X0206 3 2017-11-08 0 0001492422 Apellis Pharmaceuticals, Inc. APLS 0001543112 Morningside Venture Investments Ltd 2ND FLOOR, LE PRINCCE DE GALLES 3-5 AVENUE DES CITRONNIERS MC 98000 O9 MONACO 0 0 1 0 Series B Preferred Stock Common Stock 494394 D Series C Preferred Stock Common Stock 8063759 D Series D Preferred Stock Common Stock 2098581 D Series E Preferred Stock Common Stock 121566 D The Series B, Series C, Series D and Series E Preferred Stock are convertible into Common Stock on a 2.133-for-one basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date. Louise Mary Garbarino, Jill Marie Franklin, Peter Stuart Allenby Edwards and Raymond Long Sing Tang, the directors of Morningside Venture Investments, Ltd. ("MVIL"), share voting and dispositive control over the shares held by MVIL. /s/ Louise Mary Garbarino 2017-11-08 /s/ Jill Marie Franklin 2017-11-08