A particularly strong insider buying signal is what we call a "cluster-buy" where three or more different insiders make open market purchases within a short period of one another. At Inhibikase Therapeutics Inc (IKT), 3 different insiders purchased 1,970,000 shares at an average price of $1.37/share, for a total of $2.7M, with the most recent purchase on October 21, 2024.