INNOVATIVE INDUSTRIAL PROPERTIES INC (0001677576) (Filer)

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): November 2, 2026

Innovative Industrial Properties, Inc.

(Exact name of registrant as specified in its charter)

1389 Center Drive, Suite 200

Park City, Utah 84098

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code: (858) 997-3332

Former name or former address, if changed since last report: Not Applicable

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 (see General Instruction A.2. below):

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Securities Registered pursuant to Section 12(b) of the Act:

Item 2.02 Results of Operations and Financial Condition.

On November 2, 2026, Innovative Industrial Properties, Inc. (the “Company”) issued a press release regarding its financial results for the third quarter ended September 30, 2026. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

On November 2, 2026, the Company posted on its website, www.innovativeindustrialproperties.com, certain supplemental financial information for the third quarter ended September 30, 2026, which is attached hereto as Exhibit 99.2 and is incorporated by reference herein.

The information contained in this Current Report, including Exhibits 99.1 and 99.2 referenced herein, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act.

Item 7.01 Regulation FD Disclosure.

On November 2, 2026, the Company posted an investor presentation on its website located at www.innovativeindustrialproperties.com. A copy of the investor presentation is attached hereto as Exhibit 99.3 and is incorporated by reference herein.

The information contained in this Current Report, including Exhibits 99.1, 99.2 and 99.3 referenced herein, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section. Such information shall not be deemed to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits

SIGNATURES

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.