Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Securities registered pursuant to Section 12(b) of the Act: Title of each class Name of eac ...

Exhibit 99.1 Professional Diversity Network, Inc. Announces Financial Results for the Quarter and Fiscal Year Ended December 31, 2023 Chicago, IL, March 29, 2024 (GLOBE NEWSWIRE) — Professional Diversity Network, Inc. (NASDAQ:IPDN), ("IPDN" or the "Company"), a global developer and operator of online and in-person networks that provides access to networking, training, educational and employment opportunities for diverse and specialized individuals, today announced its financial results for the fourth quarte ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) (State or Oth ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) Indicate by ...

Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 80-09001 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) (State or Oth ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 80-0900177 (State or Other Jurisdiction of Incorporation or Organization) 55 E. Monroe Street, Su ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to________ Commission file number: 001-35824 Professional Diversity Network, Inc. (Exact name of Registrant as Specified in Its Charter) (State or Other J ...