Current Report · Items 7.01, 9.01 · 8-K

Greene County Bancorp, Inc.

GCBCNASDAQEQUITYCurrent

Regulation FD Disclosure

Filed Jun 22, 2026Accepted Jun 22, 2026, 3:43 PM EDTCIK 1070524Accession 0001140361-26-025931

Company context

Greene County Bancorp, Inc. is the holding company for the Bank of Greene County, and its subsidiary Greene County Commercial Bank. The Company is the leading provider of community-based banking services throughout the Hudson Valley and Capital Region of New York State. Its customers include individuals, businesses, municipalities and other institutions. Greene County Bancorp, Inc. (GCBC) is publicly traded on the Nasdaq Capital Market and is dedicated to promoting economic development and a high quality of life in the communities it serves. For more information on Greene County Bancorp, Inc., visit www.tbogc.com.

Current securities

GCBCNASDAQ · EQUITY · Current

Recent company filings

Disclosure sections

Items 7.01, 9.01

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Item 7.01Item 7.01 - Regulation FD Disclosure

Item 7.01 Regulation FD Disclosure The management of Greene County Bancorp, Inc. (the “Company”) intends to participate in meetings with institutional investors and other interested parties during the second quarter of 2026 to discuss the Company’s strategies, recent performance, and trends. The investor presentation prepared by the Company for use in these meetings is available on the Company’s website at www.thebankofgreenecounty.com under Investor Relations and “Events & Presentations.” Investors should note that the Company announces material information in Securities and Exchange Commission (the “SEC”) filings and press releases. This investor presentation is furnished pursuant to Item 7.01 of Form 8-K and shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”), as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, whether made before or after the date of this report, except as shall be expressly set forth by specific reference in such filing. The investor presentation is furnished as Exhibit 99.1 to this report.

Filed exhibits (1)

EX-99.1 (by filename) ef20076582_ex99-1.htm

EX-99.1 2 ef20076582_ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 June 2026 Investor Presentation 2 Forward-Looking Statements / Non-GAAP Disclosures Forward-Looking Statements This presentation contains statements about future events that constitute forward-looking statements, as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by references to a future period or periods or by the use of the words “believe,” “expect,” “anticipate,” “intend,” “estimate,” “assume,” “will,” “should,” “could,” “plan,” and other similar terms of expressions. Forward-looking statements should not be relied on because they involve known and unknown risks, uncertainties and other factors, many of which are beyond the Company’s control. These risks, uncertainties and other factors may cause the actual results, performance or achievements expressed in, or implied by, the forward-looking statements to differ materially from those contemplated by the forward-looking statements. Factors that may cause such a difference include, but are not limited to, local, regional, national and international general economic conditions, including actual or potential…

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