UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): May 20, 2015

SmartStop Self Storage, Inc.

(Exact name of registrant as specified in its charter)

Commission File Number: 000-53644

111 Corporate Drive, Suite 120, Ladera Ranch, California 92694

(Address of principal executive offices, including zip code)

(877) 327-3485

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indemnification Agreements

On and effective as of May 20, 2015, SmartStop Self Storage, Inc. (the “Company”) entered into indemnification agreements with each of its directors and executive officers (each, an “Indemnitee”), each in substantially the form attached hereto as Exhibit 10.1. The indemnification agreements obligate the Company, if an Indemnitee is or is threatened to be made a party to, or witness in, any proceeding by reason of such Indemnitee’s status as a present or former director, trustee, officer, partner, manager, member, fiduciary, employee or agent of the Company, or as a director, trustee, officer, partner, manager, member, fiduciary, employee or agent of another entity that the Indemnitee served in such capacity at the Company’s request, to indemnify such Indemnitee, and advance expenses actually and reasonably incurred by him or her, or on his or her behalf, unless it has been established that:

In addition, except as described below, an Indemnitee is not entitled to indemnification pursuant to the indemnification agreement:

Notwithstanding the limitations on indemnification described above, on application by an Indemnitee to a court of appropriate jurisdiction, the court may order indemnification of such Indemnitee if the court determines that such Indemnitee is fairly and reasonably entitled to indemnification in view of all the relevant circumstances, whether or not the Indemnitee (a) has met the standard of conduct set forth above, or (b) has been adjudged liable for receipt of an improper personal benefit. Under Maryland law, any such indemnification is limited to the expenses actually and reasonably incurred by the Indemnitee, or on his or her behalf, in connection with any proceeding by or on behalf of the Company or in which the Indemnitee was adjudged liable for receipt of an improper personal benefit. If the court determines that the Indemnitee is so entitled to indemnification, the Indemnitee will also be entitled to recover from the Company the expenses of securing such indemnification.

Notwithstanding, and without limiting, any other provision of the indemnification agreements, if an Indemnitee is made a party to any proceeding by reason of such Indemnitee’s status as a present or former director, trustee, officer, partner, manager, member, fiduciary, employee or agent of the Company, or as a director, trustee, officer, partner, manager, member, fiduciary, employee or agent of another entity that the Indemnitee served in such capacity at the Company’s request, and such Indemnitee is successful, on the merits or otherwise, as to one or more (even if less than all) claims, issues or matters in such proceeding, the Company must indemnify such Indemnitee for all expenses actually and reasonably

incurred by him or her, or on his or her behalf, in connection with each successfully resolved claim, issue or matter, including any claim, issue or matter in such a proceeding that is terminated by dismissal, with or without prejudice.

In addition, the indemnification agreements require the Company to advance reasonable expenses incurred by an Indemnitee within ten days of the receipt by the Company of a statement from the Indemnitee requesting the advance, provided the statement evidences the expenses and is accompanied by:

The indemnification agreements also provide for procedures for the determination of entitlement to indemnification, including a requirement that such determination be made by independent counsel after a change of control of the Company.

The foregoing summary is qualified in its entirety by reference to the full text of the form of Indemnification Agreement attached as Exhibit 10.1 hereto and incorporated herein by reference.

Amendment to Bylaws

On and effective as of May 20, 2015, the Board of Directors of the Company adopted an amendment to the Company’s Amended and Restated Bylaws to add a forum selection provision. The forum selection provision generally provides that unless the Company consents in writing to the selection of an alternative forum, the Circuit Court for Baltimore City, Maryland, or, if that Court does not have jurisdiction, the United States District Court for the District of Maryland, Baltimore Division, will be the sole and exclusive forum for (a) any derivative action or proceeding brought on behalf of the Company, (b) any action asserting a claim of breach of any duty owed by any director or officer or other employee of the Company to the Company or to the stockholders of the Company, (c) any action asserting a claim against the Company or any director or officer or other employee of the Company arising pursuant to any provision of the Maryland General Corporation Law or the Company’s charter or bylaws, or (d) any action asserting a claim against the Company or any director or officer or other employee of the Company that is governed by the internal affairs doctrine.

The foregoing summary is qualified in its entirety by reference to the full text of Amendment No. 1 to the Amended and Restated Bylaws, a copy of which is attached as Exhibit 3.1 hereto and incorporated herein by reference.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXHIBIT INDEX