Pfizer didn't lie. If you go back to their press releases they were careful to distinguish SARS-CoV-2 from COVID-19, the result being that they said you wouldn't get sick while saying nothing of infection/spread. It was the media and politicians that started that.
So to say the clinical trials reflected absence of infection is a deliberate lie. Either they knew what the data said and lied, or they didn't know what the data said and stated they did, which is a lie.