Facebook General Counsel Colin Stretch, one of the social media representatives scheduled to appear before Senate and House Intelligence committees and a Senate Judiciary subcommittee this week, wrote to investigators he estimates "that 29 million people were served content directly from the Internet Research Agency, and that after sharing among users is accounted for, a total of 'approximately 126 million people' may have seen it."
CNN:
Stretch also says in his testimony that Facebook estimates 11.4 million people saw ads purchased by the Internet Research Agency between 2015 and 2017. But the full, organic reach of content posted by the troll farm-linked pages was more than 10 times higher.
The House Intelligence Committee has said it will release the ads to the public, possibly later this week.
Read more: Facebook estimates 126 million people were served content from Russia-linked pages (CNN)