Suman Mallick

Managing Director, Portfolio Manager at Keystone National Group | Angel Investor, Board Member

📍 United States🔄 Updated September 2026💼 9 investments📅 2 years investing🗓 Last invested Mar 2026
VC🌍 United StatesInvested this year
9
Total investments
0
Early stage
4
Mid stage
3
Late stage
2y
Years active

Portfolio

7 investments · sorted by recency
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Early stage
Mid stage
Late stage
Angel Investor
Mar 2026
At Variablegrid, we specialize in EV charging solutions for buildings with limited electrical capacity. Our patented "Charge Smarter" technology revolutionizes how EV Energy Management Systems (EVEMS) are implemented. Our technology seamlessly adapts to existing infrastructure while preparing for future energy demands. Our Approach: Adaptive Charging: Our system intelligently adapts to the buildings current electrical capacity, enabling the electrification of every parking space without the need for expensive infrastructure upgrades. Fair Power Distribution: Ensures equitable energy allocation across all charging points, maximizing efficiency and user satisfaction. Future-Ready: Proactively anticipates and adjusts to increasing energy demands, safeguarding your investment in green technology. Advanced Technology at Work: Leveraging real-time power measurements and sophisticated AI, Variablegrid facilitates dynamic load management and phase balancing. This guarantees optimal charging for every vehicle, ensuring efficiency, safety, and reliability. We are not just charging electric vehicles; were empowering a sustainable electric future.
Board Observer
May 2025
We equip business owners with an industry-tailored credit card, bank account, and bill pay platform — built to solve the cash flow issues holding you back.
Angel Investor
Feb 2025
Capwell Services develops cost-effective methane capture units for oil and gas operators, specializing in low and intermittent flow vents.
Angel Investor
Dec 2024
Binary Bridge creates hi-tech solutions for humanitarian medical teams and rural clinics in low-resource countries, allowing them to serve more people and provide better care than ever before. Tracking patient history is a struggle in developing countries, but it is necessary to provide effective care and to help identify preventable illnesses, injuries, and deaths, helping governments to more effectively allocate resources. Existing Electronic Medical Record (EMR) solutions are complex, expensive, and rely on a steady internet connection. Weve created BackpackEMR, a portable, rugged, simple EMR that works offline, shares data with other devices without the internet, and uploads to the cloud when connected. Our mobile application allows medical teams in remote locations to help more people, save costs, and provide better care.
Angel Investor
Oct 2024
Pecos Wind Power designs, builds, and sells wind turbines for distributed generation. We are currently developing the PW85 turbine, an 85kW wind turbine that will break down the barriers to distributed wind power making wind power more accessible to schools, businesses, and towns. We are taking an engineering approach to reducing turbine LCOE, increasing capacity factors, and enabling innovative business models to make the switch to wind a financially smart and hassle free decision.
Impact Angel Investor
Sep 2024
The angels at the SWAN Impact Network are bound together by a passion for making the world a better place by supporting dynamic startups that are striving to address serious challenges that our society faces. SWAN focuses on companies who expect to deliver measurable social or environmental impact, and who also have solid plans for financial success.
Angel Investor
Sep 2024
Little Feet Packaging makes Pubble Wrap, the 0 plastic replacement for bubble wrap.
Experience · 15 entries
All (15)
Investments (9)
Board (2)
2026
Angel Investor
Mar 2026
At Variablegrid, we specialize in EV charging solutions for buildings with limited electrical capacity. Our patented "Charge Smarter" technology revolutionizes how EV Energy Management Systems (EVEMS) are implemented. Our technology seamlessly adapts to existing infrastructure while preparing for future energy demands. Our Approach: Adaptive Charging: Our system intelligently adapts to the buildings current electrical capacity, enabling the electrification of every parking space without the need for expensive infrastructure upgrades. Fair Power Distribution: Ensures equitable energy allocation across all charging points, maximizing efficiency and user satisfaction. Future-Ready: Proactively anticipates and adjusts to increasing energy demands, safeguarding your investment in green technology. Advanced Technology at Work: Leveraging real-time power measurements and sophisticated AI, Variablegrid facilitates dynamic load management and phase balancing. This guarantees optimal charging for every vehicle, ensuring efficiency, safety, and reliability. We are not just charging electric vehicles; were empowering a sustainable electric future.
Angel Investor
Jan 2026
Skyven Technologies works with industrial manufacturers by recovering waste heat to produce clean, emissions-free steam using their Arcturus steam generating heat pump. Skyven’s proven Energy-as-a-Service model allows industrial manufacturers to improve efficiencies and reduce operating costs without the upfront capital expenditure. Skyven provides dashboards showing real-time data-backed savings and project metrics.
2025
Board Member
Jul 2025
NexPlasmaGen incorporated is a Canadian privately held company dedicated to providing noninvasive plasma technologies to the health care systems to fight cancer. We first focus on reducing breast cancer recurrence rates to improve patients survival rates at difference local stages of the disease and to reduce hospitals and patients costs associated with recurrence. Our plasma technology is safe, efficient, versatile and portable and has been proven in preclinical trials. Safety clinical trials are in preparation for 2023.
Board Observer
May 2025
We equip business owners with an industry-tailored credit card, bank account, and bill pay platform — built to solve the cash flow issues holding you back.
Angel Investor
Feb 2025
Capwell Services develops cost-effective methane capture units for oil and gas operators, specializing in low and intermittent flow vents.
Show all 15 entries ↓
Investment activity
2024–2026 · 9 investments
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