Professional Diversity Network effects 1-for-30 reverse split; adjusted trading starts September 14

Professional Diversity Network, Inc. (Nasdaq: IPDN) effected a one-for-thirty reverse stock split at 5:30 p.m. Eastern Time on September 11, 2026, according to its Friday Form 8-K, accession number 0001437749-26-030185. The split leaves authorized common shares and par value unchanged, rounds fractional shares up and assigns the stock a new CUSIP, 74312Y509. Split-adjusted trading on the Nasdaq Capital Market is scheduled to begin September 14.

FACT: Friday effectiveness, Monday trading transition

Professional Diversity Network's filing separates the legal effective time from the start of split-adjusted exchange trading. The reverse split became effective at 5:30 p.m. Eastern Time on Friday, September 11; the common stock will begin trading on a split-adjusted basis at the start of trading on Monday, September 14, under the existing IPDN symbol. The new CUSIP number is 74312Y509.

The company filed a certificate of amendment with the Delaware Secretary of State on September 11. It acted under authority from a special meeting of stockholders held July 13, 2026, and board action taken August 26, 2026. The Form 8-K reports the charter amendment and reverse split in Item 5.03 and incorporates that information into Item 3.03, covering material modifications to security holders' rights.

Those dates matter to the chronology: this is a Friday-effective corporate action documented in a Friday filing, following a Thursday press release. The September 14 trading transition is a separate step in implementing the split.

FACT: What changes for common shareholders

The one-for-thirty ratio consolidates outstanding common shares. The charter amendment does not change the total number of common shares the company is authorized to issue, and the common stock's par value remains $0.0001 per share. Authorized shares and outstanding shares are distinct figures; the reduction in outstanding shares does not represent a reduction in the company's authorized share count.

No fractional shares will be issued. The filing says post-split common shares are rounded up to the nearest whole share. That rounding provision is also relevant when reading the company's estimated post-split share count: the release's approximate total is subject to adjustment for fractional-share rounding.

Transhare Corporation, the company's transfer agent, is acting as exchange agent. Stockholders holding shares electronically in book-entry form, or through a bank, broker or other nominee, do not need to take action. Transhare will provide instructions to stockholders of record who hold certificated shares. These instructions distinguish the handling of electronic holdings from the process for physical certificates.

FACT: August Common Warrants have a separate adjustment provision

The reverse split results in proportionate adjustments to the shares issuable on exercise or conversion of outstanding equity awards, options, warrants and other convertible or exercisable securities. Applicable exercise or conversion prices also adjust under the terms of the relevant plans, agreements or securities.

The filing specifically identifies the Common Warrants issued August 13, 2026. For those warrants, the reverse split constitutes a “Share Combination Event.” Their exercise price and the number of common shares issuable upon exercise will be adjusted under the warrants' Share Combination Event provisions. The company says it will provide notice of the applicable adjustments in accordance with the warrant notice provisions.

The filing does not supply concrete post-adjustment exercise-price dollar amounts or warrant share counts. The disclosed event establishes that the contractual adjustment provisions apply; it does not provide the numerical outcome for readers to use as a confirmed warrant term.

CONTEXT: The press release's share estimate

In its September 10 press release, Professional Diversity Network said it had 19,974,323 common shares issued and outstanding as of September 9. Based on that count, it expected approximately 665,811 shares to be issued and outstanding immediately after the reverse split, subject to adjustment from fractional-share rounding. That is a company estimate in the advance announcement, not a guaranteed final post-split count.

Item 8.01 of the Form 8-K identifies the September 10 announcement, files it as Exhibit 99.1 and incorporates it by reference. The filing also includes a forward-looking-statements caution concerning the release. The release's expected timing should therefore be read alongside Item 5.03, which reports the September 11 effective time of the charter amendment.

In the release's company description, Professional Diversity Network calls itself a technology holding company operating businesses across workforce solutions, remote talent and artificial intelligence. That description is company-provided context. Its discussion of PDN Intelligence exploring AI infrastructure and GPU-powered computing does not establish completed expansion or related revenue.

UNKNOWN: Final counts and warrant terms

The remaining numerical questions are the final common-share count after rounding and the applicable adjustments for the August Common Warrants. Neither is supplied as a confirmed final number in this accession. The documented next trading milestone is September 14; the disclosed warrant process calls for company notice under the existing warrant provisions.

Filing reference

Professional Diversity Network, Inc. disclosed the reverse stock split in Form 8-K AccNo 0001437749-26-030185 (Items 3.03, 5.03, 8.01, and 9.01; Effective Time 5:30 p.m. Eastern Time September 11, 2026; Filing Date September 11, 2026).