Curis Added to Russell 3000®and Russell 2000® Indexes

CAMBRIDGE, Mass.--(Business Wire)--
Curis, Inc. (NASDAQ: CRIS), a drug development company focused on developing
proprietary targeted medicines for cancer treatment, today announced that it was
added to the Russell 3000® and Russell 2000® Indexes when Russell Investment
Group reconstituted its family of U.S. indexes after stock market close on June
26, 2009.

The Russell family of U.S. indexes is designed to be a comprehensive
representation of the investable U.S. equity market and is reconstituted
annually. The Russell 3000 Index measures the performance of the largest 3000
U.S. companies representing approximately 98 percent of the investable U.S.
equity market. Membership in the Russell 3000 Index results in automatic
inclusion in either the large-cap Russell 1000® Index or the widely used
small-cap Russell 2000. The Russell 2000 Index measures the performance of the
small-cap segment of the U.S. equity universe and includes approximately 2000 of
the smallest securities based on a combination of their market cap and current
index membership.

Russell indexes are widely used by managers for index funds and as benchmarks
for both passive and active investment strategies. $4 trillion in assets
currently are benchmarked to Russell indexes, and investment managers who
oversee these funds purchase shares of member stocks according to that company`s
weighting in the particular index.

About Curis, Inc.

Curis is a drug development company that is committed to leveraging its
innovative signaling pathway drug technologies to seek to create new medicines
for cancer indications. In expanding its drug development efforts in the field
of cancer through its targeted cancer drug development platform, Curis is
building upon its previous experiences in targeting signaling pathways for the
development of next generation targeted cancer therapies. For more information,
visit Curis` website at www.curis.com.

Curis, Inc.
Michael P. Gray, 617-503-6632
Chief Financial and Chief Operating Officer
mgray@curis.com

Copyright Business Wire 2009