Pfenex to Present at the Cantor Healthcare Conference

Pfenex Inc. (NYSE American: PFNX), a clinical-stage development and licensing biotechnology company focused on leveraging its Pfēnex Expression Technology® to improve protein therapies for unmet patient needs, today announced that Eef Schimmelpennink, President and Chief Executive Officer, will be presenting at the Cantor Healthcare Conference on Thursday, October 3rd, taking place at the Intercontinental Hotel in New York City, October 2nd through 4th.

Cantor Healthcare Conference

Date:	Thursday, October 3, 2019
Time:	10:05 a.m. Eastern Time

Interested parties can access the live audio webcast and archive from the Investors Section of Pfenex's website at www.pfenex.com.

About Pfenex Inc.

Pfenex is a clinical-stage development and licensing biotechnology company focused on leveraging its Pfēnex Expression Technology® to develop and improve protein therapies for unmet patient needs. Using the patented Pfēnex Expression Technology platform, Pfenex has created an advanced pipeline of potential therapeutic equivalents, vaccines, biologics and biosimilars. Pfenex’s lead product candidate is PF708, a therapeutic equivalent candidate to Forteo® (teriparatide) for the treatment of osteoporosis. In addition, Pfenex is developing hematology/oncology products, including PF743, a recombinant crisantaspase, and PF745, a recombinant crisantaspase with half-life extension technology, in collaboration with Jazz Pharmaceuticals. Pfenex also uses its Pfēnex Expression Technology platform to produce CRM197, a diphtheria toxoid carrier protein used in prophylactic and therapeutic vaccines.

Pfenex investors and others should note that Pfenex announces material information to the public about Pfenex through a variety of means, including its website (http://www.pfenex.com/), its investor relations website (http://pfenex.investorroom.com/), press releases, SEC filings, public conference calls, corporate Twitter account (https://twitter.com/pfenex), Facebook page (https://www.facebook.com/Pfenex-Inc-105908276167776/timeline/), and LinkedIn page (https://www.linkedin.com/company/pfenex-inc) in order to achieve broad, non-exclusionary distribution of information to the public and to comply with its disclosure obligations under Regulation FD. Pfenex encourages its investors and others to monitor and review the information Pfenex makes public in these locations as such information could be deemed to be material information. Please note that this list may be updated from time to time.

Company Contact: Susan A. KnudsonChief Financial Officer(858) [e-mail]