https://www.investors.com/news/technology/pfizer-stock-buy-now/
"The U.S. government agreed to buy 100 million doses and has an option to buy 500 million more. Pfizer and BioNTech also have deals in Japan and Canada. Further, they have a deal to supply up to 300 million vaccine doses to the European Commission."
https://money.usnews.com/investing/stock-market-news/articles/2020-07-22/pfizer-vaccine-deal-microsofts-strong-performance
Pfizer Inc. (PFE): Today, Pfizer, the pharmaceutical company and BioNTech (BNTX) have both announced an agreement with the U.S. government to place an "initial order of 100 million doses for $1.95 billion and acquire 500 million additional doses" to begin delivering a vaccine for the coronavirus to Americans in 2021, according to Pfizer's press release.