Aviron, Inc.
Ticker: AVIR 297 North Bernardo Avenue
Exchange: NASDAQ-National Market Mountain View, California 94043
Industry: Manufacturing (415) 919-6500

Type of Shares:Common Shares Filing Date:6/5/96
U.S. Shares:2,000,000 Offer Date:11/5/96
Non-U.S. Shares:0 Filing Range:$11.00 - $13.00
Primary Shares:2,000,000 Offer Price:$8.00
Secondary Shares:0 Gross Spread:$0.56
Offering Amount: $24,000,000 Selling:$0.30
Expenses:$775,000 Reallowance:$0.10
Shares Out After:12,285,990

ManagerTierPhone
Robertson, Stephens & CompanyLead Manager (415) 989-8500
Bear, Stearns & Co. Inc.Co-manager (212) 272-2000
Hambrecht & Quist IncorporatedCo-manager (415) 576-3423

Audited
Income
Latest
Unaudited
Income
Prior
Unaudited
Income
Balance
Sheet
12/31/95 3/31/96 3/31/95 3/31/96
Revenue:$1.71$0.19$0.00Assets:$17.28
Net Income:-$11.40-$3.92-$3.76Liabilities:$3.11
EPS:-$1.24-$0.41-$0.41Equity:$14.17

Note: Dollar amounts are in U.S. millions; Audited figures expressed as full year,
unaudited figures are partial year

Business Description
The company is a biopharmaceutical company whose strategy is to focus on prevention of disease. The company's goal is to become a leader in the discovery, development, manufacture and marketing of live virus vaccines which are sufficiently cost effective to justify their use in immunization programs targeting the general population. Live virus vaccines, such as those for smallpox, polio measles, mumps and rubella, have had a long record of success in preventing, and in some cases eliminating, disease. The company currently is analyzing data from Phase I and Phase II clinical trials in children and adults of its live cold adapted intranasal vaccine for influenza. The company has recently in-licensed a live intranasal vaccine for Parainfluenza Virus Type 3 which has been tested by other s in Phase I/II clinical trials. The company is also developing a subunit vaccine for Epstein-Barr Virus. In addition, the company is using its proprietary "Rational Vaccine Design" technology to discover new live virus vaccines.

Use of Proceeds
The proceeds from the proposed offering will be used for research and development including preclinical and clinical trials, capital expenditures, working capital and other general corporate purposes.

Last updated: 11/27/96

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