Claims Service Information

To report a claim, please visit our Report a Claim page

Claims Services for National Specialty Insurance Company and Markel Insurance Company

If your policy begins with VFMK: Claim services are provided by Markel Insurance Company.

If your policy begins with IBL and your loss is not related to cyber coverage: Claim services are provided by Sedgwick Claims Management Services. If your claim was submitted after June 1st 2026 claim services are provided by Reserv. 

If your policy begins with IBL and your loss is related to cyber coverage: Claim services are provided by Tokio Marine HCC – Cyber & Professional Lines Group.

If your policy begins with HBL: Claim services are provided by American Claims Management, Inc.

 Contact information for claims:
 

Policy Prefix: IBL, that’s National Specialty Insurance Company.
Claims administrator is Sedgwick Claims Management Service
Call: 855-840-2840 (Call 24 hours a day, 7 days/week)
Email: 9370Thimble@sedgwick.com

Policy Prefix: IBL, that’s National Specialty Insurance Company.
For claims submitted after June 1st 2026, Claims are handled by Reserv, the designated claims administrator for Thimble and National Specialty Insurance Company.
Call: 1 (332) 208-8159
Email: new.claims+thimble@reserv.com 

Policy Prefix: EIG, WC, or DWC  that’s Employers / Cerity Insurance Companies.
Call: 888-682-6671
Email: Customersupport@employers.com

Policy Prefix: CBB, CSB, or CCB, that’s Benchmark Insurance Company or Spinnaker Insurance Company.
Claims administrator is Coterie Insurance Agency
Call: 855-680-2440 (Call 24 hours a day, 7 days/week)
Email: Claims@coterieinsurance.com

We are here if you need us!
Remember that the Thimble team is always here for you. 
Get in touch: support@thimble.com 

For general inquiries and all other support, send us a message here to reach our support team.

Updated June 01, 2026 15:34