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 invarious 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:
- 2378
- 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 207 (9%)
- Information Technology 108 (5%)
- Artificial Intelligence 101 (4%)
- FinTech 66 (3%)
- Financial Services 64 (3%)
Stage
- Series A 298 (13%)
- Series B 229 (10%)
- Seed 227 (10%)
- Series C 155 (7%)
- Series D 97 (4%)
Country
- United States 530 (22%)
- India 39 (2%)
- Israel 27 (1%)
- United Kingdom 24 (1%)
- Singapore 15 (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: 47 | Find email | |
Justin Overdorff
Partner
|
Partner | Total investments: 40 | Find email | |
Michael Mignano
Partner
|
Partner | Total investments: 45 | Find email | |
| See all 64 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Buildots specializes in transforming construction sites into a data-driven digital environment. Its platform enables maximum control of construction processes at minimal effort. The solution turns every site walk into valuable process data that can immediately be used for gaining full control of a certain project. | $130M / Series E / Sep 14, 2026 | ||
| Temporal Technologies is a computer software company that enables its users to build and operate resilient applications using developer-friendly primitives. It specializes in the fields of information technology, software development, and computer software. It was founded in 2019 and headquartered in Bellevue, Washington. | $550M / Series E / Sep 14, 2026 | ||
| Harvey is an artificial intelligence technology service provider. | $550M / Series H / Sep 09, 2026 | ||
| Lightfield is a software company that develops an AI-native customer relationship management platform. Its CRM captures customer interactions from emails, meetings, calls, Slack, and other systems and organizes them into a contextual model of customer relationships, accounts, opportunities, and contacts. The platform uses AI agents to perform taskssuch as account research, meeting preparation, opportunity qualification, follow-ups, pipeline generation, and customer outreach. Its data model maintains the current state of CRM records as well as the history of changes and interactions over time. Lightfield also provides tools for building agents, automations, and workflows using natural-language prompts, APIs, MCP, and a command-line interface. The platform supports data migration from existing CRM systems and can operate alongside systems such as Salesforce and HubSpot through two-way synchronization. | $47M / Series A / Sep 09, 2026 | ||
| Covenant is a global defense technology company that builds long-range precision strike weapons for the United States and its allies. The company's flagship weapon system, Anthem, combines a heavy payload and long range at a fraction of the cost of comparable legacy systems. | $250M / Series A / Sep 09, 2026 | ||
| Mistral AI develops artificial intelligence models, applications, and infrastructure for organizations and developers. | $3.5B / Series D / Sep 08, 2026 | ||
| Cylake develops a cybersecurity platform designed to analyze and protect enterprise infrastructure using an integrated data architecture. The platform combines hardware and software components that collect and process operational and security data from networks, endpoints, cloud workloads, and other technology systems. Its system uses artificialintelligence models and automated workflows to analyze activity, identify abnormal behavior, and generate alerts for investigation and response. Cylake’s platform is designed to operate within on-premises or private cloud environments so organizations can process and store security data within their own infrastructure. The technology consolidates multiple security functions into a unified system that provides visibility across an organization’s technology stack and supports monitoring, analysis, and incident response activities. | $245M / Convertible Note / Sep 08, 2026 | ||
| Latitude is working on a global payments system that links stablecoin-based settlement with local currency payout systems. | $35M / Series A / Sep 08, 2026 | ||
| Castelion is a defense tech company that develops and manufactures modern weapons systems for the U.S. military. | $800M / Series C / Aug 19, 2026 | ||
| Castelion is a venture-backed defense tech company applying modern hardware development and manufacturing processes to critical national security challenges, specifically to solve affordability, scale, and supply chain robustness. The company combines vertical integration, rapid iteration, and high-cadence testing to build hardware that isengineered from the ground up for scalable production.Castelion’s core offerings include solid-rocket motors, missile avionics, flight-control systems, seekers, and full strike-weapon assemblies, all designed for compatibility with existing military launch platforms. | $800M / Series C / Aug 19, 2026 | ||
| See all 2378 investments → | |||
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FAQ
What does Lightspeed Venture Partners invest in?
Lightspeed Venture Partners invests primarily in Software, Information Technology and Artificial Intelligence startups, most often at Series A and Series B stage. Most of the 2,378 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 Lightspeed Venture Partners's check size?
Lightspeed Venture Partners typically joins rounds of $2M–$26M at Seed, $7M–$85M at Series A and $15M–$125M 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 Lightspeed Venture Partners participates 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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