REGENT Adds $120M Equity and $120M Debt to Put Seagliders Into Production

REGENT has raised $240 million in Series B financing, but calling it a $240 million equity round would be wrong. The Rhode Island seaglider company says the package is split evenly between $120 million of equity and $120 million of debt. Mare Liberum and AE Ventures co-led the equity; Erebor Bank provided the debt.

That capital structure matches the company’s current transition: REGENT is moving from full-scale prototype testing toward manufacturing, certification and customer delivery. The company says the Series B brings total funding to $340 million across equity and debt.

REGENT Series B: a clean capital-stack view

Other investors supporting the round include DCVC, Founders Fund, Caffeinated Capital, Lockheed Martin Ventures, Japan Airlines and Giant Step Capital. Their participation is strategically legible: REGENT sits at the intersection of maritime transport, aerospace engineering and national security rather than fitting neatly into one venture category.

From “flying boat” demo to production risk

REGENT’s Seaglider is a high-speed, electric, wing-in-ground-effect craft. It uses three operating modes: float in harbor, foil above the water during takeoff and landing, and flight within a wingspan of the surface. The Viceroy is designed for 12 passengers; Squire is the autonomous defense-oriented platform.

The distinction between modes is not semantics. A quarter-scale prototype previously flew, and the full-scale Viceroy has undergone crewed on-water operations and hydrofoil testing. REGENT’s 2026 test campaign said the company was progressing toward a first flight with humans on board. At the same time, the Squire autonomous platform has completed ground-effect flight demonstrations. Investors should not collapse those into “the passenger craft is already in commercial flight.”

The financing lands alongside several de-risking steps:

• A 255,000-square-foot manufacturing facility in Rhode Island is complete.
• REGENT says it has an expanded $15 million U.S. Marine Corps contract for Viceroy and growing interest in Squire.
• The company says its commercial order book spans six continents and has booked multiple years of manufacturing capacity.
• Certification work is progressing with the U.S. Coast Guard and international partners, including a Japan project with MOL, Japan Airlines and Lloyd’s Register.

Orders are not revenue, and booked manufacturing capacity is not delivered inventory. The underwriting question is whether REGENT can convert a large pipeline into certified vehicles, repeatable production and safe operations at a price customers will pay.

Why the debt matters

Debt alongside venture equity can be a sign of industrial maturity: a lender is financing identifiable assets, facilities or production capacity rather than asking equity investors to fund every dollar of scale. It can also introduce a fixed repayment obligation before passenger revenue exists.

For REGENT, the debt piece makes the milestone more concrete. The company is not using the entire $240M as discretionary R&D capital; half is a financing instrument that must be serviced under its terms. The debt may accelerate the factory and equipment build-out, but it also raises the bar for certification and delivery timing.

The dual-use thesis

Commercially, Seagliders target coastal routes where ferries are slow and short-haul aircraft require airports. In defense, an electric or autonomous craft that can operate from water rather than a runway could support contested logistics, resupply and sensing missions.

The two markets can reinforce one another: commercial production volume can lower unit costs, while defense contracts can validate capability and fund specialized development. They can also pull the company in different directions. Passenger certification, crew training and reliability are not the same product requirements as autonomous military logistics.

What to watch after the raise

The next milestones are more informative than another large order announcement:

1. First human flight of the full-scale Viceroy prototype.
2. Certification progress and the regulatory treatment of a wing-in-ground-effect vessel.
3. Factory throughput and the first production-standard vehicle.
4. Conversion of commercial orders into binding delivery schedules.
5. Evidence that Squire can complete repeatable defense missions, not only demonstrations.

REGENT’s Series B is therefore best read as an industrialization round with a venture component, not a conventional $240M startup equity raise. The company now has the capital and facility to attempt the hardest part of the story: turning a compelling prototype into a certified, financeable fleet.

Sources

1. REGENT — $240M Series B announcement
2. REGENT — 2026 Seaglider test campaign
3. REGENT newsroom — facility, defense and certification milestones