0002067129 2026-05-11 2026-05-11 0002067129 1 2026-05-11 2026-05-11 iso4217:USD pure shares S-1 S-1 EX-FILING FEES 0002067129 Neptune Insurance Holdings Inc. N/A N/A S-1 Neptune Insurance Holdings Inc. false Equity Common Stock, par value $0.00001 per share true 9608957 24.45 234938998.65 0.0001381 32445.08 234938998.65 32445.08 0.00 0.00 32445.08 (a) Includes 1,253,342 additional shares of the registrant's Class A common stock that the underwriters have the option to purchase from the selling stockholders. (b) Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(c) under the Securities Act of 1933, as amended (the "Securities Act"), based on the average of the high and low prices of the shares of the registrant's Class A common stock on The New York Stock Exchange on May 5, 2026 (such date being within five business days of the date that this registration statement was first filed with the Securities and Exchange Commission, in accordance with Rule 457(c) of the Securities Act.