It's in writing.

- "7. About June 15, 2022, Respondent, by Gwynne Shotwell, through an email unlawfully restricted employees from distributing the Open Letter."

- "11. About June 16, 2022, Respondent, by Gwynne Shotwell, in an email to all employees announced that employees had been discharged for their involvement in the Open Letter."

https://cdn.arstechnica.net/wp-content/uploads/2024/01/CPT.3... (pdf)