Northern Data AG
Northern Data AG is a German stock corporation (Aktiengesellschaft) registered with the Amtsgericht Frankfurt am Main under HRB 106465, with its registered office at An der Welle 3, 60322 Frankfurt am Main. The register shows the company as active. Northern Data AG operates as the parent holding company of the Northern Data Group, a provider of artificial-intelligence infrastructure and GPU-based cloud computing services.
The Group’s two principal operating units are Taiga Cloud, which offers GPU-as-a-service and sovereign AI cloud infrastructure to enterprise and research customers, and Ardent Data Centers, which designs, builds and operates high-density, liquid-cooled data-center facilities used to house that GPU capacity. According to the company’s own investor-relations disclosures, the Group operates roughly ten infrastructure sites across Europe and North America with a combined IT load capacity in the region of 250 megawatts.
The entity registered under HRB 106465 has a long corporate history under several different names and business models. Register filings show it was incorporated on 17 March 2008 as Capital Three AG, before being renamed AMP Biosimilars AG (2014), Biosilu Healthcare AG (2017), and Northern Bitcoin AG (January 2018), when the shell was repurposed for cryptocurrency mining. Following a 2019 business combination with U.S. Bitcoin-mining infrastructure operator Whinstone US, the company was renamed Northern Data AG in January 2020 and repositioned around high-performance computing and, subsequently, AI/GPU cloud infrastructure. The 1 January 2008 incorporation date sometimes shown for this record reflects only the year of first registration rather than the exact date; the verified incorporation date is 17 March 2008.
Northern Data AG shares (ISIN DE000A0SMU87, WKN A0SMU8, ticker NB2) trade on Xetra and the Frankfurt, Berlin, Düsseldorf, Hamburg and Hannover exchanges, on Tradegate, and in the m:access transparency segment of the Munich Stock Exchange’s open market. In 2025, U.S. video and technology company Rumble Inc. (subsequently renamed RUM Group Inc.) agreed to acquire Northern Data AG through a voluntary public exchange offer reported at approximately US$767 million; the offer completed in June 2026. Following completion, the Munich Stock Exchange set a delisting timeline for the shares (25 June 2026), and on 10 September 2026 the company announced a forthcoming corporate-law squeeze-out procedure affecting the remaining free-float shares. For the second quarter of 2026, Northern Data Group reported revenue of approximately EUR 54 million and adjusted EBITDA of approximately EUR 23 million, alongside a EUR 251 million adverse fair-value adjustment tied to contingent consideration from the earlier disposal of its Peak Mining business.
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Shareholders
Shareholders of Northern Data AG
As a company listed on German exchanges, Northern Data AG’s shareholder register is not fully public; the record instead reflects statutory notifications of major holdings under the German Securities Trading Act (WpHG), together with a small number of Directors’ Dealings filings. The single largest disclosed holding is that of Rumble Deutschland AG, a German subsidiary of the U.S.-listed RUM Group Inc. (formerly Rumble Inc.), which completed a voluntary public exchange offer for Northern Data AG shares in June 2026. Under the terms of that offer and related contractual agreements, Rumble Deutschland AG is expected to hold approximately 98.03% of Northern Data AG’s issued share capital around 30 September 2026, according to the company’s own ad-hoc disclosure dated 10 September 2026. Earlier Directors’ Dealings notices dated 30 June 2026 also record individual exchange-offer participants, including Supervisory Board chairman Dr. Tom Oliver Schorling (20,770 shares exchanged) and Liebling Kronberg Capital GmbH (63,363 shares exchanged), both at a ratio of one Northern Data share to 2.0281 RUM Group Inc. Class A common shares. No percentage figures for shareholders other than Rumble Deutschland AG are disclosed in the sources reviewed.
Ultimate beneficial ownership
No natural-person UBO has been identified for Northern Data AG in the sources reviewed. Following completion of the Rumble exchange offer, effective control sits with Rumble Deutschland AG’s ultimate parent, RUM Group Inc., a US-listed company; establishing a natural-person UBO at that level would require RUM Group Inc.’s own beneficial-ownership disclosures, which fall outside this record’s scope.
Data availability
Shareholder information for Northern Data AG is Major shareholders only: German-listed companies disclose only holdings that cross statutory WpHG notification thresholds and reportable Directors’ Dealings transactions, not a complete shareholder register. The information above is current as of the company’s 10 September 2026 ad-hoc announcement and the 30 June 2026 Directors’ Dealings notices; it will change once the announced squeeze-out under Sections 327a et seq. AktG is registered.
Sources
- Northern Data AG, “Notice by Rumble Deutschland AG regarding an upcoming squeeze-out under German Stock Corporation Law”, 10 September 2026 — northerndata.de
- Northern Data AG, Directors’ Dealings notifications, 30 June 2026 — northerndata.de
- Northern Data AG investor relations, stock information page — northerndata.de
Officers
19
Directors and officers of Northern Data AG
Northern Data AG’s Management Board (Vorstand) and Supervisory Board (Aufsichtsrat) underwent significant change during 2026 in connection with RUM Group Inc.’s acquisition of the company. Co-CEO and Whinstone-era founder Aroosh Thillainathan stepped down from the Management Board in June 2026, and the company’s Chief Financial Officer moved to an advisory role effective 28 May 2026. On 18 July 2026, the company announced that Rudolf Haas, Group Chief Legal Officer since 2024 and a former partner and Frankfurt managing director at King & Wood Mallesons, was appointed to the Management Board. On the Supervisory Board, Bertram Pachaly and Dr. Bernd Hartmann resigned effective 17 July 2026, and Dr. Tyler Hughes (Chief Operating Officer of RUM Group Inc. since August 2021) and Stephen Noonan (Executive Vice President of Corporate Development at RUM Group Inc. since 2021) were appointed effective 18 July 2026 as representatives of the new indirect majority shareholder; both stood for re-election at the 25 August 2026 Annual General Meeting. Dr. Tom Oliver Schorling continues to chair the Supervisory Board. The sources reviewed do not confirm a complete current Management Board roster beyond Rudolf Haas’s July 2026 appointment, so this overview should not be read as exhaustive.
Recent officer changes
- 17 July 2026 — Supervisory Board members Bertram Pachaly and Dr. Bernd Hartmann resigned.
- 18 July 2026 — Dr. Tyler Hughes and Stephen Noonan, both RUM Group Inc. executives, appointed to the Supervisory Board.
- 18 July 2026 — Rudolf Haas, Group Chief Legal Officer since 2024, appointed to the Management Board.
Data availability
Germany discloses Management Board and Supervisory Board appointments through ad-hoc and corporate-news filings rather than a continuously updated public register entry, so this overview reflects the most recently disclosed changes rather than a guaranteed-complete current roster. Nationality is not disclosed for any individual named above and is not inferred from name, residence or reported role.
Sources
- Northern Data AG, “Changes to the Supervisory Board and the Management Board”, 18 July 2026 — northerndata.de
- Northern Data AG, “Northern Data AG holds Annual General Meeting”, 25 August 2026 — northerndata.de
- Northern Data AG investor relations, leadership updates — northerndata.de
Registry feed — rows exactly as filed with Handelsregister (Commercial Register), including entries the profile above does not cover.
Group Structure
Group structure of Northern Data AG
Northern Data AG is the parent holding company of the Northern Data Group and, according to the company’s own group registry data, directly or indirectly controls operating entities in Germany, Ireland, the Netherlands, Norway, Sweden, the United Kingdom, Portugal and the United States, including Taiga Cloud Limited (Ireland) and its Dutch, UK and Portuguese units, Northern Data Software GmbH (Germany) and its Norwegian and Swedish units, Northern Data US, Inc., Northern Data Services (UK) Limited, Northern Data NL B.V., Northern Data Nor AS, Decentric Europe B.V., Bitfield N.V. and ND CS (Services) GmbH, among others. Following completion of a voluntary public exchange offer in June 2026, Northern Data AG itself became a controlled subsidiary: Rumble Deutschland AG, a German entity within the RUM Group Inc. (formerly Rumble Inc., Nasdaq-listed) group, is expected to hold approximately 98.03% of Northern Data AG’s shares around 30 September 2026, making RUM Group Inc. the company’s ultimate parent. A minority squeeze-out of the remaining Northern Data AG shareholders was announced on 10 September 2026 but had not been registered as of that date.
Verified corporate relationships
| Entity | Country | Registration number | Relationship | Ownership | Status | Information date |
|---|---|---|---|---|---|---|
| RUM Group Inc. (formerly Rumble Inc.) | US | Not disclosed in reviewed sources | Ultimate parent | Indirect, ~98.03% via Rumble Deutschland AG | Active | 10 Sep 2026 |
| Taiga Cloud Limited | IE | IE 746734 | Direct subsidiary | Ownership percentage not disclosed | Active | 11 Aug 2026 |
| Northern Data Software GmbH | DE | DE 60313B119359 | Direct subsidiary | Ownership percentage not disclosed | Active | 11 Aug 2026 |
| Northern Data US, Inc. | US | VA 5369010 | Direct subsidiary | Ownership percentage not disclosed | Active | 11 Aug 2026 |
| Northern Data Services (UK) Limited | GB | GB 09027295 | Direct subsidiary | Ownership percentage not disclosed | Active | 11 Aug 2026 |
Recent structural changes
- June 2026 — RUM Group Inc. (formerly Rumble Inc.) completed a voluntary public exchange offer, becoming Northern Data AG’s indirect majority shareholder via Rumble Deutschland AG.
- 10 September 2026 — Rumble Deutschland AG announced its intention to squeeze out Northern Data AG’s remaining minority shareholders under Sections 327a et seq. AktG.
Data availability
The subsidiary list above reflects the company’s own group registry data as of 11 August 2026 and has not been independently re-verified against each subsidiary’s local commercial register; ownership percentages within the subsidiary chain are not disclosed in the sources reviewed. Identification of RUM Group Inc. as ultimate parent is well-evidenced for the change-of-control fact itself, but Partial for the exact registration details of RUM Group Inc.
Sources
- Northern Data AG group registry data, last synced 11 August 2026
- Northern Data AG, “Notice by Rumble Deutschland AG regarding an upcoming squeeze-out under German Stock Corporation Law”, 10 September 2026 — northerndata.de
- Wikipedia, “Rumble (company)” — rebrand to RUM Group Inc., June 2026
Registry feed — rows exactly as filed with Handelsregister (Commercial Register), including entries the profile above does not cover.
Northern Data AG
Germany
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Frequently Asked Questions
What does Northern Data AG do?
Northern Data AG is the German parent company of the Northern Data Group, an AI and GPU cloud infrastructure business built around two units, Taiga Cloud (GPU-as-a-service and sovereign AI cloud) and Ardent Data Centers (data-center design and operation), operating roughly ten sites across Europe and North America with a self-reported IT load capacity of about 250 megawatts.
Where is Northern Data AG registered?
Northern Data AG is registered with the Amtsgericht Frankfurt am Main, Germany, under commercial register number HRB 106465, with its registered office at An der Welle 3, 60322 Frankfurt am Main.
Did Northern Data AG previously operate under a different name?
Yes. Register filings show the entity was incorporated in 2008 as Capital Three AG, renamed AMP Biosimilars AG in 2014, Biosilu Healthcare AG in 2017, Northern Bitcoin AG in January 2018 when it pivoted to cryptocurrency mining, and Northern Data AG in January 2020 following a 2019 business combination with U.S. Bitcoin-mining infrastructure operator Whinstone US.
Is Northern Data AG a publicly traded company?
Yes. Northern Data AG shares (ISIN DE000A0SMU87, WKN A0SMU8, ticker NB2) trade on Xetra and the Frankfurt, Berlin, Düsseldorf, Hamburg and Hannover exchanges, on Tradegate, and in the m:access transparency segment of the Munich Stock Exchange's open market.
Who is acquiring Northern Data AG?
In 2025, U.S. company Rumble Inc. (renamed RUM Group Inc. in June 2026) agreed to acquire Northern Data AG through a voluntary public exchange offer reported at approximately US$767 million; the offer completed in June 2026.
What percentage of Northern Data AG does Rumble / RUM Group now control?
According to Northern Data AG's own 10 September 2026 disclosure, its subsidiary Rumble Deutschland AG is expected to hold approximately 98.03% of Northern Data AG's share capital around 30 September 2026.
Is Northern Data AG going to be delisted?
The Munich Stock Exchange announced a timeline for delisting Northern Data AG shares on 25 June 2026, following completion of the Rumble exchange offer, and on 10 September 2026 the company announced a planned squeeze-out of its remaining minority shareholders under Sections 327a et seq. of the German Stock Corporation Act (AktG).
Who are Northern Data AG's current Management Board members?
Rudolf Haas, Group Chief Legal Officer since 2024, was appointed to the Management Board effective 18 July 2026. Co-CEO Aroosh Thillainathan stepped down from the Management Board in June 2026 and the Chief Financial Officer moved to an advisory role in May 2026; the sources reviewed do not confirm a complete current Management Board roster.
Who chairs Northern Data AG's Supervisory Board?
Dr. Tom Oliver Schorling chairs the Supervisory Board, per the company's 2026 Annual General Meeting disclosures.
What changes were made to Northern Data AG's Supervisory Board in 2026?
Bertram Pachaly and Dr. Bernd Hartmann resigned effective 17 July 2026. Dr. Tyler Hughes and Stephen Noonan, both RUM Group Inc. executives, were appointed effective 18 July 2026 to represent the new indirect majority shareholder, and stood for re-election at the 25 August 2026 Annual General Meeting.
What are Northern Data AG's main operating subsidiaries?
Per the company's group registry data, direct and indirect subsidiaries include Taiga Cloud Limited (Ireland) and its Dutch, UK and Portuguese units, Northern Data Software GmbH (Germany) and its Norwegian and Swedish units, Northern Data US, Inc., Northern Data Services (UK) Limited, Northern Data NL B.V., Northern Data Nor AS, Decentric Europe B.V., Bitfield N.V. and ND CS (Services) GmbH.
What was Northern Data Group's most recent reported revenue?
For the second quarter of 2026, Northern Data Group reported revenue of approximately EUR 54 million (versus EUR 0.6 million in Q2 2025) and adjusted EBITDA of approximately EUR 23 million, alongside a EUR 251 million adverse fair-value adjustment tied to contingent consideration from its earlier Peak Mining business disposal.
Has Northern Data AG disclosed a beneficial owner (UBO)?
No natural-person Ultimate Beneficial Owner has been identified for Northern Data AG in the sources reviewed; following the Rumble exchange offer, effective control sits with the US-listed RUM Group Inc., whose own beneficial-ownership disclosures fall outside this record.