The FSA and the Serious Organised Crime Agency have charged four men with insider dealing between November 2006 and March 2010.
Senior corporate broker Martyn Dodgson, Andrew Hind, Benjamin Anderson and Iraj Parvizi were bailed to attend Westminster Magistrates’ Court on 19 October.
The charges have been brought following a long-running joint investigation by the FSA and SOCA known as Operation Tabernula.
The four men were first arrested in March 2010. The FSA has so far secured 20 convictions for insider dealing.