Professional Diversity Network, Inc.

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 15, 2026

PROFESSIONAL DIVERSITY NETWORK, INC.

(Exact name of registrant as specified in its charter)

55 E. Monroe Street, Suite 2120, Chicago, Illinois 60603

(Address of principal executive offices)

Registrant’s telephone number, including area code: (312)614-0950

N/A

(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 (see General Instruction A.2. below):

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

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☐

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. ☐

On May 15, 2026, the Company issued a press release announcing its financial and operational results for the three months ended March 31, 2026. The press release is attached as Exhibits 99.1 to this Current Report on Form 8-K (this “Form 8-K”) and is incorporated herein by reference.

The information contained in this Form 8-K provided under Items 2.02 and 7.01 and Exhibits 99.1 attached hereto are furnished to, but shall not be deemed filed with, the U.S. Securities and Exchange Commission or incorporated by reference into the Company’s filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended.

Reference is made to the disclosure in Item 2.02 of this Form 8-K, which disclosure is incorporated herein by reference.

Forward-Looking Statements

Exhibit 99.1 attached hereto contain, and may implicate, forward-looking statements regarding the Company, and include cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated.

(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.