# Mayfield Fund

> Mayfield Fund is a VC fund in Menlo Park backing Software and Internet. See 545 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Menlo Park, United States
- Total investments: 545
- Last investment: Aug 2026
- Lead investor: 31%
- Fund size: $250M
- Last fund: Jul 2023
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/company/mayfield-fund
- X (Twitter): http://twitter.com/MayfieldFund
- Website: http://www.mayfield.com
- Facebook: http://www.facebook.com/MayfieldFund

Mayfield Fund is a VC fund in Menlo Park focused on Software and Internet. Mayfield is an early-stage venture capital firm that focuses on investing in enterprise, deeptech, and human and planetary health sectors. The firm partners with founders from inception to build impactful companies, leveraging its extensive experience and resources.

## Contacts

5 contacts available for Mayfield Fund. Shizune tracks 13 team members at Mayfield Fund. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/mayfield-fund?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Series A | $4.3M–$52M |
| Series B | $6M–$45M |
| Series C | $8M–$75M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 92 | 17% |
| Internet | 45 | 8% |
| Enterprise Software | 34 | 6% |
| Information Technology | 33 | 6% |
| SaaS | 29 | 5% |

284 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 120 | 22% |
| Series A | 107 | 20% |
| Series C | 79 | 14% |
| Seed | 49 | 9% |
| Funding Round | 45 | 8% |

14 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 245 | 45% |
| India | 28 | 5% |
| China | 4 | 1% |
| United Kingdom | 4 | 1% |
| France | 1 | 0% |

8 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Arvind Gupta | Partner | 125 | https://shizune.co/investors/profile/arvind-gupta-3 |
| Tim Chang | Partner | 40 | https://shizune.co/investors/profile/tim-chang |
| Kamini Ramani | Chief Marketing Officer | 0 | https://shizune.co/investors/profile/kamini-ramani |
| Navin Chaddha | Managing Director | 89 | https://shizune.co/investors/profile/navin-chaddha |
| Nikhil Khattau | Managing Director, India | 15 | https://shizune.co/investors/profile/nikhil-khattau |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Lumilens | Lumilens creates photonics products designed for high-performance computing. | $700M | Series C | Aug 06, 2026 |  |
| Bespoke Labs | Bespoke Labs is an applied artificial intelligence research company that develops reinforcement learning environments, data curation systems, and infrastructure for training and evaluating AI agents. The company builds simulation environments that mirror real-world software systems, enabling organizations to improve the reliability and performanceof AI agents in production settings. It also develops tools for agent evaluation, prompt optimization, benchmarking, and reinforcement learning research, alongside open datasets and evaluation frameworks for AI model development. Bespoke Labs collaborates with AI research organizations and enterprises to support the development, testing, and optimization of long-horizon AI agents for complex workflows. | $31.8M | Series A | Jul 06, 2026 |  |
| Hang Ten Systems | Hang Ten Systems is an enterprise AI services company that helps large organizations turn AI investments into measurable business outcomes. | $32M | Seed | Jun 24, 2026 |  |
| Upscale AI | Upscale AI is a high‑performance AI networking company accelerating AI democratization with open‑standard and full‑stack turnkey solutions. | $190M | Series A | Jun 22, 2026 |  |
| AttoTude | AttoTude develops interconnect technology for artificial intelligence and hyperscale data center environments. The company designs terahertz (THz) communication solutions that enable high-speed data transfer between computing systems and network components. Its technology focuses on addressing bandwidth, power consumption, scalability, andconnectivity challenges associated with large-scale AI processing and data-intensive workloads. | $52M | Series C | Jun 15, 2026 |  |
| Sekai | Sekai is an AI‑powered content platform that enables users to create and live immersive, interactive stories | $20M | Series A | Jun 01, 2026 |  |
| Exaforce | Exaforce is an Agentic SOC platform that consists of AI agents (called Exabots) and an advanced data exploration platform. This transforms how SOC teams do alert triage, investigations, detection & response (D&R), and threat hunting. | $125M | Series B | May 12, 2026 |  |
| OpenLight | OpenLight is a manufacturing industry. | $50M | Series A | Apr 28, 2026 |  |
| NeuBird | NeuBird is a first-of-its-kind cloud-based generative operations platform for enterprises. | $19.3M | Venture - Series Unknown | Apr 06, 2026 |  |
| Cognichip | Cognichip is an AI-first deep tech company focused on transforming the semiconductor industry by revolutionizing how chips are designed. The company has developed Artificial Chip Intelligence (ACI®), the world’s first physics-informed AI foundation model specifically tailored for semiconductor design | $60M | Series A | Apr 01, 2026 |  |

10 of 545 investments shown.

## Co-investors
- [Accel](https://shizune.co/investors/profile/accel) — VC Fund, 24 deals together
- [Trinity Ventures](https://shizune.co/investors/profile/trinity-ventures) — VC Fund, 20 deals together
- [Khosla Ventures](https://shizune.co/investors/profile/khosla-ventures) — VC Fund, 17 deals together
- [StepStone Group](https://shizune.co/investors/profile/stepstone-group) — VC Fund, 17 deals together
- [U.S. Venture Partners](https://shizune.co/investors/profile/us-venture-partners) — VC Fund, 17 deals together
- [Kleiner Perkins](https://shizune.co/investors/profile/kleiner-perkins-caufield-byers) — VC Fund, 14 deals together

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## FAQ

### What does Mayfield Fund invest in?

Mayfield Fund invests primarily in Software, Internet and Enterprise Software startups, most often at Series B and Series A stage. Most of the 545 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 Mayfield Fund's check size?

Mayfield Fund typically joins rounds of $4.3M–$52M at Series A, $6M–$45M at Series B and $8M–$75M at Series C. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Mayfield Fund participates in.

### How do I contact Mayfield Fund?

Public channels for Mayfield Fund 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 Mayfield Fund?

The team at Mayfield Fund includes Arvind Gupta (Partner), Tim Chang (Partner) and Kamini Ramani (Chief Marketing Officer), among 13 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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