OneIM Acquisition Corp. is a blank check company incorporated on September 5, 2025, formed to complete a business combination. The company consummated its Initial Public Offering (IPO) on January 15, 2026, raising gross proceeds of $287,500,000 from 28,750,000 units, including the full exercise of the underwriters' over-allotment option. Simultaneously with the IPO, a private placement of 200,000 units to the Sponsor generated $2,000,000 in gross proceeds. A total of $287,500,000 from the IPO and private placement proceeds was placed into a Trust Account. Total transaction costs related to the IPO amounted to $16,732,695, which included $15,812,500 in deferred underwriting fees. For the period from inception (September 5, 2025) through September 30, 2025, the company reported a net loss of $48,286, primarily due to formation, general, and administrative expenses. As of September 30, 2025, total assets were $196,107 (consisting entirely of deferred offering costs), and total liabilities were $219,393, resulting in a shareholders' deficit of $(23,286). The company has until January 15, 2028 (or March 15, 2028, under certain conditions) to complete a business combination.