# David Sze

> David Sze is a Series B investor at Greylock (San Francisco) backing Software and Internet. See 32 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Greylock](https://shizune.co/investors/profile/greylock)
- Location: San Francisco, United States
- Total investments: 32
- Last investment: Jul 2024
- Lead investor: 41%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/in/davidsze
- X (Twitter): http://twitter.com/davidsze
- Website: https://x.com/davidsze
- Facebook: http://www.facebook.com/davidsze

David Sze is a Series B investor at Greylock in San Francisco focused on Software and Internet. David Sze is based out of San Francisco, California and is the Advisory Partner of Greylock.David previously worked at Excite as a SVP of Product Strategy. David Sze attended the Yale University.

## Round sizes

| Stage | Round size |
| --- | --- |
| Series A | $2.8M–$75M |
| Series B | $7.2M–$30M |
| Series C | $6.4M–$29M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 6 | 19% |
| Internet | 4 | 13% |
| Social Media | 4 | 13% |
| Video Streaming | 3 | 9% |
| Apps | 2 | 6% |

56 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 11 | 34% |
| Series A | 8 | 25% |
| Series C | 3 | 9% |
| Funding Round | 3 | 9% |
| Seed | 2 | 6% |

9 stages tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Lumi Story | Lumi Story operates as an artificial intelligence company that helps people clear there barriers. | $4M | Seed | Jul 25, 2024 |  |
| Nextdoor | Nextdoor is the app where you plug into the neighborhoods that matter to you. Our purpose is to cultivate a kinder world where everyone has a neighborhood they can rely on. Neighbors turn to Nextdoor daily to receive trusted information, give and get help, and build real-world connections with those nearby — neighbors, local businesses, and publicagencies.We believe connecting with others is a universal human need. That truth, and the reality that neighborhoods are among the most important communities in our lives, have been guiding principles for Nextdoor since the beginning.Today, neighbors rely on Nextdoor in 276,000 neighborhoods around the world, including the United States (nearly 1 in 3 U.S. households), the United Kingdom, Germany, France, the Netherlands, Italy, Spain, Sweden, Denmark, Australia, and Canada, with many more to come. Nextdoor is a privately held company based in San Francisco with backing from prominent investors including Benchmark, Shasta Ventures, Greylock Partners, Kleiner Perkins, Riverwood Capital, Bond, Axel Springer, Comcast Ventures, and others. | $18.6M | Post-IPO Equity | Jan 17, 2023 |  |
| Roblox | Roblox is a platform for online gaming and entertainment that provides a communal digital experience that unites individuals via play. It enables anyone to imagine, create, and have fun with friends as they explore interactive 3D experiences produced by developers using their desktop design tool, Roblox Studio. | $150M | Series F | Jul 16, 2018 |  |
| Caavo | Caavo is an entertainment obsessed hardware and software company. Our mission is to bring the art of TV viewing up to the level of today’s sophisticated audiences by uniting all of their entertainment into a single, elegant, voice controlled experience. Our products allow audiences to seamlessly move between linear TV, streaming services and webcontent, using voice or a single remote – to control it all. | $17.5M | Series B | Dec 19, 2017 |  |
| Caavo | Caavo is an entertainment obsessed hardware and software company. Our mission is to bring the art of TV viewing up to the level of today’s sophisticated audiences by uniting all of their entertainment into a single, elegant, voice controlled experience. Our products allow audiences to seamlessly move between linear TV, streaming services and webcontent, using voice or a single remote – to control it all. | $15M | Series A | Feb 14, 2017 |  |
| Vessel | Vessel is building a next generation video platform. Founded by Jason Kilar (Founding CEO of Hulu and former Senior Vice President at Amazon) and Richard Tom (Former CTO of Hulu) we are backed by Benchmark, Greylock Partners, and Bezos Expeditions (the personal investment company of Jeff Bezos.) | $57.5M | Series B | Apr 17, 2015 |  |
| Vessel | Vessel is building a next generation video platform. Founded by Jason Kilar (Founding CEO of Hulu and former Senior Vice President at Amazon) and Richard Tom (Former CTO of Hulu) we are backed by Benchmark, Greylock Partners, and Bezos Expeditions (the personal investment company of Jeff Bezos.) | $75M | Series A | Jun 24, 2014 |  |
| If You Can | If You Can is a computer software company that develops games that helps children to develop their social and emotional intelligence. It features social and emotional learning skills which includes managing emotions, such as frustration, disappointment, and showing empathy for others.The company was founded in 2012 and headquartered in San Mateo,California. | $6.5M | Series A | Feb 26, 2014 |  |
| Nextdoor | Nextdoor is the app where you plug into the neighborhoods that matter to you. Our purpose is to cultivate a kinder world where everyone has a neighborhood they can rely on. Neighbors turn to Nextdoor daily to receive trusted information, give and get help, and build real-world connections with those nearby — neighbors, local businesses, and publicagencies.We believe connecting with others is a universal human need. That truth, and the reality that neighborhoods are among the most important communities in our lives, have been guiding principles for Nextdoor since the beginning.Today, neighbors rely on Nextdoor in 276,000 neighborhoods around the world, including the United States (nearly 1 in 3 U.S. households), the United Kingdom, Germany, France, the Netherlands, Italy, Spain, Sweden, Denmark, Australia, and Canada, with many more to come. Nextdoor is a privately held company based in San Francisco with backing from prominent investors including Benchmark, Shasta Ventures, Greylock Partners, Kleiner Perkins, Riverwood Capital, Bond, Axel Springer, Comcast Ventures, and others. | $60M |  | Oct 29, 2013 |  |
| Nextdoor | Nextdoor is the app where you plug into the neighborhoods that matter to you. Our purpose is to cultivate a kinder world where everyone has a neighborhood they can rely on. Neighbors turn to Nextdoor daily to receive trusted information, give and get help, and build real-world connections with those nearby — neighbors, local businesses, and publicagencies.We believe connecting with others is a universal human need. That truth, and the reality that neighborhoods are among the most important communities in our lives, have been guiding principles for Nextdoor since the beginning.Today, neighbors rely on Nextdoor in 276,000 neighborhoods around the world, including the United States (nearly 1 in 3 U.S. households), the United Kingdom, Germany, France, the Netherlands, Italy, Spain, Sweden, Denmark, Australia, and Canada, with many more to come. Nextdoor is a privately held company based in San Francisco with backing from prominent investors including Benchmark, Shasta Ventures, Greylock Partners, Kleiner Perkins, Riverwood Capital, Bond, Axel Springer, Comcast Ventures, and others. | $7.2M | Series B | Feb 12, 2013 |  |

10 of 32 investments shown.

## Co-investors
- [Benchmark](https://shizune.co/investors/profile/benchmark) — VC Fund, 8 deals together
- [Ignition Partners](https://shizune.co/investors/profile/ignition-partners) — VC Fund, 4 deals together
- [Redpoint](https://shizune.co/investors/profile/redpoint-ventures) — VC Fund, 4 deals together
- [Bezos Expeditions](https://shizune.co/investors/profile/bezos-expeditions) — VC Fund, 3 deals together
- [DAG Ventures](https://shizune.co/investors/profile/dag-ventures) — VC Fund, 3 deals together
- [Hearst Ventures](https://shizune.co/investors/profile/hearst-interactive-media) — VC Fund, 3 deals together

## About Greylock

VC Fund · Menlo Park, United States

Greylock Partners invests in entrepreneurs that focus on consumer and enterprise software companies. The firm invests in companies that define new markets, including Airbnb, AppDynamics, Apptio, Arista Networks (NYSE: ANET), Cloudera, Docker, Dropbox, Facebook (Nasdaq: FB), LinkedIn (NYSE: LNKD), Medium, Nextdoor, Palo Alto Networks (NYSE: PANW),Pandora (NYSE: P), Pure Storage, and Workday (NYSE: WDAY).It was founded in 1965 and headquartered in Menlo Park, California.

5 contacts available at Greylock.

| Name | Title | Profile |
| --- | --- | --- |
| Bill Kaiser | Partner | https://shizune.co/investors/profile/bill-kaiser |
| David Wadhwani | Venture Partner | https://shizune.co/investors/profile/david-wadhwani |
| Howard Cox | Special Limited Partner | https://shizune.co/investors/profile/howard-cox |
| Jason Risch | Investor | https://shizune.co/investors/profile/jason-risch |
| Mike Duboe | General Partner | https://shizune.co/investors/profile/mike-duboe |

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## FAQ

### What does David Sze invest in?

David Sze invests primarily in Software, Internet and Social Media startups, most often at Series B and Series A stage. Most of the 32 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 David Sze's check size?

David Sze typically joins rounds of $2.8M–$75M at Series A, $7.2M–$30M at Series B and $6.4M–$29M at Series C. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds David Sze participates in.

### When did David Sze last invest?

The most recent investment recorded for David Sze closed in Jul 2024. Shizune tracks 32 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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