You can contact FibroGen, Inc.'s Board of Directors or an individual FibroGen director to provide comments, to report concerns, or to ask a question, at the following address:

Corporate Secretary
FibroGen, Inc.
409 Illinois Street
San Francisco, CA 94158
United States

You may submit your comment anonymously or confidentially. You may also indicate whether you are a shareholder, customer, supplier, or other interested party.

The Company’s Secretary will review each communication and forward such communication to the Board or to any individual director to whom the communication is addressed unless the communication is unduly frivolous, hostile, threatening or similarly inappropriate, in which case, the Secretary shall discard the communication. In addition, any matters unrelated to the duties and responsibilities of the board will be discarded, such as: product complaints, product inquiries, new product suggestions, resumes and other forms of job inquiries, surveys, business solicitations or advertisements.