# Blake Rosenthal-Herman

> Blake Rosenthal-Herman is a Series B investor at Mastercard backing Internet and Payments. See 3 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Mastercard](https://shizune.co/investors/profile/mastercard)
- Location: New York, United States
- Total investments: 3
- Last investment: Jul 2022
- Lead investor: 100%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/blake-rosenthal-herman-2279414/

Blake Rosenthal-Herman is a Series B investor at Mastercard in New York focused on Internet and Payments. Blake Rosenthal-Herman

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Internet | 1 | 33% |
| Payments | 1 | 33% |
| Transaction Processing | 1 | 33% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 1 | 33% |
| Funding Round | 1 | 33% |
| Non-equity Assistance | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Carbon Neutral Club | Carbon Neutral Club is a monthly membership that lets you save money for fighting climate change.1. Fight climate change in minutes by estimating and offsetting your carbon footprint.2. Save year-round when shopping at great sustainable brands that help you live a more sustainable life.Carbon Neutral Club's Employee Program allows forbusinesses to empower a carbon neutral workforce, all the while helping employees live more sustainably with year-round savings at great sustainable brands.www.carbonneutralclub.com |  |  | Jul 14, 2022 |  |
| Mammoth | Achieving climate goals starts with the workforce. Mammoth Climate helps organizations meet climate targets by empowering employee-led emissions reduction. Our platform rewards employees for improving their climate literacy and for making sweeping changes that reduce corporate emissions and save money. |  | Non-equity Assistance | Jul 14, 2022 |  |
| Mobeewave | Mobeewave sees the evolution of cashless payment from cards towards ubiquitous mobile money. By equipping a mobile phone with secure, contactless payment-acceptance capability, Mobeewave’s award-winning patented technology powers a True Wallet Experience for consumers, allowing them to put cash in to their mobile wallets as well as make payments.With Mobeewave, anyone can accept cashless payment for anything, anyhow, enabling in-person consumer-to-consumer transactions, between strangers as well as friends and family, in a secure, trusted and open environment. |  | Series B | Nov 14, 2018 |  |

3 of 3 investments shown.

## Co-investors
- [Forestay Capital](https://shizune.co/investors/profile/forestay-capital) — VC Fund, 1 deal together
- [NewAlpha Asset Management VC](https://shizune.co/investors/profile/newalpha-asset-management) — VC Fund, 1 deal together

## About Mastercard

VC Fund · Purchase, United States

Mastercard is a payments and technology company that connects consumers, businesses, merchants, and governments. They provide data services and marketing center. Their marketing materials help card portfolios and businesses. They also provide fraud prevention solutions and payment ecosystem security.

5 contacts available at Mastercard.

| Name | Title | Profile |
| --- | --- | --- |
| Jane Prokop | EVP, Small and Medium Enterprises | https://shizune.co/investors/profile/jane-prokop |
| Amy Jerusalmi | SVP North America Managed Services | https://shizune.co/investors/profile/amy-jerusalmi |
| Anand Menon | Vice President | https://shizune.co/investors/profile/anand-menon |
| Ben Fox Rubin | Vice President of Editorial Content | https://shizune.co/investors/profile/ben-fox-rubin |
| Blake Rosenthal-Herman | Executive Vice President | https://shizune.co/investors/profile/blake-rosenthal-herman |

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## FAQ

### What does Blake Rosenthal-Herman invest in?

Blake Rosenthal-Herman invests primarily in Internet, Payments and Transaction Processing startups, most often at Series B and Funding Round stage. Most of the 3 investments tracked by Shizune back companies in Canada. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Blake Rosenthal-Herman last invest?

The most recent investment recorded for Blake Rosenthal-Herman closed in Jul 2022. 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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