Wellington Biomedical Innovation Master Investors (Cayman) II L.P. has filed 11 insider transactions across 4 companies since September 2024.
Most recent transaction: a transaction of 1275486 shares of Avalyn Pharma Inc. ($AVLN) on May 01, 2026.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 1, 2026 | Avalyn Pharma Inc. | $AVLN | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Common Stock | 1275486 | $0.00 | 1,275,486.0000 | 0 | 9999.99% | 0.00% |
| May 1, 2026 | Avalyn Pharma Inc. | $AVLN | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series D Convertible Preferred Stock | 4060259 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 1, 2026 | Avalyn Pharma Inc. | $AVLN | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series C-1 Convertible Preferred Stock | 20482289 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Jan. 30, 2025 | Metsera, Inc. | $MTSR | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series B Preferred Stock | 4365079 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Jan. 30, 2025 | Metsera, Inc. | $MTSR | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Common Stock | 1857699 | $0.00 | 1,857,699.0000 | 0 | 9999.99% | 0.00% |
| Oct. 15, 2024 | Upstream Bio, Inc. | $UPB | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Common Stock | 894733 | $0.00 | 894,733.0000 | 0 | 9999.99% | 0.00% |
| Oct. 15, 2024 | Upstream Bio, Inc. | $UPB | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series B redeemable convertible preferred stock | 852940 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 16, 2024 | MBX Biosciences, Inc. | $MBX | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Common Stock | 1386335 | $0.00 | 1,386,335.0000 | 0 | 9999.99% | 0.00% |
| Sept. 16, 2024 | MBX Biosciences, Inc. | $MBX | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series C Preferred Stock | 4854368 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 16, 2024 | MBX Biosciences, Inc. | $MBX | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Series B Preferred Stock | 16666666 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 16, 2024 | MBX Biosciences, Inc. | $MBX | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. | Not found | C | Common Stock | 403787 | $0.00 | 1,790,122.0000 | 0 | 29.13% | 0.00% |