Longworth Venture Partners
VC Fund
Waltham, United States
Longworth Venture Partners is a venture capital firm that has led investments in some innovative and successful technology companies.Our fund size and investment strategy allow us to put the right amount of money to work at the right time -- whether an initial seed-stage investment (e.g., $250,000) or a larger growth round (e.g., $4 million).We have the resources to help you through the entire lifecycle of your company.When we invest in a company, we work closely with the executive team as board members and active advisors. To us, that means helping you succeed without getting in the way. It also means committing time and resources when you need support. From introductions to customer prospects, to recruiting team members, to help with strategy, we strive to have a meaningful impact on the success of your business.
- Total investments:
- 55
- Last investment:
- Lead investor:
- 33%
- Fund size:
- $122M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Longworth Venture Partners invests in
Stages Longworth Venture Partners invests in
Countries Longworth Venture Partners invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Series A
- $1.2M–$10M
- Series B
- $7.1M–$16M
Investment Focus
Industry
- Software 14 (25%)
- Enterprise Software 8 (15%)
- Mobile 6 (11%)
- Information Technology 6 (11%)
- Advertising 5 (9%)
Stage
- Series B 13 (24%)
- Series A 10 (18%)
- Funding Round 8 (15%)
- Seed 6 (11%)
- Series C 6 (11%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
David Nanto
corporate venturing
|
corporate venturing | Total investments: 0 | Find email | |
Paul Margolis
Founder
|
Founder | Total investments: 7 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Hospital IQ is the leading predictive analytics platform applying proven operations research to improve hospital operational efficiency and patient quality through smarter data-driven decision making. The company works with a number of leading institutions including Brigham and Women’s Hospital to systematically optimize capacity, schedules, andstaffing. Hospital IQ’s automated reporting, modeling, and prediction tools are used to improve utilization and throughput across a hospital or hospital network.Hospital IQ was founded by a veteran team of operations management and software engineers, in consultation with leading industry experts, driven by a mission to apply operations research principles to improve hospital efficiency. | $25M / Series C / Jun 28, 2021 | ||
| RapidMiner builds a software platform for data science teams that unites data prep, machine learning, and predictive model deployment. Organizations can build machine learning models and put them into production faster than ever before on a single platform. RapidMiner eliminates the complexities of cutting edge data science by making it easy todeploy the latest machine learning algorithms and innovative technologies like Tensorflow, Hadoop, and Spark. More than 300,000 data scientists in over 150 countries use RapidMiner products on-premise or in the cloud to drive revenue, reduce costs, and avoid risks.For more information, visit www.rapidminer.com. | $1.2M / Venture - Series Unknown / Oct 02, 2020 | ||
| NuoDB’s distributed SQL database for cloud applications helps customers get applications to market faster and reduce their total cost of ownership. Software vendors and e-commerce companies rely on NuoDB to obtain the combination of scale-out simplicity, elasticity, and continuous availability that cloud applications require, with the transactionalconsistency and durability that databases of record demand.As a result, customers can capitalize on modern technologies such as cloud computing and containerization to ensure their applications are ready for today’s evolving expectations, as well as any future requirements.NuoDB is headquartered in Cambridge, Massachusetts, USA, with offices in Dublin, London, and Sofia. | $30.6M / Dec 31, 2018 | ||
| Applause is a crowd-sourced digital quality testing enabling companies to deliver digital experiences to their customers. Software is at the heart of how all brands engage users, and digital experiences must work flawlessly everywhere. With 300,000+ testers available on-demand around the globe, Applause provides brands with a full suite of testingand feedback capabilities. This approach drastically improves testing coverage, eliminates the limitations of offshoring and traditional QA labs, and speeds time-to-market for websites, mobile apps, IoT, and in-store experiences.Thousands of leading companies — including Ford, Fox, Google, and Dow Jones — rely on Applause as a best practice to deliver high-quality digital experiences that customers love. It was founded in 2007 and is based in Framingham, Massachusetts, United States/ | $35M / Series F / Sep 14, 2016 | ||
| Rize is an 3D printing company manufacturing full-color multi-material office-friendly industrial 3D printers. It enables sustainable and inclusive innovation to achieve additive at scale. The company's 3D printers, the world’s first hybrid 3D printers, are a breakthrough combining two discrete technologies, material extrusion and materialjetting. This enables a one-touch experience to produce parts that mimic injection-molded parts and the capability to digitally connect to Industry 4.0 technologies, at the lowest total cost of ownership. | $4M / Seed / Jul 20, 2016 | ||
| NuoDB’s distributed SQL database for cloud applications helps customers get applications to market faster and reduce their total cost of ownership. Software vendors and e-commerce companies rely on NuoDB to obtain the combination of scale-out simplicity, elasticity, and continuous availability that cloud applications require, with the transactionalconsistency and durability that databases of record demand.As a result, customers can capitalize on modern technologies such as cloud computing and containerization to ensure their applications are ready for today’s evolving expectations, as well as any future requirements.NuoDB is headquartered in Cambridge, Massachusetts, USA, with offices in Dublin, London, and Sofia. | $17M / Series B / Feb 22, 2016 | ||
| RapidMiner builds a software platform for data science teams that unites data prep, machine learning, and predictive model deployment. Organizations can build machine learning models and put them into production faster than ever before on a single platform. RapidMiner eliminates the complexities of cutting edge data science by making it easy todeploy the latest machine learning algorithms and innovative technologies like Tensorflow, Hadoop, and Spark. More than 300,000 data scientists in over 150 countries use RapidMiner products on-premise or in the cloud to drive revenue, reduce costs, and avoid risks.For more information, visit www.rapidminer.com. | $16M / Series C / Jan 05, 2016 | ||
| Mobiquity provides mobile engagement solutions. It offers FanShots that engage fans and customers with interactive mobile photo booths; and Velocity, a mobile solution to boost employee learning and performance. It also provides consulting, data and analytics, enterprise mobile management, enterprise mobile readiness assessment, managed support,mobile development and testing, opportunity assessment, and tech refresh services, as well as behavioral analytics solutions. Its solutions can be accessed in Android, Windows Phone, Blackberry, IOs, and web platforms. It serves various clients including Reebok, Dell, Novartis, and others. Mobiquity serves the construction, education and publishing, financial service, healthcare, media, retail, technology, telecommunication, and travel and entertainment industries. William Seibel and Scott Snyder founded Mobilocity in 2011 that later became Mobiquity in Wellesley in Massachusetts. Mobiquity has additional office locations in Ahmedabad and Pune in India, London in the United Kingdom, Amsterdam and the Hague in the Netherlands, Atlanta in Georgia, Boston in Massachusetts, Dallas in Texas, Gainesville in Florida, New York City, Philadelphia in Pennsylvania, and San Francisco in California. It operates as a subsidiary of Hexaware Technologies as of June 14, 2019. | $5M / Venture - Series Unknown / Oct 14, 2015 | ||
| Olapic is a visual marketing platform that helps brands reach their consumers visually. With Olapic, users can collect, curate, create, and activate visual content, driving brand engagement to new heights. It is an enterprise, all-in-one user-generated, influencer, and short-form video content platform that provides content and scale users needwhile ensuring it’s optimized across all its marketing channels.It was established in 2010 and is headquartered in New York. | $15M / Series B / Jun 23, 2015 | ||
| Swirl is an in-store mobile marketing platform provider that is helping retailers leverage the power of mobile to attract and influence consumers while they shop in retail stores.The company's indoor location-based marketing platform allows retailers to deliver highly targeted messages, content and offers to consumer smartphones while theyshop in specific areas of the store. The platform combines patent-pending indoor location beacons with cloud-based marketing campaign management services and a software development kit that allows retailers to add an in-store mobile experience to any existing mobile app. | $18M / Series C / Apr 23, 2015 | ||
| See all 55 investments → | |||
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FAQ
What does Longworth Venture Partners invest in?
Longworth Venture Partners invests primarily in Software, Enterprise Software and Mobile startups, most often at Series B and Series A stage. Most of the 55 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 Longworth Venture Partners's check size?
Longworth Venture Partners typically joins rounds of $1.2M–$10M at Series A and $7.1M–$16M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Longworth Venture Partners participates in.
How do I contact Longworth Venture Partners?
Public channels for Longworth Venture Partners include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at Longworth Venture Partners?
The team at Longworth Venture Partners includes David Nanto (corporate venturing) and Paul Margolis (Founder). The Team section lists each member with their title, investment count and links.
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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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