Nastech Pharmaceutical Company Inc. To Release First Quarter Financial Results And Host Webcast On Wednesday, May 3, 2006

BOTHELL, Wash., April 24 /PRNewswire-FirstCall/ -- Nastech Pharmaceutical Company Inc. announced today that its first quarter financial results will be released on Wednesday, May 3, 2006, after the Nasdaq National Market System closes. Management will host a conference call with investors and financial analysts to discuss these results and to provide an update on the Company’s clinical pipeline at 4:30 p.m. Eastern Time (1:30 p.m. Pacific Time).

To participate in the live conference call, U.S. residents should dial (800) 901-5259 and international callers should dial (617) 786-4514. The access code for the live conference call is 86896145. To access the 24-hour telephone replay, U.S. residents should dial (888) 286-8010 and international callers should dial (617) 801-6888. The access code for the replay is 18949096.

Alternatively, all interested parties are welcome to log on to http://www.nastech.com to access a live webcast or the subsequent 30-day archive. Please connect to the Investor section of Nastech’s website several minutes prior to the start of the live conference call to ensure adequate time for any software download that may be necessary.

About Nastech

Nastech is a pharmaceutical company developing innovative products based on proprietary molecular biology-based drug delivery technologies. Nastech and its collaboration partners are developing products for multiple therapeutic areas including osteoporosis, obesity, respiratory disease and inflammatory conditions. Additional information about Nastech is available at http://www.nastech.com.

Contacts: Nastech Ed Bell Senior Investor Relations Manager (425) 908-3639 ir@nastech.com Noonan Russo Matthew Haines (Investors/Media) (212) 845-4235

Nastech Pharmaceutical Company Inc.

CONTACT: Ed Bell, Senior Investor Relations Manager of NastechPharmaceutical Company Inc., +1-425-908-3639, ir@nastech.com; or Investors- Media: Matthew Haines of Noonan Russo, +1-212-845-4235, for NastechPharmaceutical Company Inc.

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