REGENT's $240M Series B Funds Seaglider Production

Half of REGENT Craft's $240M Series B is debt, and that detail gives the financing a physical address. Erebor Bank's $120M commitment is tied to tooling and equipment for a completed 255,000-square-foot factory in Rhode Island, where the Seaglider developer now has to turn flight-test progress into repeatable production.

Mare Liberum and AE Ventures co-led the $120M equity portion. DCVC joined the round, while Founders Fund, Caffeinated Capital, Lockheed Martin Ventures, Japan Airlines, and Giant Step Capital returned, giving REGENT a capital group that spans maritime strategy, aerospace, defense, aviation, deep technology, and industrial banking.

The official August 27, 2026 announcement brings REGENT to more than $340M raised across equity and debt. The financing is intended to scale manufacturing, advance certification, support the first full-scale human flight of the Viceroy prototype, and prepare customer deliveries, while valuation and detailed debt terms remain undisclosed.

Why REGENT split the Series B between equity and debt

REGENT is financing several kinds of risk at the same time. Flight testing and certification carry technical and regulatory uncertainty, while production equipment, tooling, supplier commitments, and factory systems create tangible industrial needs with a different financial profile. The equal split puts venture capital beside debt because the company is no longer funding only a prototype program.

Mare Liberum invests around maritime technology and national security, and AE Ventures is the venture platform of AE Industrial Partners. Erebor Bank is supplying the debt, with company leadership describing that capital as a way to unlock major tooling and equipment purchases. Each institution is underwriting a different piece of the same transition from engineering development to production.

The capital structure also deserves accounting discipline. The full $240M should not be described as equity, and REGENT's more than $340M raised to date combines equity and debt. No valuation, ownership percentage, debt pricing, covenant package, or maturity schedule was disclosed in the public announcement.

A Seaglider moves through three modes and one certification path

REGENT's Seaglider is a maritime craft designed to float at a dock, rise onto hydrofoils, and fly in ground effect just above the water. The all-electric Viceroy is designed to carry 12 passengers at speeds up to 180 mph across routes up to 180 miles with current battery technology, while Squire applies the architecture to autonomous defense missions.

The company has already crossed several technical milestones. REGENT flew a quarter-scale demonstrator in 2022, began full-scale Viceroy sea trials in 2025, and reported ground-effect flight of Squire in 2026, but the first full-scale Viceroy human flight remains ahead. Commercial certification must still turn engineering evidence into regulatory approval before passenger service can begin.

That sequencing creates a difficult production problem. A manufacturer can purchase equipment and establish supplier relationships before every test is complete, but it cannot let factory momentum outrun the evidence required for a safe and certifiable vessel. REGENT must keep design decisions, testing results, tooling choices, and quality processes synchronized while the program is still learning.

Commercial and defense demand are pulling on the same factory

REGENT reports more than $10B in commercial orders across six continents and says multiple years of manufacturing capacity are booked. The company also reports an expanded $15M U.S. Marine Corps contract and growing interest in its defense systems, which helps explain why investors from maritime, aerospace, aviation, and national security joined the same financing.

Those figures are company-reported demand and contracted work, not recognized revenue or audited sales. An order book measures customer intent under the terms attached to those orders, while delivered vessels require successful testing, certification, production, acceptance, and service support. The distance between those records is where REGENT's new capital will be judged.

Commercial and defense customers may value the same float, foil, and fly architecture for different reasons. Passenger and cargo operators are interested in connecting coastal routes without building airport infrastructure, while defense users are focused on speed, reach, logistics, surveillance, and flexibility across maritime environments. Serving both can expand the addressable market, but it also puts different mission requirements, procurement cycles, and reliability expectations onto one technology and one manufacturing organization.

Billy Thalheimer and Michael Klinker enter the production chapter

Billy Thalheimer and Michael Klinker founded REGENT in late 2020. Thalheimer serves as co-founder and CEO, responsible for aligning customers, financing, partnerships, and the production transition, while Klinker serves as co-founder and CTO, leading the technology through testing and into a configuration that manufacturing can reproduce.

The founders' operating problem is changing. Early progress could be demonstrated by a prototype crossing from hydrofoil into flight, but factory progress will show up in supplier quality, process capability, inspection records, assembly time, test repeatability, and the discipline to correct problems before they become fleet problems. A successful flight matters, and so does the ability to build the next vessel to the same standard.

REGENT's completed factory raises the cost of delay while giving the company a place to build that discipline. The facility can bring structural assembly, wing and hydrofoil integration, battery and systems installation, and water-based testing closer together, but square footage does not create production knowledge on its own. That knowledge arrives through controlled repetition, documented evidence, and hard feedback from every vehicle.

The Series B finances a chain of handoffs

REGENT's next milestones are linked. Viceroy must complete full-scale human flight, certification evidence must satisfy regulators, tooling must become a stable production system, suppliers must deliver repeatable components, and finished vessels must pass acceptance before customers can put them into service. A delay at one handoff can consume the time and capital reserved for the next.

The financing gives REGENT more room to manage that chain, but it does not erase the underlying obligations. The company still has to prove its delivery schedule, convert reported demand into operating fleets, support commercial and defense customers, and keep a novel maritime aircraft reliable in environments that are not gentle with machinery.

The most consequential part of the round will not stay on the cap table. It will move through purchase orders for equipment, supplier drawings, quality records, test campaigns, regulator reviews, and the first finished Seagliders leaving Rhode Island. REGENT has financed the whole path at once, and the path now has to work as one system.