Taiwan-based ProLogium, one of the few companies in the world running a commercial-scale solid-state battery line, has agreed to become a publicly listed Nasdaq company through a merger with Translational Development Acquisition Corp (Nasdaq: TDAC), the two firms announced on May 27, 2026. The combined entity will be called ProLogium Technology and trade under the ticker PRLG.
A $3.8 billion path to public markets
The transaction values ProLogium at a pre-money valuation of about $3.8 billion and is expected to close in the second half of 2026, subject to regulatory and shareholder approvals. ProLogium said the deal will give it the capital needed to fund the next phase of its growth without going through a traditional IPO process.
The company joins a small group of solid-state battery developers that have gone public via SPAC, following QuantumScape, Factorial Energy and Solid Power. The route gives ProLogium faster access to the public markets at a time when investor interest in next-generation EV chemistries has been rising.
Scaling 4th-generation solid-state cells
Founder and CEO Vincent Yang said the proceeds will be used to scale production of ProLogium's 4th-generation superfluidized inorganic solid-state batteries, complete construction of a new gigafactory in Dunkirk, France, and expand into adjacent verticals including data centers, aerospace and robotics, alongside its core electric-vehicle business.
According to ProLogium, its latest cells have achieved an energy density of 360 Wh/kg in independent third-party testing — roughly 50% above conventional lithium-ion cells. UL Solutions ARC testing also verified that the batteries did not experience thermal runaway under the standardized Heat-Wait-Seek method, an outcome the company has positioned as a key safety advantage over current liquid-electrolyte chemistries.
From Taiwan lab to global rollout
ProLogium has been pursuing solid-state battery commercialization for more than two decades and was the first company to deliver a solid-state cell with a 100% ceramic separator instead of a polymer film. Since opening its first GWh-class gigafactory in Taoyuan, Taiwan in May 2024, the company says it has shipped more than 800,000 4th-generation cells to customers.
Construction of ProLogium's first overseas GWh-class plant in Dunkirk is scheduled to begin by the end of 2026, with production ramp planned between Q4 2028 and Q1 2029 and mass-production deliveries targeted for Q2 2029. The French facility is designed to anchor ProLogium's push into European automakers as the region tightens battery sourcing rules.
Why it matters for robotics and EVs
Solid-state batteries are widely seen as a key unlock for longer-range EVs, faster charging and safer high-energy applications such as humanoid robots and drones. ProLogium's listing follows a recent wave of robotics and clean-tech public-market moves, including Unitree's Shanghai IPO heading to listing review and Deep Fission's $157 million Nasdaq filing. Combined with continued investment in grid-scale storage projects, the listing reinforces how capital is flowing to companies trying to bridge the gap between lab-stage chemistries and mass-market hardware.
For ProLogium, the Nasdaq listing transforms a long-running R&D bet into a publicly traded story about whether solid-state batteries can finally graduate from prototype to standard equipment in the world's electric vehicle fleet.
Reporting based on coverage from Electrek, Reuters and ProLogium's joint announcement with Translational Development Acquisition Corp on GlobeNewswire.