Exhibit 99.1

 

JOINT FILING AGREEMENT

 

The undersigned hereby agree that the statement on Schedule 13D with respect to the Shares of ProAssurance Corp. dated as of June 30, 2026 is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the previsions of Rule13d-1(k) under the Securities Exchange Act of 1934, as amended.

 

Date: June 30, 2026 magnetar financial llc
   
  By: Magnetar Capital Partners LP, its Sole Member
     
  By: /s/ Hayley Stein
  Name: Hayley Stein
  Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC, GP of Magnetar Capital Partners LP, its Sole Member
     
Date: June 30, 2026 magnetar capital partners LP
     
  By: Supernova Management LLC, its General Partner
     
  By: /s/ Hayley Stein
  Name: Hayley Stein
  Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC, its General Partner
     
Date: June 30, 2026 supernova management llc
     
  By: /s/ Hayley Stein
  Name: Hayley Stein
  Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC
     
Date: June 30, 2026 DAVID J. SNYDERMAN
     
  By: /s/ Hayley Stein
  Name: Hayley Stein
  Title: Attorney-in-fact for David J. Snyderman