Dear Graphic Packaging Holding Company Stockholders:

It is my pleasure to invite you to Graphic Packaging Holding Company’s 2026 Annual Meeting of Stockholders (the “Annual Meeting”), to be held virtually on Thursday, June 11, 2026 at 11:00 a.m. local time. Our Board of Directors believes that holding a virtual stockholder meeting facilitates attendance and offers significant time and cost savings to us and our stockholders and therefore has chosen this over an in-person meeting. To vote or submit questions during the Annual Meeting by live webcast, please visit www.virtualshareholdermeeting.com/GPK2026.

The formal Notice of Annual Meeting and Proxy Statement are enclosed with this letter. The Proxy Statement describes the matters to be acted upon at the Annual Meeting. It also describes how our Board of Directors operates and provides compensation and other information about the management and Board of Directors of Graphic Packaging Holding Company.

Whether or not you plan to join the Annual Meeting, your vote is important, and I hope you will vote as soon as possible. You may vote over the internet, by telephone or by mailing a proxy or voting instruction card. Voting over the internet, by telephone or by written proxy will ensure your representation at the Annual Meeting, regardless of whether you attend the virtual meeting. If you hold your shares in your own name and choose to attend the Annual Meeting, you may revoke your proxy and personally cast your votes at the Annual Meeting. If you are the beneficial owner of shares held in “street name” by a bank, brokerage firm or other nominee, please follow instructions from such record holder to vote your shares.

Sincerely yours,

Robbert E. Rietbroek

President and

Chief Executive Officer

Notice of 2026 Annual

Meeting of Stockholders

YOUR VOTE IS VERY IMPORTANT.

EVEN IF YOU PLAN TO ATTEND THE ANNUAL MEETING OF STOCKHOLDERS, PLEASE

AUTHORIZE YOUR PROXY OR DIRECT YOUR VOTE BY MAIL, INTERNET OR TELEPHONE AS

DESCRIBED ABOVE.

Table of Contents

Definition of Certain Terms or Abbreviations

Proxy Summary

This summary provides an overview of key information in this Proxy Statement. We encourage you to read the entire Proxy Statement before voting.

ANNUAL MEETING OF STOCKHOLDERS

VOTING MATTERS

CORPORATE GOVERNANCE HIGHLIGHTS

2025 BUSINESS HIGHLIGHTS

Proxy Statement

for the

Annual Meeting of Stockholders

on

June 11, 2026

General Information

ANNUAL MEETING AND VOTING INFORMATION

Outstanding Shares

Who May Vote

Only stockholders who held shares of the Company’s common stock at the close of business on the Record Date are entitled to notice of and to vote at the Annual Meeting or any adjournment thereof.

How Proxies Work

The Board of Directors is asking for your proxy. By giving the Board your proxy, your shares will be voted at the Annual Meeting in the manner you direct. If you return a signed proxy but do not specify how you wish to vote your shares, your shares will be voted “FOR” the election of each of the Director nominees, “FOR” the approval of the ratification of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm, “FOR” the proposal to approve the compensation paid to the Company’s named executive officers, “FOR” an amendment to the Company’s Certificate of Incorporation to declassify our Board, “FOR” an amendment to the Company’s Certificate of Incorporation to enable one or more stockholders as a group holding 25% of the Company’s Common Stock to call a special meeting of stockholders, and “AGAINST” the stockholder proposal. The proxyholders will vote shares according to their discretion on any other matter properly brought before the Annual Meeting.

If you are the beneficial owner of shares held in “street name” by a bank, brokerage firm or other nominee, such record holder of your shares, is required to vote your shares according to your instructions. To vote your shares, you will need to follow the directions your bank, brokerage firm or other nominee provides to you. Under the rules of the NYSE, if you do not give instructions to your bank, brokerage firm or other nominee, it will still be able to vote your shares with respect to certain “discretionary” items, but will not be allowed to vote your shares with respect to certain “non-discretionary” items. In the case of non-discretionary items, the shares will be treated as “broker non-votes.” Banks, brokerage firms and other nominees are allowed to exercise discretionary voting authority for beneficial owners who have not provided voting instructions only with respect to Proposal 2 set forth in this Proxy Statement and not with respect to any other proposal to be voted on at the Annual Meeting.

If for any reason any nominee for election as Director is unable or declines to serve as a Director, discretionary authority may be exercised by the proxyholders to vote for a substitute proposed by the Board.

General Information

How to Vote Your 401(k) Plan Shares

If you participate in the Company’s 401(k) Savings Plan or the Company’s Hourly 401(k) Savings Plan (the “401(k) Plans”), you may give voting instructions as to the number of share equivalents held in your account as of the Record Date to the trustee of the 401(k) Plans. You provide voting instructions to the trustee, Fidelity Management Trust Company, by completing and returning the proxy card accompanying this Proxy Statement. The trustee will vote your shares in accordance with your duly executed instructions if received by 11:59 p.m. Eastern Time on June 8, 2026. If you do not send instructions, the trustee will not vote the number of share equivalents credited to your account.

You may also revoke voting instructions previously given to the trustee by filing either a written notice of revocation or a properly completed and signed proxy card bearing a later date with the trustee no later than 11:59 p.m. Eastern Time on June 8, 2026. Your voting instructions will be kept confidential by the trustee.

Quorum

In order to carry out the business of the Annual Meeting, there must be a quorum. This means that at least a majority of the voting power of the outstanding shares entitled to vote must be present at the Annual Meeting, either by proxy or in person. Proxies received but marked as abstentions and broker non-votes will be included in the calculation of the number of votes present at the Annual Meeting for purposes of calculating whether a quorum is present.

Votes Needed

Under our By-Laws, directors are elected by a plurality of the votes cast, which means that the Director nominees receiving the largest number of votes cast are elected, up to the maximum number of Directors fixed by the Board to be elected at the Annual Meeting. As a result, any shares not voted, whether by abstention, broker non-vote or otherwise, have no effect on the election of Directors, except to the extent that the failure to vote for a particular nominee may result in another nominee receiving a larger number of votes.

However, under the Company’s Corporate Governance Guidelines, a nominee for director who receives a greater number of votes “withheld” than “for” is expected to tender his or her resignation to the Board promptly following certification of the election results. The Nominating and Corporate Governance Committee will consider any resignation tendered under this policy and recommend to the Board whether to accept or reject it. The Board will act on such resignation within 90 days following the certification of election results. A Director who tenders his or her resignation will not participate in the Nominating and Corporate Governance Committee’s recommendation or in the Board’s decision regarding whether to accept such resignation.

Changing Your Vote

General Information

Attending the Annual Meeting

Only stockholders and guests of the Company may attend the Annual Meeting, which will be held virtually. Stockholders of record can attend and participate in the Annual Meeting online, vote their shares electronically and submit questions during the Annual Meeting by visiting www.virtualshareholdermeeting.com/GPK2026. You will need the 16-digit control number on your Notice of Internet Availability of Proxy Materials or proxy card to access the Annual Meeting platform. Smart phone users can point their camera to the QR code provided in the Notice of Internet Availability of Proxy Materials and vote without entering a control number. If you do not have the control number, you may attend as a guest (non-stockholder) but will not have the ability to vote or ask questions during the Annual Meeting. If you are the beneficial owner of shares held in “street name” by a bank, brokerage firm or other nominee, and you wish to vote in person at the Annual Meeting, you must obtain a legal proxy from the holder of record of your shares and present it at the Annual Meeting.

Internet Availability of this Proxy Statement and Form 10-K

The Company’s Proxy Statement, 2025 Annual Report to Stockholders and 2025 Annual Report on Form 10-K are available on the Company’s website at https://investors.graphicpkg.com/company-information/annual-reports-proxy.

ANNUAL REPORT

The Company’s 2025 Annual Report accompanies this Proxy Statement. The Form 10-K for the fiscal year ended December 31, 2025 for GPHC is included in the Annual Report and is available without charge upon written request addressed to Graphic Packaging Holding Company, Investor Relations, 1500 Riveredge Parkway, Atlanta, Georgia 30328. The Company will also furnish any exhibit to the Form 10-K for the fiscal year ended December 31, 2025, if specifically requested.

Corporate Governance Matters

INFORMATION REGARDING THE BOARD OF DIRECTORS

Members, Standing Committees and Meetings of the Board of Directors

The table below shows the members and chairs of the Board of Directors and each standing committee of the Board as of December 31, 2025, the tenure and independence status of each Board member, the Audit Committee Financial Expert status of the members of the Audit Committee and the number of Board and committee meetings held during 2025.

● Member     C Chair    ^#Non-Independent; resigned from the Board effective January 1, 2026    * Financial Expert

† Elected to the Board on May 21, 2025

Corporate Governance Matters

Applying these standards, the Board of Directors determined that all of the Company’s Directors who served in 2025 were independent except Mr. Doss. Mr. Doss was not considered independent because he served as an executive officer of the Company through December 31, 2025.

Corporate Governance Matters

the review and approval or ratification (if appropriate) of transactions with related parties; and

Corporate Governance Matters

Corporate Governance Matters

BOARD AND COMMITTEE OVERSIGHT OF RISK MANAGEMENT

Corporate Governance Matters

OVERSIGHT OF SUSTAINABILITY MATTERS

Sustainability matters inform the Company’s decisions on how we operate and grow, protect the environment and support employees. In recognition of the importance of sustainability matters to the Company, a two-tiered level of oversight provides the best structure to integrate consideration of sustainability risks and opportunities into short- and long-term business strategy to meet the changing demands of the Company’s stakeholders, including stockholders, customers, employees and communities. The Board of Directors is responsible for the oversight of sustainability strategy, governance standards, goals and performance and has assigned principal oversight of sustainability policy and practices to the Nominating and Corporate Governance Committee.

The Nominating and Corporate Governance Committee considers current and emerging social and environmental trends, as well as major legislative and regulatory developments and other public policy issues that may impact the Company’s business operations or stakeholders. The Committee also reviews the Company’s policy and practices for consistency with its sustainability commitment goals, performance metrics, and public reporting and makes recommendations to the Board and senior management. In addition, oversight of governance matters such as enterprise risk management and cybersecurity risk, as well as oversight of controls and procedures related to reporting sustainability data, are assigned to the Audit Committee, while oversight of a range of human capital and social matters related to the effective recruitment, development and retention of talent necessary to support the long-term success of the Company is the responsibility of the Compensation and Management Development Committee.

With Board oversight, senior management drives progress towards further embedding sustainability considerations into business and manufacturing processes, achieving the Company’s sustainability goals, and working to continuously improve sustainability practices. Senior management regularly updates the Board and Nominating and Corporate Governance Committee on progress and potential environmental, social, and economic risks and opportunities.

In July 2025, the Company published its 2024 Impact Report, and in early 2026, published its first climate risk report, both of which are available on the Company’s website at www.graphicpkg.com/sustainability/sustainability-reporting. In addition, the Company reaffirmed its commitment as a participant in the UN Global Impact and was recognized for the fourth year in a row by Fortune as one of the World’s Most Admired Companies.

COMPANY CULTURE AND ENGAGEMENT INITIATIVES

Graphic Packaging works to enable a safe, engaged, and customer-focused culture, and has a solid record of delivering outstanding results for its customers across the globe. As a leading innovator in consumer packaging, a deep understanding of the widest range of consumers is essential to the success of our designs and product execution for our customers. As such, the Company seeks to recruit and retain talented employees whose perspectives and experience are broadly representative of the consumers our customers serve.

Similarly, strong relationships with the communities in which the Company operates have a substantial impact on hiring costs, retention rates, employee engagement, operating performance and safety. The Company therefore seeks to build and maintain strong and capable teams broadly representative of those communities. The Company believes that its recent safety performance is among the best in the industry, and considers employee engagement to be critical to maintaining and improving upon that level of safety performance.

The Compensation and Management Development Committee of our Board of Directors annually reviews the processes and practices related to talent and engagement to ensure the equitable treatment of all employees, and alignment with the Company’s strategic objectives.

Our employees play a crucial role as well, and we rely on their insights and feedback to assess our culture and identify areas for improvement. In 2025, we conducted a global employee engagement survey in partnership with Gallup, resulting in 82% of our employees sharing their voice – a significant increase in participation compared to the previous year. The results of this survey were shared with our entire employee population, and action plans have been created at the local level in facilities around the globe to identify and execute opportunities to enhance the employee experience. The Company has a number of initiatives underway to drive employee engagement higher.

Corporate Governance Matters

CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

The Board recognizes that Related Party Transactions (as defined below) can present potential or actual conflicts of interest and create the appearance that Company decisions are based on considerations other than the best interests of the Company and its stockholders. In March 2007, the Board of Graphic Packaging Corporation (the publicly-traded predecessor to the Company, “GPC”) delegated authority to the Audit Committee to review and approve Related Party Transactions, and the Audit Committee has adopted a Policy Regarding Related Party Transactions.

The Policy Regarding Related Party Transactions defines a “Related Party Transaction” as any transaction, arrangement or relationship (including any indebtedness or guarantee of indebtedness) in which (a) the aggregate amount involved will or may be expected to exceed $120,000 in any fiscal year, (b) the Company is a participant, and (c) any Related Party (as defined below) has or will have a direct or indirect interest, other than an interest that arises solely as a result of being a director or beneficial owner of less than 10% of another entity. The policy defines a “Related Party” as any (a) person who is or was since the beginning of the last fiscal year an executive officer, director or nominee for election as a director of the Company, (b) any beneficial owner of more than 5% of the Company’s common stock, (c) an immediate family member of any of the foregoing, or (d) any firm, corporation or other entity in which any of the foregoing is employed, is a principal or serves in a similar position, or has a beneficial ownership of more than 5%.

The Policy Regarding Related Party Transactions provides that the Audit Committee shall review all of the material facts and circumstances of all Related Party Transactions and either approve, ratify or disapprove of the entry into the Related Party Transaction. In determining whether to approve a Related Party Transaction, the Audit Committee will take into account, among other factors it deems appropriate, whether the Related Party Transaction is on terms no less favorable than terms generally available to an unaffiliated third-party under the same or similar circumstances, the benefits to the Company, the extent of the Related Party’s interest in the transaction, and if the Related Party is a director or a nominee for director, the impact on such director’s independence. The policy provides that certain Related Party Transactions, including certain charitable contributions, transactions involving competitive bids and transactions in which all stockholders receive proportional benefits, are pre-approved and do not require an individual review by the Audit Committee. You may find a copy of the Policy Regarding Related Party Transactions on the Company’s website at www.graphicpkg.com/corporate-governance/governance-documents.

GOVERNANCE DOCUMENTS

The Company will provide printed copies of the charters of the Audit Committee, Compensation and Management Development Committee and Nominating and Corporate Governance Committee, as well as the Policy Regarding Related Party Transactions, the Code of Business Conduct and Ethics and the Corporate Governance Guidelines to any person without charge upon request.

Proposal 1 — Election of Directors

The Company’s Board of Directors currently has ten members divided into three classes, with one class being elected each year for a three-year term. The three nominees standing for election as Class I Directors are: Mr. Callahan, Mr. Stafeil and Mr. Venturelli.

If elected, each Class I nominee will serve three consecutive years with the term expiring in 2029 and until a successor is elected and qualified. The election of the Director nominees is by plurality vote, which means that the three nominees receiving the largest number of votes cast will be elected. Under the Company’s Corporate Governance Guidelines, any nominee who receives a greater number of votes “withheld” than “for” votes in an uncontested election is expected to tender to the Board his or her resignation as a Director promptly following certification of the election results. The Nominating and Corporate Governance Committee will then consider such resignation and recommend to the Board whether to accept or reject it and the Board will act on such resignation within 90 days following the certification of election results.

If at the time of the Annual Meeting, any of the nominees identified above is unable or unwilling to serve as a Director for any reason, which is not expected to occur, the persons named as proxies will vote for such substitute nominee or nominees, if any, as shall be designated by the Board.

Set forth below is certain information regarding the Director nominees and each of the incumbent Directors whose term will continue after the Annual Meeting, including the particular experience, qualifications and skills that led the Board to conclude that the Director nominee or incumbent Director is qualified to serve as a Director of the Company. There are no family relationships among any Directors or executive officers of the Company.

INFORMATION CONCERNING THE NOMINEES

Class I Directors — Terms to Expire in 2029

Proposal 1 — Election of Directors

Proposal 1 — Election of Directors

INFORMATION REGARDING CONTINUING DIRECTORS

Class II Directors — Terms to Expire in 2027

Proposal 1 — Election of Directors

Proposal 1 — Election of Directors

Class III Directors — Terms to Expire in 2028

Proposal 1 — Election of Directors

CRITERIA FOR POTENTIAL DIRECTORS

The Company’s Board is responsible for selecting nominees for election as Directors by stockholders and for filling vacancies on the Board. The Nominating and Corporate Governance Committee is responsible for identifying and recommending to the Board individuals for nomination as members of the Board and its committees and, in this regard, reviewing with the Board on an annual basis the current skills, background and expertise of the members of the Board, as well as the Company’s future and ongoing needs. This assessment is used to establish criteria for identifying and evaluating potential candidates for the Board. However, as a general matter, the Nominating and Corporate Governance Committee seeks individuals with significant and relevant business experience who demonstrate:

The Nominating and Corporate Governance Committee regularly assesses the skills, background and expertise of the members of the Board and identifies the Company’s needs. As part of this process, the Nominating and Corporate Governance Committee strives to select nominees with relevant business experience, the personal characteristics described above and a wide variety of skills and perspectives informed by different cultural and life experiences. The following table highlights certain experiences, skills and knowledge held by each of our continuing Directors and Nominees that are relevant to the Company’s business. The table reflects information provided by each of our Directors in their responses to our annual Director’s Questionnaire. The table is a summary and is not intended to be a complete list of each Director’s or Nominee’s skills or contributions to the Board. No one experience, skill or attribute is dispositive in the Board’s decision to nominate or re-nominate an individual to our Board of Directors.

Proposal 1 — Election of Directors

DIRECTORS’ SKILLS MATRIX

Proposal 1 — Election of Directors

The Nominating and Corporate Governance Committee also recognizes the importance of selecting directors from a range of backgrounds and professions to provide the Board a wealth of experiences and perspectives to inform its decisions and enhance its cognitive diversity. Consistent with this philosophy, the Nominating and Corporate Governance Committee evaluates the ability of a potential director to contribute to the Board by leveraging a broad range of experiences, as well as the potential director’s ethnic, gender, generational and racial diversity. Currently, the Board has two female directors and one ethnically diverse director.

The Nominating and Corporate Governance Committee considers candidates recommended by its members and other Directors, as well as those identified by a third-party search firm retained to assist in identifying candidates. The Nominating and Corporate Governance Committee will also consider whether to nominate any person recommended by a stockholder pursuant to the provisions of the Company’s By-Laws relating to stockholder nominations as described in “Stockholder Proposals and Nominations” below. The Nominating and Corporate Governance Committee uses the same criteria to evaluate proposed nominees that are recommended by Directors or a search firm as it does for stockholder-recommended nominees.

BOARD RECOMMENDATION

The Board believes that voting for each of the three nominees for Director selected by the Board is in the best interests of the Company and its stockholders. The Board recommends a vote “FOR” each of the three nominees for Director.

COMPENSATION OF DIRECTORS

Annually, WTW benchmarks the amount and type of compensation paid to the Company’s non-employee Directors against that paid by other companies in the Industry Specific Peer Group used for comparing executive officer compensation (as described in “Compensation Discussion and Analysis—Peer Group and Market Data”), as well as against a large published survey of non-employee director compensation across a wide range of industries and company sizes. The goal is to set non-management Director compensation at roughly the mid-point of compensation paid by companies of similar size in similar industries. The Nominating and Corporate Governance Committee reviews the benchmarking materials and approves and recommends all non-management Director compensation changes for approval by the full Board of Directors.

The following table sets forth information regarding the compensation of the non-employee Directors of the Company who served in 2025.

Director Compensation

Proposal 1 — Election of Directors

Cash retainers and fees are payable in quarterly installments. The annual equity grant is payable in May of each year in shares of the Company’s common stock with a value of approximately $160,000 on the date of grant. The Company does not pay Board or committee meeting fees, but does reimburse all Directors for reasonable and necessary expenses they incur in performing their duties as Directors.

In July 2020, the Board of Directors approved a non-qualified deferred compensation plan for Directors (the “Directors NQDCP”) that allows the Directors to defer receipt and taxation of their annual compensation commencing in 2021. The Directors NQDCP has the same investment fund choices as the Company’s non-qualified deferred compensation plan for senior employees but also allows the Directors to defer their cash and equity compensation into a Company stock fund. Messrs. Aghili, Hagemann, Scarborough and Ms. Wentworth participated in the Directors NQDCP during 2025.

Audit Matters

REPORT OF THE AUDIT COMMITTEE

This report by the Audit Committee is required by the rules of the SEC. It is not to be deemed incorporated by reference by any general statement that incorporates by reference this Proxy Statement into any filing under the Securities Act or the Exchange Act, and it is not to be otherwise deemed filed under either such Act.

The Audit Committee is currently comprised of three members, each of whom is an “independent director,” as defined by Section 303A of the NYSE Listed Company Manual. Each of the members of the Audit Committee is financially literate and qualifies as an “audit committee financial expert” under federal securities laws. The Audit Committee’s purposes are to assist the Board in overseeing: (a) the quality and integrity of our financial statements; (b) the qualifications and independence of our independent auditors; and (c) the performance of our internal audit function and independent auditors.

In carrying out its responsibilities, the Audit Committee has:

Based on the review and discussions noted above and our independent auditors’ report to the Audit Committee, the Audit Committee recommended to the Board of Directors that our audited financial statements be included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025.

Larry M. Venturelli (Chair)

Robert A. Hagemann

Alessandro Maselli

AUDIT FEES

Aggregate fees billed to us for the fiscal year ended December 31, 2025 and for the fiscal year ended December 31, 2024 by PricewaterhouseCoopers LLP are as follows:

Audit Fees. This category includes the aggregate fees billed for professional services rendered for the audit of our consolidated financial statements and internal control over financial reporting for the fiscal years ended December 31, 2025 and December 31, 2024, for the reviews of the financial statements included in our Quarterly Reports on Form 10-Q during 2025 and 2024, and for services that are normally provided by the independent auditors in connection with statutory and regulatory filings or engagements for the relevant fiscal years.

Audit-Related Fees. This category includes the aggregate fees billed in each of the last two fiscal years for assurance and related services by the independent auditors that are reasonably related to the performance of the audits or reviews of the financial statements and are not reported above under “Audit Fees,” and generally consist of fees for accounting consultations, audits of employee benefit plans and attest services that are not required by statute or regulation.

Audit Matters

Tax Fees. This category includes the aggregate fees billed in each of the last two fiscal years for professional services rendered by the independent auditors for tax compliance, tax planning and tax advice.

All Other Fees. This category includes the aggregate fees billed in each of the last two fiscal years for products and services provided by the independent auditors that are not reported above under “Audit Fees,” “Audit-Related Fees,” or “Tax Fees.”

The Audit Committee reviews and pre-approves audit and non-audit services performed by the Company’s independent auditors as well as the fees charged for such services. The Audit Committee has considered whether the provision of non-audit services by PricewaterhouseCoopers LLP was compatible with maintaining the firm’s independence. The Audit Committee may delegate pre-approval authority for such services to one or more members, whose decisions are then presented to the full Audit Committee at its scheduled meetings. In 2025 and 2024, all of the audit and non-audit services provided by our independent auditors were pre-approved by the Audit Committee in accordance with the Audit Committee Charter.

Proposal 2 — Ratification of the Appointment of our Independent Registered Public Accounting Firm

The Audit Committee of the Board of Directors has evaluated the qualifications, performance and independence of PricewaterhouseCoopers LLP and has appointed PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026. Although the Company is not required to submit the appointment of its independent registered public accounting firm to the stockholders for ratification, the Board of Directors believes that it is important to do so as a matter of good corporate governance. This proposal asks you to ratify this selection. Representatives of PricewaterhouseCoopers LLP are expected to be present at the Annual Meeting and will have the opportunity to make a statement if they desire to do so. In addition, they will be available to respond to appropriate questions from stockholders.

Pursuant to its charter, the Audit Committee has sole and direct responsibility for the appointment, compensation, retention and oversight of the work of the independent registered public accounting firm engaged by the Company. The Audit Committee will consider the results of the stockholder vote on ratification, but will exercise its judgment, consistent with its responsibilities under its charter, with respect to the appointment and retention of the Company’s independent registered public accounting firm.

BOARD RECOMMENDATION

The Board of Directors recommends a vote “FOR” ratification of the appointment of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm.

Compensation Matters

COMPENSATION AND MANAGEMENT DEVELOPMENT COMMITTEE REPORT

The members of GPHC’s Compensation and Management Development Committee listed below reviewed and discussed the following Compensation Discussion and Analysis with management of the Company. Based on such review and discussion, the Compensation and Management Development Committee recommended to the Board of Directors that the Compensation Discussion and Analysis be included in this Proxy Statement and incorporated by reference into the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

Compensation and Management Development

Committee

Lynn A. Wentworth, Chair

Aziz Aghili

Laurie Brlas

Andrew P. Callahan

COMPENSATION DISCUSSION AND ANALYSIS

This Compensation Discussion and Analysis section (“CD&A”) describes the Company’s compensation principles, policies and practices, as well as the specific factors considered by the Compensation and Management Development Committee (referred to in this CD&A as the “Committee”) in making compensation decisions. This CD&A focuses on the compensation of our NEOs or our “Executives”, who are set forth in the first table below and included in the Summary Compensation Table and other tables in this Proxy Statement.

CD&A At-a-Glance

Named Executive Officers:

Compensation Philosophy:

Target Total Direct Compensation for NEOs: Approximate Median of Peer Group Similar Officers

Compensation Matters

Compensation Components:

Compensation Matters

Compensation Design and Market Positioning

The Company’s compensation programs are designed to attract, retain, motivate and reward the Executives responsible for leading the business in a manner that directly aligns the Executives’ interests with those of the Company’s stockholders. To accomplish these objectives, the Committee sets each of the primary components of the Company’s executive compensation program (base salary, short-term cash incentive and long-term equity-based incentives) at a market-competitive rate, which is determined by reference to the approximate median of the relevant peer group (the Industry Specific Peer Group for the CEO and CFO, and the Survey Peer Group for the other NEOs, each as identified below), resulting in each Executive’s total compensation opportunity being set at approximately the median of the relevant peer group’s total pay for executives with similar positions and responsibilities. The Committee does not employ a mechanical process based on external compensation data, however, as other considerations such as time in position, role, individual performance and succession within the Company are considered. As data for the relevant peer group fluctuates or the peer group members are updated to reflect changes in the market, the Committee may make adjustments in one or more components of compensation to more closely align with market. The Committee and, with respect to the President and CEO, the Board of Directors, have full discretion to choose the elements of executive compensation that the Executives will be paid or will be eligible to earn each year and to adjust the proportion of total compensation opportunity that each element provides. Company performance, market data, individual performance, executive succession, hiring and retention needs and internal equity among our Executives’ compensation packages have been the primary factors considered in decisions to change compensation materially.

Peer Groups and Market Data

Annually we obtain an analysis of compensation market data to assist in setting pay opportunities for our Executives for the following year. Compensation of the Executives is compared to the pay opportunities provided to executives holding comparable positions at companies with which we compete for business and for talent. The companies used for this comparison are recommended by the Company and the Committee’s compensation consultant and approved by the Committee. An industry-specific peer group is used for the CEO and CFO, and a broader survey peer group is used for other Executives. Both peer groups are reviewed annually and updated, if necessary, to ensure their appropriateness given any market changes. The companies comprising the peer groups used to develop 2025 executive compensation are listed below. After reviewing the companies in the prior year’s comparator groups against the criteria historically used to determine appropriate peers, the Committee determined that no changes to the peer groups were warranted, other than the removal of WestRock Company as a result of its acquisition by Smurfit Kappa in mid-2024.

Compensation Matters

Compensation Matters

Pay and Performance

Although target compensation for each of our Executives is established at the beginning of each year with reference to the approximate median of the relevant peer group, each Executive’s actual compensation each year may be above or below the target level based on individual, business unit and overall Company performance, as well as changes in the price of the Company’s common stock. The Committee believes that the Company’s compensation program has been successful in aligning pay levels with the performance of the Company over time. The chart below illustrates the relationship between the total compensation of the CEO and the aggregate compensation of the other NEOs (as set forth in the Summary Compensation Table but excluding changes in pension value) and the Company’s Adjusted EBITDA. Adjusted EBITDA is used by the Company as a performance measure for both the MIP and the long-term incentive program because it measures the operational effectiveness of the whole organization while adjusting out charges or credits that are unrelated to core operations. To improve comparability, compensation earned by Ms. Bidlingmaier, our former Executive Vice President and President, Americas, who resigned effective June 2, 2025, and Mr. Lischer, who was appointed as our Interim CFO effective November 7, 2025, has been removed from the aggregate compensation of the other NEOs to result in the aggregate compensation of the remaining four NEOs other than the CEO (each of whom served in their respective positions with the Company for the entirety of 2025, other than Mr. Scherger, who served until November 7, 2025).

CEO and Other NEO Compensation v. Adjusted EBITDA Performance

Compensation Matters

Key Compensation Practices

Below are certain of the Company’s executive compensation practices that we believe are instrumental in achieving the Company’s compensation goals while mitigating risk and maintaining sound compensation practices.

Role of our Stockholders

Our stockholders play an important advisory role in determining the appropriateness of the compensation paid to our Executives. At the Annual Meeting of Stockholders on May 21, 2025, 96% of the shares represented and entitled to vote at the Annual Meeting were voted to approve the compensation of the Company’s Named Executive Officers, as discussed and disclosed in the 2025 Proxy Statement. After considering the results of this advisory vote on executive compensation, as well as the advisory votes in 2024 and 2023 that were each approved by over 90%, the Committee concluded that the compensation paid to our Named Executive Officers and the Company’s overall pay practices enjoy strong stockholder support. Going forward, future advisory votes on executive compensation, including the vote on the executive compensation described in this Proxy Statement will serve as an additional tool to guide the Board and the Committee in evaluating the alignment of the Company’s executive compensation program with the interests of the Company and its stockholders.

Note that at the Annual Meeting of Stockholders on May 24, 2023, our stockholders expressed a preference that advisory votes on executive compensation occur every year. Consistent with this preference, the Company is maintaining its practice of an advisory vote on executive compensation once every year. The next required vote on the frequency of stockholder votes on executive compensation will occur at the 2029 Annual Meeting of Stockholders.

Compensation Matters

Role of the Compensation and Management Development Committee

The Committee is responsible for establishing the Company’s general compensation philosophy and working with management to develop all compensation programs, including the equity compensation programs in which the executive officers participate. The Committee works to ensure that the Company’s practices, policies and programs, including its integrated talent management process and its Company Culture and Engagement Initiatives, link pay to performance, encourage an appropriate degree of risk-taking, are consistent with the Company’s objectives of attracting, retaining, rewarding and motivating key employees, and align the interests of key employees with those of stockholders. The Committee’s annual process for determining the compensation of each NEO is depicted below.

Compensation Process

Compensation Matters

In addition to setting compensation levels, the Committee annually reviews the Company’s compensation programs and assesses whether any risks arising from such practices, policies and programs are reasonably likely to have a material adverse effect on the Company. The Committee also reviews, evaluates and approves the Company’s health and welfare plan offerings and the Company’s retirement plans to ensure their alignment with the market, effectiveness in attracting and retaining talent and cost effectiveness. The Committee is also responsible for reviewing the Company’s culture programs and integrated talent management processes to assess the success of these programs in facilitating the Company’s short-and long-term objectives. The Committee directs the annual succession planning process for executive officers and facilitates the Board’s review and approval of the President and CEO’s succession plan. The Committee also annually reviews compliance with executive shareholding requirements and monitors any application of the Company’s clawback policy.

Role of Compensation Consultants

The Committee retained WTW to act as the Committee’s independent consultant on executive compensation and benefits throughout 2025. The mandate of the compensation consultant is to work for the Committee in its review of executive compensation practices and programs, including assessing the overall competitiveness of pay levels and program design, and providing updates on market trends and technical considerations. The Committee instructed the compensation consultant to compile and provide data on both total pay and individual elements of compensation among companies in the peer groups, as well as trends in compensation practices that they observed within the peer groups and generally among public companies. The Committee does not rely on the compensation consultant to recommend specific levels of total pay or any specific element of compensation to our Executives (other than the CEO for whom they make a recommendation); such recommendations are developed by management based on information provided by the compensation consultant and then presented to the Committee for consideration. Representatives of WTW attended each of the four Committee meetings in 2025 at the Committee’s request and were available to provide information to the Committee as questions and issues arose. The Committee completes an assessment of the compensation consultant annually. The Committee determined that the compensation consultant is independent after consideration of the SEC’s independence factors.

Role of Executive Officers

The President and CEO and Executive Vice President, Human Resources use the compensation consultant’s executive benchmarking data to make recommendations for base pay, MIP targets and LTIP targets for the Executives (other than the President and CEO). The Committee works with the compensation consultant to propose the compensation design and award amounts for the President and CEO to the Board of Directors.

Overview of Executive Compensation Components

The Committee evaluates the alignment between compensation philosophy, plan design and achievement of short and long-term results to determine the components of our Executives’ compensation program. The Committee structures the majority of compensation to Executives as performance-based compensation. The Company’s 2025 executive compensation program consisted of the compensation components set forth in the table below.

Compensation Matters

Compensation Components

Compensation Matters

Each of these elements is discussed further below, as well as the methodology used for setting the amount of each type of compensation.

Base Salary

Short-Term Cash Incentive

The Company’s short-term cash incentive opportunity under the MIP rewards the achievement of specified annual financial goals. For 2025, the financial measures used to set such financial goals were 2025 Adjusted EBITDA and 2025 Cash Flow Before Debt Reduction, each weighted 50% in the calculation. The Committee chose these financial metrics because they are well understood objective targets and have a direct link to the Company’s annual business plan. The degree to which MIP pays out varies both up and down based on business performance (up to a maximum of 200% of target), as reflected in the following chart.

2025 MIP Performance Goals

Compensation Matters

Short-Term Cash Incentive Payouts for 2025. Cash incentive payouts under the MIP for the Executives are shown in the Non-Equity Incentive Plan Compensation column of the Summary Compensation Table. The Company’s performance with respect to its 2025 Adjusted EBITDA performance goal was 78% of target and with respect to its 2025 Cash Flow Before Debt Reduction performance goal was 74% of target, resulting in no MIP payout for 2025.

For more information on the 2025 annual incentive opportunities for the Executives, refer to the “Grants of Plan-Based Awards” table in this Proxy Statement. The column titled “Estimated Future Payouts Under Non-Equity Incentive Plan Awards” provides the estimated payouts for the Executives at threshold, target and maximum performance levels for 2025.

Long-Term Incentives

The Committee has designed the long-term equity incentive program to be consistent with its desire to tie a larger percentage of the Executives’ total compensation to Company performance. Accordingly, one-third of the total long-term incentive value is granted in Service RSUs and two-thirds is granted in Performance RSUs. Both Service RSU and Performance RSU grants are intended to retain Executives during a multi-year vesting period and promote equity ownership.

Performance RSUs granted under the long-term incentive program generally vest in full on the third anniversary of the grant date (assuming the Executive has continued in his or her employment by the Company through such date). Service RSUs granted in 2025 vest in three approximately equal tranches on the first, second and third anniversaries of the grant date. Upon death, disability, or involuntary termination without cause, a proportion of the RSUs vests. Upon retirement (as defined in the grant agreement), all of the RSUs vest if the participant continued in the employment of the Company through December 31st of the year in which the grant occurred and subsequently retired and the participant provided written notice to the Company of his or her retirement at least six (6) months prior to the date of termination of employment due to retirement. If the participant is a Vice President or above and did not provide written notice to the Company of his or her decision to retire at least six (6) months prior to the termination of employment due to retirement, then only a portion of the RSUs vest. In the event of an Involuntary Termination or Termination for Good Reason within one year following the date of a change of control (as defined in the Graphic Packaging Holding Company 2024 Omnibus Incentive Compensation Plan (the “2024 Plan”)), all Service RSUs and earned Performance RSUs vest in full. The number of Performance RSUs considered earned in the event of a change of control is determined based on assumed target performance for the performance period.

Compensation Matters

Payout of 2022 Grants. In February 2025, the Committee approved the payout of the Performance RSUs granted in 2022 at 200% of target, based on the achievement of the performance goals for the three-year performance period shown below, as adjusted by the relative total shareholder return modifier.

2022 Long-Term Incentive Program Performance Goals

The Company achieved 3-Year Aggregate 2022 Adjusted EBITDA of $5,158 million (112.8% of target) resulting in a payout of this component at 200%, 3-Year Average 2022 Return on Invested Capital of 14.14% (115.1% of target) resulting in a payout of this component at 200%, and 3-year Organic Revenue Growth of 5.5% resulting in a payout of this component at 182%. Overall performance of these performance measures resulted in a combined payout at 196% of target prior to application of the TSR modifier. The Company’s performance with respect to TSR was at the 96.6 percentile, which resulted in a 120% payout modifier. Applying the TSR modifier to the Company’s 196.4% performance under the performance measures, the payout was 200% of target.

2025 Grants. In February 2025, the Company granted both Service RSUs and Performance RSUs to each Executive, under the long-term incentive program. For Executives, other than Mr. Lischer, the total number of RSUs granted was set based on a value delivered as a percentage-of-salary formula, with the percentage established based on a review of responsibilities, market data and internal equity considerations. Mr. Lischer’s grant was based on an annual target amount of $550,000. The value determined by the percentage of salary, or in Mr. Lischer’s case, the target amount, was then converted to the total number of RSUs by dividing the value by the average stock price of the Company’s common stock during January 2025. One-third of the total number of RSUs was granted as Service RSUs and two-thirds was granted as Performance RSUs. The target value of RSUs granted under the long-term incentive program (as a percentage of salary) during 2024 and 2025 for each of our Executives is set forth below: