IBERIABANK has granted the underwriters a 30-day option to purchase 450,000 additional depositary shares, solely to cover over-allotments, if any. When, as, and if declared by the board of directors of the Company, dividends will be payable on the Series B preferred stock from the date of issuance to, but excluding August 1, 2025, at a rate of 6.625% per annum, payable semi-annually, in arrears, and from and including August 1, 2025, dividends will accrue and be payable at a floating rate equal to three-month LIBOR plus a spread of 426.2 basis points, payable quarterly, in arrears. The Company may redeem the Series B preferred stock at its option, subject to regulatory approval, as described in the prospectus supplement and accompanying prospectus relating to the offering.