Back to search detail summary
Client Registration: 2026  
Registration Information:
Registration Status: Concluded
Authorizing Officer name Matthew O'Donnell
Title Head of State Government Affairs
Business name Alexion Pharmaceuticals, Inc.
Address 18 Patton Drive   
City, state, zip code Darien, CT 06820         
Country US
Phone 475-267-8837 
Employment Information:

Account Type:   Lobbyist Entity
Authorizing Officer Name:  
Joseph   A   Boncore
First   Middle   Last
Employed By:   Commonwealth Counsel, LLC
Street 1:   146 Bowdoin Street
Street 2:   Unit G-7
City, State, Zip:   Boston MA 02108
Country:   US
Phone:   617-429-2068
Primary Email Address:   joe@commonwc.com
Additional Email Addresses:   jon@daigleconsulting.com
Agent Type  
Date of Employment   01/01/2026
Date of Termination:  

Account Type:   Lobbyist
Authorizing Officer Name:  
Brian     Rosen
First   Middle   Last
Employed By:   Alexion Pharmaceuticals, Inc.
Street 1:   121 Seaport Boulevard
Street 2:  
City, State, Zip:   Boston MA 02210
Country:   US
Phone:   614-787-3781
Primary Email Address:   brian.rosen@alexion.com
Additional Email Addresses:  
Agent Type   Both
Date of Employment   01/01/2026
Date of Termination: