X0306 4 2015-05-08 0 0001293818 OPGEN INC OPGN,OPGNW 0001266567 ATWOOD BRIAN G ONE SANSOME STREET, SUITE 3630 SAN FRANCISCO CA 94104 1 0 1 0 Common Stock 2015-05-08 4 P 0 413332 6.00 A 485925 I See footnote Common Stock 2015-05-08 4 C 0 1160039 A 1645964 I See footnote Common Stock 2015-05-08 4 C 0 404725 A 2050689 I See footnote Common Stock 2015-05-08 4 C 0 503522 A 2554211 I See footnote Series A Redeemable Convertible Preferred Stock 2015-05-08 4 C 0 1160039 0.00 D Common Stock 1160039 0 I See footnote 2014 Convertible Notes 2015-05-08 4 C 0 404725 0.00 D Common Stock 404725 0 I See footnote 2015 Convertible Notes 2015-05-08 4 C 0 503522 0.00 D Common Stock 503522 0 I See footnote Warrants 6.60 2015-05-08 4 P 0 413332 0.00 A 2015-05-08 2020-05-08 Common Stock 413332 413332 I See footnote Series A Redeemable Convertible Preferred Stock automatically converted into common stock on a 1-to-1 basis upon the consummation of the Company's initial public offering. The 2014 Convertible Notes automatically converted into shares of Series A Preferred Stock upon the consummation of the Company's initial public offering at a conversion rate of one share of Series A Preferred Stock for every $1.00 of principal converted. Each share of Series A Preferred Stock automatically converted into one share of common stock upon the consummation of the Company's initial public offering. The 2015 Convertible Notes converted into Series A Preferred Stock upon the consummation of the Company's initial public offering at a conversion rate of 1.25 shares of Series A Preferred Stock for each $1.00 of principal converted. Each share of Series A Preferred stock automatically converted into one share of common stock upon the consummation of the Company's initial public offering. The securities are directly held by Versant Venture Capital III, L.P. and Versant Side Fund III, L.P. (collectively, the "Versant Entities"). Mr. Atwood is a managing member of Versant Ventures III, LLC, the sole general partner of the Versant Entities and may be deemed to have shared voting and dispositive power over the shares owned by the Versant Entities. Mr. Atwood disclaims beneficial ownership of all shares held by the Versant Entities, except to the extent of his actual pecuniary interest therein. /s/ Timothy C. Dec, Attorney-in-Fact 2015-05-12