1) ANTHROPIC PBC

2) BNSF RAILWAY COMPANY

3) BRYAN CAVE LEIGHTON PAISNER LLP ON BEHALF OF ARCELORMITTAL LIBERIA LTD

4) CADMUS GROUP

5) COVINGTON & BURLING LLP ON BEHALF OF THE SHORTWAVE MODERNIZATION COALITION

6) FORTINET, INC.

7) GLOBAL SHIELD (FORMERLY SOCIAL AND ENVIRONMENTAL ENTREPRENEURS, INC.)

8) HIGHLAND ENGINEERING, INC.

9) JOHNSON & JOHNSON SERVICES, INC

10) MANTECH INTERNATIONAL CORPORATION

11) NATIONAL SPECTRUM CONSORTIUM, INC.

12) NIOCORP DEVELOPMENTS LTD

13) NOKIA OF AMERICA CORPORATION

14) SHI INTERNATIONAL CORP.

15) SOLVENTUM

16) TARANA WIRELESS, INC.

17) TRELLIX PUBLIC SECTOR LLC

18) UNITED SERVICES AUTOMOBILE ASSOCIATION (USAA)