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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•37 filings

NBP

NovaBridge Biosciences

Net sales of $8.4K over the last 3 months

2 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$8,421

0 buyers · 2 sellers

12-month purchases

$577,300

1 distinct insiders

12-month sales

$31,785

2 distinct insiders

Highlighted alerts

6

0 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

35
Raw transactions
Everything returned by the filing
6
Voluntary view
P/S trades after deterministic checks
29
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
Code
S
Shares
107,978
Price
$0.74
Footnotes
4

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer. The Reporting Person sold 46,947 ADSs representing approximately 107,978 ordinary shares in connection with the partial vesting of a restricted stock unit award on September 3, 2026, solely to satisfy tax withholding obligations incurred in connection with the vesting. Reported securities are represented by 46,947 ADSs. Reported sales price represents the converted sales price of the ADSs of $1.6908.

Raspberry interpretation
Informational — no alert

Reason: tax_withholding. The filing footnotes identify tax withholding.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

6 transactions

Dennis Phillip Andrew

Chief Medical Officer

SaleAlert
Shares
8,209
Price
$0.71
Value
$5,828
Open SEC filing

Xu Cong Claire

EVP, Clinical Development

SaleAlert
Shares
3,282
Price
$0.79
Value
$2,593
Open SEC filing

Xu Cong Claire

SVP, Clinical Development

SaleAlert
Shares
4,485
Price
$0.89
Value
$3,992
Open SEC filing

Dennis Phillip Andrew

Chief Medical Officer

SaleAlert
Shares
8,494
Price
$0.66
Value
$5,606
Open SEC filing

Xu Cong Claire

SVP, Clinical Development

SaleAlert
Shares
3,494
Price
$3.94
Value
$13,766
Open SEC filing

Hagler Mark Arnold

See Remarks

PurchaseAlert
Shares
230,000
Price
$2.51
Value
$577,300
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.