The company raised $486.2 million in an equity offering, starting December, and another $535.7 million in an offering that began in April, its regulatory filings on Friday showed.
The rocket company on Thursday launched the first batch of 60 small satellites into low-Earth orbit for Musk's new Starlink internet service.
Musk sees the Starlink venture as an important new revenue stream for his California-based company, whose launch service income he expects to top out at around $3 billion a year.
At least 12 launches carrying similar payloads are needed to achieve constant internet coverage of most of the world, Musk said. For now, Starlink is only authorized for U.S. operations.
(Reporting by Akanksha Rana in Bengaluru; Editing by Anil D'Silva)