Momenta Pharmaceuticals, Inc. (MNTA)

[DewDiligence]

MNTA Major Shareholders

[Updated for 1Q12 13F-HR filings.]


The table below shows all shareholders who filed their MNTA holdings
on SEC Form 13G in Feb 2012 (or later); the holdings are updated quarterly
for filings on Form 13F-HR (except Novartis) and are accurate as of 3/31/12.
The percentages in the table are based on 54.3M diluted shares (#msg-76922372)
and do not concur with the percentages on Form 13G, which use a different formula.

 
                            Shares    Stake 
 Scopia Mgmt               5,105,373   9.4% 
 Novartis                  4,708,679   8.7% 
 T Rowe Price              3,599,847   6.6% 
 Fidelity (FMR)            2,358,406   4.5%  
 Discovery Capital Mgmt    2,307,639   4.3% 
 BlackRock Fund Advsrs     2,289,741   4.2% 
 Palo Alto Investors       2,253,320   4.1%