Participated · Series B · Jun 2026

Dawn Aerospace develops reusable space transportation systems, including the Aurora spaceplane and the Loop in-orbit refueling network. The company plans for the Aurora spaceplane to become the first vehicle to fly twice-daily to the Kármán line in 2027. Its Loop refueling network is targeting an in-orbit demonstration in 2028, and Dawn said it will demonstrate in-orbit refueling of its satellite propulsion systems in 2028. Financially, Dawn recently closed a US$25 million Series B at a $195 million post-money valuation led by Balerion Space Ventures. The company intends to use the Series B proceeds to accelerate global expansion of its reusable space transportation business. No operating metrics or founding year were disclosed in the sourced article.

Participated · Series A · Jan 2026

Array Labs is preparing to launch what it describes as the world's first coordinated fleet of radar satellites to provide high-resolution, continuously updated intelligence worldwide, operating day or night and through clouds. The company has validated core formation-flying and multistatic radar technologies and has secured competitive R&D contracts with DARPA, the U.S. Navy, and the U.S. Air Force. Array is headquartered in Redwood City, Calif., and is backed by investors including Y Combinator, Catapult Ventures, Kompas VC, and Washington Harbour Partners. In July 2026 Array raised an additional $21 million in an oversubscribed strategic round anchored by Mitsubishi Electric, which also entered a partnership with Array to develop maritime and aircraft tracking services for defense and security customers in the Asia-Pacific region. The company positions this strategic capital to advance its technology and commercialization efforts, though specific financial metrics and revenue figures were not disclosed in the announcement.

Participated · Seed · Nov 2025

Maritime Fusion is designing a compact tokamak fusion reactor that will be installed on oceangoing vessels rather than on land. Leveraging advances in high-temperature superconducting (HTS) magnets, AI-driven design, and modern computing, the startup aims to deliver safe, meltdown-free fusion power directly at sea, where it can compete with costly alternative marine fuels like ammonia and hydrogen. The company is already assembling HTS cables from Japanese-sourced tape; these cables will both serve its own reactor and be sold to third parties to generate early revenue. Its first planned power plant, dubbed Yinsen, is expected to generate roughly 30 MW of electricity, measure about eight meters across, and cost an estimated $1.1 billion to build. Maritime Fusion projects Yinsen will be operational by 2032, with certain ancillary processes such as fuel handling performed on shore to simplify onboard systems. Unlike some competitors developing demonstration-only machines, Maritime Fusion intends for its first tokamak to deliver commercial power to a paying customer. The company participated in Y Combinator’s Winter 2025 batch and is led by co-founder and CEO Justin Cohen.

Participated · Series A · Aug 2024

Intramotev develops autonomous, zero-emission battery-electric railcars (TugVolt and Revolt) designed to move freight without traditional locomotives. Its self-propelled TugVolt units can operate independently in captive, point-to-point use cases and be rapidly expanded across the existing 140,000 miles of U.S. track without additional infrastructure. The company aims to decarbonize and improve asset utilization in the freight supply chain that moves about $690B worth of goods by rail annually in the U.S. Intramotev plans to continue deploying its technology to customers across the U.S. and abroad. The company was founded in 2020 in St. Louis, MO, by Tim Luchini, PhD, Corey Vasel, and Alex Peiffer. It recently closed a $14M Series A to support those deployment plans. Intramotev is developing autonomous, zero-emission rail vehicles and rail-autonomy software aimed at transforming freight movement. The company is building a commercial demonstration vehicle and proprietary autonomy software to reduce reliance on diesel locomotives and improve asset utilization. Its technology targets traditional freight rail as well as applications in mining, ports, and intermodal freight movement. Intramotev says its solutions will help decarbonize the supply chain and address capacity constraints in existing freight infrastructure. Founded in 2020 in Saint Louis, MO, by Tim Luchini, Corey Vasel, and Alex Peiffer, the company emphasizes reducing diesel use for the roughly $690B of goods moved by rail annually in the U.S. Idealab NY incubated Intramotev and the company cites potential to lessen the roughly 37 million metric tons of greenhouse gases locomotives emit annually.

Participated · Seed · Mar 2024

Allium Engineering develops a stainless steel cladding process for rebar intended to resist corrosion and extend the life of infrastructure. The company has demonstrated its manufacturing process at industrial scale with a domestic steel mill partner, producing tons of stainless clad rebar that met AASHTO M 329M commercial-sale requirements. Allium plans to bring a new Boston-area manufacturing facility online in July 2024 capable of producing tons of stainless-clad steel each day and aims to produce more than a thousand tons of stainless clad rebar within the next two years. Planned commercial installations this year include a bridge in Walton County, Florida and a sea wall in Key West, with additional projects planned in Florida, California, Virginia, and Indiana. The company says its stainless clad rebar can more than triple bridge component lifetimes from around 30 years to greater than 100 years and avoid up to twenty-times its weight in carbon emissions through avoided concrete and steel consumption. Allium is hiring for technical, business development, and engineering operations roles to support manufacturing and commercialization.