In a year of significant pinches to law firms’ sources of income, all four Pennsylvania-based law firms in the Am Law Second Hundred lost ground in their annual ranking of U.S. law firms by revenue.

Buchanan Ingersoll & Rooney, Saul Ewing Arnstein & Lehr, Marshall Dennehey Warner Coleman Goggin and Eckert Seamans Cherin & Mellott each dropped slightly in the 2021 ranking compared to 2020, Am Law 200 data released Tuesday from ALM Intelligence and The American Lawyer shows.