
Kim family shareholders launch a 10-million-share secondary sale, expanding public float in the semiconductor packaging firm.
Amkor Technology, Inc., a leading provider of outsourced semiconductor packaging and test (OSAT) services, has announced the pricing of a secondary underwritten public offering involving 10,000,000 shares of its common stock. The shares are being sold by 915 Investments, LP, an investment vehicle representing members of the Kim family, including Susan Y. Kim, the Chairman of the company’s Board of Directors. The public offering price has been set at $48.75 per share.
Under the terms of the transaction, the selling stockholder has granted the underwriter a 30-day option to purchase up to an additional 1,500,000 shares of common stock. Importantly, all shares in the offering are being sold by the selling stockholder, and the company itself is not issuing any new shares. As a result, Amkor will not receive any proceeds from the transaction.
Even after the completion of the base offering of 10,000,000 shares, the Kim family is expected to remain the company’s largest shareholder, maintaining ownership of more than 49% of Amkor’s common stock. Susan Y. Kim emphasized the family’s ongoing commitment to the company, noting that the Kim family continues to have confidence in Amkor’s long-term strategy and sees the company as uniquely positioned as a globally diversified OSAT provider.

To provide stability following the offering, the selling stockholder has agreed to a 180-day lock-up period. During this time, neither the selling stockholder nor any of its direct or indirect affiliates—other than the company and its subsidiaries—will sell, transfer, or otherwise dispose of any remaining shares, subject to certain exceptions. In addition, Amkor expects to enter into a clear market provision under which the company will agree not to offer or sell shares of its common stock for 75 days after the date of the final prospectus, also subject to customary exceptions.
Goldman Sachs & Co. LLC is serving as the sole bookrunning manager for the offering, overseeing the transaction on behalf of the selling stockholder.
The offering is being conducted under an effective shelf registration statement filed with the U.S. Securities and Exchange Commission (SEC). The registration includes a prospectus and a preliminary prospectus supplement, which provide detailed information about the company, the selling stockholder, and the terms of the offering. Investors are encouraged to review these documents through the SEC’s EDGAR system or by requesting them directly from the underwriter.
Amkor clarified that the press release does not constitute an offer to sell or a solicitation to buy the shares in any jurisdiction where such activity would be unlawful.
About Amkor Technology, Inc.
Headquartered in the United States, Amkor is one of the world’s leading providers of outsourced semiconductor packaging and test services and the largest OSAT company headquartered in the U.S. The company supports a wide range of industries with advanced packaging technologies, wafer-level processing, and system-in-package solutions.
With a broad global footprint and longstanding partnerships with major semiconductor and electronics manufacturers, Amkor plays a critical role in enabling next-generation technologies across multiple applications, including smartphones, data centers, artificial intelligence, automotive electronics, and wearable devices. The company’s focus on innovation, manufacturing excellence, and customer collaboration has positioned it as a key enabler of advanced semiconductor solutions worldwide.




