Always keep your contact information up to date. Upon a change, contact Public Storage's transfer agent, Computershare, at (781) 575-3120, or access your account online at www.computershare.com to update your address of record or your dividend payee information. Do not rely solely on forwarding by the US Postal Service.
This video, created by Computershare, provides a great overview of the escheatment process and highlights the specific actions you can take to keep your account active and avoid escheatment.
https://www.computershare.com/us/individuals/unclaimed-property/keep-whats-yours
Contact Public Storage's transfer agent Computershare Shareholder Services toll-free at (877) 373-6374 or international at (781) 575-2879 for questions and information regarding your escheated property.