A person becomes a member of a limited liability company at: The time the limited liability company is formed; A later time specified in the operating agreement; or The time specified in § 4A–902(b) of this title relating to continuation of the limited liability company after there are no remaining members. After the formation of a limited liability company, a person may be admitted as a member: In the case of a person acquiring a membership interest directly from the limited liability company, upon compliance with the operating agreement or, if the operating agreement does not so provide, upon the unanimous consent of the members; In the case of an assignee of the economic interest of a member, only as provided in § 4A–604 of this subtitle; or In the case of a successor to the last remaining member who is not an assignee of the last remaining member, as provided in § 4A–902(b) of this title. Unless otherwise agreed, a person may be admitted as a member of a limited liability company and may be the sole member of a limited liability company without: Making a capital contribution to the limited liability company; Being obligated to make a capital contribution to the limited liability company; or Acquiring an economic interest in the limited liability company.