X0306 4 2016-12-16 0 0001512762 Coherus BioSciences, Inc. CHRS 0001427569 Viret Jean-Frederic COHERUS BIOSCIENCES, INC. 333 TWIN DOLPHIN DRIVE, SUITE 600 REDWOOD CITY CA 94065 0 1 0 0 Chief Financial Officer Common Stock, $0.0001 par value 2016-12-16 4 M 0 3900 13.50 A 6225 D Common Stock, $0.0001 par value 2016-12-16 4 S 0 3900 28.2987 D 2325 D Common Stock, $0.0001 par value 2016-12-19 4 M 0 667 13.50 A 2992 D Stock Option (right to buy) 13.50 2016-12-16 4 M 0 3900 0.00 D 2024-11-05 Common Stock 3900 117048 D Stock Option (right to buy) 13.50 2016-12-19 4 M 0 667 0.00 D 2024-11-05 Common Stock 667 116381 D The sale reported in the Form 4 was effected pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person. The transaction was executed in multiple trades in prices ranging from $27.75 to $28.70, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a stockholder of the Issuer, information regarding the number of shares and prices at which the transaction was effected. The underlying shares vest pursuant to the following schedule: Twenty Five Percent (25%) of the shares subject to the option vest one year measured from September 22, 2014 (the "Vesting Commencement Date") and the remaining shares subject to the option vest in 36 successive, equal monthly installments thereafter on each monthly anniversary of the Vesting Commencement Date, subject to Reporting Person's continued service relationship with the Issuer on each such vesting date. /s/ Jean-Frederic Viret 2016-12-20