Filed by: Commerce Bancshares, Inc.
Pursuant to Rule 425 of the Securities Act of 1933
and deemed filed pursuant to Rule 14a-12
of the Securities Exchange Act of 1934
Subject Company: FineMark Holdings, Inc.
Commission File No.: 001-36502

This filing relates to the proposed transaction between Commerce Bancshares, Inc. (“Commerce”) and FineMark Holdings, Inc. (“FineMark”) pursuant to the Agreement and Plan of Merger, dated as of June 16, 2025, by and among Commerce, CBI-Kansas, Inc. and FineMark.

EMPLOYEE EMAIL

On June 16, 2025, a communication in the form set forth below was distributed by Commerce to its employees.

Subject: Important M&A Announcement: Strategic Partnership with FineMark

Dear Commerce Team,

I’m happy to share some exciting news marking a new growth chapter in our 160-year history.

Today, we announced our plans to acquire FineMark, a respected and well-established bank and trust company known for its personalized client relationships, differentiated wealth capabilities, disciplined risk management and strong presence in affluent markets. Founded in 2007 and headquartered in Fort Myers, Florida, FineMark has around $4 billion in total assets and manages nearly $8 billion in client wealth assets, serving high-net-worth individuals and families. This thoughtfully considered partnership will support meaningful growth in our wealth management business and expand our presence in attractive new markets.

Shared Values and Cultural Alignment

For Commerce, this is more than an acquisition. It represents a strategic milestone for both companies, built on years of relationship-building and grounded in mutual trust and shared values. FineMark is a natural culture fit with a history of strong asset quality, a client-centric approach to banking and wealth management, and a deep commitment to the communities it serves.

FineMark’s experienced team of ~300 team members serve clients across 13 offices in Florida, Arizona and South Carolina, offering private banking, investment management, trust and estate planning, and lending services. Their relationship-based model and long-standing reputation for high-touch service closely mirror our own.

From our first conversations more than five years ago, it was clear our values align — prioritizing integrity, customer relationships, and a long-term view. Like Commerce, FineMark emphasizes the importance of culture — a culture rooted in people, communication and collaboration.

What makes this partnership so compelling is how complementary our strengths are. FineMark brings new capabilities, specialized services for niche client segments, and extended market reach. Commerce adds scale and depth with resources, capital, operational infrastructure, regulatory experience, and long-term stability. With very little overlap in geography or deposit share, the combined organization will have $36 billion in total assets and $84 billion in wealth assets under administration. Together, we are well positioned to accelerate growth, extend our reach in high-opportunity markets and deliver even more value to clients, shareholders and communities.

What’s Next?

In the near term, FineMark will continue to operate as they do today as a separate, independent company to ensure minimal disruption to client relationships and to maintain continuity for their team members and partners. The client and team member experience will remain a top priority throughout this process.

The deal is expected to close Jan. 1, 2026, pending customary regulatory approvals and the approval of FineMark shareholders. We will continue to work closely with FineMark to complete the necessary steps and prepare for integration. Once the acquisition is finalized, the FineMark team will become part of Commerce Trust.

We know integration will take some time, but we’re committed to a collaborative, transparent and practical approach. We’ll share updates as information becomes available. Team members playing a key role in the integration will receive additional details in the coming weeks.

You can read more in our joint press release here, which outlines the merger and our shared vision. If you receive questions from clients or external contacts, this is a reference document that can be helpful.

We will be proud to welcome FineMark’s team, clients and shareholders to Commerce! This partnership adds an exciting new chapter in our story — one made possible by the strong foundation and culture we’ve built together. Your dedication and the contributions you make every day have enabled us to be in this position and to grow in such a meaningful way.

Thank you for all you do to make Commerce successful. I’m grateful to be on this journey with you and I look forward to what we’ll accomplish together in our next chapter.

With gratitude,

John

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This communication may contain forward-looking statements, including, but not limited to, certain plans, expectations, goals, projections, and statements about the benefits of the proposed business combination transaction between Commerce and FineMark (the “Proposed Transaction”), the plans, objectives, expectations and intentions of Commerce and FineMark, the expected timing of completion of the Proposed Transaction, and other statements that are not historical facts. All statements other than statements of historical fact, including statements about beliefs and expectations, are forward-looking statements. Forward-looking statements may be identified by words such as “may,” “will,” “should,” “could,” “would,” “plan,” “potential,” “estimate,” “project,” “believe,” “intend,” “anticipate,” “expect,” “target” and similar expressions. Forward-looking statements, by their nature, are subject to risks and uncertainties. There are many factors that could cause actual results to differ materially from expected results described in the forward-looking statements. The forward-looking statements are intended to be subject to the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995.

Factors relating to the Proposed Transaction that could cause or contribute to actual results differing materially from those contained or implied in forward-looking statements or historical performance include, in addition to those factors identified elsewhere in this communication the occurrence of any event, change or other circumstances that could give rise to the right of Commerce or FineMark to terminate the definitive merger agreement governing the terms and conditions of the Proposed Transaction; the outcome of any legal proceedings that may be instituted against Commerce or FineMark; the possibility that revenue or expense synergies or the other expected benefits of the Proposed Transaction may not fully materialize or may take longer to realize than expected, or may be more costly to achieve than anticipated, including as a result of the impact of, or problems arising from, the integration of the two companies, the strength of the economy and competitive factors in the areas where Commerce and FineMark do business, or other unexpected factors or events; the possibility that the Proposed Transaction may not be completed when expected or at all because required regulatory, shareholder or other approvals or other conditions to closing are not received or satisfied on a timely basis or at all (and the risk that such approvals may result in the imposition of conditions that could adversely affect Commerce or FineMark or the expected benefits of the Proposed Transaction); the risk that Commerce is unable to successfully and promptly implement its integration strategies; reputational risks and potential adverse reactions from or changes to the relationships with the companies’ customers, employees or other business partners, including resulting from the announcement or the completion of the Proposed Transaction; the dilution caused by Commerce’s issuance of common stock in connection with the Proposed Transaction; diversion of management’s attention and time from ongoing business operations and other opportunities on matters relating to the Proposed Transaction; and other factors that may affect the future results of Commerce and FineMark, including continued pressures and uncertainties within the banking industry and Commerce’s and FineMark’s markets, including changes in interest rates and deposit amounts and composition, adverse developments in the level and direction of loan delinquencies, charge-offs, and estimates of the adequacy of the allowance for loan losses, increased competitive pressures, asset and credit quality deterioration, the impact of proposed or imposed tariffs by the U.S. government or retaliatory tariffs proposed or imposed by U.S. trading partners that could have an adverse impact on customers or any recession or slowdown in economic growth particularly in the markets in which Commerce or FineMark operate, and legislative, regulatory, and fiscal policy changes and related compliance costs.

These factors are not necessarily all of the factors that could cause Commerce’s or FineMark’s actual results, performance, or achievements to differ materially from those expressed in or implied by any of the forward-looking statements. Other unknown or unpredictable factors also could harm Commerce’s or FineMark’s results.

Further information regarding Commerce and factors that could affect the forward-looking statements contained herein can be found in Commerce’s Annual Report on Form 10-K for the year ended December 31, 2024, which is accessible on the Securities and Exchange Commission’s (the “SEC”) website at www.sec.gov and at Investor.Commercebank.com, and in other documents Commerce files with the SEC. Information on these websites is not part of this document.

All forward-looking statements attributable to Commerce or FineMark, or persons acting on Commerce’s or FineMark’s behalf, are expressly qualified in their entirety by the cautionary statements set forth above. Forward-looking statements speak only as of the date they are made and Commerce and FineMark do not undertake or assume any obligation to update publicly any of these statements to reflect actual results, new information or future events, changes in assumptions, or changes in other factors affecting forward-looking statements, except to the extent required by applicable law. If Commerce or FineMark update one or more forward-looking statements, no inference should be drawn that Commerce or FineMark will make additional updates with respect to those or other forward-looking statements.

ADDITIONAL INFORMATION AND WHERE TO FIND IT

In connection with the Proposed Transaction, Commerce will file with the SEC a Registration Statement on Form S-4 to register the shares of Commerce common stock to be issued in connection with the Proposed Transaction that will include a proxy statement of FineMark and a prospectus of Commerce (the “proxy statement/prospectus”), as well as other relevant documents concerning the Proposed Transaction. The definitive proxy statement/prospectus will be sent to the shareholders of FineMark seeking their approval of the Proposed Transaction and other related matters. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. INVESTORS AND SHAREHOLDERS OF FINEMARK ARE URGED TO READ THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS REGARDING THE PROPOSED TRANSACTION WHEN THEY BECOME AVAILABLE AND EACH OTHER RELEVANT DOCUMENT FILED WITH THE SEC BY COMMERCE IN CONNECTION WITH THE PROPOSED TRANSACTION, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Shareholders will be able to obtain a free copy of the definitive proxy statement/prospectus, as well as other filings containing information about the Proposed Transaction, Commerce and FineMark, without charge, at the SEC’s website, http://www.sec.gov. Copies of the proxy statement/prospectus and the filings with the SEC that will be incorporated by reference in the proxy statement/prospectus can also be obtained, without charge, by directing a request to Commerce’s Investor Relations via email at matthew.burkemper@commercebank.com or by telephone at (314) 746-7485, or to FineMark's Investor Relations via email at investorrelations@finemarkbank.com or by telephone at (239) 461-3850.

PARTICIPANTS IN THE SOLICITATION

Commerce, FineMark and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of FineMark in connection with the Proposed Transaction under the rules of the SEC. Information regarding Commerce’s directors and executive officers is available in the sections entitled “Directors, Executive Officers and Corporate Governance” and “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” in Commerce’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, which was filed with the SEC on February 25, 2025; in the sections entitled “Security Ownership of Certain Beneficial Owners and Management,” “Composition of the Board, Board Diversity and Director Qualifications,” “Corporate Governance” “Compensation Discussion and Analysis” and “Executive Compensation,” in Commerce’s definitive proxy statement relating to its 2025 Annual Meeting of Shareholders, which was filed with the SEC on March 14, 2025; and other documents filed by Commerce with the SEC. To the extent holdings of Commerce common stock by the directors and executive officers of Commerce have changed from the amounts held by such persons as reflected in the documents described above, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the proxy statement/prospectus relating to the Proposed Transaction. Free copies of this document may be obtained as described in the preceding paragraph.