Venture Capital

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SIS Ventures

SIS Ventures, the impact-investing arm of Social Investment Scotland, manages an early-stage portfolio of biotech and medtech companies from Edinburgh.

SIS Ventures logo

SIS Ventures

SIS Ventures is a wholly-owned subsidiary of Social Investment Scotland. It has made 30 investments, including a Series B investment in Dxcover on February 03, 2025. SIS Ventures has one portfolio exit, Trojan Energy, which exited on February 10, 2026.

General information

Firm type

Venture Capital

Year founded

2018

AUM

Undisclosed

Location

Region

Europe

Country

United Kingdom

City

Edinburgh

Corporate office

Edinburgh, United Kingdom

Sector focus

Medical TechnologyBiotechnology

Frequently asked questions

Who runs investment decisions at SIS Ventures?

SIS Ventures does not publicly name an investment committee or designated CIO on its website. Decision-making authority ultimately resides within the broader Social Investment Scotland group governance structure, which is overseen by a board of directors. Without disclosed principals, the specific individuals approving capital allocations remain opaque to outside allocators.

Is SIS Ventures structured as a family office or a conventional venture firm?

Neither. SIS Ventures is a subsidiary of the charity Social Investment Scotland, a social enterprise lender. It is authorized by the Financial Conduct Authority and operates as an impact-focused private equity manager inside a charitable group, which is structurally distinct from both family-office and standard limited-partner VC models.

Does SIS Ventures participate in fund commitments or only direct deals?

Based on its disclosed portfolio — which lists only direct operating companies such as Nami Surgical and MiAlgae — the firm appears to make direct equity investments into enterprises rather than committing to external funds. No fund-of-funds activity is publicly disclosed.

What investment stages does SIS Ventures target?

The firm's mandate covers both early-stage and growth-stage companies, as classified in its strategy documentation. Its two named portfolio companies are both in pre-profit, technology-commercialization phases, consistent with a venture-capital posture that extends into early growth.

Is SIS Ventures currently making new investments?

No. The firm's website explicitly states it is not currently making new investments and is focused on managing its existing portfolio. As of mid-2026, no update has been published indicating a reopening to new deals, making the firm effectively inactive for fresh capital deployment.

How does SIS Ventures measure and verify its impact claims?

SIS Ventures engaged the Global Ethical Finance Initiative to independently verify its alignment with the Operating Principles for Impact Management. This external audit confirms that its impact-management systems and processes meet a recognized institutional standard, providing a layer of accountability beyond self-reported metrics.

What regions does SIS Ventures operate in?

The firm's investments are concentrated in Scotland, with its headquarters in Edinburgh and its parent charity's operations rooted in Scottish social enterprise. No investments outside the United Kingdom have been publicly disclosed.

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