Amyris Names Karen Rohde as Chief Human Resources Officer

Amyris Names Karen Rohde as Chief Human Resources Officer

EMERYVILLE, Calif., April 5, 2013 (GLOBE NEWSWIRE) -- Amyris, Inc.
(Nasdaq:AMRS), a leading renewable chemicals and fuels company, announced
today Karen D. Rohde has joined the Company as Chief Human Resources Officer.

"Karen brings proven expertise in helping companies optimize organization
performance through the use of effective human resources practices," said John
Melo, President and Chief Executive Officer of Amyris. "Karen's expertise in
aligning people, organization and business strategy to create a culture that
attracts, retains, develops and rewards high-caliber talent will help ensure
Amyris continues to strengthen its capability to meet our customer and
investor expectations."

Previously, Karen Rohde was Senior Vice President Human Resources for Hitachi
Global Storage Technologies, Inc. (HGST), where she helped drive the company's
turnaround by building a customer-focused, high-performance culture that
promoted global alignment, agility and collaboration across its 45,000
employee organization. Prior to HGST, Rohde was Senior Vice President Human
Resources & Chief Talent Officer for Sun Microsystems, Inc. During her 13-year
tenure at Sun, Rohde designed and implemented competitive, integrated talent
systems and supported multiple acquisitions. Rohde began her career in Finance
at Mobil Oil Corporation. Rohde has an MBA from the Haas Business School at
University of California at Berkeley and a BA in English from the University
of California at Irvine.

"Amyris is leading the way in building commercial renewable chemical and fuel
production that supports a cleaner, more sustainable environment. I'm excited
to be joining Amyris's executive team and ensuring we have the organization
and talent to continue to scale effectively around the world," said Rohde.

About Amyris, Inc.

Amyris is an integrated renewable products company focused on providing
sustainable alternatives to a broad range of petroleum-sourced products.
Amyris uses its industrial synthetic biology platform to convert plant sugars
into a variety of hydrocarbon molecules—flexible building blocks that can be
used in a wide range of products. Amyris's initial portfolio of commercial
products is based on Biofene, Amyris's brand of renewable farnesene, a
long-chain hydrocarbon. Amyris is commercializing these products both as No
Compromise® renewable ingredients in cosmetics, flavors and fragrances,
polymers, lubricants and consumer products, and also as No Compromise
renewable diesel and jet fuel. Amyris Brasil Ltda., a subsidiary of Amyris,
oversees the establishment and expansion of Amyris's production in Brazil.
More information about Amyris is available at

Amyris, Biofene and No Compromise are trademarks or registered trademarks of
Amyris, Inc.

CONTACT: Media Contacts
         Joel Velasco
         +1 (510) 597-5577

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