Transaction · 0002160743-26-000013

Xu Shanshan

Xu Shanshan, SR, reported a transaction classified as unknown at Bambusa Therapeutics, Inc. involving 10450.000000 shares for an estimated $0.00. Reported holdings after the transaction were 0.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

unknownSEC transaction code CSR
BBTXBambusa Therapeutics, Inc.
Trade date
Nov 02, 2026
Filing date
Nov 02, 2026
View on SEC Insider profile
Disclosed value$0Shares × reported price
Shares traded10.4k$0.00 per share
Holdings after0Indirect · See footnote
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

BBTX price since this filing

Daily closing prices, with the filing date and available return windows
BBTX · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago1d ago
Returns since7d30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
unknown
Code C
Identifier
0002160743-26-000013
Series Seed Preferred Stock
Transaction date
Nov 02, 2026
Filed Nov 02, 2026, 09:04 PM · 0d delay
Shares
10,450 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
0 sh
Indirect · See footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction
Filing-only score

-12 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • timely_filing+4 points

    reporting_delay_days = 0

    Filing reported within two business days of the transaction.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

See remarks

Officer YesDirector Yes10% YesOther No
Footnotes & amended
  1. F1

    All shares of the preferred stock, par value $0.00001 per share, of the Issuer automatically converted on a one-for-one basis to shares of the Issuer's common stock, par value $0.00001 per share ("Com…

  2. F2

    Shares held by The Shanshan Xu 2025 Irrevocable Family Trust ("Xu Trust"). The Reporting Person may be deemed to share voting and dispositive power with respect to the shares held by the Xu Trust.

  3. F3

    Shares held by MiNeng, Inc. ("MiNeng"). The Reporting Person is the President and sole stockholder of MiNeng and therefore has sole voting and dispositive power with regard to the shares held by MiNen…

Original filing · 0002160743-26-000013
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