The SEC amended four rules on bond trustees (ผู้แทนผู้ถือหุ้นกู้), effective 16 April 2027 (2570). Trustees can now act on a issuer default under the bond terms without calling a bondholder vote. The rules also tighten conflict-of-interest checks, set trustee qualifications, require trustees to report material events to the SEC, and define when a trustee's duties end. This only matters if your business issues or holds corporate bonds, or if you deal with bond markets. Otherwise no action is needed.