
Blykalla stock
Blykalla is a Swedish company that develops small modular reactors (SMRs) using liquid lead as a coolant. Their reactor, SEALER (Swedish Advanced Lead Reactor), is designed to deliver clean and scalable baseload power with high safety.
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Note: Share price is from each company's latest known share issue. The change compares it with the previous issue and does not account for splits or differing share classes.
Blykalla new issues and valuations
| Date | Type | Share price | Valuation The company's valuation after the funding round was completed (Post-money). | Amount The specific amount raised in this funding round. |
|---|---|---|---|---|
| Q4 2025 | Share issuance | 7,166 SEK | SEK 1,130,100,000 | Locked |
| Q1 2025 | Share issuance | 5,325 SEK | SEK 656,400,000 | Locked |
| Q4 2024 | Share issuance | 5,325 SEK | SEK 614,900,000 | Locked |
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Note: Information on Blykalla's funding rounds, amounts, and valuation is sourced from news media and public sources unless otherwise stated. Information on capital structure is sourced from public company registers unless otherwise stated.
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What an account unlocks
Every completed transaction in Blykalla, with date and price per share.
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Blykalla is a Swedish company that develops small modular reactors (SMRs) using liquid lead as a coolant. Their reactor, SEALER (Swedish Advanced Lead Reactor), is designed to deliver clean and scalable baseload power with high safety.
Note: Information on Blykalla is sourced from official channels and public sources unless otherwise stated.
Major Shareholders in Blykalla
| Owner | Share |
|---|---|
| Janne Wallenius | 16.80 % |
| R-boats SA | 11.65 % |
| Daniel Aegerter | 9.20 % |
| Stockholmslauncher Fund I AB | 6.27 % |
| 92 Ventures | 4.76 % |
Source: Eivora (9/25/2026) · Information on Blykalla's ownership structure is sourced from public company registers and external data providers unless otherwise stated.
Blykalla key figures
| Key figures (SEK) | 2025 | 2024 | 2023 |
|---|---|---|---|
| Income statement | |||
| Net sales | 3,431,000 | 5,575,000 | 7,598,000 |
| Operating result (EBIT) | -105,310,000 | -50,610,000 | -24,348,000 |
| EBITDA | -105,071,000 | -50,455,000 | -24,124,000 |
| Net profit for the year | -104,516,000 | -49,308,000 | -23,597,000 |
| Balance sheet | |||
| Total assets | 560,498,000 | 155,362,000 | 71,157,000 |
| Cash and bank | 444,902,000 | 72,803,000 | 47,251,000 |
| Current liabilities | 45,807,000 | 26,662,000 | 7,854,000 |
| Ratios | |||
| EBITDA margin | -221.2 % | -143.4 % | -285.1 % |
| Equity ratio | 82.9 % | 82.8 % | 89.0 % |
| Employees | 38 | 33 | 15 |
Figures come from the company's filed annual reports.
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News about Blykalla
Blykalla testar SEALER-teknik i Oskarshamn
Vid CET 2026 i Oskarshamn bjöd svenska kärnkraftsbolaget Blykalla in till studiebesök i sin nya testanläggning för avancerade reaktorer. Under konferensen höll Blykallas vice president Thérèse Burman även ett anförande om företagets kärnreaktor SEALER, och hur den kan bidra till samhället på flera nivåer.Text: Pierre EklundFoto: Pierre Eklund, Blykalla, och Amanda Wagner Lindkvist
Länsstyrelsen bjuder in till samråd om ny kärnkraft i Norrsundet
I Norrsundet, utanför Gävle, planeras en ny kärnteknisk anläggning. Företaget Blykalla AB har ansökt om att få bygga sex små kärnreaktorer på platsen. Nu vill Länsstyrelsen Gävleborg veta vad allmänheten tycker om planerna.
Hedemora utredd för kärnkraft – tre platser granskades
Så blev svaret – två platser vid Dalälven och en vid Grycken
What Does Microsoft (MSFT) Gain From Using AI In Nuclear Reactor Licensing?
Microsoft (NasdaqGS:MSFT) and Swedish nuclear company Blykalla announced a partnership to apply AI to nuclear reactor licensing processes. The collaboration will use Microsoft's GenAI for Energy Permitting Solution Accelerator within Blykalla's regulatory workflows in Sweden and the U.S. The project targets faster permitting and licensing for advanced nuclear reactors, a frequent bottleneck for clean energy deployment timelines. Microsoft's work with Blykalla on AI driven nuclear permitting...
Blykalla och Microsoft samarbetar kring AI-driven kärnkraftslicensiering
Kärnkraftsbolaget Blykalla samarbetar med Microsoft för att använda generativ AI och AI-agenter för att påskynda tillstånds- och licensieringsprocessen för den blykylda kärnreaktorn SEALER i Sverige och USA. Det framgår av ett pressmeddelande.
Blykalla and Microsoft Collaborate to Advance AI-driven Nuclear Licensing for its Lead-Cooled Advanced Nuclear Reactor
Microsoft Azure tool and workflows to accelerate the permitting and licensing of Blykalla's advanced modular reactors in Sweden and the United...
Reactor company plans Austin hiring as it opens engineering hub
Blykalla is opening an Austin office at 801 Barton Springs Road as it builds out its U.S. engineering and reactor development center. The Swedish nuclear reactor company plans to hire about 15 employees in Austin by the third quarter of next year.
Swedish nuclear reactor company Blykalla opens Austin office
Blykalla is hiring in Austin as it expands its U.S. engineering operations amid growing demand for nuclear energy.
Blykalla Seeks Swedish State Aid for a 440 MWe SMR Plant
Swedish developer Blykalla has filed for state support for a plant at Untra featuring up to eight lead-cooled small modular reactors totalling 440 MWe, following an earlier May application for Norrsundet.
FAQ
Blykalla has raised a total of SEK 446 million in capital, according to our records. The amount raised in each funding round is shown once you create an account.
In its latest share issue, in November 2025, Blykalla was valued at SEK 1.13 billion post-money. The price was SEK 7,166 per share.
The largest shareholders in Blykalla are Janne Wallenius (16.80 %), R-boats SA (11.65 %), and Daniel Aegerter (9.20 %). The figures come from Eivora and were last updated in September 2026.
In 2025, Blykalla had revenue of SEK 3.43 million. It reported a loss of SEK 105 million for the year.
The CEO of Blykalla is Jacob Stedman. The board is chaired by Erik Engellau-Nilsson.
Blykalla is an unlisted company, meaning the shares are not traded on any exchange. Instead, transactions take place through direct transfers between parties, known as secondary trading, typically via a specialised platform for unlisted shares such as Accumeo. For larger international companies, investing through fund structures that pool several investors into a single ownership vehicle is also common. This allows smaller minimum investments and opens up access to international companies for non-institutional investors.
Yes, it is possible to buy existing shares in Blykalla through secondary trading. On Accumeo you create a free account, submit an expression of interest with an amount and any conditions, and may then be matched with a seller. Once both parties have signed the customer agreement, a share transfer agreement is drawn up covering price, share count, and settlement date.
Yes, secondary trading is often the only realistic route to liquidity for an unlisted holding before an IPO or acquisition. Via Accumeo you submit an expression of interest with a share count and target price, and a match may be made with a potential buyer. The sale is executed through a share transfer agreement and registered either via Euroclear or directly in the company's share register, depending on how ownership is administered.
Unlisted companies have no continuous share price because there is no continuous exchange trading. The value is instead based on the latest secondary-market trade or on the price per share from the most recent share issuance. Accumeo shows both historical transaction prices and current bid/ask quotes, providing a combined reference point for pricing.
The value of an unlisted share is most often based on the latest trade — the price buyer and seller agreed in a transaction — or on the latest funding round, where the company and its investors agreed a price for the newly issued shares. These are the reference points shown on Accumeo's platform. It is, however, important to form your own view of value by examining the company's prospects. Financial reports, growth opportunities, market position, and comparable transactions in the sector all help to build a better picture of how the business may develop. Useful information can be found on the company's own website, via Accumeo's platform, and on services like allabolag.se.
No, Blykalla is an unlisted company and its shares are not traded on the Stockholm Stock Exchange, NYSE, or any other regulated marketplace. Shares are instead traded through secondary trading between investors, typically via a specialised platform such as Accumeo.
No. Blykalla keeps its own share register, usually through a digital service. You are entered there when ownership transfers, rather than the shares arriving in your brokerage account — ownership is just as binding, but it will not appear at your usual broker.
Yes. The articles of association carry transfer restrictions, giving existing shareholders the right to take over the shares ahead of an outside buyer. Expect the transfer to take around 30 days longer while that runs its course.
Disclaimer: The information in this FAQ is provided for informational purposes only and does not constitute an offer to buy or sell securities, a solicitation of such an offer, or investment advice. Accumeo has no commercial relationship with the companies whose securities are mentioned. Independent advice should be obtained before making any investment decision.
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