Tzyy-Ming Cheng

Tzyy-Ming Cheng: Vice President at United Microelectronics. What Tzyy-Ming Cheng holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

United Microelectronics (UMC)

Tzyy-Ming Cheng holds 573,616 United Microelectronics shares (0.02% of the company), worth about $12.8M at the last price, according to the Form 3 of Apr 29, 2026.

• Shares held: 573,616 (0.02%), $12.8M — Held in their own name.

Declarations

• United Microelectronics (UMC) — Form 3 of Apr 29, 2026 (Vice President); 573,616 shares after 0001193125-26-210164

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

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