Following is the unofficial transcript of a CNBC exclusive interview with SEC Chair Gary Gensler on CNBC’s “Power Lunch” (M-F, 2PM-3PM ET) today, Monday, March 21. Following is a link to video on CNBC.com: SEC Chief Gary Gensler On Agency’s Proposed Changes To Climate DisclosuresTYLER MATHISEN: Welcome back to “Power Lunch,” everybody. The SEC moving closer now to enacting a set of rules to make companies disclose metrics related to how their firms contribute to climate change. Bob Pisani has a “Power Lunch” exclusive with the Chair of the SEC, Gary Gensler. Bob? Q4 2021 hedge fund letters, co…