> BLACKMINNIS LIMITED LIABILITY COMPANY District of Columbia Since: 2023 BLACKMINNIS LIMITED LIABILITY COMPANY
> BERT W. SMITH, JR. & CO., CHARTERED District of Columbia Since: 1948 BERT W. SMITH, JR. & CO., CHARTERED
> ASSISTANCE RESEARCH INSTITUTE INC. District of Columbia Since: 2023 ASSISTANCE RESEARCH INSTITUTE INC.
> WASHINGTON OPPORTUNITY INSTITUTE LLC District of Columbia Since: 2014 WASHINGTON OPPORTUNITY INSTITUTE LLC