Bambusa Therapeutics director Ra Capital Management L.P. buys $46.6 million of shares
Open market purchase reported on Form 4, filed Nov 3, 2026.
Snapshot
Ra Capital Management L.P., a director of Bambusa Therapeutics (BBTX), bought 2,953,820 shares in open market purchases between Oct 30, 2026 and Nov 2, 2026, about $46.6 million at an average price of $15.79 a share, according to a Form 4 filed with the SEC on Nov 3, 2026.
- Independent Research
Market Data
| Company | 1D % | Price |
|---|---|---|
| ($BBTX) | ▼ −1.37% | 15.85 |
as of 16:00 ET · Realtime derived data
What We Know
The filing lists 4 open market purchase lines: • Oct 30, 2026: 189,909 shares at $14.23. • Oct 30, 2026: 263,911 shares at $14.92. • Nov 2, 2026: 2,335,109 shares at $16.00. • Nov 2, 2026: 164,891 shares at $16.00.
After the last purchase, the filing reports 1,495,971 shares held indirectly in that account.
Octans View
An open market purchase is made with the insider's own money at the market price, unlike option exercises or stock awards, which this brief excludes. The filing does not say why the insider bought. The filing is a joint filing with 4 related reporting persons; the purchases are counted once.
Bear Case · Room for Disagreement
Limits. Insiders must report trades within two business days; this brief covers one filing and does not net it against sales by the same person or other insiders. Prices are as filed; where a line shows a weighted average, the filing's footnotes give the range.
Method and source. Octans Research reads the structured Form 4 filed with the SEC, keeps open market purchases (code P) only, and computes the total value and the average price from the filed share counts and prices. The filed price must sit within 25% of the closing price on the trade date. The text is generated by a fixed template; no model wrote it.
Sources
- [1]SEC EDGAR — Form 4 filed by Ra Capital Management L.P. for Bambusa Therapeutics, Nov 3, 2026
These are the sources this piece was drafted from. How we verify. Found an error? Tell us and we correct it in public.
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