Conference Calls

DYNASIL CORP OF AMERICA

Q4 11 Earnings Conference Call

5:00 PM

Dynasil Corporation of America (DYSL) will host a conference call at 5:00 PM ET December 29, 2011, to discuss its Q4 11 earnings results. To access the live webcast, log on at www.dynasilcorp.com A call can be accessed by dialing (877) 407-5790 or (201) 689-8328.

Bridgeline Digital, Inc

Q4 11 Earnings Conference Call

4:30 PM

Bridgeline Digital, Inc. (BLIN) will host a conference call at 4:30 PM ET on December 29, 2011, to discuss its Q4 11 financial results. A call can be accessed by dialing (877) 837-3910 or (973) 796-5077 (international).

Alexion Pharmaceuticals Inc.

Investor conference call

9:00 AM

Alexion Pharmaceuticals, Inc. (ALXN) will host a conference call at 9:00 AM ET on December 29, 2011, to discuss its proposed acquisition of Enobia Pharma Corp. To access the webcast, log on at www.alexionpharma.com To particiapate in the live call, dial 1-888-297-0356 (US) or 1-719-325-2109 (international) uisng passcode number is 5470489. To listen to the replay, dial 888-203-1112 (US) or 719-457-0820 (International) using confirmation code 5470489.

Chesapeake Midstream Partners, L.P.

Investor Conference Call

9:00 AM

Chesapeake Midstream Partners, L.P (CHKM) will host a Investor Conference Call at 9:00 AM ET on December 29, 2011, to discuss the acquisition of Appalachia Midstream Services and an outlook for 2012. To access the webcast www.chkm.com A call can be accessed by dialing, 719-457-2662 or 888-282-4591 ; with passcode 2460591. To listen to the replay, dial 719-457-0820 or 888-203-1112 ; with passcode 2460591.