Argo Blockchain (NASDAQ: ARBK) details ADS ratio, 2026 notes

Rhea-AI Filing Summary

Argo Blockchain plc has completed a significant technical change to its share structure and confirmed key terms for a planned debt transaction. On December 12, 2025, the company adjusted the ratio of its ordinary shares to American Depositary Shares (ADSs) from 10:1 to 2,160:1, so that each ADS now represents 2,160 ordinary shares. Nasdaq also announced that the effective date for the previously disclosed redemption and mandatory exchange of Argo’s 8.75% senior notes due 2026 will be December 15, 2025, with noteholders receiving 0.835001875 American Depositary Receipts (evidencing ADSs) per $25 principal amount of notes, plus accrued and unpaid interest. The company highlights that statements about the anticipated redemption and exchange are forward-looking and subject to risks described in its prior annual filings.

Insights

Capital markets analyst

Argo aligns its ADS structure and clarifies mechanics for a mandatory note exchange.

Argo Blockchain reports two coordinated capital markets steps. First, it has completed a change in the ratio of ordinary shares to American Depositary Shares from 10:1 to 2,160:1, meaning each ADS now represents 2,160 ordinary shares. This is an accounting and trading convention change for how its equity is represented in U.S. markets rather than a change to total underlying ownership.

Second, Nasdaq has announced that the effective date for the previously announced redemption and mandatory exchange of the company’s 8.75% senior notes due 2026 will be December 15, 2025. The redemption rate is set at 0.835001875 American Depositary Receipts per $25.00 principal amount of notes, plus accrued and unpaid interest, and is expressed after the new ADS ratio. This clarifies how noteholders will receive equity-linked consideration, while the company reminds readers that outcomes remain subject to the risks outlined in its prior annual filings.

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

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December, 2025

Commission File Number: 001-40816

_____________________

Argo Blockchain plc

(Translation of registrant’s name into English)

_____________________

Eastcastle House

27/28 Eastcastle Street

London W1W 8DH

England

(Address of principal executive office)

_____________________

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 ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

EXHIBIT INDEX

Exhibit No.      1 Description Bond Exchange dated 12 December 2025

Press Release

12 December 2025

Argo Blockchain plc

("Argo" or "the Company")

Updates Regarding Full Redemption and Mandatory Exchange of 8.75% Senior Notes due 2026

The Company announces that on the morning of Friday, December 12, 2025, the Company completed its previously announced ratio change of its ordinary shares ("Shares") to American Depositary Share ("ADSs"), to adjust the ratio from 10:1 to 2,160:1, so that one ADS will represent 2,160 Shares.

Also on the morning of Friday, December 12, 2025, Nasdaq announced on NasdaqTrader.com that the effective date for the Company's previously announced redemption and exchange of its 8.75% senior notes due 2026 (CUSIP: 040126 203) will be December 15, 2025, and that the redemption rate will be 0.835001875 American Depositary Receipts (evidencing ADSs of the Company) per $25.00 in principal amount of Notes (plus accrued and unpaid interest). This redemption rate is expressed on a post-adjustment basis, after giving effect to the ratio change described above. 

Enquiries:

ARGO
Email:	ir@argoblockchain.com

About Argo:

Argo Blockchain plc (NASDAQ: ARBK) is a blockchain technology company focused on large-scale cryptocurrency mining. With a mining facility in Quebec and offices in the US, Canada, and the UK, Argo's global, sustainable operations are predominantly powered by renewable energy. In 2021, Argo became the first climate positive cryptocurrency mining company, and a signatory to the Crypto Climate Accord. For more information, visit www.argoblockchain.com.

Forward looking statements

This announcement contains "forward-looking statements," which can be identified by words like "may," "will," "likely," "should," "expect," "anticipate," "future," "plan," "believe," "intend," "goal," "seek," "estimate," "project," "continue" and similar expressions. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on the Company's current beliefs, expectations and assumptions regarding the future of its business, future plans and strategies, projections, anticipated events and trends, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict and many of which are outside of the Company's control. The information in this announcement about the Company's anticipated redemption and mandatory exchange of its 2026 Notes are forward-looking statements. Therefore, you should not rely on any of these forward-looking statements. Important factors that could cause the Company's actual results and financial condition to differ materially from those indicated in the forward-looking statements include market conditions; the Company's ability to implement the Restructuring Plan on the expected timeline or at all; the ability to retain the Company's listing on Nasdaq; operational, financial, regulatory, tax and legal risks; assumptions underlying revenue, EBITDA and valuation estimates; and the principal risks and uncertainties described in the risk factors set forth in the Company's Annual Report and Financial Statements and Form 20-F for the year ended 31 December 2024.

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.

Date: 12 December, 2025 ARGO BLOCKCHAIN PLC By: /s/ Justin Nolan Name: Justin Nolan Title: Chief Executive Officer

FAQ

What did Argo Blockchain plc (ARBK) change about its ADS structure?

Argo Blockchain plc changed the ratio of its ordinary shares to American Depositary Shares from 10:1 to 2,160:1, so that one ADS now represents 2,160 ordinary shares.

How are Argo Blockchains 8.75% senior notes due 2026 being redeemed and exchanged?

The company has a previously announced redemption and mandatory exchange of its 8.75% senior notes due 2026, under which noteholders will receive American Depositary Receipts evidencing ADSs of the company.

What is the redemption rate for Argo Blockchains 2026 senior notes?

The redemption rate is 0.835001875 American Depositary Receipts per $25.00 in principal amount of notes, plus accrued and unpaid interest, calculated after the ADS ratio change to 2,160:1.

When is the effective date of the redemption and mandatory exchange of Argo Blockchains 2026 notes?

Nasdaq announced that the effective date for the redemption and mandatory exchange of the 8.75% senior notes due 2026 will be December 15, 2025.

When did Argo Blockchain complete its ADS ratio change?

The company completed the change in the ratio of ordinary shares to ADSs on the morning of Friday, December 12, 2025.

What business is Argo Blockchain plc (ARBK) engaged in?

Argo Blockchain plc is a blockchain technology company focused on large-scale cryptocurrency mining, with operations in Quebec and offices in the US, Canada, and the UK.

What risks does Argo Blockchain highlight regarding the 2026 note redemption and exchange?

The company notes that information about the anticipated redemption and mandatory exchange of its 2026 notes is forward-looking and subject to risks, including market conditions, its ability to implement a Restructuring Plan, retain its Nasdaq listing, and other risks described in its Annual Report, Financial Statements, and Form 20-F for the year ended 31 December 2024.