Jihong Kim

Vice President | Managing Director at Samsung Ventures America

📍 Menlo Park, California, United States🔄 Updated September 2026💼 23 investments📅 13 years investing🗓 Last invested Apr 2026
VC🌍 United States20+ investmentsInvested this year
23
Total investments
4
Early stage
8
Mid stage
6
Late stage
13y
Years active

Portfolio

23 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Apr 2026
XBOW is the autonomous offensive security company redefining cyber defense for the AI era. Combining AI reasoning with offensive security workflows, the XBOW platform delivers expert-level security testing at machine speed. XBOW empowers security teams to transform from reactive to proactive defense at AI scale. For XBOW customers, autonomous offense is the best defense.
Investor
Dec 2025
WitnessAI is the confidence layer for enterprise AI, providing the unified platform enterprises trust to observe, control, and protect all AI activity. We govern your entire workforce, human employees and AI agents alike, with network-level visibility that illuminates shadow AI and intent-based controls that understand context rather than just keywords. We deliver runtime security for models, applications, and agents, deployable through network integration or lightweight APIs, blocking novel threats before they compromise your systems and filtering harmful outputs before they reach users. Our single-tenant architecture ensures data sovereignty and compliance, transforming security into the enabler of your AI strategy. Learn more at https://witness.ai.
Investor / Board Observer
Jun 2025
Exo (pronounced “Echo”) is a medical imaging software and devices company. Exo believes everyone around the world should have access to high-quality, affordable and easy-to-use medical imaging. The company is on a mission to modernize medical imaging through its high-performance ultrasound platform and artificial intelligence. Exo’s goal is to enable healthcare professionals to make critical, real-time decisions that ultimately improve patient outcomes. Our powerful ecosystem combines high-performance imaging, FDA-cleared AI and workflow software thats designed to make medical imaging as simple as using a smartphone.
Investor
Feb 2025
Our mission is to architect AI that learns and interacts like humans. Try Sonic and Ink at https://play.cartesia.ai
Investor
Jun 2024
Subtle Medical is a medical imaging software company. Our goal is to improve the quality, value, and accessibility of medical imaging by significantly reducing cost, imaging time, and radiation dose. We use the state-of-art proprietary deep learning AI algorithms to renovate the radiology workflow to deliver faster, safer and smarter imaging for imaging providers and the patients they serve.
Investor
May 2023
Were an AI research company that builds reliable, interpretable, and steerable AI systems. Our first product is Claude, an AI assistant for tasks at any scale. Our research interests span multiple areas including natural language, human feedback, scaling laws, reinforcement learning, code generation, and interpretability.
Investor
May 2023
Verdagy is innovating advanced electrolysis technology for the large-scale production of clean hydrogen. Its industry-leading solution reduces both upfront capital costs and ongoing operating expenses, to achieve the industry’s lowest levelized cost of hydrogen. In addition to its California factory, Verdagy operates its R&D and highly automated commercial plants in Moss Landing, California where it continues to advance its cutting-edge technology.
Investor
2023
GGWP helps games harness their data to create safer and more positive experiences for their players. Our ambition is to transform game moderation: by thoughtfully leveraging AI to identify and respond to toxic incidents and empowering moderators to become superhuman with automation and streamlined tools.
Investor
2023
Phantom AI’s mission is to democratize the use of advanced driver-assistance systems (ADAS) to reduce accidents, save lives and make driving more enjoyable, while delivering tomorrow’s self-driving technology. Founded by a team with deep automotive and AI expertise, Phantom AI provides a comprehensive autonomous driving platform featuring computer vision, sensor fusion and control capabilities. Phantom AI has created the most accurate and highest-performing AI solutions available today that meet car manufacturer requirements, at a much lower price than existing solutions.
Investor
2022
Vizion automatically pushes the most complete, standardized, and detailed container tracking events to any software system or spreadsheet, so logistic service providers, shippers, and other stakeholders get end-to-end visibility into the freight that drives their business.
Investor / Board Observer
2021
The next big thing in displays will come from thinking REALLY REALLY small, and 1000x brighter. Seamless digital to Real World experience!
Investor
2021
We protect the world’s critical infrastructure from cyber threats. Our platform uniquely combines network and endpoint visibility, threat detection, and AI-powered analysis for faster, more effective incident response. Customers rely on us to minimize risk and complexity while maximizing operational resilience. www.nozominetworks.com
Board Observer
2019
Plume is the creator of the first cloud-managed Wi-Fi and subscriber experience platform for Internet Service Providers. Today, more than 450 ISPs, such as Bell, Charter, Jio, J:Com, Liberty Global, and half-a-billion devices rely on our SaaS platform to build better connections with their customers. We turn in-home device and application data into intelligence that improves performance, strengthens security, and delivers personalized, always-on experiences across homes, MDUs, and small businesses. What we deliver: • Cloud-managed, hardware-independent WiFi • AI-driven optimization for speed, reliability, and proactive issue resolution • Always-on security for smartphones, PCs, and IoT • Smart home services and access controls • Operational analytics and care tools that reduce costs and increase subscriber satisfaction Why ISPs choose Plume: With unmatched global insights, Plume provides the intelligence, flexibility, and innovation velocity ISPs need to differentiate on experience, reduce churn, and win in competitive markets. Plume helps ISPs deliver the simple, reliable, and secure experiences customers expect every day.
Investor
2019
SentinelOne is the worlds leading AI-powered cybersecurity platform. The SentinelOne Singularity platform, built on the first unified Data Lake, is revolutionizing security operations, with AI, solving use cases across Endpoint Protection, SIEM, Cloud Security, Identity Threat Detection and 24x7 Managed Threat Services. SentinelOne empowers the world to run securely by creating intelligent, data-driven systems that think for themselves, stay ahead of complexity and risk, and evolve on their own. Leading organizations—including Fortune 10, Fortune 500, and Global 2000 companies, as well as prominent governments – trust SentinelOne to Secure Tomorrow™. Learn more at sentinelone.com. ----------------------------------------------------------------------------- We are recognized in leading 3rd party forums such as; - Gartner Endpoint Protection Magic Quadrant as a Leader 2021, 2022, 2023, 2024, 2025 - Gartner Peer Insights Customer Choice for Endpoint Protection - Gartner Peer Insights Customer Choice Managed Detection & Response - Gartner Peer Insights Customer Choice Cloud-Native Application Protection Platform (CNAPP) - G2 #1 Ranked Cloud Workload Protection Platform - Mitre ATT&CK 100% Detections, No Delays 2020, 2021, 2022, 2023, 2024 - Mitre Managed Services 100% Major Step Detections - Fortune Fifty 2024 - Deloitte Fast 500; 2019, 2020, 2021, 2022, 2023, 2024 - CRN Cloud & Security 100 - CRN Most Influential CEOs - CRN Top 10 Coolest GenAI Products, PurpleAI To learn more about our products and services, please visit our website at sentinelone.com to schedule a demo
Investor
2019
Fetch Robotics, now part of Zebra Technologies, is the pioneer of On-Demand Automation — the only solution that deploys safe, reliable, and versatile Autonomous Mobile Robots (AMRs) for the warehousing and intralogistics markets in just hours. Together, Fetch Robotics and Zebra provide the broadest range of AMR solutions in the industry resulting in demonstrable improvements in throughput, efficiency and productivity within both commercial and industrial environments — all while working alongside people.
Show all 23 investments ↓
Experience · 32 entries
All (32)
Investments (23)
Board (6)
2026
Investor
Apr 2026
XBOW is the autonomous offensive security company redefining cyber defense for the AI era. Combining AI reasoning with offensive security workflows, the XBOW platform delivers expert-level security testing at machine speed. XBOW empowers security teams to transform from reactive to proactive defense at AI scale. For XBOW customers, autonomous offense is the best defense.
2025
Investor
Dec 2025
WitnessAI is the confidence layer for enterprise AI, providing the unified platform enterprises trust to observe, control, and protect all AI activity. We govern your entire workforce, human employees and AI agents alike, with network-level visibility that illuminates shadow AI and intent-based controls that understand context rather than just keywords. We deliver runtime security for models, applications, and agents, deployable through network integration or lightweight APIs, blocking novel threats before they compromise your systems and filtering harmful outputs before they reach users. Our single-tenant architecture ensures data sovereignty and compliance, transforming security into the enabler of your AI strategy. Learn more at https://witness.ai.
Investor / Board Observer
Jun 2025
Exo (pronounced “Echo”) is a medical imaging software and devices company. Exo believes everyone around the world should have access to high-quality, affordable and easy-to-use medical imaging. The company is on a mission to modernize medical imaging through its high-performance ultrasound platform and artificial intelligence. Exo’s goal is to enable healthcare professionals to make critical, real-time decisions that ultimately improve patient outcomes. Our powerful ecosystem combines high-performance imaging, FDA-cleared AI and workflow software thats designed to make medical imaging as simple as using a smartphone.
Investor
Feb 2025
Our mission is to architect AI that learns and interacts like humans. Try Sonic and Ink at https://play.cartesia.ai
2024
Investor
Jun 2024
Subtle Medical is a medical imaging software company. Our goal is to improve the quality, value, and accessibility of medical imaging by significantly reducing cost, imaging time, and radiation dose. We use the state-of-art proprietary deep learning AI algorithms to renovate the radiology workflow to deliver faster, safer and smarter imaging for imaging providers and the patients they serve.
Show all 32 entries ↓
Investment activity
2013–2026 · 23 investments
201312014220161201732018120193202122022120234202412025320261
Recent (last 2 years)Earlier