Versions of 26 CFR 1.544-4 - Options on LawServer 2024 26 CFR 1.544-4 – Options 2023 26 CFR 1.544-4 – Options 2022 26 CFR 1.544-4 – Options 2021 26 CFR 1.544-4 – Options 2015 26 CFR 1.544-4 – Options 2014 26 CFR 1.544-4 – Options 2010 26 CFR 1.544-4 – Options 2009 26 CFR 1.544-4 – Options