** Shares of nuclear fuel recycling firm Oklo rise 3.4% to $23.86 premarket
** OKLO signs a letter of intent to buy Atomic Alchemy, a U.S.-based company specializing in the production of radioisotopes, for $25 mln in an all-stock transaction
** Co says deal to help reduce the supply gap for radioisotopes, used in healthcare and technology industries
** Upon closing, prospective deal is expected to have minimal immediate impact on Oklo's operating cost structure
** Proposed transaction is not expected to impact Oklo's previously announced 2024 forecast
** As of last close, OKLO up 118.56% YTD
(Reporting by Pooja Menon in Bengaluru)
((Pooja.Menon@thomsonreuters.com;))