The request was made late on Tuesday and comes in a lawsuit filed by the FTC that has asked the court to order both of those deals undone. Facebook bought Instagram for $1 billion in 2012 and WhatsApp for $19 billion in 2014.
The FTC sued Meta's Facebook in 2020, during the Trump administration, alleging that the company acted illegally to maintain its social network monopoly.
Facebook is fighting the lawsuit, and wants the materials as part of that fight.
"Both the Instagram and the WhatsApp documents are almost certain to reveal that the FTC determined that each acquisition was unlikely to lessen competition or harm consumers," Facebook said in its filing.
The company argued that the FTC had given the documents to the House Judiciary Committee when it probed the tech giants, also including Amazon, Alphabet's Google and Apple. Current FTC Chair Lina Khan was on the staff of that committee.
"Any claim of privilege was waived when the FTC chose to voluntarily share the documents with House Judiciary Committee members and staff," Facebook said in its filing.
The FTC did not immediately respond to a request for comment on the filing.
Among the documents being requested are the memos that the FTC Bureau of Competition and Bureau of Economics wrote for commissioners about whether the Instagram deal should be allowed to close. Meta is also asking for notes made by Bureau of Competition personnel about the WhatsApp transaction.
(Reporting by Diane Bartz; Editing by Tomasz Janowski)