Exhibit 99.1
 
JOINT FILING AGREEMENT
 
In accordance with Rule 13d-1(k) of the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including any and all amendments thereto) with respect to the Class A common stock $0.0001 par value per share of GMR Solutions Inc., and further agree that this Joint Filing Agreement shall be included as an Exhibit to such joint filing. In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement.
 
      
    
 
PEGASUS AGGREGATOR HOLDCO LLC
      
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Assistant Secretary
 
 
Date:
08/14/2026
 
 
      
 
PEGASUS AGGREGATOR PARENT LLC
      
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Assistant Secretary
 
 
Date:
08/14/2026
 
 
  
 
KKR GMR CONSOLIDATED AGGREGATOR LLC
 
By: KKR North America Fund XI (AMG) LLC, its managing member
 
By: KKR AMG Managing Member LLC, its managing member
 
    
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Assistant Secretary
 
 
Date:
08/14/2026
 
 
      
 
KKR NORTH AMERICA FUND XI (AMG) LLC
  By: KKR AMG Managing Member LLC, its managing member
      
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Assistant Secretary
 
 
Date:
08/14/2026
 
 
      
 
KKR AMG MANAGING MEMBER LLC
      
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Assistant Secretary
 
 
Date:
08/14/2026
 
 
1
      
 
HENRY R. KRAVIS
      
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Attorney-in-fact
 
 
Date:
08/14/2026
 
 
       
 
GEORGE R. ROBERTS
 
 
 
 
 
 
Signature:
/s/ Christopher Lee
 
 
Name/Title:
Christopher Lee, Attorney-in-fact
 
 
Date:
08/14/2026