Parties involved in or considering health care transactions in California have been focused on navigating the new rules set by California’s Office of Health Care Affordability (OHCA),[1] and newly proposed legislation could present additional challenges in consummating certain health care transactions, particularly those involving private equity. Introduced in February 2024, California’s Assembly Bill 3129 seeks to curb consolidation in the health care industry allegedly driven by private equity firms and hedge funds. As summarized in greater detail below, the bill would require that these parties obtain prior written consent from California’s Attorney General (AG) before an acquisition or change of control of many types of health care businesses and assets.