While there is a famous baseball pitcher with the same name, I'm assuming you're interested in the writer.
Dan Petry, the writer, is known for his work on the following projects:
Film:
* The Revenant (2015) - Co-writer
* The Dead Don't Die (2019) - Writer
* The Many Saints of Newark (2021) - Co-writer
Television:
* The Americans (2013-2018) - Writer, executive producer
* The Blacklist (2013-present) - Writer (one episode)
Please let me know if you're looking for information about a different Dan Petry.