Conference Calls

Momenta Pharmaceuticals Inc

Investor Conference Call

10:00 AM

Momenta Pharmaceuticals Inc. (MNTA) will host a conference call to discuss the recently announced collaboration with Baxter. The event is scheduled to begin at 10:00 AM ET December 23, 2011. To access the live audio webcast, log on at www.momentapharma.com To hear the call, dial (877) 224-9084 (US) or (720) 545-0022 (International) with access code 39389091.

SandRidge Energy Inc.

Investor Conference Call

9:00 AM

SandRidge Energy Inc. (SD) will host a investor conference call at 9:00 AM ET on December 23, 2011, to discuss the joint venture with a subsidiary of Repsol YPF, S.A To access the live webcast, www.sandridgeenergy.com To participate in the call, dial 800-299-9086 (US) or +1-617-786-2903 (International) using pass code is 49579487. To listen to the replay, dial 888-286-8010 (US) or +1-617-801-6888. using pass code is 76935525.

Mercury Systems, Inc

Investor Conference Call

8:30 AM

Mercury Computer Systems, Inc. (MRCY) will host a conference call at 8:30 AM ET on December 23, 2011, to discuss the acquisition of KOR Electronics, Inc. (KOR) & its wholly owned subsidiary, Paragon Dynamics, Inc. (PDI). To listen to the call, dial (888) 806-6224 (US/Canada) or (913) 312-0390 (International) with conference ID number is 7432738. To access the replay, dial (888) 203-1112 (US/Canada) or (719) 457-0820 (International) with access code 7432738.