Advent Technologies stock moved to OTC Expert Market

Advent Technologies Holdings, Inc. reports that on July 20, 2026 it received a notification from OTC Markets Group that its common stock, par value $0.0001 per share, has been moved to the OTC Expert Market on an unsolicited quotes only basis.

Accepted by SEC EDGAR 07/22/2026 - 04:36 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Advent Technologies Holdings, Inc. reports that on July 20, 2026 it received a notification from OTC Markets Group that its common stock, par value $0.0001 per share, has been moved to the OTC Expert Market on an unsolicited quotes only basis. This change affects the market tier on which the company’s common stock is quoted.

Positive

• None.

Negative

• Common stock moved to OTC Expert Market on an unsolicited quotes only basis, indicating a change in the company’s quotation venue for its common stock.

8-K Event Classification

Item 8.01 — Other Events

1 item

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Key Figures

Notification date: July 20, 2026 Common stock par value: $0.0001 per share Company telephone: (925) 455-9400

3 metrics

Notification date July 20, 2026 Date Advent Technologies received notice of move to OTC Expert Market

Common stock par value $0.0001 per share Par value of Advent Technologies’ common stock affected by market move

Company telephone (925) 455-9400 Registrant’s telephone number listed in the disclosure

Key Terms

OTC Expert Market, unsolicited quotes only basis, Emerging growth company

3 terms

OTC Expert Market market

"common stock ... has been moved to the OTC Expert Market on an unsolicited quotes only basis"

An OTC expert market is an over-the-counter trading venue where securities that don’t meet the rules of main exchanges are bought and sold, and access is typically limited to professional or sophisticated investors. It matters to investors because these markets often have less public information, lower trading volume and higher price swings — like a specialized flea market where only experienced buyers trade rarer, riskier items, so potential reward and risk are both amplified.

unsolicited quotes only basis market

"has been moved to the OTC Expert Market on an unsolicited quotes only basis"

Emerging growth company regulatory

"405 of this chapter) or Rule 12b-2 ... Emerging growth company"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Advent Technologies Holdings (ADNH) disclose on July 20, 2026?

Advent Technologies Holdings disclosed that on July 20, 2026 it received a notification from OTC Markets Group that its common stock was moved to the OTC Expert Market on an unsolicited quotes only basis.

How is Advent Technologies (ADNH) common stock now quoted?

Advent Technologies’ common stock, par value $0.0001 per share, has been moved to the OTC Expert Market on an unsolicited quotes only basis, according to the notification from OTC Markets Group.

Who notified Advent Technologies (ADNH) about the market change?

Advent Technologies received a notification from OTC Markets Group stating that the company’s common stock had been moved to the OTC Expert Market on an unsolicited quotes only basis.

Which securities of Advent Technologies (ADNH) are affected by the change?

The change applies to Advent Technologies’ common stock, which has a par value of $0.0001 per share and has been moved to the OTC Expert Market on an unsolicited quotes only basis.

What is the par value of Advent Technologies (ADNH) common stock?

Advent Technologies’ common stock has a par value of $0.0001 per share. This common stock is the security that was moved to the OTC Expert Market on an unsolicited quotes only basis.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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): July 20, 2026

Advent Technologies Holdings, Inc.

(Exact name of registrant as specified in its charter)

Delaware		001-38742		83-0982969
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

5637 La Ribera Street

Suite A

Livermore, CA 94550

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (925) 455-9400

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:

☐	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))

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

Title of each class		Trading Symbol		Name of each exchange on which registered
N/A		N/A		N/A

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. ☐

Item 8.01 Other Events.

On July 20, 2026, Advent Technologies Holdings, Inc. (the “Company”), received a notification from the OTC Markets Group that the Company’s common stock, par value $0.0001 per share, has been moved to the OTC Expert Market on an unsolicited quotes only basis.

1

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: July 22, 2026

	Advent Technologies Holdings, Inc.
	By:	/s/ Gary Herman
	Name:	Gary Herman
	Title:	Chief Executive Officer

2

Filing Exhibits & Attachments

3 documents

Other Documents

• EX-101 XBRL SCHEMA FILE 3.0 KB
• EX-101 XBRL LABEL FILE 33.4 KB
• EX-101 XBRL PRESENTATION FILE 21.8 KB