Investors / Sie Ventures
Sie Ventures
Venture capital
Sie Ventures is a venture capital firm that backs early-stage, women-led startups, primarily in the UK and Europe. It also runs founder programs and a curated angel syndicate to support female founders through their fundraising journeys.
Invests inAI & Machine LearningHealthcare & Biotech
In its own wordsfemale foundersdiversityearly stagefemtechfintechsustainability
Your fit with Sie Ventures
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsSie Ventures lists 2 checked portfolio companies on its own site and is named in 2 funding rounds. Its most frequent entry is Seed, 100% of the companies with a known first round. Its largest themes are AI & Machine Learning (67%) and Healthcare & Biotech (33%). 100% of its companies are based in United Kingdom. It invests most often alongside 7percent Ventures, Blue Wire Capital and Boost VC.
Counts come from funding rounds that name Sie Ventures, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Entry stage
share of companies by the stage of its first roundShow as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 100% |
| Series A | 0% |
| Series B | 0% |
| Growth | 0% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 0 | 0 |
| '25 | 1 | 0 |
| '26 | 1 | 0 |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| 7percent Ventures | 1 |
| Blue Wire Capital | 1 |
| Boost VC | 1 |
| Female Founders Fund | 1 |
| Seraphim Space | 1 |
| THENA Capital | 1 |
| The Conduit Connect | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers2100%
- No longer answers00%
- Points to another company00%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 67% | 18% |
| Healthcare & Biotech | 33% | 15% |
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with 7percent Ventures
Compare Sie Ventures head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Funds
as stated on its siteRecent portfolio activity
when companies last raised with Sie Ventures| Date | Company | Stage |
|---|---|---|
| 26 May 2026 | Seed | |
| 19 Aug 2025 | Seed |
Round details for Sie Ventures
Amounts, full round histories and every co-investor in Sie Ventures' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
2 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Space DOTS provides intelligence and data analysis to help protect spacecraft from threats and disruptions | AI & Machine LearningAI & Machine Learning | Aug 2025Seed | Funding round | |
| Zonova engineers antimicrobial protection into devices | Healthcare & Biotech | May 2026Seed | Funding round |
About this data
site last read 5 Nov 2026- Site
- sie.ventures
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Rounds since
- 19 Aug 2025
- Companies checked
- 2
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
Get Sie Ventures' profile as data
Pull Sie Ventures' portfolio, co-investors and changes through one API key or MCP, open every portfolio row, compare it with other firms, and get an email when it adds a company or files a fund.
Work email, sign-in link by email. Already have an account? Log in- Ask AI5 plain-English investor searches a day
- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/sie.ventures
# also
GET /v1/firms/sie.ventures/portfolio
GET /v1/firms/sie.ventures/coinvestors
GET /v1/firms/sie.ventures/news