X0306 4 2016-07-29 0 0001037649 INTERLEUKIN GENETICS INC ILIU 0001288452 BAY CITY CAPITAL LLC 750 BATTERY STREET, SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 0001401826 Bay City Capital Fund V, L.P. 750 BATTERY STREET, SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 0001409813 Bay City Capital Fund V Co-Investment Fund, L.P. 750 BATTERY STREET, SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 0001461543 Bay City Capital Management V LLC 750 BATTERY STREET, SUITE 400 SAN FRANCISCO CA 94111 0 0 1 0 Common Stock 2016-07-29 4 P 0 29616700 0.0994 A 75800716 I See footnotes Common Stock 2016-07-29 4 P 0 564386 0.0994 A 1444485 I See footnotes Common Stock Warrant (right to buy) 0.0994 2016-07-29 4 P 0 29616700 0.00 A 2016-07-29 2023-07-29 Common Stock 29616700 29616700 I See footnotes Common Stock Warrant (right to buy) 0.0994 2016-07-29 4 P 0 564386 0.00 A 2016-07-29 2023-07-29 Common Stock 564386 564386 I See footnotes Bay City Capital LLC, a Delaware limited liability company ("BCC"), Bay City Capital Management V LLC, a Delaware limited liability company ("Management V"), Bay City Capital Fund V, L.P., a Delaware limited partnership ("Fund V"), and Bay City Capital Fund V Co-Investment Fund, L.P., a Delaware limited partnership ("Co-Investment V"), are deemed to be a "group" for the purpose of Section 13(d) under the Securities Exchange Act of 1934. Management V is the general partner of Fund V and Co-Investment V and has sole voting and dispositive power with respect to the securities held by Fund V and Co-Investment V. BCC, the manager of Management V, is also an advisor to Fund V and Co-Investment V and has sole voting and dispositive power with respect to the securities held by Fund V and Co-Investment V. Represent securities held by Fund V, including indirect interests of Management V. Management V disclaims beneficial ownership with respect to these securities, except to the extent of its pecuniary interest therein. Represent securities held by Co-Investment V, including indirect interests of Management V. Management V disclaims beneficial ownership with respect to these securities, except to the extent of its pecuniary interest therein. /s/ Michael Lawhead, attorney-in-fact 2016-08-02