Open Philanthropy did donate $30M to OpenAI in 2017, and got in return the board seat that Helen Toner occupied until very recently. However, that was when OpenAI was a non-profit, and was done in order to gain some amount of oversight and control over OpenAI. I very much doubt any EA has donated to OpenAI unconditionally, or at all since then.
Open Philanthropy did donate $30M to OpenAI in 2017, and got in return the board seat that Helen Toner occupied until very recently. However, that was when OpenAI was a non-profit, and was done in order to gain some amount of oversight and control over OpenAI. I very much doubt any EA has donated to OpenAI unconditionally, or at all since then.