ONYX PHARMACEUTICALS, INC. SHAREHOLDER ALERT: Levi & Korsinsky, LLP Announces Investigation into Possible Breaches of Fiduciary

ONYX PHARMACEUTICALS, INC. SHAREHOLDER ALERT: Levi & Korsinsky, LLP Announces
 Investigation into Possible Breaches of Fiduciary Duty by the Board of Onyx
                            Pharmaceuticals, Inc.

PR Newswire

NEW YORK, Aug. 29, 2013

NEW YORK, Aug. 29, 2013 /PRNewswire/ --Levi & Korsinsky is investigating the
Board of Directors of Onyx Pharmaceuticals, Inc. ("Onyx" or the "Company")
(NasdaqGS: ONXX) for possible breaches of fiduciary duty and other violations
of state law in connection with the sale of the Company to Amgen (Nasdaq:
AMGN).

(Logo: http://photos.prnewswire.com/prnh/20120409/MM84375LOGO)

Click here to learn more about the investigation
http://zlk.9nl.com/onyx-pharmaceuticals-onxx/, or call: 877-363-5972. There is
no cost or obligation to you.

Under the terms of the transaction, Onyx shareholders will receive $125.00 for
each share of Onyx stock they own. The investigation concerns whether the Onyx
Board of Directors breached their fiduciary duties to stockholders by failing
to adequately shop the Company before agreeing to enter into this transaction,
and whether Amgen is underpaying for Onyx shares. In particular, at least one
analyst set a price target of $160.00 per Onyx share.

If you and own Onyx common stock and wish to obtain additional information,
please contact Joseph E. Levi, Esq. either via email at jlevi@zlk.com or by
telephone at (212) 363-7500, toll-free: (877) 363-5972, or visit
http://zlk.9nl.com/onyx-pharmaceuticals-onxx/. 

Levi & Korsinsky is a national firm with offices in New York, New Jersey and
Washington D.C. The firm has extensive expertise in prosecuting securities
litigation involving financial fraud, representing investors throughout the
nation in securities and shareholder lawsuits. The attorneys at Levi &
Korsinsky have been appointed by numerous courts throughout the country to
serve as lead counsel on behalf of shareholders in major securities lawsuits
and have successfully recovered multimillion-dollar damages awards on behalf
of investors. For more information, please feel free to contact any of the
attorneys listed below. Attorney advertising. Prior results do not guarantee
similar outcomes.

CONTACT:
Levi & Korsinsky, LLP
Joseph Levi, Esq.
Eduard Korsinsky, Esq.
30 Broad Street - 24th Floor
New York, NY 10004
Tel: (212) 363-7500
Toll Free: (877) 363-5972
Fax: (212) 363-7171
www.zlk.com

SOURCE Levi & Korsinsky, LLP

Website: http://www.zlk.com