Tesla and SpaceX CEO Elon Musk started buying Twitter stock on an almost-daily basis in January.
By the spring, Musk had accumulated a 9.2% share in Twitter, making him its biggest shareholder. Shortly after, it was revealed that Musk was going to join its board.
Messages between Musk and Agrawal were released in September as part of a lawsuit Twitter filed against Musk.
"Hey Elon - great to be connected directly. Would love to chat," Agrawal said in a message to Musk on March 27.
Musk, Agrawal, and Twitter chair Bret Taylor met for a meal near San Jose on March 31.
"Great dinner :)," Musk messaged after.
"Memorable for multiple reasons," Agrawal texted. "Really enjoyed it."