X0306 4 2020-07-16 0 0001689657 Berkeley Lights, Inc. BLI 0001163715 MARKS MICHAEL E 5858 HORTON STREET, SUITE 320 EMERYVILLE CA 94608 1 0 0 0 Common Stock 2020-07-16 4 C 0 4117755 A 4117755 I See footnote Common Stock 2020-07-16 4 C 0 19230 A 19230 I By Marks Family Trust Series B Preferred Stock 2020-07-16 4 C 0 2329916 0.00 D Common Stock 2329916 0 I See footnote Series C Preferred Stock 2020-07-16 4 C 0 853242 0.00 D Common Stock 853242 0 I See footnote Series D Preferred Stock 2020-07-16 4 C 0 742942 0.00 D Common Stock 742942 0 I See footnote Series E Preferred Stock 2020-07-16 4 C 0 191655 0.00 D Common Stock 191655 0 I See footnote Series E Preferred Stock 2020-07-16 4 C 0 19230 0.00 D Common Stock 19230 0 I By Marks Family Trust Each share of Preferred Stock automatically converted on a one-for-one basis into Common stock upon the closing of the Issuer's initial public offering Following the transactions reported herein, consists of 3,183,158 shares held by Walden Riverwood Ventures, L.P. ("Walden") and 934,597 shares held by WRV II, L.P. ("WRV II"). Mr. Marks is a member of the investment committee of Walden Riverwood GP, LLC ("Walden GP"), which is the general partner of Walden. Mr. Marks is a member of the investment committee of WRV GP II, LLC ("WRV GP"), which is the general partner of WRV II. As a result, Mr. Marks may be deemed to beneficially own the shares held by Walden and WRV II. Mr. Marks disclaims beneficial ownership of the shares held by Walden and WRVII except to the extent of his pecuniary interest therein. Walden and WRV II are filing separate statements of changes in beneficial ownership on Forms 4. As trustee of the Marks Family Trust (the "Trust"), Mr. Marks may be deemed to beneficially own the shares held by the Trust. Mr. Marks disclaims beneficial ownership of the shares held by the Trust except to the extent of his pecuniary interest therein. Mr. Marks is a member of the investment committee of Walden GP, which is the general partner of Walden. As a result, Mr. Marks may be deemed to beneficially own the shares held by Walden. Mr. Marks disclaims beneficial ownership of the shares held by Walden except to the extent of his pecuniary interest therein. Walden and Walden GP are filing separate statements of change in beneficial ownership on Forms 4. Mr. Marks is a member of the investment committee of WRV GP, which is the general partner of WRV II. As a result, Mr. Marks may be deemed to beneficially own the shares held by the WRV II. Mr. Marks disclaims beneficial ownership of the shares held by WRV II and Walden except to the extent of his pecuniary interest therein. WRV II and Walden are filing separate statements of initial change in beneficial ownership on Forms 4. /s/ Stuart L. Merkadeau, Attorney-in-fact for Michael Marks 2020-07-20