It was a very busy day at the U.S. Securities and Exchange Commission yesterday, with the commission weighing in on several proposed rule changes. For starters, the commission considered proposed amendments to Rule 10b5-1 and new disclosure requirements designed to prevent insider trading. Several SEC commissioners expressed their views on the measures. Commission Chairman Gary Gensler’s statement in support is here. The statements of commissioners Caroline A. Crenshaw, Allison Herren Lee, Hester M. Peirce and Elad L. Roisman, also in support, are here, here, here, and here, respectively.