(b) A voting trust becomes effective on the date the first shares subject to the trust are registered in the trustee's name. A voting trust is valid for not more than ten years after its effective date unless extended under subsection (c) of this section.
(c) All or some of the parties to a voting trust may extend it for additional terms of not more than ten years each by signing written consent to the extension. An extension is valid for ten years from the date the first shareholder signs the extension agreement. The voting trustee must deliver copies of the extension agreement and list of beneficial owners to the corporation's principal office. An extension agreement binds only those parties signing it.