Key Points Perspective Therapeutics' major shareholder doubled down on the position, validating the business and pipeline. Liberty Live Group's SiriusXM stock is bought by Warren Buffett and Berkshire Hathaway. NB Bancorp is an aged institution that recently IPOd with great success; it is still undervalued. The threat of fines and imprisonment, up to twenty years for the worst offenders, makes insider trading a different game than what it was. Today, insiders must reveal their trading within days of executi ...