Union Square Ventures

Union Square Ventures is a New York-based venture capital firm founded in 2003, specializing in early-stage and growth financing across various sectors, including financial services, healthcare, and technology. The firm exclusively invests in the internet ecosystem, focusing on web applications, internet services, and mobile technologies that leverage large user networks and network effects. Union Square Ventures typically makes initial investments ranging from $1 million to $3 million, with a maximum investment of up to $20 million in any single company. The firm prefers to act as a lead investor, targeting ownership levels of 15% to 20%, and actively engages with the entrepreneurs it funds. Its investment strategy includes seeking out companies that utilize innovative information technology to drive high growth in diverse fields such as media, marketing, fintech, climate tech, and blockchain. Union Square Ventures primarily invests in companies located in major urban centers, including New York, San Francisco, London, and Berlin.

Brad Burnham

Partner

John Buttrick

Partner

Grace Carney

Analyst

Nick Grossman

Partner

Matt Mandel

Analyst

Hannah Murdoch

Analyst

Nikhil Raman

Analyst

Andy Weissman

Managing Partner

Fred Wilson

Partner

Past deals in Spam Filtering

Sift

Series E in 2021
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

Sift

Series D in 2018
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

Sift

Series C in 2016
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

Return Path

Private Equity Round in 2014
Return Path, founded in 1999 and headquartered in New York, specializes in email marketing optimization. The company provides a platform that offers data and insights to help clients enhance their email campaigns and improve deliverability. By partnering with leading email service providers, Return Path enables marketers to understand and address issues affecting email performance, ultimately driving better engagement and increased revenue. The company operates multiple offices globally, including locations in Denver, Sunnyvale, Austin, Indianapolis, Toronto, London, Paris, Hamburg, Sydney, and Sao Paulo. In addition to its primary focus on email marketing, Return Path also offers email fraud protection services to help organizations safeguard their brands.

Sift

Series B in 2014
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

Sift

Series A in 2013
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

Return Path

Series E in 2009
Return Path, founded in 1999 and headquartered in New York, specializes in email marketing optimization. The company provides a platform that offers data and insights to help clients enhance their email campaigns and improve deliverability. By partnering with leading email service providers, Return Path enables marketers to understand and address issues affecting email performance, ultimately driving better engagement and increased revenue. The company operates multiple offices globally, including locations in Denver, Sunnyvale, Austin, Indianapolis, Toronto, London, Paris, Hamburg, Sydney, and Sao Paulo. In addition to its primary focus on email marketing, Return Path also offers email fraud protection services to help organizations safeguard their brands.

Return Path

Series E in 2008
Return Path, founded in 1999 and headquartered in New York, specializes in email marketing optimization. The company provides a platform that offers data and insights to help clients enhance their email campaigns and improve deliverability. By partnering with leading email service providers, Return Path enables marketers to understand and address issues affecting email performance, ultimately driving better engagement and increased revenue. The company operates multiple offices globally, including locations in Denver, Sunnyvale, Austin, Indianapolis, Toronto, London, Paris, Hamburg, Sydney, and Sao Paulo. In addition to its primary focus on email marketing, Return Path also offers email fraud protection services to help organizations safeguard their brands.
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