6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

For the month of, December 2025

Commission File Number 001-40848

GUARDFORCE AI CO., LIMITED

(Translation of registrant’s name into English)

10 Anson Road, #28-01 International Plaza

Singapore 079903

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F: Form 20-F ☒ Form 40-F ☐

Other Events

On December 12, 2025, Guardforce AI Co., Limited (the “Company”) received a notification letter (the “Notification Letter”) from the Nasdaq Stock Market LLC (the “NASDAQ”) dated December 12, 2025, notifying the Company that it is not in compliance with the minimum bid price requirement as set forth under NASDAQ Listing Rule 5550(a)(2) for continued listing on the NASDAQ.

NASDAQ Listing Rule 5550(a)(2) requires listed securities to maintain a minimum bid price of US$1.00 per share, and Listing Rule 5810(c)(3)(A) provides that a failure to meet the minimum bid price requirement exists if the deficiency continues for a period of 30 consecutive business days. Based on the closing bid price of the Company’s ordinary shares for the 30 consecutive business days from October 30 through December 11, 2025, the Company no longer meets the minimum bid price requirement. In accordance with the NASDAQ Listing Rule 5810(c)(3)(A), the Company has been provided 180 calendar days, or until June 10, 2026, to regain compliance with NASDAQ Listing Rule 5550(a)(2).

To regain compliance, the Company’s ordinary shares must have a closing bid price of at least US$1.00 for a minimum of 10 consecutive trading days. In the event that the Company does not regain compliance by June 10, 2026, the Company may be eligible for additional time to regain compliance or may face delisting. The receipt of the Notification Letter has no immediate effect on the listing of the Company’s ordinary shares, which will continue to trade uninterrupted on NASDAQ under the ticker “GFAI”. To address this issue, the Company intends to continuously monitor its closing bid price and is in the process of considering various measures to improve its financial position and results of operations, which the Company expects to countervail the short-term adverse effects on its trading price and cure the deficiency in due time.

On December 17, 2025, the Company issued a press release announcing that it has received the Notification Letter from NASDAQ. A copy of that press release is attached as Exhibit 99.1 hereto.

This report on Form 6-K is incorporated by reference into (i) the prospectus contained in the Company’s registration statement on Form F-3 (SEC File No. 333-261881) declared effective by the Securities and Exchange Commission (the “Commission”) on January 5, 2022; (ii) the prospectus dated February 9, 2022 contained in the Company’s registration statement on Form F-3 (SEC File No. 333-262441) declared effective by the Commission on February 9, 2022; (iii) the prospectus contained in the Company’s Post-Effective Amendment No. 1 to Form F-1 on Form F-3 (SEC File No. 333-258054) declared effective by the Commission on June 14, 2022; and (iv) the prospectus contained in the Company’s registration statement on Form F-3 (SEC File No. 333-284261) declared effective by the Securities and Exchange Commission (the “Commission”) on January 24, 2025

1

EXHIBIT INDEX

2

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, thereunto duly authorized.

3

Exhibit 99.1

Guardforce AI Announces Receipt of Nasdaq MinimumBid

Price Deficiency Notification Letter

NEW YORK, NY / December 17, 2025 / GuardforceAI Co., Limited (“Guardforce AI” or the “Company”) (NASDAQ: GFAI, GFAIW), an AI-driven technology company providing smart solutions in automation, robotics, Agentic AI and secured logistics, today announced that it has received a notification letter (“Notification Letter”) from the Nasdaq Stock Market LLC (“NASDAQ”) dated December 12, 2025, notifying the Company that it is not in compliance with the minimum bid price requirement as set forth under NASDAQ Listing Rule 5550(a)(2) which requires listed securities to maintain a minimum bid price of US$1.00 per share for continued listing on the NASDAQ, and Listing Rule 5810(c)(3)(A) provides that a failure to meet the minimum bid price requirement exists if the deficiency continues for a period of 30 consecutive business days. This press release is issued pursuant to NASDAQ Listing Rule 5810(b), which requires prompt disclosure upon the receipt of a deficiency notification.

In accordance with the NASDAQ Listing Rule 5810(c)(3)(A), the Company has been provided 180 calendar days, or until June 10, 2026, to regain compliance with NASDAQ Listing Rule 5550(a)(2).

To regain compliance, the Company’s ordinary shares must have a closing bid price of at least US$1.00 for a minimum of 10 consecutive trading days. In the event that the Company does not regain compliance by June 10, 2026, the Company may be eligible for additional time to regain compliance or may face delisting.

The receipt of the Notification Letter has no immediate effect on the listing of the Company’s ordinary shares, which will continue to trade uninterrupted on NASDAQ under the ticker “GFAI”.

To address this issue, the Company intends to continuously monitor its closing bid price and is in the process of considering various measures to improve its financial position and results of operations, which the Company expects to countervail the short-term adverse effects on its trading price and cure the deficiency in due time.

About Guardforce AI Co., Ltd.

Guardforce AI (Nasdaq: GFAI, GFAIW) is an AI-driven technology company with a solid operational foundation in the cash logistics and retail sectors. Through its proprietary Intelligent Cloud Platform (ICP), Guardforce AI delivers next-generation smart solutions and AI applications spanning cash management, retail automation, robotics, and Agentic AI. Expanding into areas such as travel planning, the Company is demonstrating how scalable AI can drive industry transformation, balancing stable, recurring revenues with high-growth, future-ready innovations. For more information, visit www.guardforceai.com Twitter: @Guardforceai.

Safe Harbor Statement

This press release contains statements thatdo not relate to historical facts but are “forward-looking statements” within the meaning of the safe harbor provisions ofthe U.S. Private Securities Litigation Reform Act of 1995. These statements can generally (although not always) be identified by theiruse of terms and phrases such as anticipate, appear, believe, continue, could, estimate, expect, indicate, intend, may, plan, possible,predict, project, pursue, will, would and other similar terms and phrases, as well as the use of the future tense. Forward-looking statementsare neither historical facts nor assurances of future performance. Instead, they are based only on current beliefs, expectations and assumptionsregarding the future of the business of the Company, future plans and strategies, projections, anticipated events and trends, the economyand other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risksand changes in circumstances that are difficult to predict and many of which are outside of our control, including the risks describedin our registration statements and annual reports under the heading “Risk Factors” as filed with the Securities and ExchangeCommission. Actual results and financial condition may differ materially from those indicated in the forward-looking statements. Therefore,you should not rely on any of these forward-looking statements. Forward-looking statements in this press release speak only as of thedate hereof. Unless otherwise required by law, we undertake no obligation to publicly update or revise these forward-looking statements,whether because of new information, future events or otherwise.

Investor Relations:

David Waldman or Natalya Rudman

Crescendo Communications, LLC

Email: gfai@crescendo-ir.com

Tel: 212-671-1020

Guardforce AI Corporate Communications

Hu Yu

Email: yu.hu@guardforceai.com