375 Saxonburg Boulevard

Saxonburg, Pennsylvania 16056

Notice of Annual Meeting of Shareholders

TO BE HELD ON NOVEMBER 9, 2018

September 21, 2018

Dear Shareholder:

This year, II-VI’s annual shareholder event will again consist solely of the formal business portion of the Annual Meeting of Shareholders. This year’s Annual Meeting will be webcast from, and physically held in, a conference room at 5000 Ericsson Drive, in Warrendale, Pennsylvania 15086, on November 9, 2018, at 3:00 p.m. local time.

It is important for you to mark the appropriate box on the accompanying proxy card if you plan to attend the Annual Meeting in person. We would like to know by October 29, 2018, if you plan to attend in person. We encourage you to take advantage of the convenience of attending via webcast.

We expect the formal business of the Annual Meeting to consist of the election of directors, a non-binding advisory vote on executive compensation, approval of the 2018 Employee Stock Purchase Plan, approval of the 2018 Omnibus Incentive Plan, ratification of the Audit Committee’s selection of our independent registered public accounting firm, and any other business that validly arises at the Annual Meeting.

To ensure that your shares are represented and voted, please vote your shares as soon as possible, even if you plan to attend the Annual Meeting in person or via webcast.

On behalf of the Board of Directors and management, we would like to express our appreciation for your investment and interest in II-VI Incorporated.

Sincerely,

VINCENT D. MATTERA, JR., PHD

President and Chief Executive Officer

375 Saxonburg Boulevard

Saxonburg, Pennsylvania 16056

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 7, 2018, are entitled to notice of, and to vote at, the Annual Meeting, and any adjournment or postponement of the 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 21, 2018.

By Order of the Board

JO ANNE SCHWENDINGER, Secretary

September 21, 2018

TABLE OF CONTENTS

375 Saxonburg Boulevard

Saxonburg, Pennsylvania 16056

Proxy Statement for the

Annual Meeting of Shareholders

TO BE HELD ON NOVEMBER 9, 2018

GENERAL

The enclosed proxy is solicited on behalf of the Board of Directors (the “Board”) of II-VI Incorporated, a Pennsylvania corporation (the “Company” or “II-VI”), for use at the Annual Meeting of Shareholders (“the Annual Meeting”) to be held on November 9, 2018, at 3:00 p.m. local time, or any rescheduled date. These proxy materials were first made available on or about September 21, 2018, to shareholders of record on September 7, 2018 (the “Record Date”).

A webcast of the Annual Meeting will be available to shareholders only at www.virtualshareholder meeting.com/IIVI2018. You will need your control number, included on your proxy card or Notice, to access the webcast. The physical location of the Annual Meeting will be a conference room at 5000 Ericsson Drive, Warrendale, PA 15086. Please see the Company’s website at www.ii-vi.com/investor/investors.html for further information about the Annual Meeting.

WHAT IS THE PURPOSE OF THE ANNUAL MEETING?

Shareholders will act on the matters outlined on the cover page of this proxy statement. We are not aware of any matters to be presented at the meeting other than those described in this proxy statement. 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 your shares as of the close of business on the Record Date. As of the Record Date, 63,739,579 shares of Company common stock, no par value (“Common Stock”), were issued and outstanding.

WHAT ARE THE VOTING RIGHTS OF HOLDERS OF II-VI COMMON 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. Shareholders do not have cumulative voting rights.

WHO CAN ATTEND THE ANNUAL MEETING?

All shareholders may attend the Annual Meeting online via the Internet, or in person. To attend online, log on to www.virtualshareholdermeeting.com/IIVI2018. While all shareholders will be permitted to listen online to the Annual Meeting, only shareholders of record and beneficial owners as of the close of business on the Record Date may vote and ask questions. To vote or submit a question if you are participating online, you will need the control number included on your proxy card or Notice, and to follow the instructions posted at www.virtualshareholdermeeting.com/IIVI2018. Broadridge Financial Solutions, Inc., is hosting the webcast

and, as of 2:30 PM on the Annual Meeting date, will be available via telephone at 1-855-449-0991 toll free, or at 1-720-378-5962 for international calls, to answer your questions regarding how to attend and participate in the Annual Meeting via the Internet.

If you are a shareholder of record and plan to attend the Annual Meeting in person, please mark the appropriate box on the proxy card, or enter that information when voting by telephone or Internet prior to the Annual Meeting. We would like to know by October 29, 2018, if you plan to attend in person. If your shares are held through an intermediary, such as a broker or a bank, you will need to present proof of your ownership as of the Record Date for admission to the Annual Meeting location. Proof of ownership could include a proxy card from your bank or broker, or a copy of your account statement. All in-person attendees will need to present valid photo identification for admission. Recording devices and other electronic devices will not be permitted during the Annual Meeting.

WHAT CONSTITUTES A QUORUM?

Our bylaws provide that shareholders holding a majority of the shares of common stock issued, outstanding and entitled to vote on the Record Date constitute a quorum at the Annual Meeting. The presence in person or by proxy of holders representing at least 31,869,790 shares of Common Stock will be required to establish a quorum. Proxies received but marked as abstentions or broker non-votes (explained below) will be included as shares present when determining whether there is a quorum. If there is no quorum, the holders of a majority of shares present at the 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 II-VI Incorporated, 375 Saxonburg Boulevard, Saxonburg, Pennsylvania 16056; (ii) submit another vote over the Internet or by telephone; or (iii) vote in person at the Annual Meeting or via the Internet during the Annual Meeting. Neither your attendance in person nor your participation in the webcast will 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 5 but will not be permitted to vote a beneficial owner’s shares on Proposals 1, 2, 3 or 4 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 and 5, while broker non-votes have no effect.

MATTERS OF BUSINESS, VOTES NEEDED AND

RECOMMENDATIONS OF THE BOARD OF DIRECTORS

PROPOSAL 1—ELECTION OF DIRECTORS

The current term of our Class One Directors expires at the Annual Meeting. Accordingly, three directors have been nominated for election to Class One 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 the remaining directors then in office, and any director so elected will serve for the predecessor’s remaining term, 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 as follows:

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 Corporate Governance and Nominating Committee will recommend to the Board whether to accept or reject the resignation, or if other action should be taken. The Board will act on the resignation, taking into account the 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 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 ONE DIRECTORS STANDING FOR ELECTION

Vincent D. Mattera, Jr. Dr. Mattera initially served as a member of the II-VI 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. During his career at II-VI he has assumed successively broader management roles, including as a lead architect of the Company’s diversification strategy. He has provided vision, energy and dispatch to the Company’s growth initiatives, including overseeing the acquisition-related integration activities in the United States, Europe, and Asia - especially in China - thereby establishing additional platforms. These have contributed to a new positioning of the Company into large and transformative global growth markets while increasing considerably the global reach of the Company, deepening the technology and IP portfolio, broadening the product roadmap and customer base, and increasing the potential of II-VI.

Prior to joining II-VI 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 34 years of leadership experience in the compound semiconductor materials and device technology, operations and markets that are core to II-VI’s business and strategy. Dr. Mattera holds a B.S. 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 (1996). His 14-year tenure at II-VI underpins a valuable historical knowledge about the Company’s operational and strategic issues. We believe that Dr. Mattera’s expertise and experience qualify him to provide the Board with continuity and a unique perspective about the Company.

Marc Y.E. Pelaez. Mr. Pelaez is a Rear Admiral, United States Navy (retired). Rear Admiral Pelaez is currently a private consultant to defense and commercial companies. He was Vice President of Engineering, and later Vice President of Business and Technology Development, for Newport News Shipbuilding, from 1996 until 2001, when it was acquired by Northrop Grumman Corporation. From 1993 to 1996, Rear Admiral Pelaez served as Chief of Naval Research. He served as the Executive Assistant to the Assistant Secretary of the Navy (Research, Development, and Acquisition) from 1990 to 1993. From 1968 to 1990, he held numerous positions, including command assignments, in the United States Navy. He is a graduate of the United States Naval Academy. Rear Admiral Pelaez has a broad background and understanding of technology and technology development, a seasoned knowledge of military procurement practices, and management leadership and consulting skills developed throughout his military and civilian careers.

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 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.

CONTINUING DIRECTORS

EXISTING CLASS TWO DIRECTORS WHOSE TERMS EXPIRE IN 2019

Francis J. Kramer. Mr. Kramer joined the Company in 1983, served as its President from 1985 to 2007, its President and Chief Executive Officer from 2007 to November 2014, and its Chairman and CEO from November 2014 to September 2016. He now serves as the Company’s Chairman of the Board. Mr. Kramer holds a B.S. degree in Industrial Engineering from the University of Pittsburgh, and an M.S. degree in Industrial Administration from Purdue University. Mr. Kramer served as a director of Barnes Group Inc., an aerospace and industrial manufacturing company from 2012 to September 2016. Mr. Kramer provides our Board and the Company with guidance on growth strategy, in particular on the profitable execution of the strategy to achieve sustainable competitive advantage. He contributes considerable business development experience. He also has significant operations experience that is relevant to the Company’s strategy.

Shaker Sadasivam. Dr. Sadasivam is the Co-Founder, President and CEO of Auragent Bioscience, LLC. He also serves on the Board of four private companies, FTC Solar, Sfara, DClimate, and Sea Pharma LLC, and is a member of the Board of Trustees of Chesterfield Montessori School in Chesterfield, MO. In 2016, Dr. Sadasivam retired as President and Chief Executive Officer of SunEdison Semiconductor LLC, a leading manufacturer of advanced semiconductors for electronics, a position he held from December 2013. From 2009 to December 2013, he served as Executive Vice President and President, Semiconductor Materials Business Unit of SunEdison, Inc. (a predecessor to SunEdison Semiconductor LLC, 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 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.

Enrico Digirolamo. Mr. Digirolamo was appointed to the Board in May 2018. He 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 2010-2013, where he served as Senior Vice President, Sales and Marketing and Finance. From 2008 to 2010 Mr. Digirolamo served as Vice President and CFO 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 2010-2017; Premier Trailer Leasing, Inc., from 2011-201; and Identifix from 2013-2014. Mr. Digirolamo holds a B.S. 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 a broad CFO, general management, and board background.

EXISTING CLASS THREE DIRECTORS WHOSE TERMS EXPIRE IN 2020

Joseph J. Corasanti. Mr. Corasanti presently serves as a member of the Board of Directors and Chair of the Audit Committee for SRC, Inc., a non-profit research and development company. 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.

William A. Schromm. Mr. Schromm has served in various roles at ON Semiconductor Corporation, a leading manufacturer of energy-efficient, low-cost, high-volume analog, logic and discrete semiconductors, which was separated from Motorola in 1999. At ON Semiconductor, Mr. Schromm has served as Executive Vice President and Chief Operating Officer since 2014. Prior to that, he served as Senior Vice President, Operating Systems and Technology from 2012 to 2014, and as Senior Vice President, General Manager, Computing and Consumer Products from 2006 to 2012. Prior to joining ON Semiconductor, he worked for 19 years at Motorola in various roles, including Process Engineer, Product Manager, Operations Manager and Marketing Director. He brings extensive engineering, management and marketing experience to our Board.

MEETINGS AND STANDING COMMITTEES OF THE BOARD OF DIRECTORS

The Company’s Board held four regularly scheduled meetings, and 14 special meetings during fiscal year 2018. Each scheduled quarterly meeting took place over a two-day period. In fiscal year 2018, each director attended at least 75% of the aggregate of (a) the total number of meetings of the Board and (b) the total number of meetings for the committees of which he or she was a member. The Board and committees of the Board have the authority to hire independent advisors to help fulfill their respective duties.

The Board has four standing committees: Audit; Compensation; Corporate Governance and Nominating; and Subsidiary. All Committees have written charters that may be found on the Company’s website at www.ii-vi.com/investor/investors.html.

DIRECTOR INDEPENDENCE AND CORPORATE GOVERNANCE POLICIES

The Rules of the Nasdaq Stock Market require that a majority of the Company’s Board be Independent Directors (as defined in the Nasdaq 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 Nasdaq Rules, other than Mr. Kramer and 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.

NOMINATION OF CANDIDATES FOR DIRECTOR

The Company will consider director candidates from several sources, including existing directors, members of the Company’s management team, shareholders, and third-party search firms. Enrico Digirolamo was appointed to the Board in May 2018, and was recommended to the Board by a third party search firm. The Company’s current bylaws describe the procedures by which shareholders may recommend candidates for election to the Board. In general, such nominations must be made by a shareholder in good standing, be in writing and be received by our Chairman of the Board no later than the close of business on the 120th day, and no earlier than the close of business on the 150th day, before the anniversary date of the mailing date of the Company’s proxy statement in connection with the previous year’s annual meeting. In addition, nominations must include information regarding both the nominating shareholder and the director nominee, including, their relationship to each other; any understanding between them regarding the nomination; the shares owned by the nominating shareholder; and other information concerning the proposing shareholder and/or nominee that is required for inclusion in a proxy statement filed with the SEC. 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 Corporate Governance and Nominating 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 and Nominating Committee Charter. In general, candidates nominated for election to the Board should possess the following qualifications:

Potential candidates are initially screened and interviewed by the Corporate Governance and Nominating Committee and/or a third party search firm.

Although the Board does not have a formal diversity policy, the Corporate Governance and Nominating Committee’s practice is to review the skills and attributes of individual Board members and candidates for the Board within the context of the current make-up of the full Board, to ensure that the Board as a whole is composed of individuals who, when combined, provide a diverse portfolio of experience, knowledge, talents

and perspectives that will serve the Company’s governance and strategic needs. Candidates are also evaluated as to 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 members of the Board may interview the final candidates. The same evaluation procedures apply to all candidates for nomination, including candidates submitted by shareholders.

SIZE OF THE BOARD

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

BOARD STRUCTURE AND LEAD INDEPENDENT DIRECTOR

As part of the Board’s ongoing succession planning and leadership transition processes, the Board separated the roles of Chairman and CEO in September 2016, so as to enhance the stability of leadership and provide continued decisive leadership and seamless operation of the Company. Accordingly, Francis J. Kramer currently serves as Chairman, and Dr. Vincent D. Mattera, Jr. serves as President and CEO.

Regardless of whether, in the future, the roles of Chairman and CEO are combined or remain separated, the Company intends to retain the position of Lead Independent Director, which is currently held by Rear Admiral Pelaez. The primary responsibilities of the Lead Independent Director include:

BOARD’S ROLE IN THE OVERSIGHT OF RISK MANAGEMENT

The Audit Committee has been designated to take the lead in overseeing the Company’s risk management at the Board level. The Audit Committee schedules time for periodic review of risk assessment and activities being undertaken by management throughout the year as part of its duties. The Audit Committee receives reports from Company management, internal audit, and other advisors, and strives to provide serious and thoughtful attention to the Company’s risk management processes and system, the nature of the material risks the Company faces, and the adequacy of the Company’s policies and procedures that respond to and mitigate these risks. Although the Audit Committee leads these efforts, risk management is periodically reviewed with the full Board, and feedback is sought from each director as to the most significant risks that the Company faces. Risk management is also reviewed and assessed by the Subsidiary Committee of the Board. Risks identified by the Subsidiary Committee are brought to the attention of the full Board.

In addition to the compliance program, 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 II-VI Incorporated, 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, directors must voluntarily separate from the Board after the last regularly scheduled Board meeting prior to reaching the age of 75. The Board has undertaken a succession planning process to proactively address future openings on the Board. As part of this process, the Corporate Governance and Nominating Committee expects to evaluate new director candidates in the 2019 fiscal year using the criteria described in the “Nomination of Candidates for Director” section of this Proxy Statement under the heading “Director Independence and Corporate Governance Policies.”

DIRECTOR OWNERSHIP REQUIREMENTS

The minimum beneficial share ownership amount for members of the Board is a number of shares having a value of $150,000, which represents approximately three times the current annual Board cash retainer. A new Board member will have three years from the date of joining the Board to comply with this ownership requirement. In the event of non-compliance, the Board will consider measures appropriate to the circumstances.

STANDING BOARD LIMITS

Board members are limited to serving on a maximum of four public company boards, including the Company. No director currently serves on any other public company boards.

CHANGE IN DIRECTOR OCCUPATION

Under the Company’s Corporate Governance Guidelines, when a director’s principal occupation or business association changes substantially during his/her tenure, the director must tender a resignation for consideration by the Corporate Governance and Nominating Committee. The Committee then will recommend to the Board any action needed regarding the proposed resignation. Each director is limited to one employee director role.

EXECUTIVE SESSIONS OF NON-EMPLOYEE DIRECTORS

Executive sessions of non-employee 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. All directors attended last year’s Annual Meeting.

CODE OF BUSINESS CONDUCT AND ETHICS

The Board has approved and adopted a Code of Business Conduct and Ethics (the “Code of Conduct”) applicable to all directors, officers and employees of the Company and its subsidiaries. In addition, the Company has adopted an additional Code of Ethics for Senior Leaders. Designated senior leaders are required to sign the Code of Business Conduct and Ethics every year. These documents are available on the Company’s website at www.ii-vi.com/investor/Investors.html. The Company will promptly disclose on its website any substantive amendments or waivers with respect to any provision of the Code of Conduct and any provision of the Code of Ethics for Senior Leaders.

Employees are required and encouraged to report suspected violations of our Code of Conduct on an anonymous basis. Anonymous reports are forwarded for review by the Audit Committee.

REVIEW AND APPROVAL OF RELATED PERSON TRANSACTIONS

The Company’s policies and procedures regarding related party transactions are included in the Code of Conduct. The Code of Conduct specifically requires that all Company directors, officers and employees refrain from activities that might involve a conflict of interest. Additionally, the Code of Conduct requires each Company director, officer and employee to openly and honestly handle any actual, apparent or potential conflict between that individual’s personal and business relationships and the Company’s interests. Before making any investment, accepting any position or benefit, participating in any transaction or business arrangement, or otherwise acting in a manner that creates or appears to create a conflict of interest, such person must make a full disclosure of all relevant facts and circumstances to, and obtain the prior written approval of, the Company. Waivers under the Code of Conduct for any of the Company’s executive officers or directors are granted only by the Board or a properly designated committee of the Board. It is expected that only those matters that are in the best interest of the Company would be approved or waived under our Code of Conduct.

DIRECTOR COMPENSATION IN FISCAL YEAR 2018

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, Radford, an Aon Hewitt company (“Radford”) 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.

Our director compensation program is periodically reviewed by our Compensation Committee, with the help of the Company’s independent compensation advisor, to ensure 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 2018 are disclosed below. The Board is compensated based on a role-based compensation program, not based on the number of meetings attended, with the exception of activities of the Subsidiary Committee. Attendance at Subsidiary Committee meetings is compensated on a per-meeting basis due to the fact that there is not a set number of meetings for which attendance is required. 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 compensation provided by the Comparator Group.

DIRECTOR COMPENSATION STRUCTURE FOR FISCAL YEAR 2018

DIRECTOR CASH COMPENSATION

DIRECTOR EQUITY PROGRAM

In addition to the cash compensation outlined above, directors receive annual equity awards, typically in August of each fiscal year. In August 2018, each director (other than Mr. Digirolamo, who joined the Board in May 2018) received a grant of 5,700 stock options at an exercise price of $35.25 per share, and a restricted stock award grant of 2,280 shares of Common Stock. Stock options granted to directors generally have the same terms as those granted to our employees, including vesting occurring in four equal annual installments, and a term of ten years, but do not automatically vest upon a director’s departure from the Board. The Compensation Committee may recommend and the Board may approve, in its sole discretion, that a stock option award will vest upon departure from the Board, with an exercise period not to exceed five years. Restricted stock awards also generally have the same terms as those granted to our employees, including annual vesting of one-third of the award over three years, but do not automatically vest upon a director’s departure from the Board. The Compensation Committee may recommend and the Board may approve, in its sole discretion, that a restricted stock award will vest upon a director’s departure from the Board.

DIRECTOR COMPENSATION TABLE FOR FISCAL YEAR 2018

DIRECTOR EQUITY AWARDS OUTSTANDING

The following table sets forth the aggregate number of shares of restricted stock and shares of underlying stock options held by the named directors as of June 30, 2018.

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, 2018. 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 the shareholder in their respective filings with the SEC.

STOCK BENEFICIALLY OWNED BY DIRECTORS AND OFFICERS

The following table shows the number of shares of II-VI Common Stock beneficially owned by all directors, our named executive officers (as reflected in the “Summary Compensation Table”), and all of our directors and executive officers as a group, as of August 31, 2018. This includes shares that could have been acquired within 60 days of that date through the exercise of stock options. 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.

SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

Section 16(a) of the Exchange Act, requires the Company’s directors, executive officers and persons who beneficially own more than 10% of a class of the Company’s registered equity securities to file with the SEC and deliver to the Company initial reports of ownership and reports of changes in ownership of such registered equity securities.

The Company’s directors and executive officers timely filed all reports due under Section 16(a) during the period from July 1, 2017, through June 30, 2018, except that one late Form 4 on behalf of Jo Anne Schwendinger was filed to report the withholding by the Company of 790 shares to discharge withholding tax obligations in connection with the vesting of restricted shares on March 6, 2018, and one late Form 4 on behalf of Francis J. Kramer was filed to report the withholding by the Company of 25,000 and 2,208 shares to discharge withholding tax obligations in connection with the vesting of restricted shares on March 2, 2017, and March 2, 2018, respectively.

EXECUTIVE OFFICERS

Set forth below is information concerning our Named Executive Officers (“NEOs”) discussed herein as of June 30, 2018.

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

MARY JANE RAYMOND has been Chief Financial Officer and Treasurer of the Company since March 2014. 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. Ms. Raymond holds a B.A. degree in Public Management from St. Joseph’s University, and an M.B.A. from Stanford University.

GARY A. KAPUSTA joined II-VI in February 2016, serving as Chief Operating Officer. Prior to his employment with the Company, Mr. Kapusta served in various roles at Coca-Cola, including as President & Chief Executive Officer, Coca-Cola Bottlers’ Sales & Services L.L.C.; and President, Customer Business Solutions, and Vice President, Procurement Transformation, of Coca-Cola Refreshments. He joined Coca-Cola following a 19-year career at Agere Systems, Lucent Technologies, and AT&T. Mr. Kapusta graduated from the University of Pittsburgh with B.S. and M.S. degrees in Industrial Engineering, and holds an M.B.A. from Lehigh University.

GIOVANNI BARBAROSSA joined II-VI in October 2012, and has been the President, Laser Solutions Segment since 2014, and the Chief Technology Officer since 2012. 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 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 2011. Previously, he held senior management roles in the Optical Networking Division of Agilent Technologies and in the Network Products Group of Lucent Technologies. He was previously a Member of Technical Staff, then Technical Manager at AT&T Bell Labs, and a Research Associate at British Telecom Labs. Dr. Barbarossa graduated from the University of Bari, Italy, with a B.S. degree in Electrical Engineering, and holds a Ph.D. in Photonics from the University of Glasgow, U.K.

JO ANNE SCHWENDINGER was appointed to the position of General Counsel and Secretary of II-VI Incorporated in March 2017, and assumed the role of Chief Legal and Compliance Office and Secretary in November 2017. Prior to joining II-VI, from August 2016 to March 2017, Ms. Schwendinger was in the private practice of law at Blank Rome LLP, where she was a member of the firm’s Corporate Mergers & Acquisitions and Securities group. Before joining Blank Rome, Ms. Schwendinger held various positions, from February 2000 to August 2016, at Deere & Company, including Regional General Counsel for Asia-Pacific and Sub-Saharan Africa. Ms. Schwendinger currently serves on the global Board of Directors of the Association of Corporate Counsel. Ms. Schwendinger holds a Bachelor’s degree from the Université d’Avignon et des Pays de Vaucluse, and a Master’s degree from the Université de Strasbourg. Her Juris Doctor degree is from the University of Pittsburgh School of Law.

EXECUTIVE COMPENSATION

FISCAL YEAR 2018 COMPENSATION DISCUSSION AND ANALYSIS

INTRODUCTION

Our Compensation Discussion and Analysis explains the key features of our executive compensation program for fiscal year 2018 and the Compensation Committee’s approach in deciding fiscal year 2018 compensation for our NEOs. We have divided this discussion into six parts:

COMPENSATION PHILOSOPHY AND OBJECTIVES

Overview

The Company believes in setting challenging objectives and requires talented and committed people to achieve them. The Company’s executive compensation program is designed to align our executives’ compensation with the market and the interests of our shareholders, and to attract, motivate and retain high-quality executive talent.

The Company’s executive compensation philosophy is based on the principle of pay-for-performance, with a substantial portion of total direct compensation (“TDC”) being at risk, and tied to performance. TDC refers to the sum of base salary, annual cash incentives and annual equity-based awards, which collectively form the core of our executive compensation program. We target TDC in the range of median level of pay of our Comparator Group for performance at target. Actual compensation received by the NEOs may be higher or lower than the competitive median depending on our performance results.

The primary objectives of our fiscal year 2018 executive compensation program were:

Shareholder Outreach

For fiscal year 2017, the Company received over a 97% non-binding favorable vote on executive compensation. This followed a year of ongoing investor interactions, including more than 30 days spent with investors in person, and the final implementation of compensation changes identified from the fiscal year 2015 shareholder vote. The Compensation Committee believes that the 2017 vote indicated strong support for the changes we made to our executive compensation program. Accordingly, the Compensation Committee did not make any material changes to the compensation program for fiscal year 2018.

Given the actions we took after 2015, our strong 2017 vote, and the fact that we made no material program changes in fiscal year 2018, there were no compensation matters for which the Company needed to solicit the shareholders’ views in fiscal year 2018. The Company did, however, continue to reach out to shareholders.

During fiscal year 2018, the Company interacted live with investors holding a minimum of 65% of our outstanding shares, in most cases more than once, and 89% of shareholders who individually hold 2% or more of the stock during the year. The Company has many small investors, with approximately 87% of our individual shareholders holding 0.5% or less of the outstanding stock, and collectively accounting for less than 18% of our outstanding shares. We met with 14% of those smaller investors.

The Company’s time with investors focused primarily on the Company’s performance, strategy and metrics for ensuring short and long term revenue and earnings growth.

On November 8, 2017, the Company held its first ever investor day in New York City. The Company endeavored to invite all shareholders as of June 30, 2017, for which contact information was accessible, via an electronic invitation. We also invited more recent investors if their interest in the Company was disclosed to us in time to be invited before we reached the capacity of the venue. Approximately 80 current, past and potential investors attended. The program took place over four hours, approximately half of it dedicated to questions. The focus of the program was a cohesive review of the Company’s strategy, end market opportunities, relationship of the Company’s differentiated materials capabilities to each one of those opportunities, and the Company’s goals for financial returns. The feedback from investors was strongly positive.

Compensation Decisions Aligned to Our Performance

Recap of the Company’s Performance in Fiscal Year 2018. Detailed below are the abbreviated results of the Company’s performance for fiscal year 2018. For a more detailed review, please see the Company’s Annual Report on Form 10-K for the fiscal year 2018, filed with the SEC on August 28, 2018.

Alignment of Executive Pay and Company Performance in Fiscal Year 2018. The performance described above drove our fiscal year 2018 compensation decisions for the NEOs:

ELEMENTS OF TOTAL DIRECT COMPENSATION

TDC combines both fixed and variable elements, with variable elements based on Company performance. The Company pays incentive compensation only after the Compensation Committee has certified the Company’s operating results and approves the compensation award. In certifying the results, the Committee ensures that it has received the audit of our financial performance by the Company’s Independent Accountants, and the report of the Audit Committee with respect to the Company’s audited financial statements.

To achieve our compensation objective of driving continuous improvements in performance we set TDC so that:

Figure A and Figure B below show that variable compensation makes up approximately 71% and 62% of the fiscal year 2018 target TDC of our CEO and NEOs, respectively.

CEO COMPENSATION MIX		NEO COMPENSATION MIX

NEO compensation for fiscal year 2018 included the following elements, as described below. For ease of understanding, the term “non-equity incentive plan compensation” in the Summary Compensation Table and other tables below is referred to as “cash incentives.” The following chart summarizes the key elements of TDC for our NEOs for Fiscal Year 2018.

FISCAL YEAR 2018 TOTAL DIRECT COMPENSATION DECISIONS AND RESULTS

Base Salary

The Compensation Committee annually reviews NEO base salaries. For fiscal year 2018, the Compensation Committee approved annual merit increases in base salary based on its assessment of current market data for similar positions in the Comparator Group and individual performance. Compensation Committee approval is then reviewed and ratified by the Board. The increases in NEO base salaries for fiscal year 2018 that appear in the chart below reflect these adjustments.

Actual base salary amounts paid for fiscal year 2018 are included under the “Base Salary” column in the Summary Compensation Table later in this Proxy Statement.

Cash Incentives

We provided our NEOs with annual cash incentive award opportunities for fiscal year 2018 under two programs: (1) Bonus Incentive Program (BIP) and (2) Goal / Results Incentive Program (GRIP), as described below. Actual payouts under these programs for fiscal year 2018 are included under the “Non-Equity Incentive Plan Compensation” column in the Summary Compensation Table later in this Proxy Statement.

Bonus Incentive Program (“BIP”). The BIP is a Company-wide bonus program that has been successfully used by the Company throughout most of its history, to tie the interests of all of our employees who have at least six months of service, regardless of position, to the operating earnings of the Company, which is a major driver of shareholder value. This plan drives a Company-wide focus on achieving targeted Bonus Operating Profit (BOP), and is evaluated on that basis. BOP is the Company’s annual operating profit before reduction for variable employee compensation (both cash and equity). At the beginning of the Company’s fiscal year, the Compensation Committee determines the percentage of final approved budgeted annual operating profit available to be paid under the BIP for the year. This determination is based on total budgeted annual salary of all eligible employees. Actual payouts under the BIP could deviate from the budgeted payout due to changes in actual operating results as compared to budgeted operating results, and changes in the participant pool. The BIP is paid at 75% of the earned amount at the end of each of the first three fiscal quarters, based on interim financial performance. The final payment is made after fiscal year end, at which time the balance of the full year payout is paid.

The BOP target and actual performance results for fiscal year 2018 compared to fiscal year 2017 (in $ millions, except percentages) were:

The NEO payouts under our BIP for fiscal year 2018 were:

Goals/Results Incentive Program (“GRIP”). This program focuses achieving revenue and net income goals for the year. The purpose of the GRIP cash incentive program is to link pay to the major drivers of increasing shareholder value – growth in revenue and growth in net income. The GRIP for fiscal year 2018 was based solely on achievement of revenue and net income targets set by the Compensation Committee. Net income was used rather than earnings per share to eliminate variability based on share count.

The revenue and net income calculation methodology is derived from the GRIP Matrix. The bottom, or the threshold, of the matrix is normally the prior fiscal year’s results for revenue and net income, unless there is a significant one-time event or an expected market or investment change. At the threshold, the payout is 30% of the target amount. Below the threshold, the payout is zero. The middle of the matrix is the current year’s revenue and net income targets as approved by the Compensation Committee. These targets are designed to motivate achievement of challenging goals and drive rTSR. The upper right of the matrix is the achievement maximum, set at 115% of the revenue and net income targets, at which the payout is 200% of the target amount. The GRIP payout is calculated by interpolation within the matrix. Revenue and net income are equally weighted.

For purposes of calculating the relevant net income for fiscal year 2018, the Company used adjusted net income, and excluded the effects of (i) the acquisitions of Integrated Photonics Inc., and II-VI Compound

Semiconductor Ltd., and a reported equity investment, (ii) the total expense associated with the Company’s $345 million convertible debt issuance and the Tax Cuts and Jobs Act, because these items were not contemplated in the original targets. The excluded items consist of the operating results and transaction fees II-VI paid on behalf of the acquisitions, and the costs associated with convertible debt, including the one-time transaction expenses, interest differential, amortization of the convertible debt discount, debt issuance costs, and the impact of the Tax Cuts and Jobs Act.

The targets and performance for the revenue and net income for GRIP for fiscal year 2018 are:

Total GRIP payouts to our NEOs under our GRIP were:

Equity Incentives

In this section, we describe both equity grants made in fiscal year 2018 to our NEOs and the results of prior-year performance share awards that became earned based on performance through the end of fiscal year 2018.

Equity Grants Made in Fiscal Year 2018. The equity compensation for our NEOs for fiscal year 2018, consistent with recent practice, was made up of a balanced mix of (a) stock options (30%), (b) restricted shares (30%) and (c) performance shares (40%). Equity awards were targeted based on the Committee’s assessment of market data and individual performance for the CEO represents 65% of his TDC and for the other NEOs approximately 50% of their TDC. The awards were granted in August 2017 at the beginning of the 2018 fiscal year, and we therefore refer to them as the “2018 awards.”

The grant date fair value for the 2018 awards are included in the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table later in this Proxy Statement. Additional details about the 2018 awards are included in the Grants of Plan-Based Awards table later in this Proxy Statement. The following provides additional discussion about the 2018 awards.

Nonqualified Stock Options (“Stock Options”). Because financial gain from stock options is only possible if the price of our Common Stock increases during the term of the stock option, we believe grants encourage NEOs and other employees to focus on actions and initiatives that should lead to a longer-term increase in the price of our Common Stock, aligning the interests of our NEOs and other employees who receive them with those of our shareholders. Typically, stock options are granted in August and are 30% of the total targeted equity award to the NEO. The strike price is set on the date of the grant and represents the fair market value of the Company’s Common Stock on that day. The options vest at the rate of 25% per year and expire after 10 years. The options do not have any tangible value if the stock price does not increase.

The fiscal year 2018 stock options were granted to the NEOs with a strike price $35.25 per share, the closing price (and fair market value) of the Company’s stock on August 18, 2017. The stock options have a 10-year term and vest in four equal annual installments. Stock options granted to the NEOs on August 18, 2017, were as follows:

Restricted Stock Award (“RSAs”). The Compensation Committee uses RSAs to enhance the retention value of our equity program, and help ensure an acceptable risk taking environment. The value of restricted stock awards is set in August at approximately 30% of the total targeted equity award to the NEO. RSAs vest at the rate on one-third per year over a three-year period.

The fiscal year 2018 RSAs were granted to our NEOs on August 18, 2017, with a fair market value of $35.25 per share, the closing price of the Company’s stock on that date. The RSAs vest at the rate of one-third per year over a 3-year period. RSAs granted to the NEOs on August 18 2017, were as follows:

Performance Share Awards (“PSAs”). The Compensation Committee believes that longer term awards tied directly to elements of shareholder value are beneficial to the sustainable management of the Company. Because Relative Total Shareholder Return (“rTSR”) and cash flow from operations influence increases in shareholder value over time, the Company has based its PSAs on those metrics, in order to reward both carefully considered strategic actions and excellent management and execution. Typically, PSAs are granted at the beginning of the fiscal year and are 40% of the total targeted equity award to each NEO. PSAs have a 3-year performance period. The number of PSAs actually earned is determined shortly after the end of the performance period based on the applicable performance results.

The PSAs granted in fiscal year 2018 depend on the achievement of two metrics, cash flow from operations and rTSR. These metrics are equally weighted, and operate independently of one another. The number of PSAs earned is determined by the Compensation Committee, and is based on performance compared to the target for the full performance period.

Cash Flow from Operations Awards. These awards (the “2018 Cash Flow Performance Awards”) will be earned based on the achievement of specific consolidated cash flow metrics established for the thirty-six month period ending June 30, 2020. The 2018 Cash Flow Performance Awards will be earned as follows:

rTSR Awards. These awards focus on achieving certain levels of shareholder value compared to the Russell 2000 index. The Compensation Committee believes that rTSR is one important reflection of Company performance, and recognizes that our shareholders invest in the Company with the expectation that we will deliver a level of performance that creates value. As such, the 2018 rTSR Performance Awards will be earned based on achieving cumulative rTSR for the thirty-six month period ending June 30, 2020, compared to returns on the Russell 2000 index, as follows:

Target award amounts for PSAs for fiscal year 2018 granted on August 18, 2017, for the NEOs are as follows:

rTSR Performance Share Awards Earned in Fiscal Year 2018.

At June 30, 2018, each of the Company’s NEOs other than Mr. Kapusta and Ms. Schwendinger had a TSR award granted in August 2015 under the 2012 Omnibus Incentive Plan (the “2015 TSR Awards”) and for which the 36-month performance period ended on June 30, 2018 (the 2015 TSR Award Performance Period”). The 2015 TSR Awards were earned based on total shareholder return, the Company’s stock outperformed the Russell 2000 50^th percentile by 115%, the payout falls more than 40% above the Russell 2000 resulting in a payout of 200%.

Note that, in August of 2016, the performance period for the Cash from Operations metric was increased from two years to three years, and therefore there is no payout for this metric in FY18.

PROCESS FOR SETTING COMPENSATION FOR FISCAL YEAR 2018

Compensation Committee Matters and Scope of Authority

The Compensation Committee acts on behalf of the Board to establish the compensation of executive officers of the Company, and provide oversight of the Company’s compensation philosophy. In determining fiscal year 2018 NEO compensation, the Compensation Committee was advised by its independent compensation advisor. Radford was retained by, and reported directly to, the Compensation Committee. Radford performed no other work for the Company, or for the members of the Board, other than its advisory services related to compensation. Radford had no prior relationship with our Chief Executive Officer or with any other executive officer or director.

Development of the Comparator Group

Our Comparator Group was constructed by the Compensation Committee with assistance from Radford, 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 with Global Industry Classification Standard (“GICS”) codes that align with the Company’s multiple segments. The Comparator Group for fiscal year 2018 consisted of 19 manufacturing companies with GICS codes that reflect the Company’s lines of business:

Companies in the Comparator Group had revenues ranging from $0.4 billion to $1.7 billion, with median revenues of $0.9 billion. In structuring the Comparator Group, the Compensation Committee focuses on (a) industry, (b) total revenue and profitability, (c) annual revenue growth, and (d) global footprint. The

Comparator Group also has executive officer functions that are generally comparable to ours in terms of complexity and scope of responsibilities. For fiscal year 2018 compensation decisions, the Comparator Group consisted of:

Fiscal Year 2018 Comparator Group

The Compensation Committee’s Processes

The Compensation Committee utilizes a number of processes to assist it in ensuring that the Company’s executive compensation program achieves its objectives. Among those are:

Application of Judgment

The Compensation Committee believes that the application of its collective experience, business judgment, and current objective market data provided by its independent compensation advisor significantly contribute to the overall compensation setting process. While market data provide an important tool for analysis and decision-making, the Compensation Committee realizes that these data do not necessarily provide a complete picture of an executive’s performance and contributions to the Company. Consequently, the Compensation Committee also gives serious consideration to an individual’s personal contribution to the Company, including his or her individual skill set, qualifications, experience and demonstrated performance. The Company values and seeks to reward performance that develops talent within the Company, embraces the sense of urgency that distinguishes the Company, and demonstrates the qualities of imagination and drive to resolve longer-term challenges or important new issues. These and similar other competencies are not easily correlated to typical compensation benchmarking data, but deserve and receive consideration in reaching compensation decisions. The market data provided by our independent compensation advisor provide the Compensation Committee and senior management with the foundation for applying to compensation decisions.

COMPENSATION AND RISK

The Company’s compensation programs are designed to motivate and reward our employees and executive officers for their performance as well as Company performance, and for prudent risk-taking during the fiscal year and over the long term. The Compensation Committee periodically reviews our compensation policies and practices to ensure that they do not encourage our executives or other employees to take inappropriate risks. Based on these reviews, and a review of the Company’s internal controls, the Compensation Committee and management have concluded that our policies and practices are sound, and do not encourage executives or other employees to take excessive risks that would be reasonably likely to have a material adverse effect on the Company.

Compensation programs for our executives and other employees include the following risk mitigation features, which we believe reduce the tendency for excessive risk taking, and reduce the incentive to maximize short-term results at the expense of long-term results and value:

ADDITIONAL INFORMATION

Deferred Compensation. The II-VI Incorporated Nonqualified Deferred Compensation Plan (the “Deferred Compensation Plan”) is designed to allow executive officers and certain employees of the Company to defer receipt of compensation into a trust fund for retirement or other qualified purposes. In addition, in connection with his promotion to Chief Executive Officer, Dr. Mattera receives an annual $100,000 employer contribution credited to the Deferred Compensation Plan. For a description of the Deferred Compensation Plan and more information regarding the amounts deferred under the Deferred Compensation Plan, see the “Nonqualified Deferred Compensation Table” and accompanying narrative.

Employees’ Profit Sharing Plan. The II-VI Incorporated Employees’ Profit Sharing Plan (the “Profit Sharing Plan”) covers certain Company employees who have met established tenure and service requirements. The Company makes a matching contribution to the Profit Sharing Plan based on the employee’s contributions to his or her 401(k) deferred savings and/or Roth 401(k) savings plan. In addition, the Company may make an additional discretionary performance-based contribution to the Profit Sharing Plan out of the Company’s operating profits, as determined by the Compensation Committee. Company contributions to NEO accounts under the Profit Sharing Plan are set forth in the “All Other Compensation” column of the Summary Compensation Table.

Change in Control. Existing equity awards vest on an accelerated basis in the event of death, disability or retirement. Performance-based awards vest pro rata of the months employed during the relevant performance period. In case of a change in control of the Company, if an award is assumed by the new company, and if the participant’s employment is involuntarily terminated, without cause or with good reason, within two years of the change in control, then the award will vest in full, with performance-based awards vesting at the greater of target or actual performance up to the change in control date. In all other circumstances involving a separation from the Company, unvested awards are forfeited. These acceleration provisions reflect market practices that appropriately value the employees’ contributions to the Company prior to the event triggering the accelerated vesting, and following a change in control, and help NEOs focus on delivering shareholder value without distractions.

We do not provide tax gross-ups on any excise taxes that may be triggered by change in control payments.

For additional information on payments on termination of employment or change in control, please refer to the “Potential Payments upon Change in Control and Employment Termination” section of this Proxy Statement.

Perquisites and Other Benefits. The Company generally does not provide perquisites or personal benefits to its NEOs. As Chief Executive Officer, Dr. Mattera is eligible for supplemental disability benefits.

Employment Agreements. Each of our officers has an employment agreement with the Company, terminable by either party on prior written notice. A summary description of these agreements is included beginning on page 39 of this Proxy Statement.

Tax Considerations. The Compensation Committee considers the impact that applicable tax laws may have with respect to executive compensation. In certain circumstances, applicable tax laws impose penalties on compensation, or may result in a loss of deduction to the Company for such compensation. Participation in, and compensation paid under, our plans, contracts and compensation arrangements may result in the deferral of compensation that is subject to the requirements of Section 409A (“Section 409A”) of the Internal Revenue Code of 1986 (the “Code”). While the Company intends for its plans, contracts and compensation arrangements to be structured and administered in a manner that complies with the requirements of Section 409A, to the extent that they fail to meet Section 409A, compensation earned under those arrangements may be subject to immediate taxation and tax penalties.

Section 162(m) of the Code limits the deductibility of compensation in excess of $1 million paid to any one NEO in any calendar year. Under the tax rules in effect before 2018, compensation that qualified as “performance-based” under Section 162(m) was deductible without regard to this $1 million limit. In 2017 and prior years, the Compensation Committee designed awards, including stock options and PSAs, that were intended to qualify for this performance-based compensation exception. However, the Tax Cuts and Jobs Act, which was signed into law December 22, 2017, eliminated this performance-based compensation exception effective January 1, 2018, subject to a special rule that “grandfathers” certain awards and arrangements that were in effect on or before November 2, 2017. As a result, compensation that the Compensation Committee structured in 2017 and prior years with the intent of qualifying as performance-based compensation under Section 162(m) that is paid on or after January 1, 2018 may not be fully deductible, depending on the application of the special grandfather rules. Moreover, from and after January 1, 2018, compensation awarded in excess of $1 million to our NEOs generally will not be deductible. While the Tax Cuts and Jobs Act will limit the deductibility of compensation paid to the NEOs, the Compensation Committee will, consistent with its past practice, design compensation programs that are intended to be in the best long-term interests of the Company and our shareholders, with deductibility of compensation being one of a variety of considerations taken into account.

COMPENSATION COMMITTEE REPORT

The Compensation Committee has:

The foregoing report of the Compensation Committee shall not be deemed to be “soliciting material” or to be “filed” with the SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that the Company specifically incorporates it by reference in such filing.

Compensation Committee

Shaker Sadasivam, Chair

Joseph J. Corasanti

Marc Y.E. Pelaez

SUMMARY COMPENSATION TABLE

The following table summarizes the compensation of the named executive officers for the fiscal years 2018, 2017 and 2016, discussed in this proxy document. All footnote references and explanatory statements relate to fiscal year 2018 unless otherwise noted.