O'Melveny Represents Cytomx Therapeutics in Expansion of Series B Financing

July 31, 2012



Andrea Rodeschini
O’Melveny & Myers LLP

SILICON VALLEY, CA -- JULY 31, 2012 -- O’Melveny & Myers LLP represented CytomX Therapeutics Inc. in the expansion of its Series B round, bringing the total raised to US$41 million.

O'Melveny's Silicon Valley-based team was led by partners Sam Zucker and Jennifer DePalma and associate Ruchun Ji.

About O’Melveny & Myers LLP
With approximately 800 lawyers in 15 offices worldwide, O’Melveny & Myers LLP helps industry leaders across a broad array of sectors manage the complex challenges of succeeding in the global economy. We are a values-driven law firm, guided by the principles of excellence, leadership, and citizenship. Our commitment to these values is reflected in our dedication to improving access to justice through pro bono work and championing initiatives that increase the diversity of the legal profession. For more information, please visit www.omm.com.

The following press release was recently issued by CytomX Therapeutics:

CytomX Therapeutics Expands Series B

CytomX Therapeutics Inc., a San Francisco-based biotech startup, has expanded its Series B round, bringing the total raised to $41 million. Canaan Partners led the financing and was joined by existing investors Third Rock Ventures and the Roche Venture Fund. Tim Shannon of Canaan Partners will join CytomX’s board.


CytomX Therapeutics, Inc., a biotechnology company creating a new generation of highly targeted antibody therapeutics, today announced that the company has expanded its Series B financing, bringing the total size of the round to $41 million. Canaan Partners led the financing and was joined by existing investors Third Rock Ventures and the Roche Venture Fund. In conjunction with the financing, Tim Shannon, M.D., of Canaan Partners will join CytomX’s board of directors.

“We are impressed with the significant recent progress that CytomX and its exceptional team have made,” said Dr. Shannon. “CytomX’s Probody™ Platform is a novel and differentiated approach for developing highly targeted antibody therapeutics. This proprietary technology has the potential to redefine the target landscape for antibodies and antibody drug conjugates. We look forward to working with the company and realizing the full potential of the Probody platform.”

CytomX is building a pipeline of Probodies against validated and novel targets in oncology, inflammation and other areas of high unmet medical need. Probodies are designed to expand therapeutic window by focusing antibody efficacy directly to disease tissues. Proceeds from the expanded Series B financing round will support the advancement of the company’s lead programs toward the clinic and the execution on broad business development activities aimed at the formation of key partnerships in oncology and inflammatory disease.

“This has been a year of transformative progress for CytomX during which we have developed a clear focus on value creation through pipeline advancement,” said Sean McCarthy, D. Phil., chief executive officer of CytomX. “We are pleased to welcome Canaan Partners to our investor syndicate and Tim to our board of directors at this pivotal time in the company’s growth. Canaan Partners shares our vision of building a great biotech company dedicated to transforming lives with safer, more effective therapies.”

About Canaan Partners
Canaan Partners invests in entrepreneurs and works alongside them to turn visionary ideas into valuable companies. Since 1987, the firm has catalyzed the growth of disruptive technology startups and healthcare companies revolutionizing the practice of medicine. With $3.5 billion under management and more than 85 acquisitions and 53 IPOs to date, Canaan has funded healthcare companies such as Advanced BioHealing (acquired by Shire); Advance PCS (acquired by Caremark), BiPar Sciences (acquired by Sanofi); Calixa Therapeutics (acquired by Cubist); Cerexa Pharmaceuticals (acquired by Forest Labs) and Peninsula Pharmaceuticals (acquired by Johnson & Johnson). Current healthcare investments include emerging leaders such as Liquidia Technologies, Theraclone Sciences, Durata, Civitas Therapeutics, Elevation Pharmaceuticals and DICOM Grid. Canaan maintains a presence in the global innovation hubs of New York, Silicon Valley, India and Israel. For more information visit www.canaan.com or www.facebook.com/canaanpartners.

About CytomX
CytomX Therapeutics is a biotechnology company focused on revolutionizing the monoclonal antibody field by creating a new generation of highly targeted antibody therapeutics. CytomX’s novel Probody™ Platform offers a highly differentiated approach to developing antibody therapeutics, and is based on a robust and growing intellectual property estate. This novel platform is driving the development of Probodies, which are masked antibodies that remain inert in healthy tissue but are activated by proteases within the disease microenvironment. This new level of tissue activation and selectivity enables CytomX to access new targets and expand the therapeutic index of existing targets. CytomX is building a diversified pipeline of Probodies and Probody-Drug Conjugates across a broad range of therapeutic targets in oncology, inflammation and other areas of high, unmet medical need. Based in San Francisco, CytomX is led by an experienced and proven management team and financed by leading life science investors.