Back to search detail summary
Client Registration: 2026  
Registration Information:
Registration Status: Concluded
Authorizing Officer name Kristen Cullen
Title Vice President of Global Policy and Public Affairs
Business name Commonwealth Fusion Systems, LLC
Address 117 Hospital Road   
City, state, zip code Devens, MA 01434         
Country US
Phone 781-583-3100 
Employment Information:

Account Type:   Lobbyist Entity
Authorizing Officer Name:  
Sira     Grant
First   Middle   Last
Employed By:   Smith Costello & Crawford Public Policy Group, LLC
Street 1:   1 State Street
Street 2:   Suite 1500
City, State, Zip:   Boston MA 02109
Country:   US
Phone:   617-523-0600
Primary Email Address:   sgrant@publicpolicylaw.com
Additional Email Addresses:  
Agent Type  
Date of Employment   01/01/2026
Date of Termination:  

Account Type:   Lobbyist
Authorizing Officer Name:  
Kristen     Cullen
First   Middle   Last
Employed By:   Commonwealth Fusion Systems LLC
Street 1:   117 Hospital Road
Street 2:  
City, State, Zip:   Devens MA 01434
Country:   US
Phone:   781-583-3100
Primary Email Address:   kristen@cfs.energy
Additional Email Addresses:   sgrant@publicpolicylaw.com
Agent Type   Both
Date of Employment   01/01/2026
Date of Termination:  

Account Type:   Lobbyist
Authorizing Officer Name:  
Sara     Castegini
First   Middle   Last
Employed By:   Commonwealth Fusion Systems LLC
Street 1:   117 Hospital Road
Street 2:  
City, State, Zip:   Devens MA 01434
Country:   US
Phone:   781-583-3100
Primary Email Address:   scastegini@cfs.energy
Additional Email Addresses:   sgrant@publicpolicylaw.com
Agent Type   Both
Date of Employment   01/01/2026
Date of Termination: