# Satoshi Nakajima > Satoshi Nakajima is a Series A investor at mmhmm (Medina) backing Apps and Internet. See 4 investments, check sizes, portfolio. Updated Aug 2026. - Type: Angel Investor - Fund: [mmhmm](https://shizune.co/investors/profile/mmhmm) - Location: Medina, United States - Total investments: 4 - Last investment: Oct 2020 - Lead investor: 0% - Last updated: Aug 2026 - LinkedIn: http://www.linkedin.com/pub/satoshi-nakajima/0/900/388 Satoshi Nakajima is a Series A investor at mmhmm in Medina focused on Apps and Internet. Satoshi Nakajima - Investor and software engineer @ mmhmm ## Investment focus ### Industry | Industry | Investments | Share | | --- | --- | --- | | Apps | 1 | 25% | | Internet | 1 | 25% | | Security | 1 | 25% | | Software | 1 | 25% | | Video Chat | 1 | 25% | 8 industries tracked in total. ### Stage | Stage | Investments | Share | | --- | --- | --- | | Series A | 2 | 50% | | Funding Round | 1 | 25% | ### Country | Country | Investments | Share | | --- | --- | --- | | Japan | 2 | 50% | | United States | 1 | 25% | ## Investments | Company | Description | Amount | Stage | Date | Website | | --- | --- | --- | --- | --- | --- | | mmhmm | Mmhmm is a developer of a virtual camera application used to help make creative use of background during video conferencing calls. Its application integrates into the user's video calling applications and adds backdrops, allows users to team-up with their remote partners and give presentations together, and enables customers to make theirvirtual meetings more interesting and informative.The company was founded in 2020 and is headquartered in San Francisco, California. | $30.4M | Series A | Oct 07, 2020 | | | Spider Labs | Spider AF is an ad fraud detection tool that detects, blocks, and protects web advertisements from fraudulent clicks and conversions. Advertisers can easily detect fraudulent activity across published ads using centralized fraud management and advanced automation. Spider AF provides complete transparency in digital advertising, allowing advertisersto track ad placement, identify fraudulent behaviors, and analyze clean - fraud-free data.The company was founded in 2011 and is based in Tokyo, Japan. | $45.4M | Series A | Nov 21, 2019 | | | Spider Labs | Spider AF is an ad fraud detection tool that detects, blocks, and protects web advertisements from fraudulent clicks and conversions. Advertisers can easily detect fraudulent activity across published ads using centralized fraud management and advanced automation. Spider AF provides complete transparency in digital advertising, allowing advertisersto track ad placement, identify fraudulent behaviors, and analyze clean - fraud-free data.The company was founded in 2011 and is based in Tokyo, Japan. | $45.4M | Series A | Nov 21, 2019 | | | Wellness | Wellness is a provider of personal doctor service. | $5M | | Oct 23, 2019 | | 4 of 4 investments shown. ## Co-investors - [Accord Ventures](https://shizune.co/investors/profile/accord-ventures) — VC Fund, 2 deals together - [Mitsubishi UFJ Capital](https://shizune.co/investors/profile/mitsubishi-ufj-capital) — VC Fund, 2 deals together - [Nippon Venture Capital](https://shizune.co/investors/profile/nippon-venture-capital) — VC Fund, 2 deals together - [Aglaé Ventures](https://shizune.co/investors/profile/aglae-ventures) — VC Fund, 1 deal together - [All Turtles](https://shizune.co/investors/profile/allturtles) — VC Fund, 1 deal together - [Darwin Venture Management](https://shizune.co/investors/profile/darwin-venture-management) — VC Fund, 1 deal together ## About mmhmm VC Fund · San Francisco, United States Mmhmm is a developer of a virtual camera application used to help make creative use of background during video conferencing calls. Its application integrates into the user's video calling applications and adds backdrops, allows users to team-up with their remote partners and give presentations together, and enables customers to make theirvirtual meetings more interesting and informative.The company was founded in 2020 and is headquartered in San Francisco, California. 5 contacts available at mmhmm. | Name | Title | Profile | | --- | --- | --- | | Satoshi Nakajima | Investor and software engineer | https://shizune.co/investors/profile/satoshi-nakajima | | Alice Denis | Vice President, Head of Finance | https://shizune.co/investors/profile/alice-denis | | Andrew Owen | Director of Community | https://shizune.co/investors/profile/andrew-owen | | David Bean | Director of Engineering | https://shizune.co/investors/profile/david-bean-71ba | | Phil Libin | CEO | https://shizune.co/investors/profile/phil-libin | ## Similar investors ### Similar stage - [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund - [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund - [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund ## FAQ ### What does Satoshi Nakajima invest in? Satoshi Nakajima invests primarily in Apps, Internet and Security startups, most often at Series A and Funding Round stage. Most of the 4 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio. ### When did Satoshi Nakajima last invest? The most recent investment recorded for Satoshi Nakajima closed in Oct 2020. 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. 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