MNTA’s Largest Shareholders
[Updated for today’s Form-13 filing from Visium.]
Below are the holdings of the largest shareholders
as of 12/31/07 and their holdings change (if known)
from 4/15/07 (the cutoff date for the 2007 annual-
meeting proxy). The equity stakes are as reported
to the SEC. ---12/31/07-- Chng fm
Shares Stake 4/15/07
Novartis 4,708,679 13.0% 0.0
T Rowe Price 3,150,847 8.6% n/a
Ziff Asset Mgmt 3,008,131 8.3% -0.3*
Palo Alto Investors 3,102,460 8.5% +2.4
Atlas/Peter Barrett 2,459,100 6.7% -0.2*
Visium Asset Mgmt** 2,358,632 6.4% n/a
Federated Investors 2,031,300 5.6% n/a
Ridgeback Capital 1,768,592 4.8% n/a
FMR 566,800 1.6% -7.9
*No change in shares; stake reduced slightly
due to increased no. of shares outstanding.
**Holding as of 3/5/08.
Orbimed Advisors, who was previously a 7.5% holder, filed a Form-13G on 11/7/07 showing they had sold out completely as of that date.
Polaris Ventures, who was a 5% holder in April 2007, no longer meets the 5% threshold needed to file Form-13G, evidently.