Neptune Insurance Holdings Inc. Announces Pricing of Public Offering

As part of the proposed offering, the Company intends to concurrently purchase from the underwriters 984,140 shares of Class A common stock at a price per share of $26.40, equal to the price per share to be paid by the underwriters to the selling securityholders in the proposed offering. The repurchased shares of Class A common stock will be retired and will no longer be outstanding after the proposed offering. The completion of the share repurchase is contingent on the satisfaction of customary closing conditions and conditioned upon the completion of the proposed offering.

The offering is expected to close on May 15, 2026, subject to customary closing conditions.

In addition, the selling securityholders have granted the underwriters a 30-day option to purchase up to an additional 1,476,209 shares of Class A common stock at the public offering price, less underwriting discounts and commissions.

Morgan Stanley is acting as lead left bookrunner for the proposed offering. J.P. Morgan and Goldman Sachs & Co. LLC are acting as active bookrunners. BofA Securities, BMO Capital Markets, Deutsche Bank Securities, Evercore ISI, Keefe, Bruyette & Woods, a Stifel Company, Mizuho, Piper Sandler, Raymond James, TD Securities and Wells Fargo Securities are acting as joint bookrunners. Dowling & Partners Securities LLC and Capital One Securities are acting as co-managers.

The offering is being made available only by means of a prospectus. Copies of the prospectus relating to this offering may be obtained by visiting EDGAR on the SEC’s website at www.sec.gov. Alternatively, copies of the prospectus may be obtained from Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, New York 10014; J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, or by email at prospectus-eq_fi@jpmchase.com and postsalemanualrequests@broadridge.com; or Goldman Sachs & Co. LLC, Attention: Prospectus Department, 200 West Street, New York, New York 10282, telephone: 866-471-2526 or by emailing prospectus-ny@ny.email.gs.com.

A registration statement on Form S-1 relating to these securities has been declared effective by the SEC on May 13, 2026.

This press release does not constitute an offer to sell or a solicitation of an offer to buy these securities, and there shall be no 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.