Stephen Gill

Venture Investor, Advisor / Founder @ Upper.Capital | Digital Marketing

📍 United States🔄 Updated September 2026💼 14 investments📅 14 years investing🗓 Last invested Jul 2023
Operator-angel🌍 United States
14
Total investments
6
Early stage
4
Mid stage
1
Late stage
14y
Years active

Portfolio

14 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Early Investor, BlackShark.ai
Jul 2023
Blackshark.ai is at the forefront of geospatial intelligence, leveraging cutting-edge AI and satellite technology for object detection, simulation, and creating a 3D digital twin of Earth, empowering industries with actionable insights. ORCA HUNTR is our revolutionary no-code environment that enables anyone to train, test and exploit AI/ML-powered object detection and classification, which can be applied to a variety of scenarios. Blackshark.ai SYNTH3D is a synthetic, realistic 3D replica of the surface of our planet with semantic information derived from 2D satellite and aerial imagery. The data gets streamed from blackshark.ai servers and is rendered into a realistic environment at runtime. It contains terrain elevation, buildings, vegetation coverage, and infrastructure. Blackshark.ai SYNTH3D includes the entire globe – every country, city, building, and detail is represented in a region–specific, geo-typical way.
Pre-Seed Investor, Chalk.ai
Aug 2022
The data platform for inference. Build, deploy, and iterate faster with Chalks feature engine.
Early Investor
Jun 2022
Maximus is setting a new standard in health through prescribed, personalized, and evidence-based solutions that optimize how people look, feel, and perform. Weve raised $15M from top Silicon Valley VCs like Founders Fund and 8VC, as well as leading angel investors and operators from companies like Bulletproof, Tinder, Coinbase, Daily Stoic, & Shopify.
Investor, Oura Ring Health
Apr 2022
Oura is an award-winning, fast-growing startup that helps people get up close and personal with their health. The Oura Ring and Oura App provide daily insights into sleep, activity, stress, recovery and much more. By providing daily feedback and practical steps to inspire healthy lifestyles, weve helped millions of people improve their sleep, understand their bodies, and transform their health. We’re on a mission to empower every person to own their inner potential, and we’re seeking talented individuals to join us on our journey. JOIN THE OURA TEAM We are a multi-disciplinary team of over 100 experts in hardware engineering, software development, machine learning, bioscience, sleep, industrial and UX design, production, marketing and customer experience. We always strive to learn more and dig deeper into our research and analytics, to stay engaged and creative in everything we do. We are uncompromising in delivering value to our members and our partners across the globe.. Ouraring Inc. is headquartered in San Francisco, CA
Seed Investor / Advisor
May 2021
Coffee is “wakeup technology” that has not materially improved in 1,500 years. We are changing that. 50% of Americans have a gene variant that makes metabolizing caffeine difficult, causing jitters, bloating, and stomach problems. Most people shrug their shoulders and say, “Welp, that’s coffee.” Instead of shoulder shrugging, we’ve developed a priority blend of coffee, functional mushrooms, collagen protein, and nootropics to promote focus, energy, immunity, and gut health. No crash. No B.S. We’ve served 1,000,000 customers in the past 3 years. There are 150,000,000 coffee drinkers left. We’re less than 2% done. Come join us for the remaining 98%. We offer an alternative to normal coffee and stimulants. We are the first mushroom company to combine functional mushrooms, collagen protein and nootropics to activate your DOSE (Dopamine, Oxytocin, Serotonin & Endorphins).
Seed Investor / Advisor
Apr 2021
Elemind is a neurotechnology company whose products use novel neuromodulation techniques to shape brainwaves and change brain states. Our first product is designed for faster sleep, on-demand.
Investor, MasterClass
May 2020
Launched in 2015, MasterClass is the streaming platform where anyone can learn from the worlds best. With an annual membership, subscribers get unlimited access to instructors and classes across a wide range of subjects including Arts & Entertainment, Business, Design & Style, Sports & Gaming, Writing and more. Step into Anna Wintour’s office, and Ron Finley’s garden. Get inspired by RuPaul, perfect your pitch with Shonda Rhimes, and discover your inner negotiator with Chris Voss. Each class features about 20 video lessons, at an average of 10 minutes per lesson. You can learn on your own terms — in bite-sized pieces or binge it all at once. Cinematic visuals and close-up, hands-on demonstrations make you feel one-on-one with the instructors, while the downloadable workbooks help reinforce your learning. With MasterClass, you can stream thousands of lessons anywhere, anytime, on mobile, desktop and TV.
Early Investor, Thirty Madison Telehealth (Keeps, Nurx, Cove)
Apr 2020
Thirty Madison exists to deliver on healthcares biggest opportunities: access and affordability; patient outcomes; and patient experience. With empathy at the heart of its innovation, its proprietary care model empowers hundreds of thousands of people with ongoing conditions with accessible, effective treatments across a lifetime of care. Learn more at ThirtyMadison.com.
Early Investor, Lease Lock
Jan 2020
LeaseLock is an insurtech platform that revolutionizes the rental market by replacing traditional security deposits with lease insurance. Our innovative solution removes the financial barriers renters face when leasing a new apartment and significantly enhances investment returns for property owners by preventing NOI loss.
mid stageInsurance
Early Investor, Eight Sleep
Dec 2019
Eight Sleep is the world’s first sleep fitness company. Our mission is to fuel human potential through optimal sleep. We use innovative technology, detailed design, and proven science and data to personalize and improve each night for everybody—changing the way people sleep forever and for the better. With our flagship product, the Pod, we are addressing critical sleep issues such as temperature regulation, bed elevation, snoring reduction, and the wake-up experience. Hundreds of thousands of customers around the world sleep better every night thanks to the Pod. We are backed by leading Silicon Valley investors like YC Combinator, Founders Fund, Valor, and Khosla Ventures, and we have been recognized as one of Fast Company’s Most Innovative Companies in 2018, 2022, and 2023.The Pod was also recognized two years in a row by TIMEs “Best Inventions of the Year.” We currently sell the Pod in the United States, Canada, United Kingdom, Europe, Australia, UAE, Mexico, Switzerland and Saudi Arabia.
Seed Investor, Unstoppable Domains
May 2019
Unstoppable Domains is an ICANN-accredited registrar and digital identity company building infrastructure at the intersection of DNS and onchain naming. Founded in 2018, the platform has enabled over 4.7M domain registrations across both traditional DNS extensions (e.g., .com, .info, .xyz) and Web3-native extensions (e.g., .crypto, .nft, .x) that are fully owned, user-controlled, and live onchain. Unstoppable allows users to register DNS and Web3 domains directly, tokenize supported DNS domains for onchain portability, and participate in aftermarket trading through an integrated peer-to-peer marketplace. Domain investors and portfolio owners can list or sell with low 3% commissions, lease-to-own, and transfer automation, creating new liquidity pathways for both DNS investors and Web3 domain holders.
Seed Investor, GrowFlux
Jul 2018
GrowFlux is a horticultural tech company offering automation and cloud technologies aimed at resource efficiency and yield expansion for indoor farms, and greenhouses. GrowFlux specializes in data driven cultivation techniques that provide faster time to harvest, lower energy cost, and increased yields, driving profitability in the competitive cea market and opening new opportunities to bring crops into greenhouses and indoor farms. The company offers an ecosystem of commercial scale wireless lighting controls, cloud services, and cloud connected agricultural sensors that work seamlessly together to rapidly scale the farms of the future.
Seed investor, advisor, shareholder (partial exit)
Mar 2013
MeUndies disrupted the $110B underwear industry when it launched the first online underwear subscription model in 2011. Founder Jonathan Shokrian identified a market gap during his own shopping experience. Nothing about underwear shopping was enjoyable - other brands were hyper-sexualized, overcomplicated, uncomfortable and inconvenient. He recognized that no one in the industry was offering their customers the experience that modern consumers expect. Jonathan started MeUndies to provide a fun and simple offering with a relentless emphasis on quality and service. Unlike many startup peers, MeUndies has seen tremendous success achieving profitability with double-digit YoY growth since. To date it has sold over 23M pairs of underwear in all 50 states and in 37 countries around the world. MeUndies offers both men’s and women’s underwear as well as socks, bralettes and loungewear.
Seed Investor / Advisor, MortarData (acquired by DataDog 2015)
Aug 2012
Datadog is the essential monitoring platform for cloud applications. We bring together data from servers, containers, databases, and third-party services to make your stack entirely observable. These capabilities help DevOps teams avoid downtime, resolve performance issues, and ensure customers are getting the best user experience.
Experience · 17 entries
All (17)
Investments (14)
Founder (3)
2023
Early Investor, BlackShark.ai
Jul 2023
Blackshark.ai is at the forefront of geospatial intelligence, leveraging cutting-edge AI and satellite technology for object detection, simulation, and creating a 3D digital twin of Earth, empowering industries with actionable insights. ORCA HUNTR is our revolutionary no-code environment that enables anyone to train, test and exploit AI/ML-powered object detection and classification, which can be applied to a variety of scenarios. Blackshark.ai SYNTH3D is a synthetic, realistic 3D replica of the surface of our planet with semantic information derived from 2D satellite and aerial imagery. The data gets streamed from blackshark.ai servers and is rendered into a realistic environment at runtime. It contains terrain elevation, buildings, vegetation coverage, and infrastructure. Blackshark.ai SYNTH3D includes the entire globe – every country, city, building, and detail is represented in a region–specific, geo-typical way.
2022
Pre-Seed Investor, Chalk.ai
Aug 2022
The data platform for inference. Build, deploy, and iterate faster with Chalks feature engine.
Early Investor
Jun 2022
Maximus is setting a new standard in health through prescribed, personalized, and evidence-based solutions that optimize how people look, feel, and perform. Weve raised $15M from top Silicon Valley VCs like Founders Fund and 8VC, as well as leading angel investors and operators from companies like Bulletproof, Tinder, Coinbase, Daily Stoic, & Shopify.
Investor, Oura Ring Health
Apr 2022
Oura is an award-winning, fast-growing startup that helps people get up close and personal with their health. The Oura Ring and Oura App provide daily insights into sleep, activity, stress, recovery and much more. By providing daily feedback and practical steps to inspire healthy lifestyles, weve helped millions of people improve their sleep, understand their bodies, and transform their health. We’re on a mission to empower every person to own their inner potential, and we’re seeking talented individuals to join us on our journey. JOIN THE OURA TEAM We are a multi-disciplinary team of over 100 experts in hardware engineering, software development, machine learning, bioscience, sleep, industrial and UX design, production, marketing and customer experience. We always strive to learn more and dig deeper into our research and analytics, to stay engaged and creative in everything we do. We are uncompromising in delivering value to our members and our partners across the globe.. Ouraring Inc. is headquartered in San Francisco, CA
2021
Seed Investor / Advisor
May 2021
Coffee is “wakeup technology” that has not materially improved in 1,500 years. We are changing that. 50% of Americans have a gene variant that makes metabolizing caffeine difficult, causing jitters, bloating, and stomach problems. Most people shrug their shoulders and say, “Welp, that’s coffee.” Instead of shoulder shrugging, we’ve developed a priority blend of coffee, functional mushrooms, collagen protein, and nootropics to promote focus, energy, immunity, and gut health. No crash. No B.S. We’ve served 1,000,000 customers in the past 3 years. There are 150,000,000 coffee drinkers left. We’re less than 2% done. Come join us for the remaining 98%. We offer an alternative to normal coffee and stimulants. We are the first mushroom company to combine functional mushrooms, collagen protein and nootropics to activate your DOSE (Dopamine, Oxytocin, Serotonin & Endorphins).
Show all 17 entries ↓
Investment activity
2012–2023 · 14 investments
2012120131201812019220203202122022320231
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