SmartStop Self Storage REIT, Inc.

Code of

Ethics

Our board of directors adopted an amended Code of Ethics and Business Conduct on September 16, 2019 (the “Code of Ethics”), which contains general guidelines applicable to our executive officers, including our principal executive officer, principal financial officer and principal accounting officer, our directors and our employees. We adopted our Code of Ethics with the purpose of promoting the following: (1) honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships; (2) avoidance of conflicts of interest, including disclosure to an appropriate person or committee of any material transaction or relationship that reasonably could be expected to give rise to such a conflict; (3) full, fair, accurate, timely and understandable disclosure in reports and documents that we file with or submit to the SEC and the NYSE and in other public communications made by us; (4) compliance with applicable laws and governmental rules and regulations; (5) the prompt internal reporting of violations of the Code of Ethics to our Code of Ethics Compliance Officer; (6) accountability for adherence to the Code of Ethics; and (7) guidance to covered persons to help them recognize and deal with ethical issues. A copy of the Code of Ethics is available on our website www.smartstopselfstorage.com under About Us—Investor Relations—Governance. Pursuant to our Insider Trading Policy, our directors and executive officers may not enter into hedging or monetization transactions or similar arrangements with respect to our securities.