the russell factor

Unilife Corporation Joins the Russell 3000, Russell Microcap and Russell Global Indexes
Lewisberry, PA (June 28, 2010) Unilife Corporation (Unilife or Company) (NASDAQ: UNIS, ASX: UNS) announced that it was added to the Russell 3000, Russell Microcap and Russell Global indexes in the U.S as of Friday, June 25, 2010.

The Russell 3000 Index is comprised principally of the 3,000 largest and most liquid stocks based and traded in the U.S. Russell determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes. Membership in the Russell
indexes remains in place for one year. Being included in the Russell indexes so soon after completing Unilifes listing on the NASDAQ Global Market is a significant validation of our redomiciliation from Australia to the U.S., stated Alan Shortall, CEO of Unilife Corporation. Membership in these widely followed indexes will help increase Unilifes visibility among investors in the U.S. equity market.
Most companies that joined the Russell 3000 and associated indexes, including Unilife Corporation, experienced a significant increase in the trading volume of their common stock on U.S. exchanges on Friday, June 25. There were almost seven million Unilife shares traded on Friday, which is the equivalent of 41.7 million CDIs with a value of approximately US$50 million.

We expect much of the increase in Unilife trading volume on Friday represented the inflow of U.S investors that track the Russell indexes. said Mr. Shortall. Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for both passive and active investment strategies. An industry leading US$3.9 trillion in assets currently are benchmarked to the Russell indexes. These investment tools originated from Russells multi-manager investment business in the early 1980s when the company saw the need for a more objective, market-driven set of benchmarks
in order to evaluate outside investment managers.
Total returns data for the Russell 3000 and other Russell Indexes is available at russell.com/indexes/performance/default.asp

About Russell
Russell Investments provides strategic advice, world-class implementation, state-of-the-art performance benchmarks and a range of institutional-quality investment products. Russell has $179 billion in assets under management as of March 31, 2010, and serves individual, institutional and
advisor clients in more than 40 countries. Founded in 1936, Russell is a subsidiary of The Northwestern Mutual Life Insurance Company.