13G Filing: EcoR1 Capital and Fibrogen Inc (FGEN)

Item

1.

(a)

Name of Issuer Fibrogen, Inc.

(b)

Address of Issuer’s Principal Executive Offices 409 Illinois Street, San Francisco, CA 94158

Item

2.

(a)

The names of the persons filing this statement are: EcoR1 Capital, LLC (“EcoR1”) and Oleg Nodelman (“Nodelman”) (collectively, the “Filers”).

 

Each Filer also disclaims beneficial
ownership of the Stock except to the extent of

that person’s pecuniary
interest therein.

(b)

The principal business office of the Filers is located at: 409 Illinois Street, San Francisco, CA 94158

(c)

For citizenship of Filers, see Item 4 of the cover sheet for each Filer.

(d)

This statement relates to shares of Common Stock of the Issuer (the “Stock”).

(e)

The CUSIP number of the Issuer is: 31572Q808.