Renergen (ASX:RLT) and ASP Isotopes (ASPI) have reached an agreement on the terms of a conditional all-share takeover bid that would see the NASDAQ-listed advanced materials company acquire the energy company via a scheme of arrangement, according to a Wednesday filing with the Australian bourse.

Under the proposed deal, to create a critical materials company, Renergen shareholders will receive 0.09196 ASPI shares for each Renergen share held, the filing said.

The offer represents a premium of about 41.3% based on the 30-day volume-weighted average prices of both companies' shares up to May 16, the filing added.