SEC Form 4
Kulicke & Soffa Industries Inc (KLIC) insider trading
In the 12 months to Oct 23, 2026, 7 KLIC insiders reported open-market sales of $18.4M across 14 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $18.4M
- 14 filings · 7 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 3 of 14
- $4.1M of $18.4M sold (22%)
Who traded KLIC, and when
- Sale
- Sale, pre-arranged (10b5-1)
KLIC daily close from Oct 23, 2025 to Oct 22, 2026, between $35.29 and $133.81, last $73.40. 14 sale and 0 purchase filings by 7 insiders, marked at their filing dates. Lester A. Wong, Interim CEO and CFO: sold $7.3M across 1 filing, first filed Jun 22, 2026, last Jun 22, 2026. Nelson Munpun Wong, Senior Vice President: sold $6.1M across 5 filings, first filed Dec 10, 2025, last Jun 15, 2026. Mui Sung Yeo, Director: sold $3.4M across 2 filings, first filed Feb 17, 2026, last May 21, 2026. David Jeffrey Richardson, Director: sold $676.0K across 1 filing, first filed Feb 27, 2026, last Feb 27, 2026. Robert Nestor Chylak, Senior Vice President: sold $520.1K across 1 filing, first filed Feb 11, 2026, last Feb 11, 2026. Zi Yao Lim, General Counsel: sold $271.0K across 3 filings, first filed Dec 3, 2025, last May 12, 2026. Peter T. M. Kong, Director: sold $170.6K across 1 filing, first filed Jun 12, 2026, last Jun 12, 2026.
Largest mark · tap a row for others
Lester A. Wong · Interim CEO and CFO
Sale $7,302,552
60,000 shares at $121.71 avg
Filed Jun 22, 2026 · traded Jun 18
Close on filing date $124.22
Lester A. Wong · Interim CEO and CFO
Interim CEO and CFO
$7.3M soldNelson Munpun Wong · Senior Vice President
Senior Vice President
$6.1M soldMui Sung Yeo · Director
Director
$3.4M soldDavid Jeffrey Richardson · Director
Director
$676.0K soldRobert Nestor Chylak · Senior Vice President
Senior Vice President
$520.1K soldZi Yao Lim · General Counsel
General Counsel
$271.0K soldPeter T. M. Kong · Director
Director
$170.6K soldHas Kulicke & Soffa Industries Inc's CEO sold stock?
Yes. Lester A. Wong (CEO) sold 60,000 shares ($7.3M) in Jun 2026. Rajendra K. Talluri (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
14 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Lester A. Wong | Interim CEO and CFO | $7.3M | — | 1 | — | |
| Nelson Munpun Wong | Senior Vice President | $6.1M | — | 5 | 68% of sales | |
| Mui Sung Yeo | Director | $3.4M | — | 2 | — | |
| David Jeffrey Richardson | Director | $676.0K | — | 1 | — | |
| Robert Nestor Chylak | Senior Vice President | $520.1K | — | 1 | — | |
| Zi Yao Lim | General Counsel | $271.0K | — | 3 | — | |
| Peter T. M. Kong | Director | $170.6K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Lester A. Wong Interim CEO and CFO | Sale | 60,000 | $121.71 | $7.3M | 50,743 | |
traded | Nelson Munpun Wong Senior Vice President | Sale | 15,000 | $113.72 | $1.7M | 71,369 | |
traded | Peter T. M. Kong Director | Sale | 1,551 | $110.00 | $170.6K | 100,009 | |
traded | Mui Sung Yeo Director | Sale | 20,000 | $100.00 | $2.0M | 59,197 | |
traded | Zi Yao Lim General Counsel | Sale | 1,500 | $102.98 | $154.5K | 21,214 | |
traded | David Jeffrey Richardson Director | Sale | 9,364 | $72.20 | $676.0K | 17,694 | |
traded | Mui Sung Yeo Director | Sale | 19,143 | $71.98 | $1.4M | 78,522 | |
traded | Robert Nestor Chylak Senior Vice President | Sale | 7,098 | $73.28 | $520.1K | 22,987 | |
traded | Zi Yao Lim General Counsel | Sale | 1,000 | $71.54 | $71.5K | 22,714 | |
traded | Nelson Munpun Wong Senior Vice President | SalePre-arranged (10b5-1) | 39,800 | $60.98 | $2.4M | 86,369 | |
traded | Nelson Munpun Wong Senior Vice President | SalePre-arranged (10b5-1) | 200 | $60.00 | $12.0K | 126,169 | |
traded | Nelson Munpun Wong Senior Vice President | SalePre-arranged (10b5-1) | 30,000 | $56.53 | $1.7M | 126,369 | |
traded | Nelson Munpun Wong Senior Vice President | Sale | 5,004 | $50.07 | $250.5K | 156,369 | |
traded | Zi Yao Lim General Counsel | Sale | 1,000 | $45.00 | $45.0K | 23,714 |
GET /stocks/filings/vX/form-4?tickers=KLIC&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"KLIC"
],
"issuer_cik": "0000056978",
"owner_cik": "0001529306",
"accession_number": "0001529306-26-000003",
"form_type": "4",
"filing_date": "2026-06-22",
"period_of_report": "2026-06-18",
"issuer_name": "KULICKE & SOFFA INDUSTRIES INC",
"issuer_trading_symbol": "KLIC",
"owner_name": "Wong Lester A",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Interim CEO and CFO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-06-18",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 60000,
"transaction_price_per_share": 121.7092,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 50743,
"transaction_value": 7302552,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.2350 to $122.5100, inclusive."
}
]
},
{
"tickers": [
"KLIC"
],
"issuer_cik": "0000056978",
"owner_cik": "0001536288",
"accession_number": "0001536288-26-000009",
"form_type": "4",
"filing_date": "2026-06-15",
"period_of_report": "2026-06-12",
"issuer_name": "KULICKE & SOFFA INDUSTRIES INC",
"issuer_trading_symbol": "KLIC",
"owner_name": "WONG NELSON MUNPUN",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Senior Vice President",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-06-12",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 15000,
"transaction_price_per_share": 113.7192,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 71369,
"transaction_value": 1705788,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.00 to $115.05, inclusive."
}
]
}
]
}
// 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) · 48 records
- Option exercises8 records
- Tax withholding5 records
- Grants and awards33 records
- Gifts2 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for KLIC every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.