Sam Ruben, MBA, MPA

Impact Entrepreneur/Senior Sustainability Advisor - Addressing Intractable Problems via Innovation

📍 United States🔄 Updated September 2026💼 8 investments📅 4 years investing🗓 Last invested Dec 2023
VC🌍 United States
8
Total investments
3
Early stage
1
Mid stage
1
Late stage
4y
Years active

Portfolio

8 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Angel Investor
Dec 2023
RainStick is a WiFi-enabled smart shower that saves up to 80% water and energy while providing almost double the flow rate compared to a traditional shower. North American orders are open.
Angel Investor
Sep 2023
Swyft Cities revolutionizes mobility and transforms real estate, enabling more vibrant livable communities
Angel Investor
Jun 2023
Our mission is to provide innovative nature-based solutions that help to decarbonize and green future cities. We believe that by integrating living walls and green roofs with smart building technology, we can create more sustainable, livable, and resilient urban environments that support the transition to a low-carbon future.
Angel Investor
Jun 2023
Rise strives to make sustainable home improvement easy and accessible for everyone. As a one-stop online store, we offer a curated selection of building products that are backed by educational content and research. Our direct-to-consumer/contractor approach is designed to provide products that meet the highest standards for energy efficiency, durability, and environmental responsibility. Whether youre building or renovating, our vetted building products will help you reduce your carbon footprint, lower energy costs, and create a more sustainable living or working environment. Trust that your projects will not only perform at the highest level, but also contribute to a better future for our planet.
Angel Investor
May 2023
FieldNavs software suite was developed hand-in-hand with gas and electric utility field crews and supervisory teams to optimize field usage and adoption. Leveraging a lean, design-think approach, FieldNav was built to enable real-time, geo-spatial field asset data.
early stageUtilities
Angel Investor
Feb 2023
Bundle is the first procurement platform that enables builders and suppliers to buy, sell, and manage construction materials from quote to delivery.
Angel Investor
Dec 2022
Tangible uses AI to power smarter design and material decisions.
Angel Investor
Jun 2022
Wreno is an end-to-end vendor compliance management and sourcing platform for the real estate industry. Our partners range from property managers to home builders. In just a few clicks, our customers achieve easy vendor enrollment, complete vendor compliance, an all-in-one vendor database, and a mobile-friendly experience. Wreno’s network of vendors ensures all of our real estate partners always have a predictable capacity of qualified vendors on demand. Wreno is backed by Lerer Hippeau, Fifth Wall, Owl Ventures, NFX and other prominent VCs.
early stageReal Estate
Experience · 14 entries
All (14)
Investments (8)
Founder (3)
2024
Co-Founder/Chief Biz Dev Officer
Jan 2024
Renewable and low-cost energy with Power-Plant-in-a-Box™
2023
Angel Investor
Dec 2023
RainStick is a WiFi-enabled smart shower that saves up to 80% water and energy while providing almost double the flow rate compared to a traditional shower. North American orders are open.
Angel Investor
Sep 2023
Swyft Cities revolutionizes mobility and transforms real estate, enabling more vibrant livable communities
Angel Investor
Jun 2023
Our mission is to provide innovative nature-based solutions that help to decarbonize and green future cities. We believe that by integrating living walls and green roofs with smart building technology, we can create more sustainable, livable, and resilient urban environments that support the transition to a low-carbon future.
Angel Investor
Jun 2023
Rise strives to make sustainable home improvement easy and accessible for everyone. As a one-stop online store, we offer a curated selection of building products that are backed by educational content and research. Our direct-to-consumer/contractor approach is designed to provide products that meet the highest standards for energy efficiency, durability, and environmental responsibility. Whether youre building or renovating, our vetted building products will help you reduce your carbon footprint, lower energy costs, and create a more sustainable living or working environment. Trust that your projects will not only perform at the highest level, but also contribute to a better future for our planet.
Show all 14 entries ↓
Investment activity
2022–2023 · 8 investments
2022220236
Recent (last 2 years)Earlier