# Sigal Mandelker

> Sigal Mandelker is a Series B investor at Ribbit Capital (New York) backing Web3 and FinTech. See 3 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Ribbit Capital](https://shizune.co/investors/profile/ribbit-capital)
- Location: New York, United States
- Total investments: 3
- Last investment: Mar 2021
- Lead investor: 33%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/sigal-mandelker-20a7a9b/

Sigal Mandelker is a General Partner at Ribbit Capital.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Web3 | 1 | 33% |
| FinTech | 1 | 33% |
| Software | 1 | 33% |
| Analytics | 1 | 33% |
| Blockchain | 1 | 33% |

7 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 1 | 33% |
| Series C | 1 | 33% |
| Series D | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Chainalysis | Chainalysis designs and develops anti-money laundering software for Bitcoin businesses. Its products include REACTOR, an interactive investigation tool that identifies offenders, visualizes data, and shares results with people and organizations, and API, a transaction-based risk scoring solution that contains the source and destination of funds tomeasure risk.Chainalysis also offers activity monitoring reports and diligence tools, which allow analysts to estimate criminal revenues and emerging threats. It offers activity monitoring reports, due diligence tools, and cyber threats from the deep web for financial institutions, real-time application programming interface (API), web-based investigation software for due diligence, and verification of customers for bitcoin business, and web-based investigation tools to identify cyber-criminals, identification of bitcoin extortion payments made by victims to criminals, and attribution for cyber threat intelligence industries. | $100M | Series D | Mar 26, 2021 |  |
| Chainalysis | Chainalysis designs and develops anti-money laundering software for Bitcoin businesses. Its products include REACTOR, an interactive investigation tool that identifies offenders, visualizes data, and shares results with people and organizations, and API, a transaction-based risk scoring solution that contains the source and destination of funds tomeasure risk.Chainalysis also offers activity monitoring reports and diligence tools, which allow analysts to estimate criminal revenues and emerging threats. It offers activity monitoring reports, due diligence tools, and cyber threats from the deep web for financial institutions, real-time application programming interface (API), web-based investigation software for due diligence, and verification of customers for bitcoin business, and web-based investigation tools to identify cyber-criminals, identification of bitcoin extortion payments made by victims to criminals, and attribution for cyber threat intelligence industries. | $100M | Series C | Nov 23, 2020 |  |
| Chainalysis | Chainalysis designs and develops anti-money laundering software for Bitcoin businesses. Its products include REACTOR, an interactive investigation tool that identifies offenders, visualizes data, and shares results with people and organizations, and API, a transaction-based risk scoring solution that contains the source and destination of funds tomeasure risk.Chainalysis also offers activity monitoring reports and diligence tools, which allow analysts to estimate criminal revenues and emerging threats. It offers activity monitoring reports, due diligence tools, and cyber threats from the deep web for financial institutions, real-time application programming interface (API), web-based investigation software for due diligence, and verification of customers for bitcoin business, and web-based investigation tools to identify cyber-criminals, identification of bitcoin extortion payments made by victims to criminals, and attribution for cyber threat intelligence industries. | $13M | Series B | Jul 07, 2020 |  |

3 of 3 investments shown.

## Co-investors
- [9Yards Capital](https://shizune.co/investors/profile/9yards-capital) — VC Fund, 2 deals together
- [Addition](https://shizune.co/investors/profile/addition-7af4) — VC Fund, 2 deals together
- [Accel](https://shizune.co/investors/profile/accel) — VC Fund, 1 deal together
- [Benchmark](https://shizune.co/investors/profile/benchmark) — VC Fund, 1 deal together
- [Buck Stash](https://shizune.co/investors/profile/buck-stash) — VC Fund, 1 deal together
- [Nyca Partners](https://shizune.co/investors/profile/nycapartners) — VC Fund, 1 deal together

## About Ribbit Capital

VC Fund · Palo Alto, United States

Ribbit Capital is a venture capital firm that focuses on companies operating in the financial services and financial technology sectors. The firm invests in businesses that are building infrastructure, platforms, or tools that aim to transform how financial services are delivered, accessed, or experienced. Ribbit Capital engages with startupsacross areas such as lending, payments, insurance, banking, and digital assets.

5 contacts available at Ribbit Capital.

| Name | Title | Profile |
| --- | --- | --- |
| Meyer Malka | Founder | https://shizune.co/investors/profile/meyer-malka |
| Nikolay Kostov | Partner | https://shizune.co/investors/profile/nikolay-kostov-2 |
| Ray Chua | Partner | https://shizune.co/investors/profile/ray-chua |
| Sigal Mandelker | General Partner | https://shizune.co/investors/profile/sigal-mandelker |
| Tessa Savakus | Analyst | https://shizune.co/investors/profile/tessa-savakus |

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- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund
- [FJ Labs](https://shizune.co/investors/profile/fj-labs) — VC Fund

## FAQ

### What does Sigal Mandelker invest in?

Sigal Mandelker invests primarily in Web3, FinTech and Software startups, most often at Series B and Series C stage. Most of the 3 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Sigal Mandelker last invest?

The most recent investment recorded for Sigal Mandelker closed in Mar 2021. Shizune tracks 3 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.

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