TSMC to sell 8.1% Vanguard Semiconductor stake
Rhea-AI Filing Summary
Taiwan Semiconductor Manufacturing Company Limited (TSMC) plans to sell up to 152.0 million common shares of Vanguard International Semiconductor (VIS), representing about 8.1% of VIS’s fully diluted paid-in capital, through a block trade to financial institutional investors. TSMC currently owns approximately 27.1% of VIS on a fully diluted basis and expects its stake to decline to around 19% after the transaction. The company states that this sale will not affect its strategic relationship with VIS, including outsourcing of interposer production and licensing of GaN technology, and describes the move as part of a broader plan to concentrate resources on core business activities. TSMC highlights its scale by noting that in 2025 it deployed 305 distinct process technologies and manufactured 12,682 products for 534 customers.
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Key Figures
VIS shares to be sold: 152.0 million shares
Portion of VIS capital: 8.1%
Current VIS ownership: 27.1%
+4 more
7 metrics
VIS shares to be sold
152.0 million shares
Planned block trade to financial institutional investors
Portion of VIS capital
8.1%
Share of VIS fully-diluted paid-in capital represented by sale
Current VIS ownership
27.1%
TSMC stake in VIS on a fully diluted basis before sale
Expected VIS ownership
19%
Approximate TSMC stake in VIS after completion of sale
Process technologies
305
Distinct process technologies deployed by TSMC in 2025
Products manufactured
12,682
TSMC products manufactured in 2025
Customers served
534
TSMC customers in 2025
Key Terms
block trade, fully-diluted paid-in-capital, GaN technology, pure-play foundry, +1 more
5 terms
block trade financial
"through a block trade to financial institutional investors"
A block trade is a large, privately arranged sale or purchase of a company's shares or bonds between big investors, often negotiated to avoid upsetting the public market price. Think of it like selling a truckload of goods directly to one buyer instead of unloading it on a busy street — it moves a lot of supply at once and can signal shifting demand, affect immediate liquidity, and influence short-term stock prices.
fully-diluted paid-in-capital financial
"approximately 8.1% of VIS’ fully-diluted paid-in-capital"
GaN technology technical
"licensing of GaN technology to VIS"
pure-play foundry financial
"TSMC pioneered the pure-play foundry business model"
interposer production technical
"including outsourcing of interposer production and licensing"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What stake in Vanguard International Semiconductor is TSM (TSMC) selling?
TSMC plans to sell up to 152.0 million VIS common shares, equal to about 8.1% of VIS’s fully diluted paid-in capital. The sale will be executed via a block trade to financial institutional investors.
Why is TSM (TSMC) selling part of its stake in Vanguard International Semiconductor?
TSMC describes the share sale as part of its plan to focus resources on core business activities. The company indicates that reducing its VIS stake supports this strategy without changing strategic cooperation or technology licensing arrangements with VIS.
Will TSM’s (TSMC’s) strategic relationship with VIS be affected by the sale?
TSMC states the proposed share sale will not affect strategic relations with VIS. It specifically notes that outsourcing of interposer production and the licensing of GaN technology to VIS will continue despite the reduction in its shareholding.
What recent governance change did TSM (TSMC) make regarding VIS?
TSMC notes that in June 2024 it ceased to have representation on VIS’s board of directors. This governance change preceded the announced sale and aligns with TSMC’s move to reduce its ownership stake while maintaining strategic cooperation.
How large is TSM’s (TSMC’s) overall foundry business based on 2025 activity?
TSMC reports that in 2025 it deployed 305 distinct process technologies and manufactured 12,682 products for 534 customers. These figures underscore the company’s scale as a leading pure-play semiconductor foundry with a broad technology and customer base.
AI-generated analysis. How Rhea-AI works. Not financial advice.
1934 Act Registration No. 1-14700
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____________________________
FORM 6-K
_____________________________
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 UNDER
THE SECURITIES EXCHANGE ACT OF 1934
For the month of May 2026
(Commission File Number: 001-14700)
_____________________________
Taiwan Semiconductor Manufacturing Company Limited
(Translation of Registrant’s Name Into English)
_____________________________
No. 8, Li-Hsin Road 6
Hsinchu Science Park
Hsinchu 300-096, Taiwan
Republic of China
Republic of China
(Address of Principal Executive Offices)
_____________________________
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F x Form 40-F o
Indicate by check mark if the registrant is submitting the Form 6-K in papers as permitted by Regulation S-T Rule 101(b)(1): o
Indicate by check mark if the registrant is submitting the Form 6-K in papers as permitted by Regulation S-T Rule 101(b)(7): o
| SIGNATURES | |||||||||||||||||||||||
| Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. | |||||||||||||||||||||||
| Taiwan Semiconductor Manufacturing Company Limited | ||||||||||||||
| Date: May 15, 2026 | By | /s/ Wendell Huang | ||||||||||||
| Wendell Huang | ||||||||||||||
| Senior Vice President and Chief Financial Officer | ||||||||||||||
TSMC to Sell 8.1% of Vanguard International Semiconductor
HSINCHU, Taiwan, R.O.C., May 15, 2026 – TSMC (TWSE: 2330, NYSE: TSM) plans to execute the sale of up to 152.0 million common shares of Vanguard International Semiconductor Corporation (“VIS”), or approximately 8.1% of VIS’ fully-diluted paid-in-capital through a block trade to financial institutional investors.
The proposed share sale will not affect TSMC’s strategic relations with VIS, including outsourcing of interposer production and licensing of GaN technology to VIS. The proposed share sale is part of TSMC’s plan to focus its resources on core business activities. In June 2024, TSMC ceased to have representation on VIS’ board of directors.
TSMC currently holds approximately 27.1% of VIS shares on a fully diluted basis. Upon the completion of this share sale, TSMC expects to reduce its shareholding in VIS to approximately 19%. TSMC has no plan to sell more VIS shares in the foreseeable future.
About TSMC
TSMC pioneered the pure-play foundry business model when it was founded in 1987 and has been the world’s leading dedicated semiconductor foundry ever since. The Company supports a thriving ecosystem of global customers and partners with the industry’s leading process technologies and portfolio of design enablement solutions to unleash innovation for the global semiconductor industry. With global operations spanning Asia, Europe, and North America, TSMC serves as a committed corporate citizen around the world.
TSMC deployed 305 distinct process technologies, and manufactured 12,682 products for 534 customers in 2025 by providing the broadest range of advanced, specialty and advanced packaging technology services. The Company is headquartered in Hsinchu, Taiwan. For more information please visit https://www.tsmc.com.
# # #
| TSMC Spokesperson: | Media Contacts: | |||||||||||||
| Wendell Huang Senior Vice President and CFO | Nina Kao Head of Public Relations Tel: 886-3-5636688 ext.7125036 Mobile: 886-988-239-163 E-Mail: press@tsmc.com | |||||||||||||