Companies funded by Greylock
Early-stage venture firm with a strong enterprise and AI footprint.
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Ranked by current headcount across companies in Greylock's disclosed portfolio. Refreshed daily.
- 1Meta· Menlo Park, California, United States
Meta's mission is to build the future of human connection and the technology that makes it possible. Our technologies help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Apps like Messenger, Instagram and WhatsApp further empowered billions around the world. Now, Meta is moving beyond 2D screens toward immersive and intelligent experiences like virtual reality, wearables and AI to help build the next evolution in social technology.To help create a safe and respectful online space, we encourage constructive conversations on this page. Please note the following:• Start with an open mind. Whether you agree or disagree, engage with empathy.• Comments violating our Community Standards will be removed or hidden. Please treat everybody with respect.• Keep it constructive. Use your interactions here to learn about and grow your understanding of others.• Our moderators are here to uphold these guidelines for the benefit of everyone, every day.• If you are seeking support for issues related to your Facebook account, please reference our Help Center (https://www.facebook.com/help) or Help Community (https://www.facebook.com/help/community).For a full listing of our jobs, visit https://www.metacareers.com
- Post-IPO debt
- 163.9k employees
- Founded 2004
- 2Airbnb· San Francisco, California, United States
Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays, experiences and services that make it possible for guests to connect with communities in a more authentic way.
- Post-IPO debt
- 72.2k employees
- Founded 2007
- 3Instagram
More than one billion people around the world use Instagram, and we’re proud to be bringing them closer to the people and things they love. Instagram inspires people to see the world differently, discover new interests, and express themselves.Since launching in 2010, our community has grown at a rapid pace. Our teams are growing fast, too, and we’re looking for talent across engineering, product management, design, research, analytics, technical program management, operations, and more. In addition to our headquarters in Menlo Park, we have thriving offices in New York City and San Francisco where teams are doing impactful work every day.
- Series B
- 58k employees
- Founded 2010
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- 4ServiceNow· Santa Clara, California, United States
ServiceNow (NYSE: NOW) makes the world work better for everyone. Our cloud-based platform and solutions help digitize and unify organizations so that they can find smarter, faster, better ways to make work flow. So employees and customers can be more connected, more innovative, and more agile. And we can all create the future we imagine. The world works with ServiceNow. For more information, visit www.servicenow.com.
- Post-IPO debt
- 35.3k employees
- Founded 2004
- 5Staples· Framingham, Massachusetts, United States
For nearly 40 years, Staples has been a trusted leader in delivering end-to-end workplace solutions for consumers and businesses of all sizes across a broad range of industries. The company provides a comprehensive portfolio of products, strategic solutions, and services including print and marketing, shipping, technology, and travel. Its specialized assortment includes high-quality office supplies, janitorial products, technology, furniture, and breakroom essentials, all supported by best-in-class supply chain capabilities and a dedicated team of experts committed to making the workday easier. Headquartered near Boston, Massachusetts, Staples operates throughout North America via direct B2B sales, e-commerce, and more than 900 retail stores. To learn more, visit your local U.S. Staples store, download the Staples app, explore Staples.com or StaplesBusiness.com, or follow @Staples on social media.
- Grant
- 29.6k employees
- Founded 1986
Find engineers and founders in Greylock’s portfolio
Greylock’s portfolio is a curated bet on the next wave of category-defining companies. The list above ranks Greylock-backed companies by current headcount, drawn from public LinkedIn and Crunchbase records. With 348 matching companies in Refolk’s index, the depth of senior engineers, founders, and operators is significant.
Greylock’s companies tend to share a profile - strong technical founders, fresh capital, and access to the Greylock network. Hiring from these companies often means hiring from one of the most curated talent pools in tech.
Refolk turns this list into a search. Ask for “Greylock portfolio companies hiring senior ML engineers” or “founders of Greylock-backed companies who left in the last year” and Refolk returns a fresh ranked shortlist.
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Last refreshed: Wed, 05 Aug 2026 12:57:32 GMT
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Browse other investors
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Common questions
How is this ranking built?
The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.
How fresh is the data?
The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 12:57:32 GMT.
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- Staff backend engineers in NYC who shipped Rust in production
- Series A fintechs in SF under 50 people, growing headcount this year
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