X0306 4 2018-05-02 0 0001609550 Inspire Medical Systems, Inc. INSP 0001327953 Griffin Jerry C C/O INSPIRE MEDICAL SYSTEMS, INC. 9700 63RD AVENUE NORTH, SUITE 200 MAPLE GROVE MN 55369 1 0 0 0 Common Stock 2018-05-07 4 C 0 7026 A 47551 D Common Stock 2018-05-07 4 C 0 811 A 48362 D Common Stock 2018-05-07 4 C 0 8050 A 56412 D Series D Convertible Preferred Stock 2018-05-07 4 C 0 46729 0 D Common Stock 7026 0 D Series E Convertible Preferred Stock 2018-05-07 4 C 0 4695 0 D Common Stock 811 0 D Series F Convertible Preferred Stock 2018-05-07 4 C 0 53535 0 D Common Stock 8050 0 D Employee Stock Option (right to buy) 16.00 2018-05-02 4 A 0 17296 0 A 2028-05-02 Common Stock 17296 17296 D Shares of Series D and Series F Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock at a 1-for-0.1504 conversion rate immediately prior to the closing of the Issuer's initial public offering ("IPO") for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Issuer's Sixth Amended and Restated Certificate of Incorporation (as amended, the "Certificate of Incorporation")). These shares had no expiration date. Shares of Series E Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock at a 1-for-0.1728 conversion rate immediately prior to the closing of the Issuer's IPO for no additional consideration (subject to the payment of cash in lieu of any fractional shares in accordance with the Issuer's Certificate of Incorporation). These shares had no expiration date. The option vests and becomes exercisable on May 2, 2019, subject to the Reporting Person's continuous service to the Issuer through such date. The option was erroneously included on the Reporting Person's Form 3 filed on May 2, 2018. /s/ Richard Buchholz, as Attorney-in-Fact for Jerry C. Griffin, Jr. 2018-05-09