Versions of 17 CFR 240.12b-2 - Definitions on LawServer 2024 17 CFR 240.12b-2 – Definitions 2023 17 CFR 240.12b-2 – Definitions 2022 17 CFR 240.12b-2 – Definitions 2021 17 CFR 240.12b-2 – Definitions 2016 17 CFR 240.12b-2 – Definitions 2015 17 CFR 240.12b-2 – Definitions 2014 17 CFR 240.12b-2 – Definitions 2010 17 CFR 240.12b-2 – Definitions 2009 17 CFR 240.12b-2 – Definitions.