Aerion Corporation is in talks to go public through a merger with Altitude Acquisition Corp. (NasdaqCM:ALTU), according to people with knowledge of the matter. The companies are discussing a deal that would value the combined firm at up to $3 billion, said the people, who asked to not be identified because the matter isn’t public. A deal could be announced as soon as in February 2021, the people said. The talks could still fall apart and end without an agreement, they said. A spokesperson for Aerion declined to comment. A representative for Altitude Acquisition didn’t immediately respond to a request for comment.