what is the purpose of rule 105b 1 
rule 105b 1 lets company insiders sell their company s stock provided they set up a predetermined plan and certify that they do not have access to material nonpublic information about the company or its securities who is affected by rule 105b 1 rule 105b 1 applies to insiders in a publicly traded company these include directors and senior officers as well as entities and individuals that own more than 10 of the company s voting shares 