SEC Form 4
Connect Biopharma Holdings Limited (CNTB) insider trading
In the 12 months to Oct 26, 2026, one CNTB insider reported open-market purchases of $4.4M across 2 filings; no open-market sales were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $0
- 0 filings · 0 insiders
- Open-market purchases
- $4.4M
- 2 filings · James Huang, Director
Who traded CNTB, and when
- Purchase
CNTB daily close from Oct 27, 2025 to Oct 26, 2026, between $0.76 and $3.69, last $0.85. 0 sale and 2 purchase filings by 1 insider, marked at their filing dates. James Huang, Director: bought $4.4M across 2 filings, first filed Apr 1, 2026, last Jun 2, 2026.
Largest mark · tap a row for others
James Huang · Director
Purchase $4,002,000
1,160,000 shares
Filed Apr 1, 2026 · traded Mar 31
Close on filing date $2.72
James Huang · Director
Director
$4.4M boughtOpen-market trades
2 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| James Huang | Director | — | $4.4M | 2 | — |
| Filed | Insider | Type | Shares | Value | Held after | Source |
|---|---|---|---|---|---|---|
traded | James Huang Director | Purchase | 150,000 ordinary shares | $371.6K | 13,310,000 | |
traded | James Huang Director | Purchase | 1,160,000 ordinary shares | $4.0M | 13,160,000 |
Shares are as filed (ordinary shares or ADS); values are as converted to US$ in the filing.
GET /stocks/filings/vX/form-4?tickers=CNTB&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CNTB"
],
"issuer_cik": "0001835268",
"owner_cik": "0001573160",
"accession_number": "0001193125-26-253607",
"form_type": "4",
"filing_date": "2026-06-02",
"period_of_report": "2026-05-29",
"issuer_name": "Connect Biopharma Holdings Ltd",
"issuer_trading_symbol": "CNTB",
"owner_name": "Huang James",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-29",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 150000,
"transaction_price_per_share": 2.4774,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 13310000,
"transaction_value": 371610,
"direct_or_indirect": "I",
"nature_of_ownership": "See Footnote",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $2.37 to $2.52, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above."
},
{
"id": "F2",
"description": "Panacea Venture Healthcare Fund II, L.P. is the record holder of the Ordinary Shares reported herein. James Huang is the sole owner of Panacea Innovation Limited, which is the sole owner of Panacea Venture Healthcare Fund II GP Company, Ltd., which is the general partner of Panacea Venture Healthcare Fund II, L.P. As a result, James Huang may be deemed to share beneficial ownership of the Ordinary Shares reported herein, but disclaims such beneficial ownership."
}
]
},
{
"tickers": [
"CNTB"
],
"issuer_cik": "0001835268",
"owner_cik": "0001573160",
"accession_number": "0001193125-26-138012",
"form_type": "4",
"filing_date": "2026-04-01",
"period_of_report": "2026-03-31",
"issuer_name": "Connect Biopharma Holdings Ltd",
"issuer_trading_symbol": "CNTB",
"owner_name": "Huang James",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-03-31",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 1160000,
"transaction_price_per_share": 3.45,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 13160000,
"transaction_value": 4002000,
"direct_or_indirect": "I",
"nature_of_ownership": "See Footnote",
"footnotes": [
{
"id": "F1",
"description": "Panacea Venture Healthcare Fund II, L.P. is the record holder of the Ordinary Shares reported herein. James Huang is the sole owner of Panacea Innovation Limited, which is the sole owner of Panacea Venture Healthcare Fund II GP Company, Ltd., which is the general partner of Panacea Venture Healthcare Fund II, L.P. As a result, James Huang may be deemed to share beneficial ownership of the Ordinary Shares reported herein, but disclaims such beneficial ownership."
}
]
}
]
}
// 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) · 6 records
- Grants and awards6 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
How current is CNTB’s insider data?
These are CNTB 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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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 CNTB 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.
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