MRK’s CEO—(and EVP)—sold $24.5M of stock since Opdivo news on 8/5/16: https://www.sec.gov/Archives/edgar/data/310158/000122520816037553/xslF345X03/doc4.xml https://www.sec.gov/Archives/edgar/data/310158/000122520816037707/xslF345X03/doc4.xml