESG Committee’s practice is to review the skills, experiences, and attributes of individual Board members and candidates given the current make-up of the Board, to ensure that the Board includes individuals who will serve the Company’s strategic and governance needs. We consider all dimensions of diversity in determining what mix of individuals will provide the Board a diverse portfolio of experience, knowledge, talents and perspectives. Candidates are also evaluated on their broad-based business knowledge and contacts, prominence, commitment to ethical and moral values, personal and professional integrity, sound reputation in their respective fields, as well as a global business perspective and commitment to corporate citizenship. All new directors nominated and elected to the Board since 2019 have been female and/or racially diverse (excluding those selected by Finisar, Bain and Coherent, Inc., in connection with those transactions).

BAIN BOARD NOMINATION RIGHTS

On March 30, 2021, the Company and BCPE Watson (DE) SPV, LP, a Delaware limited partnership and an affiliate of Bain Capital, LP (“BCPE”), entered into an Amended and Restated Investment Agreement (the “Amended and Restated Investment Agreement”). Pursuant to the terms of the Amended and Restated Investment Agreement, BCPE has the right to nominate one designee to our Board for so long as BCPE continues to beneficially own shares of the Company’s Series B Preferred Stock (and/or shares of Common Stock issued upon conversion) that represent at least 25% of the number of shares of Common Stock issued to BCPE on March 30, 2021, and at the closing of the Company’s acquisition of Coherent, Inc. on July 1, 2022, in each case on an as converted basis. BCPE’s designee to our Board is Stephen Pagliuca.

SIZE OF THE BOARD

As provided in the Company’s bylaws, the Board is to be composed of no less than five and no more than fourteen members, with the exact number determined by the Board based on its current composition and requirements. At present, the Board consists of fourteen members.

BOARD LEADERSHIP STRUCTURE

Effective immediately following the 2021 Annual Meeting, the Board appointed Dr. Mattera to be Board Chair. The Board believes that Dr. Mattera’s combined role of Board Chair and CEO is in the best interests of the Company and its shareholders because of his detailed and in-depth knowledge of the issues,

opportunities and challenges facing the Company, especially in light of the acquisition of Coherent, Inc. in July 2022, and his ability to identify strategic priorities essential to the future success of the Company. The Board believes that this structure is best for the Company at this time because it provides for clear leadership responsibility and accountability, while providing for effective corporate governance and oversight by an independent Board of strong and seasoned directors with an independent Lead Director.

In addition, the Board appointed Mr. DiGirolamo as Lead Independent Director, also effective immediately following the 2021 Annual Meeting. The responsibilities of the Lead Independent Director include the following:

BOARD’S ROLE IN THE OVERSIGHT OF RISK MANAGEMENT

The Board has overall responsibility for risk management oversight. Elements of risk are overseen by each of our standing committees. Material risks that are identified by a committee are brought to the attention of the full Board.

The Audit Committee oversees financial and general risk management. It receives reports from Company management, internal audit, and other advisors, and provides serious and thoughtful attention to the Company’s risk control processes and system, the nature of the material risks the Company faces, and the adequacy of the Company’s policies and procedures to respond to and manage these risks.

The Compensation Committee assesses the appropriateness and competitiveness of the Company’s executive compensation programs and reviews the Company’s compensation policies and practices for employees, including executive and non-executive officers, as they relate to the Company’s risk management practices.

The ESG Committee reviews and assesses cybersecurity risk and each quarter senior Company management provides it with a comprehensive review of cybersecurity matters. The ESG Committee also facilitates annual self-evaluations of the Board, the Audit Committee, the Compensation Committee, and the ESG Committee in order to determine whether the Board and such Committees are functioning effectively.

Operational risks and approaches to risk management are reviewed and assessed by the Strategy, Technology, Acquisition and Risk Committee.

The Board encourages management to promote a corporate culture that understands the importance of risk management and to incorporate it into the corporate strategy and day-to-day operations of the Company. The Company’s risk management approach also includes an ongoing effort to assess and analyze the most likely areas of future risk for the Company and to address them in its long-term planning process.

COMMUNICATION WITH DIRECTORS

Shareholders wishing to communicate with the Board may send written communications addressed to the Lead Independent Director, or to any member of the Board individually, in care of Coherent Corp., Attn: Secretary, 375 Saxonburg Boulevard, Saxonburg, Pennsylvania 16056. Any communication addressed to a director that is received by the Company at this address will be delivered or forwarded to the individual director as soon as practicable, except for advertisements, solicitations or other matters unrelated to the Company. The Company will forward communications received from shareholders that are addressed to the Board to the chair of the Board committee whose function is most closely related to the subject matter of the communication.

DIRECTOR MANDATORY SERVICE CONCLUSION AND SUCCESSION PLANNING

The Board has instituted a policy for directors, as set forth in the Company’s Corporate Governance Guidelines. Under this policy, a director must tender a resignation to the ESG Committee, to be effective at the end of the last regularly scheduled Board meeting prior to the director’s 76th birthday. The ESG Committee considers each case and recommends to the Board the action to be taken. The Board in its discretion chooses to accept or reject the resignation. If rejected, the director’s resignation will be deemed to be re-submitted to the ESG Committee annually thereafter, until such time as it is accepted by the Board. The Board has undertaken a succession planning process to proactively address anticipated openings on the Board.

DIRECTOR OWNERSHIP REQUIREMENTS

The Board has a stock ownership program that requires each non-employee director to own shares of Common Stock with a market value of at least five times the annual Board cash retainer (currently $425,000) no later than the third anniversary of the director joining the Board. In the event of non-compliance, the Board will consider measures appropriate to the circumstances. All current directors are required to be in compliance with this requirement, which became effective in July 2022, within five years of its effectiveness. Under the prior program, non-employee directors were required to own shares with a market value of at least $150,000 within three years of joining the Board. All of the non-employee directors who have been directors for at least three years are in compliance with that prior standard, and the Board believes that all non-employee directors are making satisfactory progress towards compliance with the new program. New directors will have five years to achieve the required ownership level of at least five times the annual retainer.

STANDING BOARD LIMITS

Board members are limited to serving on a maximum of four public company boards, including the Board.

CHANGE IN DIRECTOR OCCUPATION

Under the Company’s Corporate Governance Guidelines, when a director’s principal occupation or business association changes substantially (including retirement), the director must tender a resignation for consideration by the ESG Committee. The ESG Committee then will recommend to the Board the action to be taken with respect to the resignation.

EXECUTIVE SESSIONS OF NON-EMPLOYEE DIRECTORS

Executive sessions of independent directors are held regularly, with the Lead Independent Director presiding.

DIRECTOR ATTENDANCE AT ANNUAL MEETING OF SHAREHOLDERS

Directors are expected to attend the Annual Meeting, in person or remotely. All directors attended last year’s Annual Meeting.

CODE OF BUSINESS CONDUCT AND ETHICS

The Board has approved and adopted a Code of Ethical Business Conduct (the “Code of Conduct”) applicable to everyone in the Company and its subsidiaries, including the Board. The Code of Conduct also applies to contractors, consultants, temporary workers, suppliers, and other third parties. This document is available on the Company’s website at www.coherent.com/company/investor-relations/governance. The Company will promptly disclose on its website any substantive amendments or waivers with respect to any provision of the Code of Conduct.

Employees are required and encouraged to report suspected violations of our Code of Conduct. Reports are forwarded for review by the Audit Committee.

COMPANY POLICY REGARDING EMPLOYEE, OFFICER, AND DIRECTOR HEDGING

The Company’s insider trading policy prohibits the Company’s directors and executive officers, as well as any other employee of the Company who possesses material, non-public information about the Company, from engaging in hedging transactions. The policy does not specifically define hedging transactions, but they are intended to include the purchase of financial instruments (including prepaid variable forward contracts, equity swaps, collars, and exchange funds), or other transactions that are intended to hedge or offset any decrease in the market value of Company securities held by the individual.

REVIEW AND APPROVAL OF RELATED PERSON TRANSACTIONS

The Company’s policies and procedures regarding related party transactions are included in the Company’s Corporate Governance Guidelines. The Corporate Governance Guidelines require that all Company directors, officers and employees refrain from activities that might involve a conflict of interest. Before making an investment, accepting a position or benefit, participating in a transaction or business arrangement, or otherwise acting in a manner that creates or appears to create a conflict of interest, a full disclosure of all relevant facts and circumstances must be made, and the Audit Committee’s written approval obtained. The Audit Committee reviews and approves any transaction between the Company and any related person (as defined in Item 404 of Regulation S-K) and any other potential conflict of interest situations on an ongoing basis. Waivers of actual or potential conflicts of interest for any of the Company’s executive officers or directors may be granted only by the Board. Only those matters that are determined by the Board not to be in conflict with the best interests of the Company may be approved.

DIRECTOR COMPENSATION

The Company uses a combination of cash and equity compensation to attract and retain qualified candidates to serve on the Company’s Board. In setting director compensation, the Company consults with its independent compensation advisor, Aon, and considers the significant amount of time and skill required for directors to fulfill their overall responsibilities. Director compensation is only paid to non-employee directors. For purposes of this section, all references to “directors” means non-employee directors.

The director compensation program is periodically (generally every other year) reviewed by the Compensation Committee, with the help of Aon, to ensure that the program remains competitive. As part of this review, the types and levels of compensation offered to our directors are compared to those offered by a select group of comparable companies. The comparable companies used are the same as those used for the Company’s named executive officers (the “Comparator Group”) and are listed in the “Compensation Discussion and Analysis” section of this proxy statement.

The components of our director compensation program for fiscal year 2023 are disclosed below. The Board is compensated based on a role-based compensation program, not on the number of meetings attended. The Compensation Committee strives to set director compensation at levels that are competitive with our Comparator Group. Typically, the overall compensation level of the Company’s directors ranges between the upper end of the second quartile and the lower end of the third quartile of the Comparator Group.

DIRECTOR COMPENSATION FOR FISCAL YEAR 2023

DIRECTOR CASH COMPENSATION

DIRECTOR EQUITY PROGRAM

In addition to the cash compensation outlined above, directors receive annual equity awards. In setting the total dollar value of the equity awards, the Board takes into account cash compensation, limits in the Company’s equity plan governing documents, recommendations of the Compensation Committee and its independent compensation advisor, and Comparator Group practices. For fiscal year 2023, the Company determined the number of restricted stock units awarded by dividing the dollar value of the grant by the closing stock price on the grant date, subject to rounding. For fiscal year 2023, the nominal value of the annual equity award for full-year directors was $200,000. Restricted stock unit awards granted to directors generally vest in one year. They do not automatically vest upon a director’s departure from the Board. The Compensation Committee may recommend, and the Board may in its sole judgment approve, vesting of a restricted stock unit award upon a director’s departure from the Board if the departing director is found to be in good standing at the time of departure.

DIRECTOR COMPENSATION TABLE FOR FISCAL YEAR 2023

DIRECTOR EQUITY AWARDS OUTSTANDING

The following table sets forth the aggregate number of restricted stock units, and the number of shares that underlie exercisable stock options, that were held by the individuals who served as non-employee directors as of June 30, 2023, including options exercisable within 60 days after June 30, 2023.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

STOCK BENEFICIALLY OWNED BY PRINCIPAL SHAREHOLDERS

The following table sets forth certain information regarding the ownership by any person, including any “group” as defined in Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), known to us to be the beneficial owner of more than 5% of the issued and outstanding shares of Common Stock as of August 31, 2023. Unless otherwise indicated, each of the shareholders named in the table has sole voting and investment power with respect to the shares beneficially owned. Ownership information is as reported by shareholder in their respective filings with the SEC.

STOCK BENEFICIALLY OWNED BY DIRECTORS AND OFFICERS

The following table shows the number of shares of Common Stock beneficially owned by all directors, our named executive officers, and all of our directors and executive officers as a group, as of August 31, 2023. The beneficial ownership reflected in this table includes shares that could have been acquired within 60 days of that date through the exercise of stock options or vesting of restricted stock units. The number of shares “beneficially owned” is defined by Rule 13d-3 under the Exchange Act. Unless otherwise indicated, each individual and member of the group has sole voting power and sole investment power with respect to shares owned. None of the shares reflected in the table below have been pledged as security.

EXECUTIVE OFFICERS

Set forth below is information concerning our executive officers as of August 31, 2023.

Biographical information for VINCENT D. MATTERA, JR. may be found in the “DIRECTORS” section of this proxy statement.

MARY JANE RAYMOND was our Chief Financial Officer and Treasurer of the Company from March 2014 to September 29, 2023. She currently is a senior advisor to the Chief Executive Officer. Previously, Ms. Raymond was Executive Vice President and Chief Financial Officer of Hudson Global, Inc., from 2005 to 2013. Ms. Raymond was the Chief Risk Officer and Vice President and Corporate Controller at Dun and Bradstreet, Inc., from 2002 to 2005. In addition, she was the Vice President, Merger Integration, at Lucent Technologies, Inc., from 1997 to 2002, and held several management positions at Cummins Engine Company from 1988 to 1997. In 2019 Ms. Raymond was named to the Board of Directors and Audit Committee of Veeco, Inc. Ms. Raymond holds a B.A. degree in Public Management from St. Joseph’s University, and an M.B.A. from Stanford University.

WALTER R. BASHAW II joined the Company in 2018 and has been President of the company since July 2019. Mr. Bashaw previously served as Vice President of Strategy. In this role, he was primarily responsible for the company’s M&A and integration work. Prior to joining the Company, Mr. Bashaw was a senior partner at the law firm of Sherrard, German & Kelly, P.C. in Pittsburgh, Pennsylvania, where his areas of expertise were corporate law, mergers and acquisitions, and technology planning. Mr. Bashaw holds a J.D. from the University of Pittsburgh School of Law, from which he graduated cum laude and at which he was the editor-in-chief of the University of Pittsburgh Journal of Law and Commerce. He holds a B.S. in Logistics from the Pennsylvania State University.

GIOVANNI BARBAROSSA joined the Company in 2012 and has been the Chief Strategy Officer of the company and the President of the Materials Segment since 2019. Previously, he was the Chief Technology Officer of the company and the President of the Laser Solutions Segment. Dr. Barbarossa was employed at Avanex Corporation from 2000 through 2009, serving in various executive positions in product development and general management, ultimately serving as the President and Chief Executive Officer. When Avanex merged with Bookham Technology, forming Oclaro, Dr. Barbarossa became a member of the Board of Directors of Oclaro and served as such from 2009 to 2012. Previously, he had management responsibilities at British Telecom, AT&T Bell Labs, Lucent Technologies, and Hewlett-Packard. Dr. Barbarossa graduated from the University of Bari, Italy, with a B.S. in Electrical Engineering, and has a Ph.D. in Photonics from the University of Glasgow, U.K.

RONALD BASSO joined the Company in 2019 as Vice President, Corporate Development, and was named Chief Legal and Compliance Officer and Corporate Secretary in March 2022. Previously, Mr. Basso was the Executive Vice President of Business Development, General Counsel & Secretary for Black Box Corp. for six years. Before that, his 28-year career at Buchanan Ingersoll & Rooney PC involved significant client engagements on corporate, governance, securities, capital markets transactions, M&A, and executive compensation matters. He served on the II-VI IPO team in 1987 and as the Company’s SEC counsel for 25 years until he joined Black Box. Mr. Basso holds a bachelor’s degree (summa cum laude) in Economics and a Juris Doctor degree (Order of the Coif) from the University of Pittsburgh.

JULIE S. ENG was appointed Chief Technology Officer of the Company in October 2022. Prior to becoming CTO, Dr. Eng, 56, served as Senior Vice President and General Manager of the Company’s Optoelectronic Devices and Modules Business Unit. Dr. Eng joined the Company in 2019 with the acquisition of Finisar, where she held various senior management positions, including Executive Vice President and General Manager of 3D Sensing, and Executive Vice President of Datacom Engineering. Dr. Eng spent over 25 years in the optoelectronics and optical communications industries, including roles at AT&T, Lucent, and Agere. Dr. Eng received her PhD and M.S. in electrical Engineering from Stanford, and an M.S. and B.A. from Bryn Mawr College (summa cum laude) and a B.S., with honors from the California Institute of Technology (Caltech).

CHRISTOPHER KOEPPEN joined the Company in 2011 via the acquisition of Aegis Lightwave, Inc., where he served as General Manager, Aegis-NJ. He was named General Manager of the Agile Network Products Division in 2012 and Director of Corporate Strategic Technology Planning in 2015. He then served as Vice President of the Industrial Laser Group and Corporate Strategic Technology Planning from 2017 until his appointment as Chief Technology Officer in 2019. In October 2022, Dr. Koeppen was appointed Chief Innovation Officer of the Company. Previously, Dr. Koeppen was co-founder and CEO of CardinalPoint Optics, prior to its acquisition by Aegis Lightwave. He has more than two decades of progressively increasing general and technology management experience in high-tech companies, including at Meriton Networks, Mahi Networks, Photuris, and Lucent Technologies. Dr. Koeppen holds a Ph.D. in Physics from the University of Pennsylvania, where he was an AT&T Bell Laboratories Scholar, and B.S. degrees in Physics and Mathematics from the Pennsylvania State University.

NON-BINDING ADVISORY VOTE TO APPROVE THE COMPANY’S 2023 NAMED EXECUTIVE OFFICER COMPENSATION, AS DISCLOSED IN THIS PROXY STATEMENT (PROPOSAL 2)

As described in the “Compensation Discussion and Analysis” section of this proxy statement, we believe that we have created a pay-for-performance executive compensation program that is linked to our strategy and the drivers of long-term shareholder value, helps us attract and retain executive talent, and aligns the long-term interests of our executives and shareholders.

We urge shareholders to read the Compensation Discussion and Analysis, as well as the Summary Compensation Table, and the related compensation tables and narratives of this proxy statement. This information provides detailed information regarding our executive compensation philosophy, program, policies and processes, as well as the compensation paid to our NEOs. As has been our practice, the Company will continue to respond to investor questions during meetings occurring throughout the year.

The Board requests shareholders to vote to approve the following advisory resolution at the Annual Meeting:

RESOLVED, that the shareholders of Coherent Corp. (the “Company”) approve, on an advisory basis, the compensation of the Company’s Named Executive Officers as described and disclosed in the Compensation Discussion and Analysis, the compensation tables, and any related material contained in the proxy statement for the Company’s 2023 Annual Meeting of Shareholders.

Because this vote is advisory, it will not be binding upon the Board or the Compensation Committee. However, the Compensation Committee will take the outcome of the vote into account when considering future executive compensation arrangements.

NON-BINDING ADVISORY VOTE ON THE FREQUENCY OF FUTURE NON-BINDING ADVISORY SHAREHOLDER VOTES ON THE COMPENSATION PAID TO OUR NAMED EXECUTIVE OFFICERS (PROPOSAL 3)

After careful consideration, the Board of Directors believes that submitting the non-binding advisory vote on executive compensation on an annual basis is appropriate for the Company and its shareholders at this time. We view the non-binding advisory vote on the compensation of our named executive officers as an additional, but not the only, opportunity for our shareholders to communicate with us regarding their views on our executive compensation programs.

This advisory vote on the frequency of future advisory votes on the Company’s executive compensation is non-binding on the Board of Directors. Notwithstanding the Board’s recommendation and the outcome of the shareholder vote, the Board may in the future decide to conduct advisory votes on a more or less frequent basis and may vary its practice based on factors such as discussions with shareholders and the adoption of material changes to our compensation programs. Shareholders will be able to specify one of four choices for this proposal on the proxy card: one year, two years, three years, or abstain. Shareholders are not voting to approve or disapprove the Board’s recommendation.

EXECUTIVE COMPENSATION

FISCAL YEAR 2023 COMPENSATION DISCUSSION AND ANALYSIS

INTRODUCTION

The purpose of this Compensation Discussion and Analysis (“CD&A”) section of our proxy statement is to provide an overview of our executive compensation program, including the objectives of the program and the decisions we made with respect to each element of our executive compensation program.

The fiscal year 2023 Named Executive Officers (“NEO’s”) are listed below.

This CD&A is organized as follows:

EXECUTIVE SUMMARY

Key Aspects of Fiscal Year 2023 Executive Compensation — Strong and Growing Emphasis on Performance

Majority of CEO Compensation is Performance-Based and Variable/At-Risk

In fiscal 2023, for our CEO, 50% of target total compensation was performance based and 91% was variable and at risk. Further, in the first quarter of fiscal 2024, the Compensation Committee, with the assistance of its independent compensation consultant, augmented the performance nature of the LTI awards by increasing the proportion delivered in PSUs to 60% for the CEO and 45% for other NEOs.

The PSUs granted in fiscal 2023 are based 100% on cumulative rTSR over a 3-year period as compared to the S&P Composite 1500 — Electronic Equipment, Instruments & Components Index. The payout curve provides for target PSU shares to be earned at 50^th percentile cumulative TSR. No shares are earned if TSR is negative or if TSR is 40% or more below the 50^th percentile.

We consider compensation “at-risk” if it is dependent upon stock price appreciation or value, as in our long-term equity incentive program, or if it is subject to achievement of rigorous pre-set, objective strategic, business or operational goals, such as in our GRIP and BIP annual cash incentive programs. This high level of “at risk” compensation for our CEO in 2023 emphasizes our pay for performance philosophy. We seek to maximize the alignment between stockholder results and executive compensation by emphasizing variable pay tied to performance, with the majority of the compensation opportunity for our CEO in 2023 based on long-term equity incentives.

Additionally, for fiscal 2023 the performance-based metrics that were a part of our annual cash and long-term incentive programs further enhanced the link between pay and performance for the CEO and our other NEOs. Our annual cash incentive programs rewarded executives for performance based on the Company’s achievement of key operating goals. For fiscal 2023, the GRIP and BIP programs were tied to revenue, net income, and business operating profit goals. And the PSUs earned in fiscal 2023 (awarded in fiscal 2021 with the 3-year performance period ending June 30, 2023) were based 50% on 3-year cumulative rTSR compared to the S&P Composite 1500 — Electronic Equipment, Instruments & Components Index 50th percentile and 50% on achieving a 3-year cash flow from operations target.

The goals under all of our performance-based plans were very rigorous resulting in 0% payout under the GRIP, 0% payout under the rTSR portion of the PSUs, a partial payout under the BIP and a partial payout under the cash flow from operations portion of the PSUs, collectively demonstrating a strong emphasis on pay for performance.

Company Performance. Fiscal 2023 was the first year operating as a combined company with our acquisition of Coherent, Inc. closing on July 1, 2022. As a result of the acquisition, Coherent is a global leader in materials, networking, and lasers for the industrial, communications, electronics, and instrumentation markets operating in more than 20 countries around the world. We are market innovators defining the future through breakthrough technologies, from materials to systems that fuel market megatrends while pursuing our mission of enabling the world to be safer, healthier, closer, and more efficient.

Fiscal 2023 highlights include:

Our recent results continue to reinforce our confidence in our mission, vision, strategic imperatives, and outlook for the future of Coherent. In our fourth quarter of fiscal 2023, we delivered solid revenue and EPS, validating our diversification strategy in the face of continuing post-pandemic inventory digestion and macroeconomic weakness. Macroeconomic headwinds and uncertainty continue to affect nearly all our end markets and restrain our near-term growth and visibility. The notable exception is Datacom, which enjoyed a strong increase in demand due to the rapid rise of Artificial Intelligence and Machine Learning (AI/ML).

Fiscal Year 2023 Compensation Outcomes: Strong Pay for Performance Alignment

Our fiscal year 2023 financial performance was challenged by unfavorable product mix and under-utilization due to the sudden decline of revenues in the second half of the fiscal year. The following results of our annual and long-term incentive compensation programs reflect strong alignment between pay and performance:

Say-on-Pay Vote and Shareholder Outreach

At the 2022 Annual Meeting, the Company’s advisory vote on executive compensation received over 95% approval from the total number of votes cast. This level of support was viewed by the Compensation Committee as an indication that no significant changes to our executive compensation programs were required. The Compensation Committee will continue to consider shareholder input, including the advisory Say-on-Pay vote, as it considers the design of our executive compensation programs in the future.

COMPENSATION PHILOSOPHY AND OBJECTIVES

We have a pay-for-performance compensation program that is linked to our strategy and the drivers of long-term shareholder value. Our compensation philosophy is centered around the following elements:

Our executive compensation philosophy is reviewed annually by the Compensation Committee to maintain alignment of our strategic priorities, corporate values, shareholder value and peer group practices, and includes many best practices, as highlighted below.

EXECUTIVE COMPENSATION PROCESS

Compensation Setting Processes

Our Board has delegated to the Compensation Committee the responsibility of administering executive compensation and benefit programs, policies and practices. The Compensation Committee is composed entirely of individuals who are independent Directors under the independence standards of NYSE and the SEC. The performance of the management team is reviewed relative to performance measures, and

compensation levels for our NEOs are reviewed and approved on an annual basis. Our compensation setting process for NEOs consists of the following:

For fiscal year 2023 the Compensation Committee engaged Aon as its independent compensation consultant. Aon reports directly to the Compensation Committee, and the Compensation Committee has the sole authority to retain, terminate and obtain the advice of Aon at the Company’s expense. The Compensation Committee selected Aon as its consultant because of the firm’s expertise and experience.

The Compensation Committee has worked with Aon to: (i) assess our executive compensation objectives and components; (ii) review considerations, market practices, and trends related to short-term annual incentive plans and long-term equity and other incentive plans; (iii) collect comparative compensation levels for each of our executive officer positions, as needed; and (iv) review our compensation strategy.

While the Compensation Committee takes into consideration the review and recommendations of Aon when making decisions about our executive compensation program, ultimately, the Compensation Committee makes its own independent decisions about compensation matters.

The Compensation Committee has assessed the independence of Aon pursuant to SEC and NYSE rules. In doing so, the Compensation Committee considered each of the factors set forth by the SEC and the NYSE with respect to a compensation consultant’s independence. The Compensation Committee also considered the nature and amount of work performed for the Compensation Committee and the fees paid for those services in relation to the firm’s total revenues. Based on its consideration of the foregoing and other relevant factors, the Compensation Committee concluded that there were no conflicts of interest, and that Aon is independent.

Development of the Comparator Group

Our Comparator Group was constructed by the Compensation Committee with assistance from Aon, and includes companies we compete with for investor capital, talent, and market share. Because the Company provides a wide range of products serving multiple end markets, the Compensation Committee believes that it is important to consider peers across the Electronic Components business sector.

The Comparator Group for fiscal year 2023, which was established in July 2022 shortly after the Coherent, Inc. transaction, consisted of 23 manufacturing companies in the Electronics Components business sector and generally with revenues and market capitalization within the range of 0.3 to 3 times the Company’s revenues and market capitalization, with greater emphasis on revenue. The Compensation Committee also considered companies with a similar global footprint, number of employees and executive officer functions that are generally comparable to ours in terms of complexity and scope of responsibilities.

Fiscal Year 2023 Comparator Group

The following table summarizes our scale relative to our peer group. Financial data reflect fiscal year-end data available as of September 15, 2023.

ELEMENTS OF EXECUTIVE COMPENSATION

Our executive compensation program combines both fixed and variable elements of compensation focusing on both annual and long-term incentives. The following charts show target TDC for fiscal year 2023 (excluding the special, one-time “integration RSUs” discussed below). As discussed below, the percentage of long-term incentive awards that are performance-based has increased for Fiscal Year 2024 to better align with our shareholders.

CEO COMPENSATION MIX		AVERAGE NEO COMPENSATION MIX

The following chart summarizes the key elements of TDC for our NEOs for fiscal year 2023.

FISCAL YEAR 2023 EXECUTIVE COMPENSATION

Base Salary

The Compensation Committee annually reviews NEO base salaries. Dr. Mattera entered into a new employment agreement with the Company in August 2022 that adjusted his TDC opportunity to reflect the newly increased size and complexity of the Company following the closing of the Coherent, Inc. transaction and the related updates to the appropriate Comparator Group. The updated employment agreement

included an increased rate of base salary for Dr. Mattera consistent with the overall change in TDC. A similar adjustment was made to Dr. Barbarossa’s rate of base salary for fiscal year 2023 in connection with the Coherent, Inc. transaction.

For the other NEOs, the Compensation Committee recommended, and the Board approved annual increases in base salary to reflect the size and complexity of the Company following the closing of the Coherent, Inc. transaction, based on its assessment of current market data for similar positions in the Comparator Group and individual performance. The Compensation Committee’s approval was then reviewed and approved by the Board. The increases in NEO base salaries for fiscal year 2023 that appear in the chart below reflect these adjustments. The Compensation Committee does not expect that annual base salary increases in the future will be similar in degree, absent other circumstances.

Short-Term Incentives

We provided our NEOs with annual cash incentive award opportunities for fiscal year 2023 under two programs: (1) Bonus Incentive Program, and (2) Goals Results Incentive Program. Actual payouts under these programs for fiscal year 2023 are included under the “Non-Equity Incentive Plan Compensation” column in the Summary Compensation Table.

Bonus Incentive Program. The Bonus Incentive Program (“BIP”) is a broadly applied bonus program that has been successfully used by the Company throughout most of its history to tie the interests of our employees to the operating earnings of the Company. The BIP encourages a Company-wide focus on operating income, which we believe is a major driver of shareholder value. BIP target opportunities are 8% of base salary. Mr. Sobey was not eligible for the BIP. The performance metric for BIP is bonus operating profit (“BOP”). BOP is operating income, without the impact of cash and equity-based variable compensation. The BOP target is set based on an assumed level of BOP and qualified wages, and payouts are increased or decreased based on the combination of BOP and qualified wages (a component of operating expense) as compared to targets. If qualified wages are less than target, the BIP payout per participant will be higher, assuming targeted BOP is attained. For fiscal year 2023, lower than budgeted BOP translated to a payout of 70.51% of target.

The BOP target and adjusted results for fiscal year 2023 were:

Based on these results, the fiscal year 2023 BIP was earned at 70.51% of target.

The NEO BIP payouts for fiscal year 2023 were:

Goals Results Incentive Program. The Goals Results Incentive Program (“GRIP”) is designed to link the achievement of Company performance measures to our strategy. For fiscal year 2023, the GRIP performance measures were based on the achievement of revenue and net income targets.

The GRIP revenue and net income targets, and performance results, for fiscal year 2023 were as follows. For purposes of calculating net income, the Compensation Committee used adjusted net income, which excluded certain incremental and non-recurring costs, including transaction related costs for the Coherent, Inc. acquisition.

Based on these results, the fiscal year 2023 GRIP was earned at 0% of target, and the GRIP payouts to our NEOs for fiscal year 2023 were $0:

Long-Term Incentives

Equity Grants Made in Fiscal Year 2023. The equity compensation for our NEOs for fiscal year 2023 was composed of a mix of (a) PSUs (40%) and (b) RSUs (60%). Equity awards were targeted based on the Compensation Committee’s assessment of market data and individual performance. The awards for all NEOs were made in August 2022, at the beginning of the 2023 fiscal year. We refer to these awards as the “2023 awards.” As mentioned above, the percentage of PSUs will be higher in the 2024 fiscal year.

The “Stock Awards” column in the Summary Compensation Table and the Grants of Plan-Based Awards table later in this proxy statement, include the grant date fair value and other details for the 2023 awards and the “integration RSUs” described below.

PSUs. We believe that long-term awards tied directly to key elements of long-term shareholder value are a critical element of NEO compensation. Our PSUs are designed to reward the NEOs for driving long-term

value tied to the execution of our strategy. The fiscal year 2023 PSUs will be earned based on a single metric, rTSR—our total shareholder return relative to returns on the S&P Composite 1500—Electronic Equipment, Instruments & Components (Industry). The fiscal year 2023 PSUs will be measured over a 36-month period ending June 30, 2025. As with the fiscal year 2022 PSU design, we used rTSR as the sole performance measure for the fiscal year 2023 PSUs because we could not accurately forecast at the time of grant three-year free cash flow or other financial goals given the July 1, 2022, closing of the Coherent, Inc. transaction.

PSUs were granted to the NEOs on August 28, 2022. The following table outlines the performance metrics of the fiscal year 2023 PSUs: