MILAN, July 13 (Reuters) - Nuclear energy startup Newcleo is pressing ahead with its plan to list on the Nasdaq stock exchange, a transaction that could provide badly needed funds for its innovative business, regulatory filings showed.

• The firm, which is developing advanced modular lead-cooled fast reactors and nuclear fuel from reprocessed nuclear material, filed documents with the U.S. Securities and Exchange Commission (SEC) last week.

• The company founded by Italian physicist Stefano Buono plans to list on the Nasdaq through a merger with NewHold Investment Corp III NHIC.O in the second half of the year.

• Newcleo's net loss widened to €140 million ($160 million) in 2025 from €110 million in 2024 as research and development and general expenses increased while revenue fell, documents filed with the SEC showed.

• The company's cash fell to €105 million from €193 million in 2024.

• Auditing firm Grant Thornton signalled doubts about Newcleo's ability to continue as a going concern due to its recurring net losses.

• The company aims to raise up to $429 million through its listing, the filing showed.

• Newcleo will work with Sam Altman-backed Oklo Inc. OKLO.N on a programme launched by the U.S. Department of Energy to explore the potential use of the country's Cold War-era plutonium as nuclear reactor fuel.

($1 = 0.8749 euros)