Invest Green Acquisition Corporation (NASDAQ:IGAC, IGACU, IGACW) operates as a blank check company incorporated in the Cayman Islands whose principal business activity is to effect a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company focuses its acquisition efforts primarily on the renewable energy, sustainable finance and nuclear energy sectors, targeting industries that support the global clean energy transition while providing sustainable, reliable and affordable energy solutions; it offers no current products or operational services beyond pursuing such initial business combinations. Headquartered at 445 Park Avenue, 9th Floor, New York, NY 10022, United States, with phone (332) 275-5814, the company was founded in 2025 and led by CEO Andrew McLean, co-founder and CEO of Invest Green Enterprises. In its most recent development, Invest Green Acquisition Corporation closed an upsized initial public offering on November 26, 2025, raising $172.5 million through the sale of 17.25 million units at $10.00 each, including the full exercise of the underwriters' over-allotment option for 2.25 million additional units; the units, comprising one Class A ordinary share and one right to receive one-tenth of a Class A ordinary share upon business combination consummation, began trading on Nasdaq under IGACU, with separated shares and rights expected to trade as IGAC and IGACR, respectively, underwritten by Cohen & Company Capital Markets as sole book-running manager. The company has no subsidiaries, employees or current revenues, positioning it to leverage its management team's expertise in sustainable investment for competitive advantage in targeted sectors.