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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) | October 22, 2025

PEAPACK-GLADSTONE FINANCIAL CORP ORATION

(Exact Name of Registrant as Specified in Charter)

New Jersey | 001-16197 | 22-3537895
(State or Other Jurisdiction | (Commission | (I.R.S. Employer
of Incorporation) | File Number) | Identification No.)

500 Hills Drive, Suite 300, Bedminster, New Jersey | 07921
(Address of Principal Executive Offices) | (Zip Code)

Registrant’s telephone number, including area code | (908) 234-0700

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

Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
Common Stock, no par value |  | PGC |  | The NASDAQ Stock Market, LLC

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):

| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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. ☐

INFORMATION TO BE INCLUDED IN THE REPORT

Item 2.02 Results of Operations and Financial Condition.

On October 22, 2025, Peapack-Gladstone Financial Corporation (the "Company") issued a press release reporting earnings and other financial results for the three and nine months ended September 30, 2025. A copy of the press release is attached to this Current Report on Form 8-K as Exhibit 99.1 and is incorporated by reference in its entirety.

The information disclosed under this Item 2.02, including Exhibit 99.1, shall be considered “furnished” but not “filed” for purposes of the Securities Exchange Act of 1934, as amended.

Item 7.01 Regulation FD Disclosure.

The Company is furnishing presentation materials included as Exhibit 99.2 to this report. The Company is not undertaking to update this presentation. The information in this report (including Exhibit 99.1) is being furnished pursuant to Item 7.01 and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section. This report will not be deemed an admission as to the materiality of any information herein (including Exhibit 99.2).

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. |  | Title
99.1 |  | Press Release dated October 22, 2025.
99.2 |  | Investor Presentation used by the Company for the third quarter of 2025.
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document)

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.

| PEAPACK-GLADSTONE FINANCIAL CORPORATION
Dated: October 22, 2025 | By: | /s/ Frank A. Cavallaro
| Frank A. Cavallaro
| Senior Executive Vice President and Chief Financial Officer