Sean Sang Sub Lee

Investment Director, Prosperity7 Ventures (Aramco) | 아람코 벤쳐스 이사

📍 San Francisco, California, United States🔄 Updated September 2026💼 26 investments📅 8 years investing🗓 Last invested Apr 2026
VC🌍 United States20+ investmentsInvested this year
26
Total investments
4
Early stage
11
Mid stage
6
Late stage
8y
Years active

Portfolio

25 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor and Board Member
Apr 2026
Cart.com is the leading provider of unified commerce and logistics solutions that enable B2C and B2B companies to master omnichannel commerce, from product discovery to order delivery. The company’s enterprise-grade software, services and logistics infrastructure, including its own network of fulfillment and distribution centers, are used by some of the world’s most beloved brands and most complex companies to streamline operations across channels and drive more efficient growth. With over 6,000 customers, 1,600 employees and a nationwide network of 18 fulfillment and distribution centers spanning over 10 million square feet, Cart.com is transforming how commerce works in the omnichannel world.
Investor
Feb 2026
Gimlet Labs is an applied research lab dedicated to building next-generation AI infrastructure.
Investor
Feb 2026
Upscale ai delivers scalable, standards-based open AI backend networks designed to meet the speed, scale, and control that AI workloads require.
Investor
Nov 2025
Axiado is a leading hardware-anchored platform security solutions company deploying a novel, AI-driven approach to platform security against ransomware, supply chain, side-channel, and other cyberattacks in the growing ecosystem of cloud data centers, 5G networks, and other disaggregated compute networks. We offer a new processor called the Trusted Control/Compute Unit (TCU) that redefines security from the ground-up. Its hardware-anchored and AI-driven security technologies include Secure Vault root-of-trust/cryptography core and per-platform Secure AI pre-emptive threat detection engine.
Investor
Mar 2025
Frore Systems is a pioneer in advanced thermal technologies that unleash performance across data centers and edge devices. The company’s flagship solutions include LiquidJetTM, a multi-stage 3D short-loop jetchannel multi-stage liquid cooling coldplate for data centers delivering higher GPU performance, improved PUE and reduced TCO; LiquidJetTM Nexus, a light weight integrated coldplate system that integrates multiple LiquidJets and eliminates all hoses, connectors and manifolds enabling ½U compute trays and AirJet®, the world’s first solid-state active air-cooling chip used in consumer, industrial, and IoT markets delivering higher performance in ultra-compact, silent, light, dustproof and water-resistant edge devices. Frore Systems’ patented cooling technologies are integrated into products from major OEMs and system builders worldwide. Headquartered in Silicon Valley, with manufacturing operations in Taiwan, Frore Systems is redefining thermal architecture for the AI era.
Investor (Series C)
Dec 2024
We develop the foundational fabric devices and technologies for the age of AI and accelerated computing at scale.
Investor
Nov 2024
Semiconductor interconnects
Lead Investor and Board Member
Oct 2024
Investor and Board Member
Sep 2024
The heart of SiFive is RISC-V! SiFive creates the building blocks of RISC-V-based IP that are the inevitable innovative reimagining of every computing platform.
Lead Investor (Series A) and Board Member
Jul 2024
Lineajes full-lifecycle software supply chain security is designed to meet the specific compliance, governance and automation needs of companies that source, build, deploy, sell or buy critical software. Its technology allows organizations to autonomously and effectively source safe software, contextualize risks, auto-secure builds, and manage risk and compliance. Customers use Lineaje to know what is in their software, eliminate vulnerability exposure, deploy self-healing containers, auto-fix all vulnerabilities and comply with global regulations. The company is trusted by top technology, financial and public sector organizations that must secure and manage critical code, complex software supply chains and large software portfolios.
Investor
May 2024
Inference is the engine that powers AI, and Groq was built from the silicon up to deliver the worlds fastest inference at scale. We pioneered the LPU—the first processor designed specifically for AI inference—and are transforming that innovation into a global cloud platform powering production AI workloads. With the capital, infrastructure, and team to execute, were uniquely positioned to define the next era of AI infrastructure. The opportunity is massive, and its still wide open. Now lets go build it!
Lead Investor (Series D)
Feb 2024
Celona is an early pioneer and innovator within the multi-billion-dollar private wireless market. The company is credited with developing the industry’s first fully turnkey enterprise 5G LAN system that leverages emerging shared cellular spectrum to enable companies, for the first time. To own and operate their private mobile network infrastructure. Its products and technology help organizations accelerate the adoption of business-critical applications and use cases to support a new generation of Industry 4.0 digital business initiatives. Founded in 2019 by industry leaders with technical expertise in cellular, enterprise wireless and cloud computing, the company is privately held. To date, Celona has raised $100 million from premiere investors including Qualcomm Ventures, NTT Venture Capital, Lightspeed Venture Partners, Norwest Venture Partners, Cervin Ventures and DigitalBridge. Celona’s private wireless system solves long-standing wireless issues such as reliability, coverage, deterministic connectivity, quality of service, and security, not satisfied by conventional wireless technologies. Celona’s private wireless system is also the first-of-its kind to tightly integrate network and radio functions – full stack core software and cloud-based orchestration – into a unified solution ready for direct integration within any existing enterprise network infrastructure by enterprise IT staff. It combines all the components required to enable an IT team to build their own 4G/5G wireless networks in a single package that is easy to deploy, integrate and manage at scale. Celona sells its products and technology directly and indirectly to companies around the world through a diverse network of top channel partners, managed service providers and system integrators. And our products serve as the foundation for Verizon’s Onsite private 5G service as well as NTT’s P5G offering.
Investor
Nov 2023
Together AI is the AI Native Cloud, purpose-built for AI engineers and researchers with a full suite of tooling across inference, model shaping, and pre-training. AI natives can use Together AI as a full-stack AI platform — from a high- performance inference engine built for reliable and fast scaling to on-demand GPU clusters and massive-scale AI factories. Together AI continuously pushes the frontier forward by productizing cutting-edge research from our world-leading AI systems research team. By combining research velocity with production-grade infrastructure, we enable companies to reliably scale AI-native applications as fast as the field evolves. Trusted by leading AI natives like Cursor, Decagon, Eleven Labs, AI21, Hedra, and Cartesia, as well as SaaS innovators such as Salesforce, Zoom, and Zomato, Together AI powers the next generation of AI-native applications.
Investor
Oct 2023
Acceldata provides an Agentic Data Management platform that simplifies and speeds the ability for enterprises to deliver trusted data for AI and other initiatives. Founded in 2018, Campbell, CA-based Acceldata developed the worlds first enterprise data observability platform to help enterprises build and operate great data products. Built on that foundation, Acceldatas xLake Reasoning Engine now powers the Agentic Data Management platform. Acceldatas solutions have been embraced by global enterprises such as Nestle, Dun & Bradstreet, Hershey, Pubmatic, HCSC, PhonePe (Walmart), TPG Telecom (Australia), Jenius Bank, Merkle, Pubmatic, and many more. Acceldata investors include Insight Partners, March Capital, Industry Ventures, Lightspeed, Sorenson Ventures, Sanabil, and Emergent Ventures.
Investor
Aug 2023
Nile is a pioneer and leader in Secure Networking-as-a-Service (NaaS). It is leading a fundamental shift in the industry with a clean-slate approach that brings the power of zero-trust, autonomous operations and cloud to deliver compelling business outcomes and act as a force multiplier for IT. Nile solutions cut through complexity and cost versus legacy solutions, while delivering radical operational simplicity, security and speed with stellar user experiences.
Show all 25 investments ↓
Experience · 30 entries
All (30)
Investments (26)
Board (7)
2026
Investor and Board Member
Apr 2026
Cart.com is the leading provider of unified commerce and logistics solutions that enable B2C and B2B companies to master omnichannel commerce, from product discovery to order delivery. The company’s enterprise-grade software, services and logistics infrastructure, including its own network of fulfillment and distribution centers, are used by some of the world’s most beloved brands and most complex companies to streamline operations across channels and drive more efficient growth. With over 6,000 customers, 1,600 employees and a nationwide network of 18 fulfillment and distribution centers spanning over 10 million square feet, Cart.com is transforming how commerce works in the omnichannel world.
Investor
Feb 2026
Gimlet Labs is an applied research lab dedicated to building next-generation AI infrastructure.
Investor
Feb 2026
Upscale ai delivers scalable, standards-based open AI backend networks designed to meet the speed, scale, and control that AI workloads require.
2025
Investor
Nov 2025
Axiado is a leading hardware-anchored platform security solutions company deploying a novel, AI-driven approach to platform security against ransomware, supply chain, side-channel, and other cyberattacks in the growing ecosystem of cloud data centers, 5G networks, and other disaggregated compute networks. We offer a new processor called the Trusted Control/Compute Unit (TCU) that redefines security from the ground-up. Its hardware-anchored and AI-driven security technologies include Secure Vault root-of-trust/cryptography core and per-platform Secure AI pre-emptive threat detection engine.
Investor
Mar 2025
Frore Systems is a pioneer in advanced thermal technologies that unleash performance across data centers and edge devices. The company’s flagship solutions include LiquidJetTM, a multi-stage 3D short-loop jetchannel multi-stage liquid cooling coldplate for data centers delivering higher GPU performance, improved PUE and reduced TCO; LiquidJetTM Nexus, a light weight integrated coldplate system that integrates multiple LiquidJets and eliminates all hoses, connectors and manifolds enabling ½U compute trays and AirJet®, the world’s first solid-state active air-cooling chip used in consumer, industrial, and IoT markets delivering higher performance in ultra-compact, silent, light, dustproof and water-resistant edge devices. Frore Systems’ patented cooling technologies are integrated into products from major OEMs and system builders worldwide. Headquartered in Silicon Valley, with manufacturing operations in Taiwan, Frore Systems is redefining thermal architecture for the AI era.
Show all 30 entries ↓
Investment activity
2018–2026 · 26 investments
2018220193202112022120236202482025220263
Recent (last 2 years)Earlier