Lightspeed Venture Partners
VC Fund
Menlo Park, United States
Lightspeed Venture Partners is a venture capital firm that engages in consumer, enterprise, technology, and cleantech markets. It focuses on seed, early-stage, later-stage, expansion-stage, start-ups, growth companies, and incubation, and specializes in debt financing for start-ups and growth companies. Lightspeed Venture Partners invests in various sectors that include enterprise, consumer, big data, bitcoin, enterprise technology, cleantech, mobile, internet, financial technology, cloud solutions, e-commerce, storage, media, networking, energy, and software, software-as-a-service, information technology, biotechnology, and social.
- Total investments:
- 2448
- Last investment:
- Lead investor:
- 40%
- Fund size:
- $600M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Lightspeed Venture Partners invests in
Stages Lightspeed Venture Partners invests in
Countries Lightspeed Venture Partners invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 64 contacts → | |||
Round size
- Seed
- $2M–$26M
- Series A
- $7M–$85M
- Series B
- $15M–$125M
Investment Focus
Industry
- Software 271 (11%)
- Artificial Intelligence 185 (8%)
- Information Technology 151 (6%)
- FinTech 93 (4%)
- Financial Services 86 (4%)
Stage
- Series A 387 (16%)
- Seed 335 (14%)
- Series B 292 (12%)
- Series C 197 (8%)
- Series D 122 (5%)
Country
- United States 670 (27%)
- India 51 (2%)
- Israel 28 (1%)
- China 27 (1%)
- United Kingdom 25 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Arsham Memarzadeh
Partner
|
Partner | Total investments: 20 | Find email | |
Galym Imanbayev
Partner
|
Partner | Total investments: 17 | Find email | |
James Ephrati
Partner
|
Partner | Total investments: 48 | Find email | |
Justin Overdorff
Partner
|
Partner | Total investments: 41 | Find email | |
Michael Mignano
Partner
|
Partner | Total investments: 45 | Find email | |
| See all 64 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Zaria provides loan servicing and collateral management infrastructure for banks, private credit firms, fintech lenders, and digital asset lenders. Its platform supports primary servicing and auditable collateral management for structured finance and digital asset-backed lending. The company combines these functions within a single platform for institutional lending operations. | $5.2M / Seed / Oct 14, 2026 | ||
| Zenzap is a software company that develops an AI-powered workplace communication and collaboration platform for businesses. Its application combines team messaging, task management, file sharing, voice and video calls, and calendar integration in a centralized workspace. The platform organizes conversations by teams, projects, and departments, helping employees coordinate activities and track responsibilities within their existing workflows. Zenzap also incorporates AI agents and search capabilities that help users retrieve information from conversations, documents, and connected business applications. Its administrative features support employee onboarding, access permissions, data management, and the removal of access when employees leave an organization. The platform includes integrations with human resources information systems and other workplace tools to synchronize employee records and support business processes. Additional features, such as scheduled messages and configurable working hours, help teams manage notifications and maintain boundaries between work and personal time. Zenzap serves businesses across industries, including healthcare, hospitality, construction, logistics, and professional services, seeking to centralize workplace communication and improve team coordination. | $33M / Series A / Oct 14, 2026 | ||
| Ramp is a financial technology company that develops software for corporate spend management, finance operations, and business payments. The company provides an integrated platform that combines corporate cards, expense management, accounts payable automation, procurement, travel booking, reimbursements, treasury services, and accountingautomation. Its software is designed to help organizations manage business spending, streamline financial workflows, and centralize finance operations within a single system. The platform enables businesses to issue and manage corporate cards, process vendor payments, track expenses, handle employee reimbursements, and automate accounting processes. It also incorporates artificial intelligence capabilities that assist with receipt matching, transaction categorization, policy enforcement, approval workflows, and financial reporting. These features are intended to reduce manual administrative work and improve visibility into organizational spending. | $1.9B / Series G / Oct 09, 2026 | ||
| LM Arena provides a platform for testing AI models. LM Arena serves as an essential resource for researchers and developers worldwide. As the AI field expands, the importance of reliable benchmarking tools like LM Arena remains undeniable. The company also operates Chatbot Arena, a specialized service for evaluating artificial intelligence systems. | $200M / Series B / Oct 08, 2026 | ||
| Founded by designers of such award-winning indie titles as Journey, What Remains of Edith Finch, Dustforce, Blaseball, and more, Gardens Interactive is a game studio focused on the future of online play, growing lush, living spaces that need to be cared for by their communities, and fostering meaningful, memorable stories between players around theworld. | $35M / Series B / Oct 07, 2026 | ||
| RobCo is a company that develops modular industrial robotics systems combined with AI-driven software to automate manual and repetitive tasks in manufacturing environments. It provides a platform that includes configurable robotic hardware, no-code programming tools, AI-powered vision systems, and digital simulation to plan, test, and deployautomation workflows across applications like machine loading, palletizing, and materials handling. The company’s solutions are designed to be flexible and scalable so manufacturers can adapt robot configurations as production requirements evolve. RobCo also offers tools for remote management, predictive maintenance, and integration with existing equipment to support continuous operation. Its products aim to simplify the adoption of robotics by reducing the need for specialized programming and enabling simulation-based validation before physical deployment. | Secondary Market / Oct 05, 2026 | ||
| Avarra is an enterprise avatar and AI simulation firm. The first application provides realistic 3D AI avatars trained on web-meeting transcripts and best practice playbooks to correctly imitate client sales conversations. | $17M / Series A / Oct 04, 2026 | ||
| Research Lab. Exploring new frontiers of voice generation. We are researching and deploying novel methods in voice AI to make content enjoyable in any language and voice to benefit new audiences and viewers. Our mission is to make content universally accessible in any language & voice. | $300M / Secondary Market / Sep 30, 2026 | ||
| Enveda Biosciences is a biotechnology company building new medicines from plants. It harnesses the complexity of the natural world to tackle today’s biggest healthcare challenges. With the help of the advancements in knowledge graphs, machine learning, and metabolomics, they discover the next generation of small molecules. Its technologiessystematize the discovery of small molecules and novel targets for complex diseases. By probing novel chemical space and mechanisms of action, they are breaking the status quo for challenging diseases with a need for effective treatments, such as fibrosis or neurodegeneration.Enveda, launched in 2019, is based in San Francisco, California. | $311M / Series E / Sep 23, 2026 | ||
| Snorkel AI is a technology startup that empowers data scientists and developers to turn data into accurate and adaptable AI applications fast with Snorkel Flow, a first-of-its-kind data-centric development platform, powered by programmatic labeling. Snorkel Flow reduces the time, cost, and friction of labeling training data so data science anddevelopment teams can more easily build and scale AI models to deploy more meaningful applications. Incorporating human judgment into the AI process through subject-matter experts is made more efficient and scalable leading to more ethical, responsible outcomes.Two out of the top three US banks, several government agencies and Fortune 500 companies use Snorkel Flow. Snorkel’s core research was developed at Stanford AI lab and is deployed at Google, Intel, Apple, IBM, DARPA, and other trailblazing organizations. | $350M / Series E / Sep 22, 2026 | ||
| See all 2448 investments → | |||
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FAQ
What does Lightspeed Venture Partners invest in?
Lightspeed Venture Partners invests primarily in Software, Artificial Intelligence and Information Technology startups, most often at Series A and Seed stage. Most of the 2,448 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Lightspeed Venture Partners invest in?
Lightspeed Venture Partners typically joins rounds of $2M–$26M at Seed, $7M–$85M at Series A and $15M–$125M at Series B. These are whole funding-round sizes, not Lightspeed Venture Partners's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Lightspeed Venture Partners took part in.
How do I contact Lightspeed Venture Partners?
Public channels for Lightspeed 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 Lightspeed Venture Partners?
The team at Lightspeed Venture Partners includes Arsham Memarzadeh (Partner), Galym Imanbayev (Partner) and James Ephrati (Partner), among 64 team members tracked by Shizune. 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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