The position on the choice-of-law validity of shareholders' agreements for Russian entities has developed significantly in Russian law. Russian courts have historically applied a restrictive approach to foreign-law shareholders' agreements in relation to Russian limited liability companies (OOO) and joint-stock companies (AO), particularly where the agreement purported to modify or restrict rights that are established by Russian corporate law as mandatory. The Supreme Court of the Russian Federation and legislative developments have progressively expanded the range of matters that can be regulated by shareholders' agreement — including tag-along and drag-along rights, pre-emption rights, and certain deadlock resolution mechanisms. The enforceability of specific provisions depends on the type of Russian entity, the subject matter of the clause, and whether the clause modifies a mandatory statutory provision. We advise on the enforceability of specific provisions and on the charter provisions that should supplement the shareholders' agreement to ensure that the intended governance arrangements are effective.