my e2 is annotated that i work for the company i have established here in the US, is this mandatory and do i need an EAD as well as the E2 visa

The E2 visa only allows you to work for the company that you have established here in the US. You are not authorized to work for any other organization. An E2 visa is a working visa and you are not required to obtain an EAD to work under E2 status. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.