Participated · Series C · Mar 2026

Terrestrial Bio (formerly Vaxess Technologies) is advancing a proprietary microarray patch (MAP) and preloaded applicator platform that applies a patch resembling an adhesive bandage and releases bioactive tips into the skin which dissolve and rapidly deliver their payload. The MAP platform is designed for self-administration, is temperature-stable, and eliminates the need for medical sharps or refrigeration. The company positions the technology for precise, controlled delivery of a wide range of therapeutics. Terrestrial is led by CEO Rachel Sha and is based in Woburn, MA. To support late-stage clinical development and early commercial entry, the company signed a lease for a more than 40,000-square-foot manufacturing facility at Allston Labworks and plans to incorporate automation, robotics, computer vision, and quality-control processes during buildout beginning in 2026.

Participated · Series B · Dec 2025

pH7 Technologies operates a commercial PGM extraction facility in Vancouver and is scaling its mining-sector applications beginning with copper. Its proprietary closed-loop organo-electrochemical process is designed to recover metals from low-grade sulfide ore, tailings, and complex feedstocks that have been historically uneconomic or challenging to process. The company’s proposed copper production approach aims to convert low-grade sulfide ore directly into 99.9% pure copper cathodes on-site while generating green hydrogen as a by-product. pH7 says the process could increase recovery from low-grade resources, extend the value of existing mining assets, and strengthen domestic critical mineral supply chains. Current plans include engineering and technology development phases to produce technical and economic data to support future demonstration and commercial deployment across the Canadian mining sector.

Participated · Series A · May 2025

Realta Fusion is building CoSMo fusion™, a compact, scalable and modular magnetic-mirror fusion system that traps super-heated hydrogen between high-field magnets to generate carbon-free heat or electricity for industrial users such as data centers, chemical processors, metal recyclers and remote mines. The company spun out of a U.S. Department of Energy ARPA-E–funded experiment at the University of Wisconsin-Madison that set a 17-Tesla magnetic-mirror field record using high-temperature superconducting magnets. CEO and co-founder Kieran Furlong positions Realta’s approach as a lower-capital path to commercial fusion compared with alternative concepts. Current work focuses on de-risking the physics of its reactor while progressing toward commercialization. Financially, Realta recently closed a $9.5 million growth capital debt facility from Silicon Valley Bank, adding to a $36 million Series A led by Future Ventures and a 2023 seed round led by Khosla Ventures (undisclosed size). These funds provide runway for continued technology validation and system development.

Participated · Series B · Jan 2025

VEIR designs superconducting power-delivery products that provide up to 10× the power of traditional cables at the same voltage, enabling a smaller electrical footprint for AI-focused data centers and higher-capacity transmission corridors. Its solutions aim to improve data-center efficiency, reduce server latency, simplify campus electrical designs, and enable existing transmission lines to carry significantly more power within the same corridor. VEIR targets customers across data centers, utilities, and renewable energy developers to accelerate grid resilience and global decarbonization. The company positions superconductors as a way to relieve interconnection bottlenecks and integrate new generation onto the grid. VEIR is based in Woburn, Mass., and is pursuing commercialization of its product portfolio. The company recently closed a major financing to support those commercialization efforts. Veir develops next-generation superconducting electric transmission technology designed to carry much higher electrical currents with negligible losses by cooling lines with liquid nitrogen. The company’s proprietary system aims to increase transmission capacity relative to the current grid while using existing rights of way, which can ease siting and permitting for developers. Veir operates an outdoor demonstration of its technology and is focused on delivering full product specifications for each subsystem. Led by CEO Tim Heidel, the company plans to use new funding to advance product development across its subsystems. No revenue or user metrics were disclosed in the article. Veir is a Boston, MA–based company led by CEO Adam Wallen that develops an evaporative cryogenic cooling technology platform for high-temperature superconductor electricity transmission. Its platform is designed to increase the amount of power transmitted at lower voltages in smaller right-of-ways, connecting low-cost renewable resources to demand centers. The company raised a $10M Series A, bringing total funding to date to more than $12M. The round was led by Breakthrough Energy Ventures, with participation from existing investor Congruent Ventures and new investor The Engine. Veir intends to use the capital to scale its team—hiring technical talent in cryogenics and the energy industry as well as operational and sales staff—and to begin developing and testing critical subsystems required for grid deployment. The company also plans to establish a physical development site in Massachusetts to support commercial development and testing.

Participated · Series B · Jul 2024

ZwitterCo develops zwitterionic membranes that deliver unprecedented immunity to organic fouling, extending membrane life and performance in challenging water streams. Its technology targets high-strength industrial wastewater, surface water, and food process streams to drive sustainable water reuse and reduce chemical use. Over the past two years ZwitterCo’s products have been ordered or installed at more than 50 industrial facilities across North America, Europe, and Asia, with customer examples including 80% fermentation wastewater recycling, 400,000 gallons per day of clean water generation at an RNG facility, and a 10% increase in water production at a power plant. The company recently commissioned an Innovation Center at its headquarters near Boston and says it will use new funds to accelerate international expansion and rapid advancement of its technology platform. ZwitterCo positions its membranes as critical for industries in the low-carbon transition to reliably and affordably access unconventional water sources while lowering operating costs and downtime. The company emphasizes the role of its technology in addressing growing water scarcity driven by climate change. ZwitterCo leverages patented zwitterionic copolymers to produce advanced membranes designed to repel organic fouling and address tough wastewater separation challenges. Its first product, a superfiltration (SF) membrane introduced in 2021, targets challenging industrial wastewaters for treatment and reuse. Since launching the SF, the company has booked over a dozen commercial projects and completed dozens of successful pilots across digestates, leachates, O&G-produced water, poultry & dairy, bioprocessing, and food & beverage wastewaters. ZwitterCo also pursues novel process applications where fouling recovery and ruggedness are essential, such as protein extraction from bio-fermentation. Led by co-founders Alex Rappaport (CEO) and Chris Drover (CTO), the company is building a suite of membrane products that bring precision and reliability to historically underserved markets. The company raised $33M in a Series A to support product development and scale commercial deployment. ZwitterCo provides hydrophilic, fouling-resistant membranes that can filter process water and wastewater rich in fats, oils, proteins and other hard-to-remove organics. The company targets applications in bioprocessing, agricultural waste treatment, food and beverage, and other industries where standard membranes foul and degrade. ZwitterCo was spun out of Tufts University and founded in 2018. It is actively demonstrating its technology in seven processing plants across North America while preparing to scale operations to support full commercial deployments. The company recently closed a $5.9 million Series Seed financing to complete final field testing, expand commercial production, and support its growing list of customers and channel partners. ZwitterCo has also received recognition and funding from the U.S. Department of Energy, the Massachusetts Clean Energy Center, the National Science Foundation, and is an alumnus of Imagine H2O and Greentown Labs.