Heidi Roizen

Partner at Threshold Ventures, Corporate Director

📍 San Francisco Bay Area, United States🔄 Updated September 2026💼 16 investments📅 17 years investing🗓 Last invested Jul 2026𝕏 @upgrade_to_unlock
VC🌍 United StatesInvested this quarter
16
Total investments
2
Early stage
2
Mid stage
9
Late stage
17y
Years active

Portfolio

15 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Board Member
Jul 2026
M7 Health is the AI-powered workforce operations platform for healthcare, built for the realities of clinical staffing and scheduling. M7 uses AI to help organizations forecast demand, auto-balance schedules, and deploy the right person to fill every shift before resorting to premium labor spend. The result: health systems reduce overtime, cut contract labor costs, and give clinical leaders time back to focus on care. Built with the earned wisdom of nurses, M7 serves tens of thousands of healthcare professionals daily and activated over 100 net new hospitals across 29 states, last year alone. M7 is live in health systems nationwide, from the countrys largest academic medical centers to rural community hospitals. To request a demo, visit m7health.com.
Board Member
May 2026
Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, we unlock a new era of innovation where complex hardware is designed, built, and scaled without limits. We are a team of first-principles thinkers driven by a shared mission: to build the fundamental technology that moves the world forward. We believe that solving the foundational challenges of production requires a massive diversity of expertise, deep collaboration, low ego, and a healthy sense of humor. Whether you are an engineer, a builder of systems, or a creative problem-solver in any field, we invite you to help us align the physical world with the pace of human imagination. We are backed by industry leading VCs including Founders Fund, NVIDIAs NVenures, Threshold Ventures, Two Sigma Ventures, Linse Capital, 8VC, Valor, and more who share our conviction in scaling Physical AI to revolutionize manufacturing.
Board Member
May 2026
The OpsLevel developer portal removes engineering team friction by opening up self-serve access to the tools and knowledge your developers need to move faster.
Board Member
May 2026
World models and simulation infrastructure for physical AI.
Board Member
May 2026
EdgeQ is a leading innovator delivering the worlds first 5G Base Station-on-a-chip. Led by executives from Qualcomm, Intel, and Broadcom, EdgeQ is pioneering a converged connectivity and AI platform that is fully software-customizable and programmable. The company is backed by leading investors, including Threshold Partners, Fusion Fund and AME Cloud Ventures, among others.
Board Member
May 2026
The mission of Elementary Robotics is to spark an interest in science, technology, engineering, and mathematics at a young age, utilizing a robotics competition as a way to capture students’ imagination. This non-profit organization challenges elementary students to be creative while building a programmable, remote-controlled robot using Legos to accomplish a specific task. Students gain valuable experience by working together as a team and becoming problem solvers, public speakers, and leaders. Participation in this program will demonstrate to students that applying the science and math concepts learned in school can be fun and have real world applications.
Board Member
May 2024
Founded in 2017 by Carolyn Witte and Felicity Yost, Tia is bringing the new standard of care for women for women in NY, LA, SF and PHX. Blending in-person and virtual care services, Tia’s “Whole Woman, Whole Life” care model fuses gynecology, primary care, mental health and evidence-based wellness services to treat women comprehensively. By bringing collaborative, comprehensive, and compassionate care, Tia is raising the bar for women and empowering them to achieve optimal health, on their terms.
Board Member
Aug 2020
Lumity partners with the modern employer and employee to drive a competitive benefits program that delivers a superior experience. Our data technology, expertise, and education is designed as an end-to-end solution for high growth companies seeking to competitively recruit, engage, and scale top talent. Our partnership approach to benefits powers the employer and employee experience at Lyft, Greenhouse, GoFundMe, Robinhood, Bird, and other fast-growing modern companies.
Board Member
May 2020
From the very start, we were different. Our bar was set high: Top-quality homes managed and maintained by top-level professionals. This is how Invitation Homes became the nations premier home leasing and management company for single families. Today, Invitation Homes owns and operates 110,000+ homes in great neighborhoods across 16 top U.S. markets. We continue to innovate with smart home technology, an industry-leading maintenance app, and other lifestyle-enhancing services that make leasing easier than owning. With our unmatched know-how, stability and vision, we enable our residents to live their best life – today. No wonder Invitation Homes has nearly 80% resident retention. Our corporate office is located in Dallas, TX. We also have regional offices in Phoenix, AZ, Sacramento, CA, Los Angeles, CA, Dallas, TX, Houston, TX, Denver, CO, Las Vegas, NV, Seattle, WA, Chicago, IL, Atlanta, GA, Charlotte, NC, Miami, FL, Orlando, FL, Jacksonville, FL, Tampa, FL, and Minneapolis, MN. Recently named by Comparably as Best Places to Work in Dallas, Best Company for Diversity, Best Company for Women, and Best Perks & Benefits as rated by our own associates.
late stageReal Estate
Board Member
Sep 2019
Polarr develops AI technology for photography, video and other creative use cases to provide developers tools and resources to create world-class applications that enable and inspire everyone to make beautiful creations. Starting in 2014, Polarr has built some of the best AI powered photo and video editing tools on the market and has continuously pushed the boundaries of creativity with each iteration. Polarrs newest offering for 2023, currently in beta, is Polarr Next, the worlds first adaptive AI that learns your aesthetics on the fly, edits all your photos, and saves you hundreds of hours a year, in a single workflow.
Board Member
Mar 2018
Planet is the leading provider of global, daily satellite imagery and insights. Planet is driven by a mission to image all of Earth’s landmass every day, and make global change visible, accessible, and actionable. Founded in 2010 by three NASA scientists, Planet designs, builds, and operates the largest fleet of imaging satellites, as well as online software, tools and analytics needed to deliver data to users. Decision makers in business, government, and within organizations use Planets data and machine learning-powered analytics to develop new technologies, drive revenue, power research, and make informed, timely decisions to solve our worlds toughest challenges. Visit us at https://www.planet.com/
Board Member
Jan 2018
Meat made from cells. We’re building the future you’re hungry for. *all meat shown is UPSIDE meat https://linktr.ee/upsidefoods Cultivated meat is new to many of us, and here at UPSIDE, we encourage education, learning, and fact-based debate. We ask that, in accordance with our values, you keep the conversation respectful to each other and to us. Thanks!
Board Member
May 2016
Zoox is transforming mobility-as-a-service by developing a fully autonomous, purpose-built fleet designed for AI to drive and humans to enjoy.
early stageAutomotive
Board Member
Sep 2012
DMGT manages a portfolio of companies that provide businesses and consumers with compelling information, analysis, insight, events, news and entertainment. The Group takes a long-term approach to investment and has market-leading positions in consumer media, property information and events & exhibitions. In total, DMGT generates revenues of around £1bn.
Board Member
May 2012
Xtime helps dealers get more vehicles through the service lane in less time to maximize the opportunity of every RO by boosting technician and advisor efficiency — creating superior consumer service experiences and additional dealership revenue. With easy-to-use technology and industry experts, Xtime unlocks the power of service teams and builds consumer trust and dealership transparency, so dealers make more money. Through efficiency, convenience, and trust, Xtime facilitates more than ten million service appointments monthly. Xtime is part of a powerful set of solutions from Cox Automotive that help your marketing, sales, service, and operations workflows stay in sync.
Experience · 22 entries
All (22)
Investments (16)
Founder (1)
Board (16)
2026
Board Member
Jul 2026
M7 Health is the AI-powered workforce operations platform for healthcare, built for the realities of clinical staffing and scheduling. M7 uses AI to help organizations forecast demand, auto-balance schedules, and deploy the right person to fill every shift before resorting to premium labor spend. The result: health systems reduce overtime, cut contract labor costs, and give clinical leaders time back to focus on care. Built with the earned wisdom of nurses, M7 serves tens of thousands of healthcare professionals daily and activated over 100 net new hospitals across 29 states, last year alone. M7 is live in health systems nationwide, from the countrys largest academic medical centers to rural community hospitals. To request a demo, visit m7health.com.
Board Member
May 2026
Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, we unlock a new era of innovation where complex hardware is designed, built, and scaled without limits. We are a team of first-principles thinkers driven by a shared mission: to build the fundamental technology that moves the world forward. We believe that solving the foundational challenges of production requires a massive diversity of expertise, deep collaboration, low ego, and a healthy sense of humor. Whether you are an engineer, a builder of systems, or a creative problem-solver in any field, we invite you to help us align the physical world with the pace of human imagination. We are backed by industry leading VCs including Founders Fund, NVIDIAs NVenures, Threshold Ventures, Two Sigma Ventures, Linse Capital, 8VC, Valor, and more who share our conviction in scaling Physical AI to revolutionize manufacturing.
Board Member
May 2026
The OpsLevel developer portal removes engineering team friction by opening up self-serve access to the tools and knowledge your developers need to move faster.
Board Member
May 2026
World models and simulation infrastructure for physical AI.
Board Member
May 2026
EdgeQ is a leading innovator delivering the worlds first 5G Base Station-on-a-chip. Led by executives from Qualcomm, Intel, and Broadcom, EdgeQ is pioneering a converged connectivity and AI platform that is fully software-customizable and programmable. The company is backed by leading investors, including Threshold Partners, Fusion Fund and AME Cloud Ventures, among others.
Show all 22 entries ↓
Investment activity
2009–2026 · 16 investments
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