After something of a slow year in 2022, mergers and acquisition (M&A) activity is ramping back up in the pharma and biotech sector. There have been several especially large M&A deals in the past few months. Examples include Pfizer’s (NYSE:PFE) $43 billion acquisition of Seagen, and Merck’s (NYSE:MRK) $11 billion purchase of Prometheus Biosciences. In December…