Strata was the corporation in control of Hope City during the events of Space Pilgrim Episode III: Delta Pavonis.
In Strata Space Port, Sabina White discovered a secret file which contained evidence that the company had been bribing employees who had suffered medical problems as a result of their mining work, even threatening to withhold insurance unless they agree to stay silent. They were also known to pay their employees very low wages.
Sabina delivered the secret files to Gail Pilgrim, who in turn handed them over to the Hope City Governor. These actions ultimately brought down the company.