Stockholders or other interested parties who wish to communicate with our board of directors or specific individual directors may do so by letter sent to our principal executive offices at 50 Beale Street, 8th Floor San Francisco, CA 94105, addressed to the attention of our Corporate Secretary. Our Corporate Secretary reviews all communications and forwards them to the intended recipient(s) consistent with a screening policy, which provides that sales materials, routine items, and items unrelated to the duties and responsibilities of the board of directors are not relayed to directors.