Very much so. The United States government provided $1 billion in support for the design and testing of the Moderna vaccine. Researchers at the National Institutes of Health oversaw much of the research, including the clinical trials. Moderna also received an additional $1.5 billion in exchange for 100 million doses if the vaccine proved to be safe and effective.
Although Pfizer has its own advance purchase agreement for its vaccine, it did not take Operation Warp Speed money to support its design or testing.