Anyone who owns stock shares of a company actually owns a tiny portion of the company.  As a partial owner, the shareholder has a right to submit proposals for all the stock owners to vote on.  Someone who does this is a shareholder advocate.  This work is not simple.  If possible, it involves meeting in advance with company board members to try to persuade them to support the proposal without further discussion.  If that fails, shareholder advocacy involves submitting the proper forms on time so that the proposal can be included on the electronic and printed ballots, and perhaps traveling to the company’s annual meeting to speak in favor of the proposal.

A much simpler method for individuals is to buy shares of a mutual fund that owns (or will buy) shares of the company, and that will take on the role of shareholder advocate.  Some mutual funds of this kind can be found on the internet.  These funds make a practice of advocating for ESG causes, including reducing climate change.  If such a fund is in an IRA, the IRA will not just sit there earning money, but will also support continuing advocacy.