SpaceX is exploring a potential insider share sale that could elevate its valuation to $350 billion, a significant increase from a prior $255 billion estimate. The move would solidify SpaceX’s position as the world’s most valuable private startup. The company’s previous valuation was $210 billion in a tender offer earlier this year. The ongoing discussions involve employees and early shareholders selling shares, providing liquidity as SpaceX benefits from growing ties between Elon Musk and President-elect Donald Trump.