Investors / Spain / Addendum Capital
Addendum Capital
Venture capital · Madrid, Spain · Europe
Addendum Capital is an early-stage venture capital firm focused on B2B SaaS and technology companies. It invests in founders from the very early days and takes a hands-on approach, working closely with portfolio companies.
Invests inAI & Machine LearningCybersecurity
In its own wordsb2b saascybersecurityhealthtechdata analyticsagritechlogistics
Your fit with Addendum Capital
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsAddendum Capital lists 8 checked portfolio companies on its own site and is named in 3 funding rounds. Its most frequent entry is Seed, 67% of the companies with a known first round. Its largest themes are AI & Machine Learning (36%), Cybersecurity (29%) and Enterprise Software (14%). 40% of its companies are based in Spain. It invests most often alongside Adara Ventures, 4Founders Capital and Acurio Ventures.
Counts come from funding rounds that name Addendum Capital, 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 | 33% |
| Seed | 67% |
| 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 | 2 | 0 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 15th | 8 companies |
| Recent activity | 69th | 2 rounds in 12 months |
| Early stage | 100th | 100% of entries at pre-seed or seed |
| Evidence | 95th | 25% of companies confirmed by a round |
| Sector focus | 66th | 36% in its largest sector |
| Reach | 70th | 4 countries |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Adara Ventures | 2 |
| 4Founders Capital | 1 |
| Acurio Ventures | 1 |
| Alien Ventures | 1 |
| BiotechTown | 1 |
| Claret Capital Partners | 1 |
| Decelera | 1 |
| Fides Capital | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers8100%
- 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 | 36% | 18% |
| Cybersecurity | 29% | 4% |
| Enterprise Software | 14% | 8% |
| Healthcare & Biotech | 7% | 15% |
| E-commerce & Marketplaces | 7% | 6% |
| Space & Defense | 7% | 3% |
Co-investor network
who it backs companies with, and who they back togetherCompare Addendum Capital head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with Addendum Capital| Date | Company | Stage |
|---|---|---|
| 17 Apr 2026 | Seed | |
| 14 Jul 2025 | Seed |
Round details for Addendum Capital
Amounts, full round histories and every co-investor in Addendum Capital's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
8 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| The company offers a DNA testing kit that provides over 300 reports in six categories, including origins, nutrition, and personality | Healthcare & Biotech | Portfolio page | ||
| Auravant provides a digital agriculture platform to optimize operations and improve business efficiency | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| BforeAI provides a predictive cybersecurity platform that identifies and disrupts malicious infrastructure, phishing campaigns, and impersonation attempts before attacks occur. | CybersecurityEnterprise Software | Portfolio page | ||
| Gurusup builds a company's living brain and deploys AI workers to execute tasks across various tools and teams. | AI & Machine LearningEnterprise Software | Apr 2026Seed | Page + round | |
| Hornetsecurity provides security, backup, and compliance services for Microsoft 365 | CybersecuritySpace & Defense | Portfolio page | ||
| Kimera provides an AI-powered search engine for eCommerce websites to help customers find and compare products | E-commerce & MarketplacesAI & Machine Learning | Portfolio page | ||
| Kymatio provides cybersecurity training and a platform for businesses | Cybersecurity | Portfolio page | ||
| TandemTrace connects every SOC function into one autonomous operating layer | CybersecurityAI & Machine Learning | Jul 2025Seed | Page + round |
About this data
site last read 5 Nov 2026- Site
- addendum.capital
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 14 Jul 2025
- Companies checked
- 8
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 Addendum Capital's profile as data
Pull Addendum Capital's 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/addendum.capital
# also
GET /v1/firms/addendum.capital/portfolio
GET /v1/firms/addendum.capital/coinvestors
GET /v1/firms/addendum.capital/news