This annual report by Lean In and McKinsey & Company analyzes data from hundreds of U.S.-based companies to assess women’s representation, advancement, and workplace experiences across corporate hierarchies. The 2023 edition examines persistent gender gaps in hiring, promotion, and leadership representation, with particular attention to intersectional disparities affecting women of color. It highlights structural challenges such as the “broken rung” at the first promotion to manager, uneven access to sponsorship, and workplace cultures that impact retention. The report also outlines employer practices associated with stronger gender equity outcomes, including leadership accountability, transparent promotion criteria, and inclusive workplace policies. While focused on corporate America, the findings provide broader insights into workforce representation, governance, and talent pipelines that are relevant to ESG analysis and gender lens investment strategies.