Biotech Values

[DewDiligence]

MNTA Major Shareholders

[Updated for T Rowe Price filing on 11/10/09.

Officer/director holdings are as of today and include restricted
stock and options, whether or not vested. Institutional holdings
are as reported on the most recent Form 13G filing; unless
otherwise indicated, the most recent Form 13G filing is for
holdings as of 12/31/08 .

The percentages shown below are based on 49.1M diluted
shares (#msg-42163809), and hence they differ from the
percentages reported in SEC filings.]

 
                             Shares  Stake 
 Novartis                  4,708,679  9.6% 
 T Rowe Price              4,468,373‡ 9.1% 
 Visium Asset Mgmt         3,349,122  6.8% 
 Samana Capital            2,109,760  4.3% 
 Federated Investors       1,381,457† 2.8% 
 R. Langer (Ex-director)   1,066,022  2.7% 
 Craig Wheeler (CEO)         987,344  2.0% 
 Alan  Crane (Director)      652,202  1.3% 
 G. Venkataraman (SVP, R&D)  628,540  1.2%  
 Ram Sasisekharan (Director) 517,344  1.0%  
  
 †As of  9/30/09 (from 13G/A filing 10/13/09). 
 ‡As of 10/31/09 (from 13G/A filing 11/10/09).