# Martin Kõiva

> Martin Kõiva is a pre-seed investor at Klaus (Tallinn) backing Software and Audio. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Klaus](https://shizune.co/investors/profile/klaus)
- Location: Tallinn, Estonia
- Total investments: 4
- Last investment: Sep 2025
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/martinkoiva/
- X (Twitter): https://twitter.com/k6iva

Martin Kõiva is a pre-seed investor at Klaus in Tallinn focused on Software and Audio. Martin Kõiva is the Co-Founder and CEO at Klaus.

## Round sizes

| Stage | Round size |
| --- | --- |
| Pre-Seed | $450k–$1.3M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 50% |
| Audio | 1 | 25% |
| Video | 1 | 25% |
| Consumer | 1 | 25% |
| Smart Home | 1 | 25% |

15 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Pre-Seed | 3 | 75% |
| Seed | 1 | 25% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 2 | 50% |
| Estonia | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Saltfish | Saltfish enables teams to develop tailored video experiences that guide users through your entire funnel, from first visit to feature adoption. | $730K | Seed | Sep 09, 2025 |  |
| Lutso | Lutso is an AI-powered aging-in-place solution that helps older adults live independently for longer. Using computer vision and thermal imaging, it detects changes in daily behavior and emergencies - extending quality years at home. | $1.3M | Pre-Seed | Feb 01, 2025 |  |
| Esgrid | Esgrid provides value-chain sustainability management solutions to medium-sized businesses and financial institutions. | $543.2K | Pre-Seed | Jan 26, 2024 |  |
| Corner Renovation | With Corner, homeowners get access to pre-designed home renovation kits at a fixed price. Corner connects consumers with vetted interior designers and enables everyone to build hyper-personalized kitchens and bathrooms. Its mission is to eliminate the middleman and make it easier for people to access high-end home renovation. | $450K | Pre-Seed | Jan 28, 2021 |  |

4 of 4 investments shown.

## Co-investors
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund, 1 deal together
- [EstBAN](https://shizune.co/investors/profile/estban) — VC Fund, 1 deal together
- [Further than Capital](https://shizune.co/investors/profile/further-than-capital) — VC Fund, 1 deal together
- [Icebreaker.vc](https://shizune.co/investors/profile/icebreaker-vc) — VC Fund, 1 deal together
- [Lemonade Stand](https://shizune.co/investors/profile/lemonade-stand-19b2) — VC Fund, 1 deal together
- [Little Green Fund](https://shizune.co/investors/profile/little-green-fund) — VC Fund, 1 deal together

## About Klaus

VC Fund · Tallinn, Estonia

Klaus is a conversation review tool that improves customer service quality by making internal feedback easy and systematic. It also integrates with your help desk, good for improving the quality of answers and onboarding new agents. They also connect to your favorite help desk solution and saves time on fumbling around with spreadsheets and comingup with the review system.The company's platform focuses on managing an efficient quality assurance process, coaching agents, and increasing customer retention. It also offers a technology that improves customer service quality by making internal feedback systematic, enabling companies to have less complicated customer interactions.Klaus is based on August 9, 2017 by Kair Käsperand Martin Kõiva in Tallinn, Estonia.

4 contacts available at Klaus.

| Name | Title | Profile |
| --- | --- | --- |
| Joonathan Mägi | CTO | https://shizune.co/investors/profile/joonathan-m%C3%A4gi |
| Martin Kõiva | Co-Founder and CEO | https://shizune.co/investors/profile/martin-k%C3%B5iva |
| Merily Leis | Head of Marketing | https://shizune.co/investors/profile/merily-leis |
| Valentina Thörner | Head of Product | https://shizune.co/investors/profile/valentina-th%C3%B6rner |

## Similar investors

### Similar industry
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [SOSV](https://shizune.co/investors/profile/sosv) — VC Fund
- [Breakthrough Energy Ventures](https://shizune.co/investors/profile/breakthrough-energy-ventures) — VC Fund

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund
- [Everywhere Ventures](https://shizune.co/investors/profile/everywhere-ventures) — VC Fund

### Similar country
- [Specialist VC](https://shizune.co/investors/profile/united-angels-vc) — VC Fund
- [Superangel](https://shizune.co/investors/profile/superangel) — VC Fund
- [Tera Ventures](https://shizune.co/investors/profile/tera-ventures) — VC Fund

## Featured in investor lists
- [Financial Services Angel Investors in Estonia](https://shizune.co/investors/financial-services-angel-investors-estonia)
- [FinTech Angel Investors in Estonia](https://shizune.co/investors/fintech-angel-investors-estonia)
- [Climate Angel Investors in Estonia](https://shizune.co/investors/climate-angel-investors-estonia)
- [Energy Angel Investors in Estonia](https://shizune.co/investors/energy-angel-investors-estonia)
- [Sustainability Investors in Estonia](https://shizune.co/investors/sustainability-investors-estonia)
- [Sustainability Angel Investors in Estonia](https://shizune.co/investors/sustainability-angel-investors-estonia)

## FAQ

### What does Martin Kõiva invest in?

Martin Kõiva invests primarily in Software, Audio and Video startups, most often at Pre-Seed and Seed stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Martin Kõiva's check size?

Martin Kõiva typically joins rounds of $450k–$1.3M at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Martin Kõiva participates in.

### When did Martin Kõiva last invest?

The most recent investment recorded for Martin Kõiva closed in Sep 2025. Shizune tracks 4 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co