Bambusa Therapeutics director buys $46.6M of BBTX stock
Bambusa Therapeutics
- $46,639,957.19[1]
- 2,953,820[1]
Bambusa Therapeutics (BBTX) director RA Capital Nexus Fund III, L.P. bought $46,639,957.19 of company stock on Oct 30, 2026, a Form 4 filed with the SEC on Nov 3, 2026 shows. The filing reports a purchase (code P), submitted 4 days after the trade.[1]
| Security | Owner | Date | Code | Action | Quantity | Price | Following holdings | Reporting delay |
|---|---|---|---|---|---|---|---|---|
| Common Stock | RA Capital Nexus Fund III, L.P. | 2026-10-30 | P | Purchase | 189,909 | $14.23 | 189,909 | 4 days |
| Common Stock | RA Capital Nexus Fund III, L.P. | 2026-10-30 | P | Purchase | 263,911 | $14.92 | 453,820 | 4 days |
| Common Stock | RA Capital Nexus Fund III, L.P. | 2026-11-02 | P | Purchase | 2,335,109 | $16.00 | 5,933,787 | 4 days |
| Common Stock | RA Capital Nexus Fund III, L.P. | 2026-11-02 | P | Purchase | 164,891 | $16.00 | 1,495,971 | 4 days |
What does the Form 4 show?
It lists 4 transactions for 2,953,820 shares, at an average $15.79 a share. RA Capital Nexus Fund III, L.P. owned 1,495,971 shares after the last one.[1]
What else has the filing history shown?
What does this filing not show?
A Form 4 reports one set of trades, filed 4 days after the trade. It does not show why RA Capital Nexus Fund III, L.P. traded or what else they own.[1]
BBTX insider trading activity
In open-market trades dated in the last 90 days, 3 insiders bought $58.6M and no insider sold, per Form 4 filings.
- RA Capital Nexus Fund III, L.P. (Director) bought 2,953,820 shares for $46.6M, last filed Nov 3.
- Helmut Wolfgang Jeggle (Director) bought 375,000 shares for $6M, last filed Nov 2.
- Salvia Investment GmbH (10% owner) bought 375,000 shares for $6M, last filed Nov 2.
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