AMERANT BANCORP INC. (NYSE:AMTB) (the "Company") today announced the commencement of a registered public offering of senior notes due 2031 (the "Notes"). The Notes will be unsecured and unsubordinated, will rank equally in priority among themselves and with all of the Company’s other existing and future unsecured and unsubordinated indebtedness, and will be senior in right of payment to all of the Company's existing and future subordinated indebtedness. The proposed offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering.

The Company intends to use the net proceeds from this offering for general corporate purposes, which may include working capital, providing capital to support the organic growth of Amerant Bank, N.A., the Company's wholly-owned bank subsidiary, repaying outstanding indebtedness, and repurchasing shares of the Company’s Class A common stock under its stock repurchase program.

Raymond James & Associates, Inc. will act as the sole book-running manager for the proposed offering.

The Notes will be offered by the Company pursuant to an automatic shelf registration statement on Form S-3ASR (File No. 333-296741) filed with and automatically effective upon filing with the Securities and Exchange Commission (the "SEC") on June 12, 2026. A preliminary prospectus supplement and an accompanying prospectus relating to the offering will be filed with the SEC. Electronic copies of the preliminary prospectus supplement and the accompanying prospectus relating to the offering may be obtained, when available, from Raymond James & Associates, Inc., Attention: Equity Syndicate, 880 Carillon Parkway, Tower 3, St. Petersburg, Florida 33716, by telephone at (800) 248-8863, by e-mail at prospectus@raymondjames.com, or by accessing the SEC’s website at www.sec.gov.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. Any offer or sale of the Notes will be made only by means of a prospectus supplement relating to the offering and the accompanying prospectus.

Cautionary Notice Regarding Forward-Looking Statements

This press release contains "forward-looking statements" within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934, including, without limitation, statements regarding the proposed offering and the intended use of proceeds from the offering and other statements that are not historical facts. All statements other than statements of historical fact are statements that could be forward-looking statements. You can identify these forward-looking statements through our use of words such as "may," "will," "anticipate," "assume," "should," "indicate," "would," "believe," "contemplate," "expect," "estimate," "continue," "plan," "point to," "project," "could," "intend," "target," "goals," "outlooks," "modeled," and other similar words and expressions of the future.

Forward-looking statements, including those relating to our beliefs, plans, objectives, goals, expectations, anticipations, estimates and intentions, involve known and unknown risks, uncertainties and other factors, which may be beyond our control, and which may cause the Company’s actual results, performance, achievements, or financial condition to be materially different from future results, performance, achievements, or financial condition expressed or implied by such forward-looking statements. You should not rely on any forward-looking statements as predictions of future events. You should not expect us to update any forward-looking statements, except as required by law. All written or oral forward-looking statements attributable to us are expressly qualified in their entirety by this cautionary notice, together with those risks and uncertainties described in "Risk factors" in our annual report on Form 10-K for the fiscal year ended December 31, 2025, filed on February 27, 2026, in our quarterly report on Form 10-Q for the quarter ended March 31, 2026, filed on May 1, 2026, and in our other filings with the SEC, which are available at the SEC’s website www.sec.gov.

About Amerant Bancorp Inc. (NYSE:AMTB)

Amerant Bancorp Inc. is a bank holding company headquartered in Coral Gables, Florida since 1979. The Company operates through its main subsidiary, Amerant Bank, N.A. (the "Bank"), as well as its other subsidiary, Amerant Investments, Inc. The Company provides individuals and businesses with deposit, credit and wealth management services. The Bank, which has operated for over 45 years, is headquartered in Florida and has a network of 23 banking centers - 21 in South Florida and 2 in Tampa, Florida. For more information, visit investor.amerantbank.com.

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