SEC Form 4
Taiwan Semiconductor Manufacturing Company Ltd. (TSM) insider trading
In the 12 months to Oct 26, 2026, 2 TSM insiders reported open-market sales of $14.0M across 2 filings; 7 insiders bought $2.3M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $14.0M
- 2 filings · 2 insiders
- Open-market purchases
- $2.3M
- 19 filings
Who traded TSM, and when
- Purchase
- Sale
TSM daily close from Oct 27, 2025 to Oct 26, 2026, between $275.06 and $485.80, last $427.68. 2 sale and 19 purchase filings by 8 insiders, marked at their filing dates. Tzu-Sou Chuang, VP: sold $14.0M across 1 filing, first filed May 19, 2026, last May 19, 2026. Bor-Zen Tien, VP: bought $810.8K across 8 filings, first filed Mar 24, 2026, last Aug 4, 2026. Shyue-Shyh Lin, VP: bought $637.6K across 4 filings, first filed Mar 30, 2026, last Jul 22, 2026. Lipen Yuan, VP: bought $328.5K across 3 filings, first filed Jun 16, 2026, last Aug 20, 2026. Ursula M. Burns, Director: bought $322.1K across 1 filing, first filed Apr 1, 2026, last Apr 1, 2026. Shu-Hua Fang, SVP and GC: bought $154.2K across 1 filing, first filed Sep 4, 2026, last Sep 4, 2026. Choh Fei Yeap, SVP: bought $55.8K across 1 filing, first filed Mar 31, 2026, last Mar 31, 2026. Chih-Ho Chen, Controller: sold $3.8K and bought $3.7K across 2 filings, first filed Jul 16, 2026, last Jul 16, 2026.
Largest mark · tap a row for others
Tzu-Sou Chuang · VP
Sale $13,966,000
200,000 shares
Filed May 19, 2026
Close on filing date $392.61
Tzu-Sou Chuang · VP
VP
$14.0M soldBor-Zen Tien · VP
VP
$810.8K boughtShyue-Shyh Lin · VP
VP
$637.6K boughtLipen Yuan · VP
VP
$328.5K boughtUrsula M. Burns · Director
Director
$322.1K boughtShu-Hua Fang · SVP and GC
SVP and GC
$154.2K boughtChoh Fei Yeap · SVP
SVP
$55.8K boughtChih-Ho Chen · Controller
Controller
$3.8K sold$3.7K boughtOpen-market trades
21 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Tzu-Sou Chuang | VP | $14.0M | — | 1 | — | |
| Bor-Zen Tien | VP | — | $810.8K | 8 | — | |
| Shyue-Shyh Lin | VP | — | $637.6K | 4 | — | |
| Lipen Yuan | VP | — | $328.5K | 3 | — | |
| Ursula M. Burns | Director | — | $322.1K | 1 | — | |
| Shu-Hua Fang | SVP and GC | — | $154.2K | 1 | — | |
| Choh Fei Yeap | SVP | — | $55.8K | 1 | — | |
| Chih-Ho Chen | Controller | $3.8K | $3.7K | 2 | — |
| Filed | Insider | Type | Shares | Value | Held after | Source |
|---|---|---|---|---|---|---|
traded | Shu-Hua Fang SVP and GC | Purchase | 2,000 ordinary shares | $154.2K | 8,206 | |
traded | Lipen Yuan VP | Purchase | 2,350 ordinary shares | $174.0K | Multiple accounts | |
traded | Bor-Zen Tien VP | Purchase | 1,000 ordinary shares | $73.1K | 14,051 | |
traded | Bor-Zen Tien VP | Purchase | 1,015 ordinary shares | $73.8K | Multiple accounts | |
traded | Bor-Zen Tien VP | Purchase | 4,010 ADS | $301.4K | Multiple accounts | |
traded | Shyue-Shyh Lin VP | Purchase | 2,000 ordinary shares | $146.8K | 30,269 | |
traded | Shyue-Shyh Lin VP | Purchase | 3,000 ordinary shares | $215.4K | Multiple accounts | |
traded | Chih-Ho Chen Controller | Purchase | 50 ordinary shares | $3.7K | 413 | |
traded | Chih-Ho Chen Controller | Sale | 50 ordinary shares | $3.8K | 363 | |
traded | Bor-Zen Tien VP | Purchase | 2,000 ordinary shares | $152.3K | Multiple accounts | |
traded | Lipen Yuan VP | Purchase | 1,000 ordinary shares | $79.2K | 5,000 | |
traded | Lipen Yuan VP | Purchase | 1,000 ordinary shares | $75.3K | 4,000 | |
traded | Bor-Zen Tien VP | Purchase | 17 ADS | $6.7K | 107 | |
traded | Bor-Zen Tien VP | Purchase | 2,000 ordinary shares | $139.8K | 11,051 | |
traded | Tzu-Sou Chuang VP | Sale | 200,000 ordinary shares | $14.0M | 2,495,165 | |
traded | Bor-Zen Tien VP | Purchase | 20 ADS | $7.8K | 85 | |
traded | Ursula M. Burns Director | Purchase | 1,000 ADS | $322.1K | 3,000 | |
traded | Choh Fei Yeap SVP | Purchase | 1,000 ordinary shares | $55.8K | 213,375 | |
traded | Shyue-Shyh Lin VP | Purchase | 3,000 ordinary shares | $164.2K | 26,269 | |
traded | Shyue-Shyh Lin VP | Purchase | 2,000 ordinary shares | $111.3K | 23,269 | |
traded | Bor-Zen Tien VP | Purchase | 1,000 ordinary shares | $55.9K | 9,051 |
Shares are as filed (ordinary shares or ADS); values are as converted to US$ in the filing.
GET /stocks/filings/vX/form-4?tickers=TSM&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"TSM"
],
"issuer_cik": "0001046179",
"owner_cik": "0002113698",
"accession_number": "0001046179-26-000596",
"form_type": "4",
"filing_date": "2026-09-04",
"period_of_report": "2026-07-02",
"issuer_name": "TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD",
"issuer_trading_symbol": "TSM",
"owner_name": "Fang Shu-Hua",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SVP and GC",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares (2330.TW)",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-07-02",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 1000,
"transaction_price_per_share": 77.09,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 7206,
"transaction_value": 77090,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "By Immediate Family Member",
"footnotes": [
{
"id": "F3",
"description": "The price per share was translated from New Taiwan dollars, NT2,460, at the rate of NT$31.910 to US$1."
},
{
"id": "F4",
"description": "Both transactions were executed by the same Immediate Family Member."
}
]
},
{
"tickers": [
"TSM"
],
"issuer_cik": "0001046179",
"owner_cik": "0002113698",
"accession_number": "0001046179-26-000596",
"form_type": "4",
"filing_date": "2026-09-04",
"period_of_report": "2026-07-02",
"issuer_name": "TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD",
"issuer_trading_symbol": "TSM",
"owner_name": "Fang Shu-Hua",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "SVP and GC",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares (2330.TW)",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-07-02",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 1000,
"transaction_price_per_share": 77.09,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 8206,
"transaction_value": 77090,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "By Immediate Family Member",
"footnotes": [
{
"id": "F3",
"description": "The price per share was translated from New Taiwan dollars, NT2,460, at the rate of NT$31.910 to US$1."
},
{
"id": "F4",
"description": "Both transactions were executed by the same Immediate Family Member."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 242 records
- Grants and awards21 records
- Gifts6 records
- Employee stock purchase plan215 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Taiwan Semiconductor Manufacturing Company Ltd.'s CEO sold stock?
No. Che-Chia Wei (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is TSM’s insider data?
These are TSM Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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