Taipei, Taiwan – June 9, 2026 (Taiwan time) — Powerchip Semiconductor Manufacturing Corporation (TWSE: 6770) (“PSMC” or “the Company”) is pleased to announce that it will raise US$886 million through the global depository shares (“GDS”) offering and employee common shares subscriptions. A total of approximately 395 million new shares will be issued for the GDS offering, and together with employee subscription, the total issuance amounts to 420 million common shares. The GDS offering was priced at US$31.65 (NT$1,000.2) per GDS on June 9, 2026, with each unit of GDS representing 15 common shares of PSMC. The issue price represents a 5.73% discount to the average price of PSMC’s common shares on June 9, 2026 which is NT$70.73. The GDS will be listed on Luxembourg Stock Exchange. The use of proceeds is for the procurement of machinery and equipment to enhance its international competitiveness.

PSMC envisions to power a digital future with better integrated logic and memory. Benefiting from the rapid growth in AI-related computing demand, global memory demand has increased significantly. PSMC has long cultivated expertise in memory-related processes, enabling it to provide customers with more comprehensive and competitive foundry services. In addition, amid the rapid expansion of demand for AI GPUs, high-performance computing (“HPC”), and large-scale data centers, advanced packaging has become one of the fastest-growing segments in the semiconductor industry. By integrating its existing wafer manufacturing technologies with its distinctive 3D AI Foundry capabilities, PSMC aims to progressively enhance its leadership in the AI supply chain.

The transaction was timed to capitalize on exceptional share price performance, launching after the stock rallied +357% over the last twelve months and +29% since the AGM approval, reflecting strong market endorsement of the Company’s strategic transformation. The offering was met with overwhelming global demand from a high-quality mix of long-only, hedge funds, and specialist technology investors, with the orderbook covered within 20 minutes and closing nearly 6 times oversubscribed, enabling the final discount to be tightened to 6.7%. The deal represents the largest technology follow-on offering in Asia year-to-date 2026 and marks the second-largest GDS issuance from Taiwan since 2008.

Goldman Sachs International and Citigroup Global Markets Limited acted as the Joint Global Coordinators and Joint Bookrunners for the offering. Morgan Stanley Asia Limited and UBS AG Hong Kong Branch acted as the Joint Bookrunners for the offering (in alphabetical order).

About PSMC

PSMC is a leading pure-play semiconductor foundry in the world, with expertise in both specialty logic and memory products. Its focuses on highly customized specialty IC solutions and operates under its “Open Foundry” model, which integrates clients’ specific device and process requirements to deliver differentiated, flexible manufacturing solutions beyond standard platforms. Leveraging this model, PSMC provides a comprehensive suite of foundry services across specialty logic, niche memory, and cutting-edge 3D AI foundry solutions, serving a broad range of end-markets, including AI data centers and AI edge devices, electric vehicles, consumer electronics, industrial, the internet of things (“IoT”), and white goods.

Disclaimer

This press release may contain forward-looking statements. These forward-looking statements are subject to risks and uncertainties. Consequently, actual results and experience may materially differ from those contained in any forward-looking statements. Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and PSMC makes no commitment to revise or update any forward-looking statements in order to reflect events or circumstances occurring or existing after the date any forward-looking statement is made.