# Springtide Ventures

> Springtide Ventures is a VC fund backing Software and Cyber Security. See 24 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Prague, Czech Republic
- Total investments: 24
- Last investment: Jan 2025
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/springtide-ventures-s.r.o.
- X (Twitter): https://www.twitter.com/marekjablonsky
- Website: http://springtide.cz
- Facebook: https://www.facebook.com/springtideventures

Springtide Ventures is a venture capital company that helps to bring start-ups to life, materialize their visions, and global ambitions. It has a relentless drive for success, overcoming challenges and learning while, above all, preserving its integrity and sticking rigorously to ethical norms. Naturally, they value such qualities in entrepreneursand teams we support as they take on the challenges of building their next enterprise.The company was founded in 2013 and is based in Prague, Czech Republic.

## Contacts

5 contacts available for Springtide Ventures. Shizune tracks 2 team members at Springtide Ventures. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/springtide-ventures?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $417k–$4.5M |
| Series A | $1.4M–$15M |
| Series B | $3.3M–$27M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 7 | 29% |
| Cyber Security | 6 | 25% |
| Health Care | 4 | 17% |
| Information Technology | 4 | 17% |
| SaaS | 3 | 13% |

41 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 11 | 46% |
| Seed | 4 | 17% |
| Series B | 2 | 8% |
| Series C | 2 | 8% |
| Pre-Seed | 1 | 4% |

8 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Israel | 8 | 33% |
| United States | 5 | 21% |
| Czech Republic | 5 | 21% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Karel Tušek | CTO | 2 | https://shizune.co/investors/profile/karel-tusek |
| Nick Lazares | Venture Partner | 0 | https://shizune.co/investors/profile/nick-lazares |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| ThreatMark | ThreatMark is the future of trust in the digital world. The company was founded with a vision of bringing trust to interactions across all digital channels through profound cyber security know-how and latest advancements in AI & Data Analytics. ThreatMark processes a comprehensive set of data inputs to continuously validate user’s identity& their intentions while protecting the user’s most valuable assets.At ThreatMark, we make sure that the entire digital journey (onboarding, authentication, account management, transactions…) is trusted and safe for both end-users and businesses. Major banks use ThreatMark’s deep behavioral profiling engine to analyze vast numbers of user specific data & behavioral traits to precisely identify legitimate users and deny fraudsters in real-time. For banks and their users, ThreatMark enables seamless digital experience that does not require additional authentication nor rely on simple transaction monitoring. ThreatMark goes beyond the industry standards to validate more than 25 million users and over 1 billion logins and transactions yearly.ThreatMark is shifting the paradigm in the digital world with advanced solutions complemented by a dedicated team of fraud specialists & cybersecurity experts working in our Security Operations Center (SOC), who vigilantly watch for new malicious activities throughout the digital landscape. Among various honors and industry recognition, ThreatMark has been recognized by Gartner as a Representative Vendor for the Online Fraud Detection area in its 2020 Market guide, named Deloitte’s Top Technology Fast 50 for CE; won 2019 AI Award – Company of the Year; and was awarded EY Entrepreneur of The Year for 2019. | $8M | Convertible Note | Jan 07, 2025 |  |
| Equalum | Equalum develops and markets a platform for real-time data ingestion and processing focused on Big Data for enterprises. It is the first Data Beaming platform, capable of instantly teleporting operational data from any source to real-time analytics environments. Built for scalability and ease of use, Equalum harnesses the power of Spark in anenterprise-grade environment – helping organizations accelerate past traditional ETL or open-source implementations. Nir Livneh founded it in June 2015, with its headquarters in Tel Aviv in Israel. | $14M | Series C | Aug 08, 2022 |  |
| NetOp.Cloud | NetOp CLD develops an autonomous network operation SaaS that simplifies the operations of enterprise networking architecture. It automatically optimizes the network settings using machine learning without disrupting overall service and while reducing manpower and operating costs. | $4.5M | Seed | Apr 27, 2022 |  |
| Source Defense | In an industry focused on detection, Source Defense provides websites with the first ever prevention technology for attacks of third-party origin. We are the first ever SAAS platform that allows a site owner to set and enforce permissions, receive real-time alerts and monitor third-party vendors' behavior on their site. By removing thesecurity considerations from third-party integrations, we can save countless man-hours spent on tests and integrations, allowing sites to focus on generating revenues and new opportunities while keeping the site visitors safe and the site in high performance. | $27M | Series B | Apr 26, 2022 |  |
| OpenLoop Health | Servicing all 42,000 zip codes nationwide, OpenLoop accelerates the delivery of patient care by matching our trusted community of certified clinicians and insurance partners with innovators in the digital health space. | $8M | Series A | Mar 15, 2022 |  |
| PlainID | PlainID offers an advanced Authorization Platform, a policy-based access control solution that simplifies authorization to one point of decision, one point of control, and one point of view across cloud, mobile, and legacy applications. This intuitive policy-based decision solution is quickly replacing traditional role-based and attribute-basedauthorization solutions. Companies that use PlainID benefit from a scalable, graph database authorization platform that meets the demands of enterprise growth without worry.Founded in 2015, it is headquartered in Tel Aviv, Israel. | $75M | Series C | Dec 21, 2021 |  |
| Prolucent Health | Prolucent Health provides technology and services that empower modern workforce management. | $11.5M | Series A | Dec 13, 2021 |  |
| ShieldIOT | ShieldIOT delivers innovative cybersecurity solutions that protect edge devices from security threats and operational risks. Their application-agnostic software solution enables device manufacturers and network operators to automatically secure existing and new devices, across multiple industries, with no need for any development resources orsecurity expertise. | $7.4M | Series A | Nov 19, 2021 |  |
| ThreatMark | ThreatMark is the future of trust in the digital world. The company was founded with a vision of bringing trust to interactions across all digital channels through profound cyber security know-how and latest advancements in AI & Data Analytics. ThreatMark processes a comprehensive set of data inputs to continuously validate user’s identity& their intentions while protecting the user’s most valuable assets.At ThreatMark, we make sure that the entire digital journey (onboarding, authentication, account management, transactions…) is trusted and safe for both end-users and businesses. Major banks use ThreatMark’s deep behavioral profiling engine to analyze vast numbers of user specific data & behavioral traits to precisely identify legitimate users and deny fraudsters in real-time. For banks and their users, ThreatMark enables seamless digital experience that does not require additional authentication nor rely on simple transaction monitoring. ThreatMark goes beyond the industry standards to validate more than 25 million users and over 1 billion logins and transactions yearly.ThreatMark is shifting the paradigm in the digital world with advanced solutions complemented by a dedicated team of fraud specialists & cybersecurity experts working in our Security Operations Center (SOC), who vigilantly watch for new malicious activities throughout the digital landscape. Among various honors and industry recognition, ThreatMark has been recognized by Gartner as a Representative Vendor for the Online Fraud Detection area in its 2020 Market guide, named Deloitte’s Top Technology Fast 50 for CE; won 2019 AI Award – Company of the Year; and was awarded EY Entrepreneur of The Year for 2019. | $3M | Venture - Series Unknown | Oct 21, 2021 |  |
| Cyngular Security | Cyngular's ClouDFIR (Digital Forensics Incident Response) is a SaaS B2B Cloud Hunting, Investigation, and Response platform (CIRA by Gartner). |  | Pre-Seed | Oct 13, 2021 |  |

10 of 24 investments shown.

## Co-investors
- [SpringTide Ventures](https://shizune.co/investors/profile/springtide) — VC Fund, 4 deals together
- [Viola Ventures](https://shizune.co/investors/profile/violaventures) — VC Fund, 3 deals together
- [Health Velocity Capital](https://shizune.co/investors/profile/health-velocity-capital) — VC Fund, 2 deals together
- [iAngels](https://shizune.co/investors/profile/iangels) — VC Fund, 2 deals together
- [Jerusalem Venture Partners (JVP)](https://shizune.co/investors/profile/jerusalem-venture-partners) — VC Fund, 2 deals together
- [Able Partners](https://shizune.co/investors/profile/able-partners) — VC Fund, 1 deal together

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## FAQ

### What does Springtide Ventures invest in?

Springtide Ventures invests primarily in Software, Cyber Security and Health Care startups, most often at Series A and Seed stage. Most of the 24 investments tracked by Shizune back companies in Israel. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Springtide Ventures's check size?

Springtide Ventures typically joins rounds of $417k–$4.5M at Seed, $1.4M–$15M at Series A and $3.3M–$27M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Springtide Ventures participates in.

### How do I contact Springtide Ventures?

Public channels for Springtide Ventures include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at Springtide Ventures?

The team at Springtide Ventures includes Karel Tušek (CTO) and Nick Lazares (Venture Partner). The Team section lists each member with their title, investment count and links.

### 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.

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