PROXY STATEMENT SUMMARY

Below are the highlights of important information you will find in this Proxy Statement. As this is only a summary, we request you please review the full Proxy Statement before casting your vote.

PROXY STATEMENT SUMMARY (CONTINUED)

Business Highlights and Achievements

In March 2025 we launched our “Focused Transformation” program to establish a culture of accountability, create clear strategies to improve profitability, control costs by committing to deliver annualized cost savings of $20 million by year-end 2025, and invest in growth while returning cash to shareholders.

In making meaningful progress toward these four goals, 2025 was an inflection point for Myers Industries.

First, we aligned our incentive plans to drive business unit performance and create accountability across the organization. Second, as a result of a strategic review, we made the significant decision to sell Myers Tire Supply. Further, we idled two of our nine rotational molding facilities to improve utilization. By year end, we delivered our annualized cost savings of $20 million, primarily in SG&A, by reducing expenses while also optimizing organizational efficiency. Finally, through 2025, we balanced investing in growth with returning $23 million in cash to shareholders through dividends and opportunistic share repurchases.

On March 5, 2026, we announced our financial results for the full year ended December 31, 2025, including the following full-year highlights compared to our prior year's results:

Full Year 2025 Financial Highlights vs. Prior Year

The Company uses certain non-GAAP measures in this proxy statement. Adjusted operating income, adjusted earnings per share, and adjusted EBITDA are non-GAAP financial measures and are intended to serve as a supplement to results provided in accordance with accounting principles generally accepted in the United States. Myers believes that such information provides an additional measurement and consistent historical comparison of the Company’s performance. A reconciliation of the non-GAAP financial measures to the most directly comparable GAAP measures is available in Appendix A to this proxy statement.

Myers extends its deep gratitude to William Foley and Jeff Kramer for their dedicated service as Myers directors. Messrs. Foley and Kramer will be retiring from their service as directors at the expiration of their current terms at the 2026 Annual Meeting of Shareholders. Mr. Foley has served as a director since 2011 and Mr. Kramer has served as a director since 2021.

PROXY STATEMENT SUMMARY (CONTINUED)

Board Overview

Myers has an experienced and effective Board focused on shareholder value creation. The Board is proposed to be comprised of 8 members, all of whom are independent other than Mr. Schapper. The charts below highlight the nominated Board’s composition and experience.

Composition

Qualifications

PROXY STATEMENT SUMMARY (CONTINUED)

Shareholder Engagement

One of our key priorities is conducting robust engagement with our shareholders in order to provide transparency into our business and determine which issues are important to our shareholders. Participants in our engagement programs include executive management, members of the Board and Investor Relations personnel. Our methods of engagement include:

Engagement Highlights

We continue to evolve our corporate governance practices and our regular outreach and engagement with our investors. Shareholder feedback is an essential component of our corporate governance practices and helps to drive increased transparency, accountability and, ultimately, more active, engaged and effective corporate oversight. In 2025, we reached out to our top 30 shareholders, representing more than 70% of shares owned, and we engaged with nine of those shareholders, with discussions including the following areas:

The Company values the input received from these discussions with shareholders. Following these conversations, the Company has continued to emphasize the importance of safety in our operations and has continued its focus on enhancing sustainable business practices throughout our operations. Additionally, the Compensation and Management Development Committee of the Company (“CMD Committee”) regularly evaluates the Company’s compensation programs and considers shareholder input as part of their evaluation.

At any time during the year, shareholders may access our Annual Report, Proxy Statement, financial presentations, and corporate governance guidelines at www.myersindustries.com.

Shareholder Communications

Shareholders may contact any director, committee of the Board, non-management director or the Board through the following:

via U.S. Mail at:

c/o Secretary

Myers Industries, Inc.

1293 South Main Street

Akron, Ohio 44301

via e-mail at:

governance@myersind.com

A toll-free hotline has also been established if an interested party wishes to contact a director, a committee of the Board, a non-management director or the Board by phone. The number is (877) 285-4145 and is available worldwide 24 hours a day, seven days a week.

PROXY STATEMENT SUMMARY (CONTINUED)

PROXY STATEMENT SUMMARY (CONTINUED)

2025 CEO and CFO Target Compensation Mix(1)

Corporate Governance and Compensation Practices and Policies

The Board is committed to maintaining sound corporate governance and a compensation structure that promotes the best interests of our shareholders.

Corporate Governance Guidelines

The Company has adopted “Corporate Governance Guidelines” and a “Code of Business Conduct and Ethics” for the Company’s directors, officers and employees. Each of our corporate governance policies is available on the “Corporate Governance” page accessed from the “Investor Relations” page of our website at www.myersindustries.com.

Corporate Governance and Compensation Practices

Shareholder Outreach

Myers continues to strengthen our corporate governance practices, including regular outreach and engagement with our investors. Shareholder feedback is an essential component of our corporate governance practices and helps to drive increased transparency, accountability and, ultimately, more active, engaged and effective corporate oversight. As part of this shareholder outreach, Myers contacted our top 30 shareholders, representing more than 70% of shares owned. Myers also attended two investor conferences and two non-deal roadshows, presenting the Myers story to current and potential shareholders. Additionally, we met with multiple different interested investors who currently do not hold a Myers position, converting at least four of these potential investors into a Myers shareholder. Along with a Company and financial overview, topics in these meetings included discussions on Board governance and oversight of strategy, executive compensation, capital allocation priorities, end market trends and growth strategies, sustainability, and Board composition and continuing education.

Annual Elections

In accordance with best governance practices, all of our directors are elected annually.

Independent Board Chair

Board and Committee Independence

In connection with the Board’s determination regarding the independence of each non-management director and nominee, the Board considered any transactions, relationships and arrangements as required by our independence guidelines.

Proxy Access

Section 13 of Article I of our Amended and Restated Regulations ("Regulations") includes proxy access provisions for certain shareholder nominations of directors. The provision provides proxy access for certain director nominations (i) of up to the greater of two persons or 20% of the number of directors on our current Board, (ii) by a shareholder or by a group of not more than 20 shareholders, (iii) owning at least three percent of the outstanding shares of common stock of the Company continuously for at least three years, (iv) pursuant to notice received no earlier than 120 days and no later than 90 days before the anniversary of the previous year’s Annual Meeting of Shareholders, and (v) containing information required by Section 13 of our Regulations.

Over-Boarding Policy

The Company has adopted a policy that the maximum number of public company boards on which a non-CEO director may sit is five (including our Board) and the maximum number of public company boards on which a CEO director may sit is three (including our Board).

Board Role in Risk Oversight

The Board annually reviews the Company’s strategic plan, which addresses, among other things, the Company’s risks and opportunities. Certain areas of oversight are delegated to the relevant Committees of the Board and the Committees regularly report back on their deliberations. This oversight is enabled by reporting processes that are designed to provide visibility to the Board about the identification, assessment, monitoring and management of enterprise-wide risks. Management annually conducts enterprise-wide risk assessments of the Company and each of its business segments and regularly updates the Board on the Company’s processes relating to enterprise risk management (“ERM”). Management’s assessment includes a review of strategic, financial, operational, reputational, compliance, cybersecurity, artificial intelligence ("AI"), and information technology (“IT’’) objectives, policies, and risks for the Company. In addition:

Each committee also considers the reputational risk implicated by the oversight responsibilities described above.

Cybersecurity Oversight and Measures

In connection with the annual ERM updates by management, the Audit Committee and full Board review cybersecurity risks and objectives, including the Company’s programs to monitor, identify and mitigate cybersecurity risks. The Company takes cybersecurity threats seriously, including regular reassessment of cybersecurity risks both internally and with third parties and updates to the Board at least annually. The Company's information security management system is based upon the National Institute of Standards and Technology Cybersecurity Framework. Among other best practices, the Company uses multi-factor authentication wherever possible, maintains current versions of firewalls and security software, performs regular cybersecurity training and email phishing campaigns for employees, uses third parties to perform intrusion testing, and maintains disaster recovery and incident response plans, which include retainer contracts for third party cybersecurity response specialists. The Company employs a combination of active and passive methods to monitor for new or developing cybersecurity risks. The Company also maintains cybersecurity insurance.

The Board and the Audit Committee regularly receive reports and training from management and third parties on cybersecurity matters, as part of the Company’s overall enterprise risk management program and oversight thereof. Management is responsible for developing cybersecurity programs, including as may be required by applicable law or regulation. Company IT personnel have the appropriate expertise in IT and cybersecurity, which generally has been gained from a combination of education, including relevant degrees and/or certifications, and prior work experience. Company cybersecurity personnel monitor the prevention, detection, mitigation and remediation of cybersecurity incidents as part of the cybersecurity programs described above. Incidents, if any, are escalated to management and the Board according to the Company’s incident response policy.

Artificial Intelligence Oversight

The Board is also responsible for overseeing the Company's approach to responsible use of AI and other emerging technologies, including the development and implementation of policies and compliance regarding ethical use, transparency, bias mitigation, and risk management in this rapidly developing area.

Clawback Policy

The Company maintains a Clawback Policy, as required by Section 303A.14 of the NYSE Listed Company Manual, that provides for the recovery of “erroneously awarded” incentive based compensation if the Company is required to prepare an accounting restatement due to material noncompliance with any financial reporting requirements under the federal securities laws. The Clawback Policy is administered by the CMD Committee and applies to current and former executive officers as described in the Clawback Policy.

Succession Planning

Our Board, in coordination with the Governance Committee, oversees succession planning for the CEO and other officers of the Company. As part of its succession planning oversight, the Board reviews the executive leadership team’s experience, skills, competence and potential, to help assess which executives have the ability to develop the attributes that the Board believes are necessary to lead and execute the Company's strategic vision.

Stock Ownership Guidelines

The Company maintains Stock Ownership Guidelines under which officers designated as executive officers and non-employee directors are expected to hold a specified amount of our common stock. These expectations are as follows:

The executive officers and non-employee directors have five years from the date they become subject to the guidelines to attain the ownership requirement. Our Stock Ownership Guidelines are available on the “Corporate Governance” page accessed from the “Investor Relations” page of the Company’s website at www.myersindustries.com.

Anti-Hedging and Pledging Policy

The Company prohibits directors, officers and employees from engaging in any hedging or pledging transactions with respect to Company shares.

Board Member Recruiting Guidelines

The Company’s Board Member Recruiting Guidelines outline the process for nominating potential director candidates for consideration by the Governance Committee. These recruiting guidelines are available on the “Corporate Governance” page accessed from the “Investor Relations” page of the Company’s website at www.myersindustries.com.

Executive Sessions of the Board and Committees

The Board has a policy requiring the independent directors, both as to the Board and Committees, to meet regularly in executive session without any management personnel or employee directors present. During 2025, the Board and each Committee met regularly in executive session at each of their respective meetings.

Presiding Directors

The Chair of each Committee of the Board acted as the Presiding Director for each Committee executive session.

Anonymous Reporting and Toll-Free Hotline

The Audit Committee maintains procedures, including a worldwide telephone and web-based “hotline,” which allows employees and interested parties to report any financial or other concerns anonymously. The Company maintains the hotline for receiving, retaining and addressing complaints from any interested party regarding accounting, internal accounting controls and auditing matters, and procedures for the anonymous submission of these concerns. The hotline is maintained by an independent third party and is available worldwide, 24 hours a day, seven days a week. The hotline is available by phone by dialing from an outside line in the United States at 1-877-285-4145; Canada at 1-833-604-0812; and Central America at 800-1785 (at the English prompt dial 833-604-0812) or by Internet at www.myersindustries.ethicspoint.com where you will be prompted to answer a series of questions and submit a report by selecting the country in which you are located and the country in which the violation took place under “To Make a Report”. All reports made through the hotline are directed to the Chair of the Audit Committee and the Secretary. We do not permit any retaliation of any kind against any person who submits a complaint or concern under these procedures.

Code of Ethics

In 2024, we amended and restated our Code of Ethics and Business Conduct (the “Code”), which also incorporates a Code of Ethical Conduct for the Finance Officers and Finance Department Personnel. This Code embodies our firm commitment to ethical and legal business practices and helps ensure that we promote integrity throughout all aspects of our Company. It provides clear guidelines regarding how we approach important issues and decisions that may arise as we strive to provide the best service to our customers and the best work environment for our employees. It also confirms our Board’s expectation that all of our officers, directors and other members of our workforce act ethically and fully comply with all of our corporate policies at all times. The Code is available on the “Corporate Governance” page accessed from the “Investor Relations” page on our website at www.myersindustries.com.

Annual Board and Committee Evaluations

The Board and each Board Committee conduct annual assessments to evaluate whether they are functioning effectively. Self-assessments were conducted in 2023, 2024, and 2025 with the assistance of independent outside counsel and the results were reviewed with individual directors, each Committee, and the Board. In 2022, the evaluation process was conducted by an independent consultant and feedback was provided to the Board and individual directors.

Shareholder Communication with Directors

Our Board provides the following methods for interested parties and shareholders to send communications to a director, to a Committee of the Board, to the non-management directors, or to the Board.

Interested parties may send written communications by e-mail to governance@myersind.com or by mail or courier delivery addressed as follows:

Board of Directors (or Committee Chair, Director or Non-Management Directors, as the case may be)

c/o Secretary

Myers Industries, Inc.

1293 South Main Street

Akron, Ohio 44301

All communications directed to the “Board of Directors” or to the “Non-Management Directors” will be forwarded unopened or unread to the Chair of the Governance Committee. The Chair of the Governance Committee in turn determines whether the communications should be forwarded to the appropriate members of the Board and, if so, forwards them accordingly. For communications addressed to a particular director or the Chair of a particular Committee of the Board, however, the Secretary will forward those communications, unopened or unread, directly to the person or Committee Chair in question.

Any interested party may also contact a director, a Committee of the Board, the non-management directors, or the Board through the Company’s toll-free hotline at (877) 285-4145 or via the internet at myersindustries.ethicspoint.com.

Sustainability

For Myers, “Sustainability” encompasses our commitment to responsible environmental, workforce, community, and governance practices that support long-term performance and shareholder value. We organize our efforts under three sustainability pillars – Products, Planet and People – supported by our Principles, our foundation of governance, ethics, and integrity. This framework guides our actions and oversight of material risks and impacts.

Myers Sustainability Pillars

We manage sustainability-related risks and opportunities through our internal Sustainability Steering Committee (the "Sustainability Committee") consisting of senior leaders and executives. The Sustainability Committee meets regularly to establish sustainability metrics, goals, and reporting standards across the Company and reports to the CEO and Board on material sustainability matters. It operates under a formal charter, which is reviewed and updated as needed, that defines its purpose, governance, membership, responsibilities, priorities, and meeting cadence. Supporting the Sustainability Committee is Myers’ Sustainability Working Committee, which meets weekly and is responsible for advancing sustainability initiatives company wide. The working committee coordinates sustainability data collection, provides timely responses to required sustainability-related requests and disclosures, leads preparation of the Company’s annual Sustainability Report, and serves as an internal resource on sustainability matters.

Operationally, 2025 sustainability highlights included: expanding our resin and product-recycling efforts, enhancing safety programs and improving our safety performance, upgrading facilities for energy efficiency, and strengthening leadership development for long-term success and retention.

Myers will publish its fifth Sustainability Report in April 2026, disclosing progress on sustainability initiatives across the enterprise. In 2025, we again responded to CDP and completed our second enterprise wide EcoVadis assessment.

2025 Progress Summary

Board governance highlights

We continue to evolve our best-in-class corporate governance practices which include regular outreach and engagement with our investors. Shareholder feedback is an essential component of our corporate governance practices and helps drive increased transparency, accountability and, ultimately, more active, engaged and effective corporate oversight. In 2025, we reached out to our top 30 shareholders representing more than 70% of shares owned and engaged with nine of those shareholders, with discussions including Board governance and oversight of strategy, our executive compensation practices, and other currently evolving topics such as sustainability.

During the year, the Board held formal educational sessions on cybersecurity and current best practices in corporate governance, all led by outside advisors. The Board also annually engages in an evaluation process, utilizing a self-assessment process coordinated by independent outside counsel or, every third year, engaging an outside independent party to conduct an evaluation process.

The Board continues to emphasize recruitment and refreshment. Three of our eight independent director nominees are women, we have diverse representation on the Board, and the longest tenure on our Board is 10 years.

We were also gratified by the results of the “say on pay” vote at last year’s annual meeting, with more than 96% of the total shares voted cast in favor of the proposal.