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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934
Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐
Check the appropriate box:

☐ |  | Preliminary Proxy Statement
☐ |  | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☒ |  | Definitive Proxy Statement
☐ |  | Definitive Additional Materials
☐ |  | Soliciting Material Pursuant to §240.14a-12

Acme United Corporation
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check all boxes that apply):

☒ |  | No fee required
☐ |  | Fee paid previously with preliminary materials
☐ |  | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

March 24, 2025

Dear Fellow Shareholder:

On behalf of your Board of Directors and Management, I cordially invite you to attend the 2025 Annual Meeting of Shareholders of Acme United Corporation scheduled to be held on Monday, April 21, 2025, at 11:00 A.M., Eastern Time. The Annual Meeting will be held as a “virtual meeting”, i.e., solely by means of remote communication via the Internet at www.virtualshareholdermeeting.com/ACU2025. Shareholders will be able to participate virtually, vote on matters submitted to the shareholders and submit questions during the Annual Meeting electronically. All shareholders will have the same rights and opportunities to participate in this virtual Annual Meeting as they would have at an in-person annual meeting. The Meeting will be held for the following purposes:

• |  | to elect seven (7) directors to serve for a one-year term,

• |  | to vote, on a non-binding advisory basis, on the compensation of our named executive officers,

• |  | to vote, on a non-binding advisory basis, on the frequency of executive compensation voting, and

• |  | to ratify the appointment of CBIZ CPAs, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2025.

Information regarding these matters is set forth in the accompanying Notice of Annual Meeting and Proxy Statement to which you are urged to give your prompt attention.

We hope that you will attend our virtual Annual Meeting. Whether or not you plan to attend, it is important that your shares be represented and voted at the virtual Annual Meeting. Please take a moment to sign, date and promptly mail your proxy card in the enclosed prepaid envelope. Alternatively, you may vote online or by telephone as instructed in the proxy materials. This will not limit your right to vote via the Internet should you attend the Annual Meeting.

On behalf of your Board of Directors, thank you for your continued support and interest in Acme United Corporation.

Sincerely,

Walter C. Johnsen

Chairman and Chief Executive Officer

Acme United Corporation

1 Waterview Drive

Shelton, Connecticut 06484

NOTICE OF ANNUAL MEETING OF SHAREHOLDERS

TO BE HELD ON MONDAY, APRIL 21, 2025

To our Shareholders:

The 2025 Annual Meeting of Shareholders (the “Annual Meeting”) of Acme United Corporation, a Connecticut corporation (the “Company”), will be held on Monday, April 21, 2025, at 11:00 A.M., Eastern Time. The Annual Meeting will be held virtually via the Internet, and shareholders can access and participate in the Annual Meeting, vote and submit questions by visiting www.virtualshareholdermeeting.com/ACU2025 and entering the control number provided in these proxy materials. Shareholders will be able to participate virtually, vote on matters submitted to the shareholders and submit questions during the Annual Meeting electronically. All Shareholders will have the same rights and opportunities to participate in this virtual Annual Meeting as they would have at an in-person annual meeting. Shareholders will be given an opportunity to inspect the Company’s shareholder list virtually after they have accessed the meeting. Shareholders will also be able to communicate, and to read or hear the proceedings of the meeting, substantially concurrent with such proceedings. Please note that you will not be admitted to the Annual Meeting until you have verified that you are a shareholder by entering the control number provided in these proxy materials.

At the Annual Meeting, shareholders will consider and act upon the following proposals:

1. | To elect seven (7) Directors of the Company;

2. | To vote, on a non-binding advisory basis, on the compensation of our named executive officers;

3. | To vote, on a non-binding advisory basis, on the frequency of executive compensation voting,

4. | To vote upon the ratification of the appointment of CBIZ CPAs, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2025; and

5. | To transact such other business as may properly come before the Meeting.

Shareholders of record at the close of business on March 5, 2025, are entitled to receive notice of and to vote at the Meeting and at any adjournment or postponement thereof. Additional instructions for accessing the Annual Meeting, voting, and submitting questions are in the accompanying proxy materials. Shareholders may submit questions for the Annual Meeting via the Internet after verifying their status as a shareholder and after they have been admitted to the Annual Meeting. Shareholders will have an opportunity to submit written questions via the Internet at any time during the meeting by following the instructions that will be available on the meeting website. However, we recommend that shareholders submit all questions prior to the start of the Annual Meeting.

Please carefully read the attached Proxy Statement for information regarding the matters to be considered and acted upon at the Meeting. Your Board of Directors recommends that you vote in favor of Proposals 1, 2, 3 and 4 above. You are cordially invited to attend the virtual Annual Meeting online and we hope that you will do so.

WHETHER OR NOT YOU EXPECT TO ATTEND THE ANNUAL MEETING, YOU ARE URGED TO COMPLETE, DATE, SIGN AND RETURN THE ENCLOSED PROXY CARD IN THE ENCLOSED RETURN POSTAGE-PAID ENVELOPE. No additional postage need be affixed to the return envelope if mailed in the United States. If you are a shareholder of record, you may vote by submitting your proxy, or you may vote online or by telephone as instructed in the proxy materials. Your proxy may be revoked by you at any time prior to the exercise of the proxy in the manner described in the accompanying proxy statement.

By Order of the Board of Directors,

Paul G. Driscoll

Vice President and Chief Financial Officer, Secretary and Treasurer

March 24, 2025

Shelton, Connecticut

Acme United Corporation

1 Waterview Drive

Shelton, Connecticut 06484

ANNUAL MEETING OF SHAREHOLDERS

TO BE HELD ON April 21, 2025

PROXY STATEMENT

This Proxy Statement and the accompanying Notice of Annual Meeting of Shareholders and Proxy Card are being furnished in connection with the solicitation of proxies by the Board of Directors of Acme United Corporation, a Connecticut corporation (the “Company”), to be used at the Annual Meeting of Shareholders of the Company (the “Annual Meeting”), to be held on April 21, 2025, at 11:00 A.M., Eastern Time. The 2025 Annual Meeting will be held as a “virtual meeting” via the Internet. You will not be able to attend the Annual Meeting in person. You will be able to attend, vote, and submit questions by visiting www.virtualshareholdermeeting.com/ACU2025. This Proxy Statement and the enclosed Proxy Card are being furnished on or about March 25, 2025 to all holders of record of the Company’s Common Stock, par value $2.50 per share (the “Common Stock”), as of the close of business on March 5, 2025. A copy of the Company’s 2024 Annual Report to Shareholders, including consolidated financial statements for the fiscal year ended December 31, 2024, accompanies this Proxy Statement.

At the Annual Meeting, shareholders will:

• |  | Elect seven (7) Directors to serve until the next annual meeting (Proposal 1);

• |  | Vote upon a proposal to approve, on a non-binding advisory basis, the compensation of the Company’s named executive officers (Proposal 2);

• |  | Vote upon a proposal to approve, on a non-binding advisory basis, on the frequency of executive compensation voting (Proposal 3); and

• |  | Vote upon a proposal to ratify the appointment of CBIZ CPAs, P.C. as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025 (Proposal 4).

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE SHAREHOLDER MEETING TO BE HELD ON APRIL 21, 2025.

The Notice of Annual Meeting of Shareholders, this Proxy Statement, Proxy Card, and the 2024 Annual Report to Shareholders are available at the following website address: proxy.acmeunited.com.

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VOTING SECURITIES, RECORD DATE AND QUORUM

Virtual Meeting.

The Annual Meeting will be held on April 21, 2025, at 11:00 A.M., Eastern Time as a “virtual meeting” via the Internet. You will be able to attend virtually, vote and submit questions by visiting www.virtualshareholdermeeting.com/ACU2025. We encourage you to access the Annual Meeting online at least 15 minutes before the beginning of the meeting to allow sufficient time to complete online check-in procedures. In order to join the Annual Meeting, you will need to enter the 16-digit Control Number we have provided in your proxy materials. If your shares are held in the name of a bank, brokerage firm or other nominee, you should follow the instructions provided by them in order to participate in the virtual meeting.

If you have questions about how to attend and participate in the Annual Meeting, there will be Technical Support contact information on the shareholder login page to provide technical support on the day of the Annual Meeting. Personnel will be available 15 minutes prior to the start of the meeting to answer your technical questions.

Questions at the Annual Meeting. Shareholders will have an opportunity to submit written questions via the Internet at any time during the meeting by following the instructions that will be available on the meeting website.

Record Date. The Board of Directors has fixed the close of business on March 5, 2025 as the record date (the “Record Date”) for determination of shareholders entitled to receive notice of and to vote at the Annual Meeting. As of the Record Date, there were 3,754,498 shares of Common Stock issued and outstanding and there were no other voting securities of the Company outstanding.

Quorum. At the Annual Meeting, the virtual attendance of, together with our receipt of proxies from shareholders, representing a majority of, the total number of shares of outstanding Common Stock entitled to vote at the Annual Meeting, will constitute a quorum for the Annual Meeting. Broker non-votes and abstentions will have no effect on the outcome of any of the matters being voted on at the Annual Meeting, as they are not counted as votes cast; but are counted in determining the presence of a quorum.

Voting. Each outstanding share of Common Stock entitles the record holder of the share to one vote. If a shareholder holds shares in street name, and does not submit voting instructions to its broker, bank or other nominee, such broker, bank or other nominee will not be permitted to vote the shareholder’s shares in their discretion on the election of directors, the advisory vote on executive compensation and the advisory vote on the frequency of executive compensation vote (Proposals 1, 2 and 3), but may still be permitted to vote the shareholder’s shares in their discretion on the ratification of the independent registered public accounting firm (Proposal 4). As noted above, abstentions and broker non-votes are not counted as votes cast on any matter to which they relate; accordingly, broker non-votes and abstentions will not affect the outcome of the vote on any of the proposals.

Election of Directors. A plurality of the votes cast via the Internet or by proxy at the Annual Meeting is required to elect each of the nominees for Director.

Advisory Vote on Executive Compensation. To be approved, the non-binding advisory vote on executive compensation must receive a majority of the votes cast via the Internet or by proxy at the Annual Meeting.

Advisory Vote on the Frequency of an Advisory Vote on Executive Compensation. A plurality of the votes cast via the Internet or by proxy at the Annual Meeting is required to select the recommended frequency of future votes on executive compensation.

Ratification of the Appointment of Our Independent Registered Public Accounting Firm. To be approved, the proposal to ratify the appointment of our independent registered public accounting firm for the fiscal year ending December 31, 2025 must receive a majority of the votes cast via the Internet or by proxy at the Meeting.

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VOTING RIGHTS AND SOLICITATION OF PROXIES

Voting by Proxy.

You may cast your vote by proxy prior to the Annual Meeting through the Internet by going to www.proxyvote.com and entering your control number. Shareholders of record that receive paper copies of the proxy materials may also cast their votes by proxy and submit their voting instructions by:

• |  | signing, completing and returning the proxy card in the postage-paid envelope provided; or

• |  | using the telephone number listed on their proxy card.

Votes and voting instructions provided through the Internet and by telephone are authenticated by use of your control number. This procedure allows shareholders to appoint a proxy, provide voting instructions, and to confirm that their actions have been properly recorded. If you vote through the Internet or by telephone, you do not need to return your proxy card.

The proxy solicited hereby, if properly executed and returned to the Company and not revoked prior to or at the Meeting, will be voted in accordance with the instructions specified thereon. If you properly sign and return your Proxy Card, but do not specify your choices, your shares will be voted by the proxy holders as recommended by the Board of Directors.

The Board of Directors encourages you to complete and return the Proxy Card or vote via Internet or telephone even if you expect to attend the Annual Meeting. You may subsequently revoke your proxy at any time before it is voted at the meeting by (i) giving written notice of revocation to the Secretary of the Company, (ii) submitting of a proxy bearing a later date, or (iii) attending the meeting virtually and voting at the meeting.

The proxy holders, Walter C. Johnsen and Susan H. Murphy, will vote all shares of Common Stock represented by Proxy that are properly executed and returned by shareholders. The proxy also authorizes the proxy holders to vote the shares represented in their sole discretion with respect to any matters not included in this Proxy Statement that may properly be presented for consideration at the Annual Meeting. You must return a signed Proxy Card or vote via Internet as provided in these proxy materials or telephone as instructed on the Proxy Card if you want the proxy holders to vote your shares of Common Stock.

Voting at the Annual Meeting.

Shareholders may cast their votes electronically via the Internet at the Annual Meeting by following the instructions at www.virtualshareholdermeeting.com/ACU2025.

Solicitation of Proxies.

The cost of soliciting proxies will be borne by the Company. Following the mailing of proxy solicitation materials, proxies may be solicited by directors, officers and employees of the Company and its subsidiaries personally, by telephone or otherwise. Such persons will not receive any fees or other compensation for such solicitation. In addition, the Company will reimburse brokers, custodians, nominees and other persons holding shares of Common Stock for others for their reasonable expenses in sending proxy materials to the beneficial owners of such shares and in obtaining their proxies. The Company has engaged MacKenzie Partners, Inc. to assist in the solicitation of votes and the distribution of proxy materials for a fee of $9,000, plus out-of-pocket expenses.

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GOVERNANCE OF THE COMPANY

Board of Directors

The By-laws of the Company provide that the Company shall have a Board of Directors of not fewer than five nor more than nine directors, as determined by the Board from time to time. The number of directors is presently fixed at eight. Directors serve until the next annual meeting of shareholders and until their respective successors have been elected and qualified.

The Board has determined that it is beneficial to combine the positions of its Chief Executive Officer and Chairman of the Board. In making this determination, the Board of Directors considered a number of factors, including the size of the Board in relation to the scope of the Company’s operations, the efficiencies obtained by combining the positions and the fact that the combination of the positions facilitates the alignment of the Board’s agenda with its oversight responsibilities relating to the business and operations of the Company. The Company does not have a lead independent Director.

Board of Director Meetings and Committees

The Board of Directors held seven meetings in 2024. In 2024, each Director attended at least 75% of the aggregate of the total number of Board meetings and meetings of committees of the Board of which they were a member. The Board of Directors has established standing Executive, Audit, Compensation and Nominating Committees, each of which is comprised solely of independent non-employee members of the Board of Directors.

Independence Determinations

The Board of Directors annually determines the independence of directors. No director is considered independent unless the Board has determined that he or she has no material relationship with the Company, either directly or as a partner, shareholder, or officer of an organization that has a material relationship with the Company or otherwise. Material relationships can include commercial, banking, consulting, legal, accounting, charitable, and familial relationships, among others.

Independent directors are directors who, in the view of the Board of Directors, are free of any relationship that would interfere with the exercise of independent judgment. Under NYSE American rules, the following persons are not considered independent:

(a) | a director who is or was employed by the Company or any of its affiliates for the current year or any of the past three years;

(b) | a director who accepted or who has an immediate family member who accepted any compensation from the Company or any of its affiliates in excess of $120,000 during any period of twelve consecutive months within the three years preceding the determination of independence (other than certain specified types of compensation, including, e.g., compensation for Board or Committee service, benefits under a tax-qualified retirement plan, or non-discretionary compensation);

(c) | a director who is a member of the immediate family of an individual who is, or has been in any of the past three years, employed by the Company as an executive officer;

(d) | a director who is, or has an immediate family member who is, a partner in, or a controlling shareholder or an executive officer of, any organization to which the Company made, or from which the Company received, payments (other than those arising solely from investments in the Company’s securities) that exceed 5% of the organization’s consolidated gross revenues for that year, or $200,000, whichever is more, in any of the past three years;

(e) | a director who is, or has an immediate family member who is, employed as an executive of another entity where at any time during the most recent three fiscal years, any of the Company’s executive officers served on that other entity’s compensation committee; and

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(f) | a director who is, or has an immediate family member who is, a current partner of the Company’s outside auditor, or was a partner or employee of the Company’s outside auditor who worked on the Company’s audit at any time during any of the past three fiscal years.

Immediate family includes a person’s spouse, parents, children, sibling, mother-in-law, father-in-law, brother-in-law, sister-in-law, son-in-law, daughter-in-law, and anyone who resides in such person’s home.

Mr. Johnsen, Chairman of the Board, serves as Chief Executive Officer of the Company, and Mr. Olschan, a member of the Board, serves as President and Chief Operating Officer of the Company. Each is standing for re-election as a non-independent director. The Board has determined that all of the six other current directors are “independent” within the meaning of the applicable listing standards of the NYSE American. The independent directors are: Mr. Barker, Mr. Conway, Mr. Davidson, Mr. Holden, Dr. Murphy, and Mr. Ward, each of whom, other than Mr. Ward, is standing for re-election. Mr. Ward has announced his intention to retire from the Board of Directors at the conclusion of the Annual Meeting and accordingly is not standing for reelection to the Board.

Nominations for Directors

The Board of Directors is responsible for selecting director nominees to stand for election at each annual meeting of shareholders and for filling vacancies on the Board at any time during the year. The Board has established a Nominating Committee that reviews all potential director candidates and recommends candidates to the full Board. The Nominating Committee will also consider nominations by shareholders, as described below. The full Board reviews and has final approval authority over all director nominees to be recommended to the shareholders for election.

In considering candidates for new membership or incumbents for continued membership on the Board of Directors of the Company, the Nominating Committee considers the factors set forth below, together with any other factors the Committee deems appropriate from time to time. The Nominating Committee generally seeks (i) active or former senior level executives of public companies or other complex organizations who have experience at a strategy/policy setting level or with high level management experience; (ii) persons whose background and experience are in areas important to the operations or management of the Company; and (iii) qualified individuals who, taken as a group, represent a diversity of skills, background and experience. Each potential nominee:

(a) | should be accomplished and have recognized achievements in his or her respective and professional field;

(b) | should have relevant expertise and experience, and be able to offer advice and guidance to senior management based on that expertise and experience;

(c) | must possess high personal and professional ethics, integrity and values;

(d) | must be inquisitive and objective, have the ability to exercise practical and sound business judgment, and have an independent mind;

(e) | must be able and willing to devote sufficient time and effort to carrying out his or her duties and responsibilities as a director effectively;

(f) | if the nominee is not an employee of the Company, the nominee should be “independent” under the rules established by the NYSE American; and

(g) | should have the ability to work effectively with others.

The Nominating Committee commences its evaluation of candidates on the basis of materials submitted by or on behalf of the candidate and on the basis of the knowledge of members of the Nominating Committee and management regarding the candidate. To the extent the Nominating Committee does not have enough information to evaluate a candidate, the Nominating Committee may send a questionnaire to the candidate for completion for Nominating Committee consideration. In addition, it has historically been customary for

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some members of the Board to meet with the candidate individually or in small groups, as appropriate. Members of the Nominating Committee will also interview candidates as the Nominating Committee deems appropriate.

The Nominating Committee considers diversity in identifying nominees for Director. As stated above, the Nominating Committee seeks qualified individuals, who, taken as a group, represent a diversity of skills, background and experience. In considering a potential nominee’s background and experience, the Nominating Committee will consider the individual’s race, gender, ethnicity, and related characteristics.

Any shareholder entitled to vote for the election of directors at a meeting may nominate persons for election as directors if, as more fully provided in Article 2, Section 11 of the By-laws, the shareholder provides written notice of such shareholder’s intent to make such nomination at least sixty (60) days prior to the annual meeting at which the election of directors is to be held. If directors were to be elected at a special meeting of shareholders, the written notice of the shareholder’s intent to make a nomination must be provided to the Company not later than the close of business of the seventh day following the date on which notice of the special meeting is first given to shareholders. The nomination must be sent in care of the Secretary of the Company at 1 Waterview Drive, Shelton, CT 06484, and must include, among other information, the name, address, telephone number and resume of the nominee’s business and educational background, along with a written statement by the shareholder as to why such person should be considered for election to the Board of Directors.

The Board will consider nominees for directors properly recommended by shareholders, as described above. The Board follows the same evaluation procedures whether a candidate is recommended by the Nominating Committee or shareholders.

COMMITTEES OF THE BOARD

Executive Committee

The Executive Committee of the Board of Directors is comprised of Mr. Holden, who serves as Chairman, and Mr. Ward. The function of the Executive Committee is to act on behalf of the Board of Directors during the intervals between meetings of the Board.

Audit Committee

The Audit Committee assists the Board of Directors in overseeing (1) the audit and integrity of our financial statements, (2) the performance of our independent auditors, (3) the adequacy and effectiveness of our accounting, auditing and financial reporting processes, and (4) our compliance with legal and regulatory requirements. The duties of the Audit Committee include the selection and appointment of our independent auditors, including evaluation of their qualifications, performance and independence. The Committee consists of Mr. Ward, Chairman, and Messrs. Holden, Davidson, Barker and Conway. The Board of Directors has determined that all members of the Audit Committee are “independent” and “financially literate” within the meaning of the applicable listing standards of the NYSE American. In addition, the Board has determined that Mr. Ward qualifies as an “audit committee financial expert” within the meaning of regulations adopted by the Securities and Exchange Commission (the “SEC”) and has the financial sophistication required under the listing standards of the NYSE American.

The Audit Committee meets at least quarterly, and more often, as needed. The Committee met four times in 2024. The Board of Directors has adopted a written charter for the Audit Committee that conforms to applicable SEC and NYSE American rules; the charter is reviewed annually by the Audit Committee. A copy of the Audit Committee charter is available on the Company’s website at www.acmeunited.com in the Investor Relations/Corporate Governance section.

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Compensation Committee

The Compensation Committee of the Board of Directors assists the Board in establishing the compensation policies for cash and equity compensation of our executive officers. The primary duties of the Committee are (i) evaluating and making recommendations to the Board regarding the compensation, equity incentives and awards and benefits for our executive officers; and (ii) the administration of the Company’s Non-Salaried Director Stock Option Plans. The Board of Directors has determined that all members of the Compensation Committee are “independent” within the meaning of the applicable listing standards of the NYSE American. The Committee consists of Mr. Holden, Chairman, Mr. Davidson and Dr. Murphy. The Committee meets at least once a year and more often as needed. The Committee held three meetings during 2024. The Board of Directors has adopted a written charter for the Compensation Committee; a copy of the charter is available on the Company’s website at www.acmeunited.com in the Investor Relations/Corporate Governance section.

Nominating Committee

The Nominating Committee assists the Board in identifying individuals qualified to become Board members and recommends director candidates to be nominated by the Board to stand for election as directors at each annual meeting of shareholders of the Company and to fill vacancies on the Board and any newly created directorships. The Nominating Committee consists of Mr. Holden, Chairman, and Messrs. Davidson and Ward. The Board of Directors has determined that all members of the Nominating Committee are “independent” within the meaning of the applicable listing standards of the NYSE American. The Nominating Committee meets at least once a year and more often as needed. The Committee held one meeting in 2024. The Board of Directors has adopted a written charter for the Nominating Committee which is reviewed annually by the Nominating Committee. A copy of the charter is available on the Company’s website at www.acmeunited.com in the Investor Relations/Corporate Governance section.

Board’s Role in Oversight of Risk Management.

The Company’s Board of Directors as a whole exercises risk oversight in connection with risk in its various forms, including credit risk, liquidity risk, inflationary risk and operational risks including cybersecurity risk, supply chain risk and labor supply risk. The Board discusses with management the steps that management will take to monitor and control the Company’s exposure to such risks.

A key element of the Board’s risk oversight process is the Company’s annual Strategic Planning meeting, a two-day meeting held early in the third quarter of each year. At this meeting, the Board meets with senior management of the Company to identify both risks and opportunities facing the Company. The senior management includes the Company’s Chief Executive Officer, Chief Operating Officer, Chief Financial Officer, Chief Information Officer and the heads of product development, technology, production, sourcing, marketing and supply chain. The Board and members of senior management continue their discussions of various risk-related matters, as appropriate, throughout the year at the regularly scheduled meetings of the Board.

The Board believes that the foregoing procedures enable it to properly perform its risk oversight, particularly since the Company is not overly leveraged and does not utilize complex financial derivative instruments.

Attendance at Annual Meetings

While the Company has no formal policy regarding the attendance of Board members at annual meetings of shareholders, director attendance is deemed very important and is strongly encouraged. All members of the Board attended the virtual 2024 Annual Meeting of Shareholders.

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Code of Conduct

The Company has adopted a Code of Conduct that is applicable to its employees, including the Chief Executive Officer, Chief Financial Officer and Controller. The Code of Conduct is available in the investor relations section on the Company’s website at www.acmeunited.com.

If the Company makes any substantive amendments to the Code of Conduct which apply to its Chief Executive Officer, Chief Financial Officer or Controller, or grants any waiver, including any implicit waiver, from a provision of the Code of Conduct to the Company’s executive officers, the Company will disclose the nature of the amendment or waiver on its website.

The Company has not adopted any practices or procedures regarding the ability of its employees (including officers) or its directors to engage in transactions that hedge or offset any decrease in the market value of the Company’s common stock or other equity securities.

Insider Trading Policy

The Company has a long-standing Insider Trading Policy which governs the purchase and sale or other disposition of the Company’s securities by directors, officers, employees and the Company itself, which is reasonably designed to promote compliance with insider trading laws, rules and regulations, including those of the NYSE American. A copy of the Company’s Insider Trading Policy appears as Exhibit 19 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

Shareholder Communications with Directors

The Company has established a process for shareholders to send communications to the Board of Directors. Shareholders may send communications to the Board of Directors to the attention of the Secretary, Acme United Corporation, 1 Waterview Drive, Shelton, Connecticut 06484, who will forward them to all Board members within a reasonable time after receipt. If a shareholder wishes the communication to be sent to one or more specific Board members only, the addressee should be the specific Board member(s), “c/o Secretary,” who will then forward the communication to such Board member(s). If one or more specific Board members are not designated for such other communication, the communication will be forwarded to the entire Board.

PROPOSAL 1: ELECTION OF DIRECTORS

Seven directors are to be elected at the Annual Meeting to serve for one-year terms until the 2025 Annual Meeting of Shareholders and until their respective successors are elected and qualified. A plurality of the votes cast at the Annual Meeting is required to elect each of the nominees for Director. The Board has nominated seven individuals for election to the Board of Directors, all of whom are presently incumbent directors. The Board of Directors knows of no reason why any nominee would be unable to serve as director. Each nominee has consented to being named as a nominee for director of the Company in this Proxy Statement and to serve as a director, if elected. If any nominee should, for any reason, become unable to serve, then all valid proxies will be voted for the election of a substitute nominee, if any, designated by the Board.

As stated above, Mr. Ward has announced his intention to retire from the Board of Directors at the conclusion of the Annual Meeting and accordingly is not standing for reelection to the Board. The number of Directors is presently fixed at eight; effective at the conclusion of the Annual Meeting, the number of Directors will be fixed at seven.

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The following information about the nominees for election as our directors is based, in part, upon information furnished by the nominees. Each nominee is an incumbent director.

Nominees |  | Principal Occupation and Relevant Skills |  | Director Since |
Walter C. Johnsen (age 74) |  | Chairman of the Board and Chief Executive Officer of the Company since January 1, 2007; President and Chief Executive Officer of the Company from November 30, 1995 to December 31, 2006. Mr. Johnsen previously served as Vice Chairman and a principal of Marshall Products, Inc., a medical supply distributor. Mr. Johnsen has served on the Board of TOMI Environmental Solutions, Inc., a publicly traded company, since February 1, 2016. Mr. Johnsen’s qualifications to serve on the Board of the Company include the in-depth knowledge of all facets of the Company’s business which he has gained during his more than twenty-nine years of service as the Company’s Chief Executive Officer. |  |  | 1995 |
Richmond Y. Holden, Jr. (age 71) |  | Mr. Holden served as President and CEO of INgageHub, a cloud based Marketing SaaS platform, from January 2015 through early 2016; he continued to serve as a senior advisor to the company until 2019. From 2007 through 2014, Mr. Holden served in senior executive positions at School Specialty, Inc., a leading distributor of school supplies, equipment and curriculum products. He last served as Executive Vice President and President of the Curriculum Group (2013-2014) and previously as President of Educational Resources (2010- 2013). From 1992-2006, he was Chairman and Chief Executive Officer of J.L. Hammett Co., a national reseller of educational curriculum, equipment, furniture and products (acquired by School Specialty, Inc. in 2006). Mr. Holden has served on corporate and non-profit boards including: (i) the Board of Directors of Software Secure, Incorporated, a privately-held company headquartered in Newton, MA, which focused on secure online educational testing technology (2007-2016, until its acquisition) and (ii) since 2012, the Board of Directors of Codman Academy Charter Public School in Boston MA, which focuses on innovative experiential education models, where he has also served as President since 2024. The qualifications of Mr. Holden to serve on the Board of the Company include his substantial senior executive management experience in large complex companies in the educational markets. In particular, his tenure at School Specialty, Inc., then a $650 million publicly-held reseller of educational products, provides Mr. Holden with deep industry experience in: (i) strategic-planning and business development; (ii) finance, marketing, and sales leadership; (iii) technology and SaaS platform expansion; (iv) supply chain sourcing and operational optimization; and (v) pricing strategies and distribution models. |  |  | 1998 |
Brian S. Olschan (age 68) |  | President and Chief Operating Officer of the Company since January 1, 2007; Executive Vice President and Chief Operating Officer of the Company from January 1999 to December 31, 2006; Senior Vice President - Sales and Marketing of the Company from September 1996 to January 1999. Mr. Olschan previously served as Vice President and General Manager of the Cordset and Assembly Business of General Cable Corporation, an electrical wire and cable manufacturer. Mr. Olschan’s qualifications to serve on the Board include his detailed knowledge of the Company’s operations which he has gained in his capacity as a member of senior management for more than 28 years, including as Chief Operating Officer since January 1999 and President since January 2007. |  |  | 2000 |

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Susan H. Murphy (age 73) |  | Vice President Emerita, Cornell University, from which Dr. Murphy retired in 2016 after a 38-year career, commencing in 1978. She served as Dean of Admissions and Financial Aid from 1985 to 1994; Vice President of Student and Academic Services from 1994 to June 2015, and thereafter she worked in Alumni Affairs and Development until her retirement in 2016. In 2013, Dr. Murphy became a member of the Board of Trustees of Adelphi University, and served as Vice Chair of its Board of Trustees from 2016 to 2021, and Chair of Academic Affairs and Student Life Committee until her term ended in 2024. She also served on the Board of Directors for Kendal at Ithaca, a not-for-profit continuing care retirement community from 2014 to 2023. In January 2025, Dr. Murphy became a member of the Board of Directors of Kendal Corporation, where she serves on the Governance Committee. Dr. Murphy received a Ph.D. in Educational Administration from Cornell University. Dr. Murphy has broad senior management level experience in a large, complex organization. In particular, her experience in employee compensation matters and the development and implementation of diversity policies is helpful to the Company. |  |  | 2003 |
Rex L. Davidson (age 75) |  | Since 2009, Mr. Davidson has served as President of Rex Davidson Associates, LLC, a management consulting service. Areas of consultation have included data privacy, especially regarding client and employee data as well as cybersecurity issues. Human capital issues were also addressed including how to recruit, manage and retain a diverse workforce. From 2013-2019, Mr. Davidson served as Executive Director of the Helms Fund. The Helms Fund provides “gap financing” to socially responsible business ventures for capital expenditures. From 2009 to 2019, Mr. Davidson served as Executive Director of Las Cumbres Community Services, which provides developmental disability and mental health services to children, adults and families in Northern New Mexico. Data security for both the company and its clients was an important focus of management. He also served as the Director of Special Initiatives from 2020 to 2021. From 1982 to 2009, Mr. Davidson served as President and Chief Executive Officer of Goodwill Industries of Greater New York and Northern New Jersey, Inc., an organization then having over 2,000 employees and revenues in excess of $100 million. He also served as President of Goodwill Industries Housing Corporation. In his leadership positions, Mr. Davidson addressed significant environmental/climate, data security, and diversity issues and matters. Mr. Davidson’s qualifications to serve on the Board include significant management experience at the highest level in large organizations, having been responsible for the management of Goodwill Industries, among others. Mr. Davidson’s experience in the areas noted above and in the areas of compensation of personnel at all levels, retail matters, such as retail trends and pricing, and diversity policies is of significant benefit to the Company. |  |  | 2006 |

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Brian K. Barker (age 65) |  | Mr. Barker was a founder of AntelopeAI, LLC an artificial intelligence and machine learning start-up; he served as its CEO from December 2018 until his retirement in 2022. He was a founder, director, and CEO of NorthBay Solutions, LLC, a big data and analytics company from 2010 to 2018, and continues to serve as a director. Since January 2024, Mr. Barker has served on the Board of Directors of Zeptive, a provider of vape detection and air quality monitoring technology. Mr. Barker was the General Manager of the xDoc business unit for Document Sciences Corporation, a document management and customer communications management solutions company, from 2007 until it was acquired by EMC Corporation, an information infrastructure solutions company, in 2008, and then continued as General Manager of the xDoc Business Unit until 2010. He previously was CEO of Cambridge Technology Vision, LLC, a merger and acquisition support software company, from 1997 to 2001, and was President of ClearSpring Technologies, Inc., an event-driven management software company, from 1989 to 1992. Mr. Barker is the co- inventor of Acquisition Trustee, which Intralinks Holdings, Inc. acquired to incorporate in its platform for secure document sharing. The qualifications of Mr. Barker to serve on the Board include his strong data analysis background, significant entrepreneurial achievements, and executive management experience at rapidly growing information technology companies. |  |  | 2019 |
Paul J. Conway (Age 65) |  | Mr. Conway is a founder and was managing member of Spark Capital Partners, LLC, an early-stage technology venture capital firm, organized in July 2005. From 2022 until his retirement in mid-2024, Mr. Conway served as its Chief Operating Officer and was responsible for financial reporting (both internal and for external investors), treasury, tax, human resources, and investor relations. From 2005-2021, he was Chief Financial Officer of Spark Capital. The firm invests primarily in companies, including in the areas of AI and SaaS and microchip technology. From 2001-2005, Mr. Conway was an executive consultant to early-stage technology companies, having interim executive positions in finance and operations; during this period, he primarily served as an interim CFO. From 1988-2000, Mr. Conway served as Chief Financial Officer of Charles River Ventures (CRV), an early-stage technology venture capital firm. Prior to that, while working at Touche Ross & Co. (1981-1986), now part of Deloitte and Touche, he rose to the level of audit manager. Mr. Conway’s qualifications for service on the Board include his significant entrepreneurial achievement and extensive experience in senior executive level positions in finance, audit oversight, and administration. Mr. Conway was a licensed Certified Public Accountant for over 10 years. |  |  | 2024 |

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Vote Required

A plurality of the votes cast at the Annual Meeting via the Internet or by proxy is required to elect each of the nominees for Director.

The Board of Directors unanimously recommends a vote FOR each of the individuals nominated by the Board for election to the Board of Directors as described in this Proposal 1.

OWNERSHIP OF ACME UNITED CORPORATION STOCK

Principal Shareholders

The following table sets forth certain information (unless otherwise indicated), as of March 5, 2025, with respect to the beneficial ownership of shares of Common Stock by any person who, to the knowledge of the Company, owned beneficially more than 5% of the outstanding shares of Common Stock. The persons shown have sole voting and investment power in these shares except as indicated below in the notes to the table.

Name and Address of Beneficial Owner |  | Number of Shares Beneficially Owned (1) |  | Percent of Class (2)
Walter C. Johnsen 1Waterview Drive Shelton, CT  06484 |  | 663,499 (3) |  | 16.2
The Capital Management Corporation 4101 Cox Road, Suite 100 Glen Allen, VA  23060 |  | 569,849 (4) |  | 15.2
North Star Investment Management 20 N. Wacker Dr., Suite 1416 Chicago, IL  60606 |  | 299,403 (5) |  | 8.0
Brian S. Olschan 1Waterview Drive Shelton, CT  06484 |  | 286,553 (6) |  | 7.2
Mink Brook Capital GP LLC 201 Summa Street West Palm Beach, FL  33405 |  | 251,580 (7) |  | 6.7

(1) | Under applicable rules promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), a person is deemed to be the beneficial owner of shares of Common Stock if, among other things, he or she directly or indirectly has or shares voting power or investment power with respect to such shares. A person is also considered to beneficially own shares of Common Stock which he or she does not actually own but has the right to acquire presently or within the next sixty (60) days, whether by exercise of stock options or otherwise.

(2) | Based on a total of 3,754,498 shares outstanding as of March 5, 2025.

(3) | Includes 348,500 shares issuable upon exercise of options.

(4) | As of December 31, 2024, as reported in the reporting person’s Schedule 13G/A dated February 5, 2025, as filed with the SEC.

(5) | As of December 31, 2024, as reported in the reporting person’s Schedule 13G/A dated January 7, 2025, as filed with the SEC. The shares reported include 127,103 shares as to which the reporting person has shared investment power.

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(6) | Includes 245,450 shares issuable upon exercise of options.

(7) | As of December 31, 2024, as reported in the reporting person’s Schedule 13G dated November 11, 2024, as filed with the SEC. The reporting person shares voting and dispositive power with certain affiliated persons with respect to the shares reported.

Security Ownership of Directors and Officers

The following table sets forth certain information, as of March 5, 2025, with respect to the beneficial ownership of shares of Common Stock by (i) each director and nominee for director of the Company; (ii) each executive officer named in the Summary Compensation Table appearing below under “Executive Compensation”; and (iii) all executive officers and directors as a group. The persons shown have sole voting and investment power in these shares except as indicated below in the notes to the table.

The address of each person appearing in the table is 1 Waterview Drive, Shelton, CT 06484.

Name of Beneficial Owner |  | Number of Shares Beneficially Owned (1) |  | Percent of Class (2)
Rex L. Davidson |  |  |  | 22,728 | (3) |  |  |  | 0 .6 |
Paul G. Driscoll |  |  |  | 173,523 | (4) |  |  |  | 4.5 |
Richmond Y. Holden, Jr. |  |  |  | 34,250 | (5) |  |  |  | 0.9 |
Walter C. Johnsen |  |  |  | 663,499 | (6) |  |  |  | 16.2 |
Susan H. Murphy |  |  |  | 28,787 | (7) |  |  |  | 0.8 |
Brian S. Olschan |  |  |  | 286,553 | (8) |  |  |  | 7.2 |
Brian K. Barker |  |  |  | 17,800 | (9) |  |  |  | 0.5 |
Paul J. Conway |  |  |  | 1,250 | (10) |  |  |  | — |
Stevenson E. Ward III |  |  |  | 32,874 |  |  |  |  | 0.9 |
Executive officers and directors as a group (9 persons) |  |  |  | 1,261,264 |  |  |  |  | 31.4 |

(1) | Under applicable rules promulgated under the Exchange Act, a person is deemed to be the beneficial owner of shares of Common Stock if, among other things, he or she directly or indirectly has or shares voting power or investment power with respect to such shares. A person is also considered to beneficially own shares of Common Stock which he or she does not actually own but has the right to acquire presently or within the next sixty (60) days, whether by exercise of stock options or otherwise.

(2) | Based on a total of 3,754,498 shares outstanding as of March 5, 2025.

(3) | Includes 21,500 shares issuable upon exercise of options.

(4) | Includes 123,125 shares issuable upon exercise of options.

(5) | Includes 19,000 shares issuable upon exercise of options.

(6) | Includes 348,500 shares issuable upon exercise of options.

(7) | Includes 21,500 shares issuable upon exercise of options.

(8) | Includes 245,450 shares issuable upon exercise of options.

(9) | Includes 16,500 shares issuable upon exercise of options.

(10) | Includes 1,250 shares issuable upon exercise of options.

EXECUTIVE COMPENSATION

The following compensation disclosure is intended to comply with the requirements applicable to “smaller reporting” companies (as defined in Item 10 of Regulation S-K promulgated under the Securities and Exchange Act of 1934). This section also includes supplemental narrative that describes the 2024 executive compensation program for the Company’s principal executive officer and each of the two most highly compensated executive officers of the Company, who constitute our Named Executive Officers (“NEOs”).

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Oversight of Executive Compensation

The Compensation Committee is comprised of independent, non-employee members of the Board of Directors and is responsible for evaluating and making recommendations to the Board of Directors regarding the compensation to be paid to the NEOs. Our Board of Directors is responsible for making all NEO compensation decisions. Our compensation policies and programs for our executive officers are designed to support the overall objective of enhancing value for our shareholders. To achieve this objective, it is critical that we be able to attract, motivate, reward and retain highly qualified and productive individuals by providing competitive compensation packages. We design our executive compensation programs to:

• |  | attract, motivate and retain executives with the skills and expertise necessary to execute our business plans;

• |  | directly relate compensation to both Company and individual performance;

• |  | provide compensation packages that are externally competitive, reasonable and fair within the highly competitive market for talented individuals in our industry but are also internally equitable;

• |  | reward executives fairly over time for actions consistent with creating long-term shareholder value and enable executives to share in the future success of the Company by acquiring equity interests in the Company;

• |  | provide an optimal combination of costs to the Company and value to our employees; and

• |  | align the interests of our executive officers with those of our shareholders.

Compensation Program for Executive Officers

In 2024, the compensation and benefits program for our executive officers continued to consist of four components which we designed to reward and provide incentives for both short-term and long-term performance and to minimize excessive risk taking:

• |  | base salary;

• |  | a performance based cash bonus award;

• |  | performance based stock option awards; and

• |  | a benefits package.

The Compensation Committee establishes a total compensation program for each NEO that is a mix of current, short-term and long-term incentive compensation, and cash and non-cash compensation, that it believes appropriate to achieve the goals of our executive compensation program and our corporate objectives. In line with our pay for performance philosophy, we structured a significant portion of our NEOs’ 2024 compensation to be variable, at risk and tied directly to our measurable performance in the form of performance-based bonuses and long-term stock options incentives.

Consistent with the Company’s compensation philosophy, in determining the base salary of our NEOs for 2024, the Board has considered a number of factors, including:

Quantitative Factors

• |  | Sales Growth—Average annual growth rate over ten years of 7%.

• |  | Strong Financial Position—In recent years the Company has significantly reduced bank debt to provide at December 31, 2024, approximately $47 million of availability under its $65 million credit facility. This strong liquidity will allow the Company to fund acquisitions and growth.

• |  | Dividend Increase—Increase in the quarterly dividend from $.02 per share in 2004 to $.15 per share in 2024 – an eight-fold increase.

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Business and Operational Milestones and Achievements

• |  | Diversification of Product Lines—During the past eight years, sales of first aid and medical products have grown to approximately 61% of total sales. As a result, we have broadened our customer and revenue base. In addition, our sales of school, home, craft and office products increased 10% in 2024, partly due to the introduction of new products.

• |  | First Aid Acquisition—On May 23, 2024, the Company acquired the assets of Elite First Aid, Inc., a leading supplier of tactical, trauma and emergency response products. The Company successfully integrated the assets and business in the fourth quarter of 2024.

• |  | Markets/Products—In 2024, we:

• |  | Introduced first aid SmartCabinet 2.0 with patented RFID technology that automates the requisition process and helps end users to maintain OSHA compliance.

• |  | Expanded in the craft market by providing advanced cutting tools which are used for precise and unique designs.

• |  | Expanded into the home and culinary markets with a wide variety of DMT sharpening tools, including versatile countertop pull-through sharpeners.

• |  | Cost Reduction Initiatives—In 2024, the Company implemented a variety of productivity enhancements across our manufacturing and distribution facilities, along with a reduction in SG&A expenses and other costs, leading to approximately $2 million in ongoing annual savings.

• |  | Capacity Expansion—In 2024, the Company installed a new storage racking system in our 340,000 square foot Rocky Mount, NC distribution center, resulting in a 30% capacity increase.

Base Salaries

Base salary provides financial stability and security to our NEOs through a fixed amount of cash for performing job responsibilities. The base salaries for our officers are set annually and reflect skills and experience, level and scope of responsibility and performance during the prior year, historical, long-term performance and our objective of achieving a base salary structure that is internally equitable. The Compensation Committee also considers external factors, such as cost of living in the areas in which our officers reside and current market conditions. During 2024, the Chief Executive Officer participated in discussions with the Compensation Committee regarding the base salary amounts of the executive officers.

Performance Based Cash Bonus Plan

The Company grants performance based “at risk” cash bonus awards under our Cash Bonus Plan based upon the achievement of both Company and individual performance objectives. The Company generally makes cash awards under this Plan if the Company achieves the minimum level of net income set by the Compensation Committee for the applicable year.

Specifically, at the beginning of each fiscal year, the Company establishes a cash bonus pool equal to 15% of the Company’s budgeted net income before taxes for that year. Payment of cash bonuses is contingent on achievement of the budgeted net income before taxes after the accrual for bonuses.

The bonus pool is adjusted for company performance. It increases to 16% for net income before taxes 110% over the budgeted amount and declines to 14% for net income before taxes within 90% of the budget. The Compensation Committee establishes a detailed sliding scale, subject to the approval of the Board of Directors.

The Company allocates an amount equal to 15% of base salary to key managers, including the NEOs. The Company then adjusts the individual allocations based on individual performance, with the historical range of payout being between 0% and 25% of base salary. The proposed bonuses are then totaled and compared to the cash bonus accrual for the fiscal year and adjusted so that the total does not exceed the accrual.

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If the operating budget is not achieved within the guidelines, no bonus is awarded. In fact, no bonuses were awarded in 2017, 2018 and 2022. In eight of the last sixteen years (i.e., 2009 – 2024), the NEOs received no cash bonuses.

In 2023 and 2024, the Company did not award cash bonuses under the plan to our NEOs. Transaction based cash bonuses were paid in 2023 and 2024 primarily related to the successful asset disposition of the Camillus and Cuda product lines on November 1, 2023.

Deferred Compensation Plan

Under the Company’s Deferred Compensation Plan for executives and key managers participating in the Company’s Cash Bonus Plan, participants will be eligible to make an irrevocable election on or before December 31st of each year as to the percentage of his or her bonus to be awarded in the following year. The deferral may be for all or a portion of the participant’s payment under the Cash Bonus Plan. All deferred amounts are non-forfeitable and earn the prime rate of interest plus 1% compounded quarterly during the period of deferral. The Company adds 20% to the deferred amount for each employee as a matching contribution up to a maximum of $10,000 annually. Amounts are deferred until separation from service with the Company. The plan is administered by the Deferred Compensation Plan Committee, which consists of our Chief Executive Officer, the Chief Operating Officer and the Chief Financial Officer.

Stock Option Program For Employees

The Company’s stock option program is administered by the Board of Directors, which acts upon recommendations of the Compensation Committee. The purpose of the Company’s stock option program is to facilitate the acquisition of equity interests in the Company by its officers and key employees, thereby enabling them to share in the future success of the Company’s business.

The Compensation Committee historically has believed that stock options are the appropriate form of equity to grant to our NEOs, considering market practices and the Compensation Committee’s goal of tying pay to performance. Stock options only provide value if the market price of our stock increases and therefore the Compensation Committee believed that options directly incentivized our executives to increase shareholder value over the long-term.

In determining the total number of options to be granted to participants in the program in a given year, the Board of Directors, takes into account factors such as: (i) the total number of shares of common stock outstanding; (ii) the total number of shares of common stock issuable upon exercise of outstanding options; (iii) the total number of options which remain available for grant under the Company’s various stock option plans; (iv) the need to have an appropriate balance between currently paid and longer-term compensation, and between cash and equity compensation, and (v) the performance of the Company. Taking into account the factors described above, the Board determined not to grant options to the NEOs in 2024.

The Company presently maintains its 2022 Employee Stock Option Plan (the “2022 Employee Plan”), which provides for the issuance of incentive and nonqualified stock options having an exercise price equal to the fair market value of the Common Stock on the date the option is granted. Options granted under the 2022 Employee Plan vest 25% one day after the first anniversary of the grant date and 25% one day after each of the next three anniversaries. Under the terms of the 2022 Employee Plan, no option may be granted after the tenth anniversary of the effective date of the plan, i.e., after February 22, 2032. As of December 31, 2024, the number of shares available for grant under the 2022 Employee Plan was 186,375.

Options granted by the Company to employees historically have had a term of ten years. Commencing in July 2006, the Company has granted only non-qualified stock options to its employees. The Board presently anticipates that the remaining options which it may grant under the 2022 Employee Plan would be non-qualified stock options.

An optionee may exercise an option by delivering to the Company payment of the exercise price in cash, or, subject to the approval of the Company, by delivering of shares of the Company’s common stock, which

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would otherwise have been issuable to the optionee. The 2022 Employee Plan also provides for the cash settlement of option exercises, subject to the approval of the Company. Options granted under the 2022 Employee Plan are not transferable by the optionee other than by the will or by laws of descent and distribution. Each option is exercisable, during the lifetime of the optionee, only by the optionee. The 2022 Employee Plan is administered by our Board of Directors.

Employee Benefits

We generally do not provide perquisites or personal benefits to our executive officers. The Company provides standard core employee benefits, including medical and dental coverage, disability insurance and life insurance. The benefits available are the same for all executive officers, except as indicated below under “Summary Compensation Table.”

None of our executive officers participates in or has account balances in qualified or non-qualified defined benefit plans sponsored by the Company.

401(k) Plan

The Acme United Corporation 401(k) Profit Sharing Plan, is the primary retirement benefit offered to all United States employees of the Company and our executive officers are eligible to participate in the 401(k) plan on the same basis as our other employees. Participants may generally contribute to the Plan annually up to the maximum amount permitted under the Internal Revenue Code—$23,000 in 2024 ($30,500 for persons aged 50 and over). The Company provides to participants a matching contribution equal to fifty percent of the first six percent (6%) of the participant’s eligible compensation not to exceed the limit on eligible compensation imposed by the Internal Revenue Code – $350,000 in 2024. Participant and employer contributions are held and invested, pursuant to the participant’s instructions, by the plan’s trustee.

In summary, our Board of Directors determined the compensation of our executive officers for the year ended December 31, 2024, by applying our policies and practices regarding executive compensation, as described above, and after considering the recommendations of the Compensation Committee of the Board.

Summary Compensation Table

The following table sets forth information concerning the compensation of our NEOs (i.e., the Company’s Principal Executive Officer and each of the two other most highly compensated executive officers of the Company for the fiscal years ended December 31, 2024 and 2023).

Name and Principal Position |  | Year |  |  | Salary ($) |  |  | Bonus ($) (1) |  |  | Option Awards ($) (2) |  |  | All Other Compensation ($) |  |  | Total ($) |
Walter C. Johnsen |  |  | 2024 |  |  | $ | 1,024,684 |  |  | $ | 152,150 |  |  |  | — |  |  | $ | 54,787 | (3) |  | $ | 1,231,621 |
Chairman & Chief Executive Officer |  |  | 2023 |  |  | $ | 966,681 |  |  | $ | 519,188 |  |  | $ | 316,250 |  |  | $ | 42,487 | (3) |  | $ | 1,844,535 |
Brian S. Olschan |  |  | 2024 |  |  | $ | 888,903 |  |  | $ | 130,670 |  |  |  | — |  |  | $ | 12,887 | (4) |  | $ | 1,032,460 |
President & Chief Operating Officer |  |  | 2023 |  |  | $ | 838,597 |  |  | $ | 435,588 |  |  | $ | 253,000 |  |  | $ | 11,887 | (4) |  | $ | 1,539,061 |
Paul G. Driscoll |  |  | 2024 |  |  | $ | 537,409 |  |  | $ | 80,550 |  |  |  | — |  |  | $ | 12,887 | (4) |  | $ | 630,846 |
Vice President & Chief Financial Officer |  |  | 2023 |  |  | $ | 506,993 |  |  | $ | 260,294 |  |  | $ | 158,125 |  |  | $ | 11,887 | (4) |  | $ | 937,298 |

(1) | Consisted primarily of cash bonuses relating to the successful asset disposition of the Camillus and Cuda product lines on November 1, 2023.

(2) | Represents the aggregate fair value of stock options on grant date rather than an amount paid to or realized by the NEO. For information on valuation assumptions, refer to Note 11, “Stock Option Plans”, in the notes to the Company’s financial statements in its Annual Report on Form 10-K for the year ended December 31, 2024.

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Each option vests in four equal annual installments commencing one day after the first anniversary of the grant date and thereafter one day after each of the three succeeding annual anniversary dates of the grant date. The exercise price of each option is equal to 100 percent of the fair market value on the grant date. The fair market value was determined to be the closing price of the Common Stock on the day on which the option is granted.

The options granted to NEOs in 2023 had an exercise price of $30.47 per share. No options were granted to NEOs in 2024. The number of shares underlying the options granted to the NEOs in 2023 were as follows:

|  | Number of Shares Underlying Options
Name |  | 2023
Walter C. Johnsen |  | 25,000
Brian S. Olschan |  | 20,000
Paul G. Driscoll |  | 12,500

(3) | Consists of reimbursement of out-of-pocket health care expenses, payment of life insurance premiums and Company matching contribution to the Company’s 401(k) Profit Sharing Plan.

(4) | Consists of reimbursement of payments of life insurance premiums and Company matching contribution to the Company’s 401(k) Profit Sharing Plan.

Outstanding Equity Awards at Fiscal Year-End

The following table shows outstanding stock option awards classified as exercisable and unexercisable as of December 31, 2024 for each of the NEOs.

Name |  | Number of Securities Underlying Unexercised Options (#) Exercisable |  | Number of Securities Underlying Unexercised Options (#) Unexercisable |  | Option Exercise Price ($) |  | Option Expiration Date (1)
Walter C. Johnsen |  |  |  | 45,000 |  |  |  |  | — |  |  |  | $ | 21.49 |  |  |  |  | 8/3/26 |
|  |  |  | 60,000 |  |  |  |  | — |  |  |  | $ | 23.94 |  |  |  |  | 1/24/27 |
|  |  |  | 45,000 |  |  |  |  | — |  |  |  | $ | 24.92 |  |  |  |  | 10/16/27 |
|  |  |  | 13,500 |  |  |  |  | — |  |  |  | $ | 23.94 |  |  |  |  | 1/23/28 |
|  |  |  | 45,000 |  |  |  |  | — |  |  |  | $ | 22.66 |  |  |  |  | 8/8/28 |
|  |  |  | 25,000 |  |  |  |  | — |  |  |  | $ | 19.48 |  |  |  |  | 8/7/29 |
|  |  |  | 10,000 |  |  |  |  | — |  |  |  | $ | 24.06 |  |  |  |  | 1/21/30 |
|  |  |  | 45,000 |  |  |  |  | — |  |  |  | $ | 23.05 |  |  |  |  | 8/12/30 |
|  |  |  | 15,000 |  |  |  |  | 5,000 |  |  |  | $ | 32.64 |  |  |  |  | 1/26/31 |
|  |  |  | 33,750 |  |  |  |  | 11,250 |  |  |  | $ | 39.56 |  |  |  |  | 8/11/31 |
|  |  |  | 15,000 |  |  |  |  | 15,000 |  |  |  | $ | 29.35 |  |  |  |  | 8/3/32 |
|  |  |  | 6,250 |  |  |  |  | 18,750 |  |  |  | $ | 30.47 |  |  |  |  | 8/2/33 |
Brian S. Olschan |  |  |  | 45,000 |  |  |  |  | — |  |  |  | $ | 23.99 |  |  |  |  | 1/24/27 |
|  |  |  | 35,000 |  |  |  |  | — |  |  |  | $ | 24.92 |  |  |  |  | 10/16/27 |
|  |  |  | 9,200 |  |  |  |  | — |  |  |  | $ | 23.94 |  |  |  |  | 1/23/28 |
|  |  |  | 35,000 |  |  |  |  | — |  |  |  | $ | 22.66 |  |  |  |  | 8/8/28 |
|  |  |  | 20,000 |  |  |  |  | — |  |  |  | $ | 19.48 |  |  |  |  | 8/7/29 |
|  |  |  | 7,500 |  |  |  |  | — |  |  |  | $ | 24.06 |  |  |  |  | 1/21/30 |
|  |  |  | 35,000 |  |  |  |  | — |  |  |  | $ | 23.05 |  |  |  |  | 8/12/30 |
|  |  |  | 11,250 |  |  |  |  | 3,750 |  |  |  | $ | 32.64 |  |  |  |  | 1/26/31 |
|  |  |  | 26,250 |  |  |  |  | 8,750 |  |  |  | $ | 39.56 |  |  |  |  | 8/11/31 |
|  |  |  | 12,500 |  |  |  |  | 12,500 |  |  |  | $ | 29.35 |  |  |  |  | 8/3/32 |
|  |  |  | 5,000 |  |  |  |  | 15,000 |  |  |  | $ | 30.47 |  |  |  |  | 8/2/33 |
Paul G. Driscoll |  |  |  | 15,000 |  |  |  |  | — |  |  |  | $ | 21.49 |  |  |  |  | 8/3/26 |
|  |  |  | 15,000 |  |  |  |  | — |  |  |  | $ | 24.92 |  |  |  |  | 10/16/27 |
|  |  |  | 20,000 |  |  |  |  | — |  |  |  | $ | 22.66 |  |  |  |  | 8/8/28 |

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Name |  | Number of Securities Underlying Unexercised Options (#) Exercisable |  | Number of Securities Underlying Unexercised Options (#) Unexercisable |  | Option Exercise Price ($) |  | Option Expiration Date (1)
|  |  |  | 15,000 |  |  |  |  | — |  |  |  | $ | 19.48 |  |  |  |  | 8/7/29 |
|  |  |  | 2,500 |  |  |  |  | — |  |  |  | $ | 24.06 |  |  |  |  | 1/21/30 |
|  |  |  | 20,000 |  |  |  |  | — |  |  |  | $ | 23.05 |  |  |  |  | 8/12/30 |
|  |  |  | 7,500 |  |  |  |  | 2,500 |  |  |  | $ | 32.64 |  |  |  |  | 1/26/31 |
|  |  |  | 15,000 |  |  |  |  | 5,000 |  |  |  | $ | 39.56 |  |  |  |  | 8/11/31 |
|  |  |  | 7,500 |  |  |  |  | 7,500 |  |  |  | $ | 29.35 |  |  |  |  | 8/3/32 |
|  |  |  | 3,125 |  |  |  |  | 9,375 |  |  |  | $ | 30.47 |  |  |  |  | 8/2/33 |

(1) | Options vest in four equal parts beginning one day after the first anniversary of grant date and thereafter one day after each of the three succeeding annual anniversary dates of the grant date. Each option has a ten-year term.

We provide the following discussion of the timing of option awards in relation to the disclosure of material nonpublic information, as required by Item 402(x) of Regulation S-K.

During fiscal 2024, none of the Company’s Named Executive Officers was awarded options. The Company’s present policy is that it will not grant option awards during the four business days prior to or one business day after the filing of our periodic reports or the filing or furnishing of a Current Report on Form 8-K that discloses material nonpublic information.

The Company does not take material nonpublic information into account when determining the timing and terms of option awards. Further, the Company has not timed the disclosure of material nonpublic information to affect the value of executive compensation. Any coordination between a grant and the release of information that could be expected to affect such grant’s value is precluded by the predetermined schedule.

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Pay Versus Performance
The following table presents certain information regarding compensation paid to Acme United’s CEO and other NEOs, and certain measured financial performance for the three years ended December 31, 2024. The amounts shown below are calculated in accordance with Item 402(v) of Regulation S-K.

Year |  | Summary Compensation Table Total For PEO |  |  | Compensation Actually Paid to PEO |  |  | Average Summary Compensation Table Total for Non-PEO NEOs |  |  | Average Compensation Actually Paid to Non-PEO NEOs |  |  | Value of Initial Fixed $100 Investment Based On Total Shareholder Return |  |  | Net Income ($000’s) |
2024 |  | $ | 1,231,621 |  |  | $ | 1,065,571 (1) |  |  | $ | 831,653 (4) |  |  | $ | 723,375 |  |  | $ | 116 |  |  | $ | 10,022 |
2023 |  | $ | 1,844,535 |  |  | $ | 2,457,648 (2) |  |  | $ | 1,238,180 (5) |  |  | $ | 1,675,367 |  |  | $ | 131 |  |  | $ | 8,148 | (7)
2022 |  | $ | 1,279,627 |  |  | $ | 996,952 (3) |  |  | $ | 862,962 (6) |  |  | $ | 682,743 |  |  | $ | 67 |  |  | $ | 3,037 |

(1) | To calculate the compensation “actually paid” to PEO for 2024, the Option Awards value in the Summary Compensation Table (SCT) was deducted ($0) and an amount equal to $166,050 was deducted, representing the result of the stock calculations required by Item 402(v)(2)(iii)(C) of Regulation S-K.

(2) | To calculate the compensation “actually paid” to PEO for 2023, the Option Awards value in the Summary Compensation Table (SCT) was deducted ($316,250) and an amount equal to $929,365 was added, representing the result of the stock calculations required by Item 402(v)(2)(iii)(C) of Regulation S-K.

(3) | To calculate the compensation “actually paid” to PEO for 2022, the Option Awards value in the Summary Compensation Table (SCT) was deducted ($334,200) and an amount equal to $51,525 was added, representing the result of the stock calculations required by Item 402(v)(2)(iii)(C) of Regulation S-K.

(4) | To calculate the compensation “actually paid” to other NEOs for 2023, the Option Awards value in the Summary Compensation Table (SCT) was deducted ($0) and an amount equal to $108,278 was deducted, representing the result of the stock calculations required by Item 402(v)(2)(iii)(C) of Regulation S-K.

(5) | To calculate the compensation “actually paid” to other NEOs for 2023, the Option Awards value in the Summary Compensation Table (SCT) was deducted ($411,125) and an amount equal to $1,285,500 was added, representing the result of the stock calculations required by Item 402(v)(2)(iii)(C) of Regulation S-K.

(6) | To calculate the compensation “actually paid” to other NEOs for 2022, the Option Awards value in the Summary Compensation Table (SCT) was deducted ($445,600) and an amount equal to $85,163 was added, representing the result of the stock calculations required by Item 402(v)(2)(iii)(C) of Regulation S-K.

(7) | Excludes a net gain in the amount of $9.6 million related to the disposition of the Camillus and Cuda product lines, as previously reported.

In accordance with Item 402(v) of Regulation S-K, we are providing the following descriptions of the relationships between information presented in the Pay Versus Performance table and each of total shareholder return (“TSR”) and net income.
We do not utilize TSR directly in our executive compensation program although there is a correlation between compensation actually paid and both TSR. However, we do utilize several other performance measures, including budgeted net income, to align executive compensation with our performance. As described in more detail above in the section “Executive Compensation – Compensation Program for Executive Officers,” part of the compensation our NEOs are eligible to receive consists of annual performance-based cash bonus awards that are designed to provide appropriate incentives to our executives to achieve defined annual performance objectives, including budgeted net income growth, and to reward our executives for individual and Company achievement towards these goals, subject to certain employment criteria.
Additionally, stock options are an integral part of our executive compensation program. Although not directly tied to TSR or net income, stock options provide value only if the market price of our common stock increases, and if the executive officer continues in our employment over the vesting period. These stock
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Table of Contents
option awards strongly align our executive officers’ interests with those of our stockholders by providing a continuing financial incentive to maximize long-term value for our stockholders and by encouraging our executive officers to continue in our employment for the long-term.
The following graph illustrates the relationship during 2022-2024 of the Compensation Actually Paid for our CEO and other NEOs as calculated pursuant to SEC rules to our TSR.
The following graph illustrates the relationship during 2022-2024 of the Compensation Actually Paid for our CEO and other NEOs as calculated pursuant to SEC rules to our Net Income.
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Change in Control Plan

The Company’s Change in Control Plan (successor to the Salary Continuation Plan) covers officers of the Company at the level of Corporate Vice President or above, who are designated from time to time by the Board of Directors of the Company as a participant in the plan. The plan participants presently consist of three individuals: Walter C. Johnsen, Brian S. Olschan and Paul G. Driscoll. The plan is designed to retain key employees and provide for continuity of management in the event of a threatened, pending or actual change in control of the Company. A participant would receive payment under the plan if there is a change in control of the Company and, within one year after such change in control, the participant voluntarily or involuntarily separates from service of the Company for any reason whatsoever.

A change in control of the Company is deemed to occur when any one person, or more than one person acting as a group, (i) acquires ownership of stock of the Company that, together with stock held by such person or group, constitutes more than 50 percent (50%) of the total fair market value or total voting power of the stock of the Company; or (ii) acquires assets from the Company that have a total gross fair market value equal to or more than 50 percent (50%) of the total gross fair market value of all of the assets of the Company immediately before such acquisition or acquisitions. For this purpose, the gross fair market value of assets excludes liabilities associated with such assets.

The compensation and benefits which would be provided to a participant in the plan consist of the following:

• |  | Monthly salary at the rate being paid on the date of the change in control multiplied by the number of months payable, as described below;

• |  | Average monthly incentive bonus payments for the three taxable years immediately prior to the change in control multiplied by the number of months payable, as described below; and

• |  | Medical, life and other insurance in effect on the date of disposition to continue into the future for the number of months that compensation is payable.

In addition, the plan imposes a limit on the total amounts and benefits which may be paid to a participant in the plan. The plan provides that, if any amount or benefit to be paid or provided to a participant would be deemed an “excess parachute payment” (within the meaning of Section 280G of the Internal Revenue Code), then the payment to be paid or the benefits to be provided to the participant will be reduced to the minimum extent necessary so that all potential “parachute payments” to the participant will not exceed 2.99 times the participant’s “base amount” (as also defined in Section 280G).

Payment of the first two items would be made in a lump sum, no later than thirty (30) days after the participant separates from service. However, payments to be made to a participant who is a key employee (as defined in the plan, based on certain levels of compensation or stock ownership in the Company), must be deferred for six months.

A director of the Company who is also an officer of the Company at the level of Executive Vice President or above (presently Messrs. Johnsen and Olschan) would be entitled to the value of thirty-six (36) months’ compensation and benefits. Officers at the level of Senior Vice President and Vice President (presently, Mr. Driscoll) would be entitled to receive the value of twenty-four (24) months’ compensation and benefits. All of the participants in the plan are presently “key employees,” as described above.

Severance Pay Plan

The Severance Pay Plan covers officers of the Company employed in the United States at the level of Corporate Vice President or above. The plan is designed to enable the Company to attract and retain key employees. This plan covers Walter C. Johnsen, Brian S. Olschan and Paul G. Driscoll. A covered officer would receive payments under the plan if one of the following triggering events occurs:

• |  | involuntary termination for any reason other than gross misconduct;

• |  | death;

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• |  | reduction of responsibility, status or compensation; or

• |  | transfer to a location unreasonably distant from his or her current location.

This plan would only apply if the Change in Control Plan would not apply. Payment under this plan, except in the event of termination by death, would be equivalent to one month’s salary multiplied by each year of service to the Company based upon the level of his or her compensation in effect immediately preceding such termination. The plan sets out a minimum and maximum number of months’ compensation payable to each such employee upon such severance. The plan would also provide death benefits to covered officers’ beneficiaries.

A Director of the Company who is also an Officer of the Company at the level of Executive Vice President or above (presently, Messrs. Johnsen and Olschan) would be entitled to a minimum of nine (9) months’ compensation and a maximum of thirty (30) months’ compensation. In the event of such officer’s death, his or her beneficiaries would be entitled to nine (9) months’ compensation. Officers at the level of Senior Vice President or Vice President (presently, Mr. Driscoll) would be entitled to a minimum of six (6) months’ compensation and a maximum of eighteen (18) months’ compensation. In the event of such officer’s death, his or her beneficiaries would be entitled to six (6) months’ compensation. Payments would be made in a single lump sum.

Equity Compensation Plan Information

The following table sets forth information regarding compensation payable under the Company’s equity compensation plans (the 2005 and 2017 Non-Salaried Director Stock Option Plans and the 2012 and 2022 Employee Plans) in effect as of December 31, 2024. The Company’s shareholders have approved each equity compensation plan.

Plan Category |  | Number of securities to be issued upon exercise of outstanding options, warrants and rights (a) |  | Weighted-average exercise price of outstanding options, warrants and rights (b) |  | Number of securities remaining available for future issuance under equity compensation plans, (excluding securities reflected in column (a)) (c)
Equity compensation plans approved by security holders |  | 1,403,090 |  | $27.82 |  | 223,875
Equity compensation plans not approved by security holders |  | -0- |  | -0- |  | -0-
Total |  | 1,403,090 |  | $27.82 |  | 223,875

DIRECTOR COMPENSATION

Cash Compensation

As described below, in 2024, the Company paid as compensation to non-employee directors cash consisting of annual fees and fees for Board and committee meetings attended. Each director who chaired a committee received additional compensation to compensate for the additional responsibility and effort associated with the director’s respective position. These fees consisted of:

• |  | an annual fee of $47,790, payable quarterly;

• |  | $2,735 for each Board meeting attended;

• |  | $1,245 for each committee meeting attended;

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• |  | $2,370 to committee chairpersons for each committee meeting conducted; and

• |  | an annual fee of $5,765 to the Chairperson of the Audit Committee.

The Company also provided reimbursement to each director for customary and usual travel expenses incurred in connection with attendance at Board and committee meetings.

In addition, in 2023 and 2024, the Company paid cash to non-employee directors in lieu of granting stock options as disclosed in the table below under Stock Options and related footnote 1.

Stock Options

Under the 2017 Non-Salaried Director Stock Option Plan (the “2017 Director Plan”), each incumbent non-employee director re-elected to the Board of Directors receives an annual option grant to purchase up to 5,000 shares of Common Stock. The Board of Directors has the authority to increase or decrease the number of shares of Common Stock which are the subject of the annual or initial option grants to directors.

Under the 2017 Director Plan, each new director, upon becoming a member of the Board of Directors will receive an initial option to purchase 5,000 shares of Common Stock. These options would vest as follows: 25% on the day after the grant date; 25% one day after the first year anniversary of the grant date; 25% one day after the second year anniversary of the grant date; and 25% one day after the third year anniversary of the grant date. Mr. Conway received options to purchase 5,000 shares in 2024.

In lieu of the customary annual grant of 5,000 options to the non-salaried directors in 2024, the Company, instead, granted an option to purchase 2,500 shares and paid a cash fee to each of the non-salaried directors in lieu of an annual option grant, as described below.

The 2017 Director Plan expires on February 23, 2027, and no options can be granted under the 2017 Director Plan after that date. However, each option outstanding under the 2017 Director Plan on February 23, 2027 would extend beyond that date for the remainder of the term of such option.

The following table discloses the cash, equity awards and other compensation earned, paid or awarded, as the case may be, to each of the Company’s non-employee directors during the fiscal year ended December 31, 2024.

Name |  | Fees Earned or Paid in Cash |  |  | Option Awards (1) |  |  | Additional Cash Paid (2) |  |  | Total |
Brian K. Barker |  | $ | 74,650 |  |  | $ | 42,900 |  |  | $ | 50,250 |  |  | $ | 167,800 |
Paul J. Conway |  | $ | 67,935 |  |  | $ | 85,800 |  |  |  | — |  |  | $ | 153,735 |
Rex L. Davidson |  | $ | 79,360 |  |  | $ | 42,900 |  |  | $ | 50,250 |  |  | $ | 172,780 |
Richmond Y. Holden, Jr. |  | $ | 84,130 |  |  | $ | 42,900 |  |  | $ | 50,250 |  |  | $ | 177,280 |
Susan H. Murphy |  | $ | 73,405 |  |  | $ | 42,900 |  |  | $ | 50,250 |  |  | $ | 166,555 |
Stevenson E. Ward III |  | $ | 86,160 |  |  | $ | 42,900 |  |  | $ | 50,250 |  |  | $ | 179,310 |

(1) | Represents the aggregate fair value of stock options on grant date rather than an amount paid to or realized by the director. For information on the valuation assumptions, refer to the Note 11, “Stock Option Plans”, in the notes to the Company’s financial statements in its Annual Report on Form 10-K for the year ended December 31, 2024.

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The exercise price of each option is equal to 100 percent of fair market value on the date of grant. The fair market value was determined to be the average price of the Common Stock on the trading day of the grant date. Each option had an exercise price of $38.26 per share, and became exercisable in full one day after the date of grant.

(2) | The amount paid was equal to the aggregate fair value of options to purchase 2,500 shares of common stock on July 31, 2024 and was paid in cash to the director partially in lieu of an annual option grant under the 2017 Director Plan. For information on the valuation assumptions, refer to the Note 11, “Stock Option Plans,” in the notes to the Company’s financial statements in its Annual Report on Form 10-K for the year ended December 31, 2024.

The following table shows the aggregate number of outstanding options held by each non-employee director as of December 31, 2024.

Name |  | Aggregate Options Outstanding as of December 31, 2024
Brian K. Barker |  |  |  | 16,500 |
Paul J. Conway |  |  |  | 5,000 |
Rex L. Davidson |  |  |  | 31,500 |
Richmond Y. Holden, Jr. |  |  |  | 19,000 |
Susan H. Murphy |  |  |  | 31,500 |
Stevenson E. Ward III |  |  |  | — |

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Report of the Audit Committee

The Audit Committee oversees the Company’s financial reporting process on behalf of the Board of Directors. The Audit Committee has reviewed and discussed the Company’s audited consolidated financial statements for the fiscal year ended December 31, 2024, with management and with representatives of Marcum LLP, the Company’s independent registered public accounting firm, including discussions of the presentation and integrity of the Company’s financial statements. Management represented to the Audit Committee that the Company’s financial statements were prepared in accordance with accounting principles generally accepted in the United States.

Management has the primary responsibility for the financial statements of the Company and the Company’s financial reporting process, including the system of internal controls. The Audit Committee does not provide any expert or special assurance as to the Company’s financial statements. Marcum LLP is responsible for performing an independent audit of the Company’s financial statements and expressing an opinion on the conformity of the Company’s financial statements with generally accepted accounting principles in the United States. Marcum LLP also is responsible for auditing the effectiveness of the Company’s internal control over financial reporting and issuing a report thereon. The Audit Committee does not provide any professional certification as to Marcum LLP ’s work product.

As required by the standards of the Public Company Accounting Oversight Board (“PCAOB”), the Audit Committee has discussed with representatives of Marcum LLP the matters required to be discussed under applicable PCAOB standards. The Audit Committee has received and reviewed the written disclosures and letters from Marcum LLP required by applicable requirements of the PCAOB regarding the independent accountant’s communications with the Audit Committee concerning independence, and has discussed with Marcum LLP the independence of Marcum LLP from the Company. The Audit Committee also considered whether the provision of non-audit services by Marcum LLP to the Company is compatible with Marcum LLP ’s independence. Based on these discussions and disclosures, the Audit Committee concluded that Marcum LLP is independent from the Company and its management.

The Audit Committee discussed with the Company’s independent auditors the overall scope and plan for their respective audits. The Audit Committee met with the independent auditors, with and without management present, to discuss the results of their examinations, their evaluations of the Company’s internal controls, and the overall quality of the Company’s financial reporting.

Based on the reviews and discussions referred to above, the Audit Committee recommended to the Board of Directors that the Company’s audited consolidated financial statements for the year ended December 31, 2024, be included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 for filing with the Securities and Exchange Commission.

Stevenson E. Ward, III, Chair

Richmond Y. Holden, Jr., Member

Rex L. Davidson, Member

Brian K. Barker, Member

Paul J. Conway, Member

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Transactions with Related Persons

The term “related person” includes any executive officer of the Company, any director or nominee for election as director, any security holder holding more than 5% of the Common Stock or any immediate family member of any of the foregoing persons.

Policy

As adopted by the Board of Directors, the charter of the Audit Committee requires that related person transactions must be reviewed and approved by the Audit Committee of the Board, which consists solely of independent directors. This requirement applies to any such transaction and is not limited to transactions which meet the minimum threshold for disclosure in the proxy statement under the relevant rules under the Exchange Act (generally, in 2024, with respect to smaller reporting companies, transactions which involve an amount equal to the lesser of $120,000 or one percent of the average of the Company’s total assets at year-end for the last two completed fiscal years, and in which a related person has a direct or indirect material interest).

Procedures

Management or the affected director or executive officer will bring the transaction to the attention of the Audit Committee. The transaction must be approved in advance whenever practicable, and if not practicable, must be reviewed as promptly as practicable. Although the Audit Committee has not adopted formal procedures for the review and approval of transactions with related persons, the Audit Committee will approve the transaction only if it determines that it is in the best interests of the Company.

If the Audit Committee were to approve a related party transaction, the Audit Committee would periodically monitor the transaction to ensure that there are no changed circumstances that would render it advisable for the Company to amend or terminate the transaction.

There were no related person transactions with the Company since January 1, 2023.

PROPOSAL 2

ADOPTION OF A NON-BINDING RESOLUTION TO APPROVE THE COMPENSATION OF OUR NAMED EXECUTIVE OFFICERS

In accordance with the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) enacted in 2010 and pursuant to Section 14A of the Exchange Act, the Company is again providing shareholders with the opportunity to vote on a non-binding, advisory proposal, commonly known as a “say-on-pay” proposal, to approve the compensation of the Company’s NEOs as disclosed above in this proxy statement under “Executive Compensation.” The shareholders last voted on such a proposal at the Company’s Annual Meeting of Shareholders in 2024. This proposal gives our shareholders an opportunity to express their views on the overall compensation of the Company’s NEOs, but is not intended to address any specific item of compensation. In making a voting decision, shareholders are encouraged to review the discussion of the Company’s compensation policies and decisions regarding its NEOs that appears earlier in this proxy statement under “Executive Compensation” including the compensation tables and related narrative disclosure.

The executive officers named in the summary compensation table and deemed to be “named executive officers” are Walter C. Johnsen, Brian S. Olschan and Paul G. Driscoll. The Company’s executive compensation program consists of four components: base salary, a cash incentive bonus award; longer-term incentive equity awards (consisting of stock option awards); and retirement benefits and other benefits described in detail in the Section entitled “Executive Compensation” that appears earlier in this Proxy Statement. The program uses a balance of short- and long-term performance metrics to encourage the efficient management of our business and minimize excessive risk-taking. It ties a significant portion of executive pay to Company performance over a multi-year period. The compensation paid to the Company’s executive officers is intended to align their interests with the long-term interests of the Company’s shareholders and is based on a pay-for-performance

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philosophy. It is straightforward, consisting principally of salary, which must be competitive to retain the skills and experience of excellent employees, annual bonus to reward strong performance, and equity compensation to encourage long-term commitment and team performance. Not all elements of our compensation package may be provided every year, depending on the performance of the Company and the executive, the Company’ resources and other factors deemed relevant by the Board of Directors.

We believe that our executive compensation program, with our balance of base salary, performance-based bonuses and multi-year vesting equity awards, encourages and rewards sustained performance that is aligned with long-term shareholder interests.

The Board of Directors believes that the compensation given to our NEOs for 2024 helped to achieve the overall objective of enhancing value for our shareholders.

The vote solicited by this proposal is advisory and its outcome will not be binding on the Board of Directors nor require the Board of Directors to take any action. Moreover, the outcome of the vote will not be construed as overruling any decision of the Board of Directors, or creating or implying any additional fiduciary duty of the Board of Directors. However, the Board of Directors expects to take into account the outcome of this vote when considering future executive compensation arrangements recommended by the Compensation Committee for the Company’s executive officers.

The Board of Directors strongly supports our executive compensation programs and asks shareholders to vote on the following advisory resolution:

RESOLVED, that compensation paid to the Company’s named executive officers for the year ended December 31, 2024, as disclosed in this Proxy Statement pursuant to Item 402 of Regulation S-K, including the compensation tables and the related narrative discussion, is hereby approved.

Vote Required

The approval of Proposal 2 on an advisory basis requires the affirmative vote of a majority of the votes cast by the shareholders via the Internet or by proxy.

The Board of Directors unanimously recommends a vote FOR the approval of the compensation of our named executive officers, as disclosed in this Proxy Statement.

PROPOSAL 3

ADVISORY VOTE ON THE FREQUENCY OF THE NON-BINDING RESOLUTION TO APPROVE THE COMPENSATION OF OUR NAMED EXECUTIVE OFFICERS

Under the Dodd-Frank Act the Company is required, not less frequently than once every six years, to provide a proxy statement for an annual meeting of shareholders for which the proxy solicitation rules of the SEC require compensation disclosure must also include a separate proposal subject to shareholder vote to determine whether the shareholder vote to approve the compensation of NEOs will occur every one, two or three years.

Accordingly, we are seeking an advisory shareholder vote regarding whether the non-binding resolution to approve the compensation of our NEOs should occur every one, two or three years.

In making a voting decision, shareholders are urged to review the Company’s compensation policies and decisions regarding its named executive officers contained in the section entitled “Executive Compensation” that appears earlier in this Proxy Statement as well as the information provided under Proposal 2 above. Future votes, regardless of frequency, would be substantially similar in nature to the vote requested under Proposal 2 in this proxy statement.

The Board of Directors believes that an advisory shareholder vote to approve the compensation of our NEOs should occur annually. We believe that it is important to give our shareholders the opportunity to provide us

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with their input on our philosophy, policies and practices regarding executive compensation as disclosed each year in the Company’s annual proxy statement. The Board believes that annual votes by our shareholders will enhance our communication with and responsiveness to our shareholders. An annual vote would provide the additional benefits of tying the advisory vote on executive compensation to the current year’s proxy statement compensation disclosure and avoiding the potential for confusion that exists with a biennial or triennial vote as to which year’s compensation shareholders are being asked to evaluate and vote on.

Based on the foregoing considerations, the Board of Directors asks that you support a frequency of every year for future non-binding resolutions on compensation of our named executive officers.

The advisory vote on this proposal is not binding on the Company or the Board of Directors and cannot be construed as overruling any decision made by the Compensation Committee or Board of Directors. However, the Compensation Committee and the Board of Directors will review the results on the advisory vote and take them into consideration when making future decisions regarding the frequency of submitting to shareholders of the Company the non-binding resolution to approve the compensation of our named executive officers.

You have four choices as to how to vote on this proposal. You may indicate the voting frequency you recommend by choosing the option of one year, two years, or three years, or you may abstain from voting when you mark your proxy card in response to this proposal.

Vote Required

A plurality of the votes cast via the Internet or by proxy at the Annual Meeting is required to select the recommended frequency of future votes on executive compensation.

The Board of Directors recommends that you vote to hold the non-binding vote on executive compensation every year.

PROPOSAL 4

RATIFICATION OF THE APPOINTMENT OF CBIZ CPAs, P.C. AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE FISCAL YEAR ENDING DECEMBER 31, 2025

The Audit Committee of the Board of Directors has appointed CBIZ CPAs, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2025. On November 1, 2024, CBIZ CPAs P.C. acquired the attest business of Marcum LLP, which was the Company’s prior independent registered public accounting firm.

Representatives of CBIZ CPAs, P.C. will be present at the Annual Meeting and will have the opportunity to make a statement if they desire to do so. They will also be available to respond to appropriate questions.

The Audit Committee is not aware of any disagreements between management and our current independent registered public accounting firm, CBIZ CPAs, P.C., regarding accounting principles and their application or otherwise.

Audit Committee Pre-Approval of Independent Registered Public Accounting Firm Services

The Audit Committee pre-approves all audit and permissible non-audit services provided by the independent registered public accounting firm. These services may include audit services, audit-related services, tax services and other services. The Audit Committee has adopted policies and procedures for the pre-approval of services provided by the independent registered public accounting firm. The policies and procedures provide that management and the independent registered public accounting firm jointly submit

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to the Audit Committee a schedule of audit and non-audit services for approval as part of the annual plan for each year. In addition, the policies and procedures provide that the Audit Committee may also pre-approve particular services not in the annual plan on a case-by-case basis. For each proposed service, management and the independent registered public accounting firm must provide a detailed description of the service and the projected fees and costs (or a range of such fees and costs) for the service.

Fees Paid to Independent Registered Public Accounting Firm

Set forth below is a description of the fees for professional audit services rendered by Marcum LLP, for the audit of our annual consolidated financial statements for the fiscal year indicated and review of our interim consolidated financial statements, and fees for other services rendered by Marcum LLP.

Fee Category |  | 2024
Audit Fees |  | $ 753,800
Audit Related Fees |  | 25,500
Tax Fees |  | 44,100
Total Fees |  | $ 823,400

Audit Fees. Audit fees consist of fees for the annual audit of the Company’s financial statements, including the audit of internal control over financial reporting, and the reviews of the interim financial statements included in our quarterly reports on Form 10-Q.

Audit Related Fees. These fees were for the audit of the Acme United Corporation 401(k) Profit Sharing Plan and services rendered in connection with the filing of registration statements related to the Company’s stock option plans.

Tax Fees. Tax services included tax compliance, tax consulting, and tax planning.

The Audit Committee has determined that the provision of non-audit services described above was compatible with maintaining Marcum LLP ’s independence.

Vote Required

The ratification of the appointment by our Audit Committee of CBIZ CPAs, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2025 requires the affirmative vote of a majority of the shares of Common Stock of the Company voting via the Internet or by proxy on such ratification. Although shareholder approval of the appointment is not required by law and is not binding on the Audit Committee, we nonetheless are seeking shareholder ratification because we believe it to be a matter of good corporate practice. If shareholders do not ratify the selection of CBIZ CPAs, P.C., the Audit Committee will reconsider whether to retain CBIZ CPAs, P.C., but may retain such independent registered public accounting firm.

The Board of Directors recommends a vote FOR the ratification of our independent registered public accounting firm for the fiscal year ending December 31, 2025.

SUBMISSION OF SHAREHOLDER PROPOSALS FOR THE 2026 ANNUAL MEETING

If you intend to present a proposal at our 2026 Annual Meeting, you must submit it to us no later than November 27, 2025, to receive consideration for inclusion in our 2026 proxy materials. If you intend to present a proposal at our 2026 Annual Meeting that is not to be included in our 2026 proxy materials, you must send the proposal to us in writing by February 17, 2026. Any such proposal should be sent to the Secretary of the Company at 1 Waterview Drive, Shelton, Connecticut, 06484.

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OTHER BUSINESS

Management does not know of any matters to be presented, other than those described herein, at the Annual Meeting. If any other business should come before the meeting, the persons named in the enclosed proxy will have discretionary authority to vote all proxies in accordance with their best judgment.

By Order of the Board of Directors,

Paul G. Driscoll, Vice President and

Chief Financial Officer, Secretary and Treasurer

March 24, 2025

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ACME UNITED CORPORATION 1 WATERVIEW DR SHELTON, CT 06484 ATTN: PAUL DRISCOLL |  |  |  | VOTE BY INTERNET - www.proxyvote.com or scan the QR Barcode above Before The Meeting - Go to www.proxyvote.com Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time the day before the meeting date. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form. During The Meeting - Go to www.virtualshareholdermeeting.com/ACU2025 You may attend the meeting via the Internet and vote during the meeting. Have the information that is printed in the box marked by the arrow available and follow the instructions. VOTE BY PHONE - 1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions up until 11:59 p.m. Eastern Time the day before the meeting date. Have your proxy card in hand when you call and then follow the instructions. VOTE BY MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS:

KEEP THIS PORTION FOR YOUR RECORDS

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DETACH AND RETURN THIS PORTION ONLY

THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED.

|  |  |  |  |  |  |  | For All |  | Withhold All |  | For All Except |  | To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the number(s) of the nominee(s) on the line below. |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | The Board of Directors recommends you vote FOR the following: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  | ☐ |  | ☐ |  | ☐ |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | 1.Election of Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Nominees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | 01) Walter C. Johnsen     02) Richmond Y. Holden, Jr.   03) Brian S. Olschan     04) Susan H. Murphy   05) Rex L. Davidson |  |  |  |
|  |  |  |  |  | 06) Brian K. Barker        07) Paul J. Conway |  |  |  |
|  |  |  |  |  | The Board of Directors recommends you vote FOR the following proposal: |  |  |  | For |  | Against |  | Abstain |  |
|  |  |  |  |  | 2.Approval, by non-binding advisory vote, of the compensation of the named executive officers of the Company as described in the Proxy Statement. |  |  |  | ☐ |  | ☐ |  | ☐ |  |
|  |  |  |  |  | The Board of Directors recommends you vote 1 YEAR on the following proposal: |  | 1 year |  | 2 years |  | 3 years |  | Abstain |  |
|  |  |  |  |  | 3.Approval, by non-binding advisory vote, on the Frequency of Executive Compensation voting. |  | ☐ |  | ☐ |  | ☐ |  | ☐ |  |
|  |  |  |  |  | The Board of Directors recommends you vote FOR the following proposal: |  |  |  | For |  | Against |  | Abstain |  |
|  |  |  |  |  | 4.Ratification of the appointment of CBIZ CPAs, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2025. |  |  |  | ☐ |  | ☐ |  | ☐ |  |
|  |  |  |  |  | NOTE: In their discretion, the proxies are authorized to vote on such other business as may properly come before the meeting or any adjournment thereof. |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name by authorized officer. |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  | Signature [PLEASE SIGN WITHIN BOX] |  |  |  |  |  | Date |  |  |  | Signature (Joint Owners) |  | Date |  |  |  |  |  |  |  |  |  |

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting:

The Notice and Proxy Statement and Form 10-K are available at www.proxyvote.com

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|  | PROXY ACME UNITED CORPORATION THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF ACME UNITED CORPORATION FOR THE ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON APRIL 21, 2025 The undersigned hereby appoints Walter C. Johnsen and Susan H. Murphy, and each of them, with full powers of substitution, to act as attorneys and proxies of the undersigned, to vote all shares of the Common Stock of ACME UNITED CORPORATION, held of record by the undersigned on March 5, 2025, at the Annual Meeting of Shareholders, to be held via live webcast at www.virtualshareholdermeeting.com/ACU2025 on Monday, April 21, 2025, at 11:00 a.m. and at any adjournment(s) or postponement(s) thereof, with all the powers the undersigned would have if personally present. Without limiting the general authorization hereby given, said proxies are, and each of them hereby is, instructed to vote or act as follows on the reverse side hereof on Proposals 1, 2, 3, and 4. In their discretion, the proxies are authorized to vote upon such other matters, if any, as may properly come before the Annual Meeting. The undersigned acknowledges receipt of the Company’s Notice of Annual Meeting of Shareholders, related Proxy Statement and 2024 Annual Report to Shareholders.
|  | Continued and to be signed on reverse side