On September 30, 2020, Governor Gavin Newsom of California signed into law Assembly Bill No. 979, which will require boards of directors of publicly held companies headquartered in California to include a minimum number of persons from specified historically underrepresented communities on their boards of directors. The law, to be set forth in Section 301.4 of the California Corporations Code, will become effective on January 1, 2021, and companies within its scope must meet specified diversity requirements by December 31, 2021. Section 301.4 closely follows the structure of Section 301.3, which requires the same types of companies to maintain minimum female representation on their boards of directors. Although Section 301.4 may face similar legal challenges to those pending against Section 301.3, its enactment further underscores that board diversity remains an area of focus at numerous constituencies.