Transaction · 0001231919-26-001533
BBTXBambusa Therapeutics, Inc.
Ra Capital Management, L.P.
RA CAPITAL MANAGEMENT, L.P., DIR, reported an open-market or private purchase at Bambusa Therapeutics, Inc. involving 189909.000000 shares for an estimated $2702405.07. Reported holdings after the transaction were 189909.000000 shares. A 10b5-1 reference was not detected in the stored filing text.
Open-market buySEC transaction code PDIR
- Trade date
- Oct 30, 2026
- Filing date
- Nov 03, 2026
How reported position traded is calculated
New position: there is no prior reported position to use as a percentage baseline.
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 windowsBBTX · 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
- Type
- Buy Code P
- Identifier
- 0001231919-26-001533 Common Stock
- Transaction date
- Oct 30, 2026 Filed Nov 03, 2026, 11:09 PM · 4d delay
- Shares
- 189,909 sh $14.23 per share
- Estimated value
- $2.70M Computed from shares × price
- Holdings after
- 189,909 sh Indirect · See footnotes
Filing signal explanations
Badges describe filing facts only — not predictions.
Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Buy Director Buy Large Buy Large Holdings Increase 10% Owner Buy
Filing-only score
+50 points
Compact filing score computed from stored Form 4 facts. Version v1.
Strong filing signal
This filing has a high positive filing-only score. It may deserve closer research, but it is not an investment recommendation.
How this score is calculated
- open_market_purchase+12 points
transaction_code = P
Code P is a discretionary open-market purchase. - director_buy+6 points
is_director = true
Director open-market purchase. - cluster_buy+14 points
cluster-buy signal matched
Multiple insiders bought within the configured window. - large_buy_absolute+10 points
large-buy signal with absolute_triggered = true
Open-market purchase exceeds the configured absolute threshold. - large_holdings_increase+8 points
large-holdings-increase signal matched
Reported acquired shares meet the configured percentage of post-transaction holdings.
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
No officer title
Officer NoDirector Yes10% YesOther No
Footnotes & amended
- F1
The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.61 to $14.58 inclusive. The Reporting Persons undertake to p…
- F2
RA Capital Management, L.P. (the "Adviser") is the investment manager for RA Capital Healthcare Fund, L.P. (the "Fund") and RA Capital Nexus Fund III, L.P. (the "Nexus Fund III"). The general partner…
- F3
Held directly by the Fund.
- F4
The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.65 to $15.00 inclusive. The Reporting Persons undertake to p…
- F5
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…
- F6
Held directly by the Nexus Fund III.
Related transactions
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