InsiderTrades

Wellington Biomedical Innovation Master Investors (Cayman) II L.P.

SEC CIK 1903360 · EDGAR

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
AVLNAvalyn Pharma Inc.10% 1.28M — — 12026-05-012026-05-01
UPBUpstream Bio, Inc.10% 894.7K — — 12024-10-152024-10-15
MBXMBX Biosciences, Inc.10% 1.79M — — 12024-09-162024-09-16

Most active insiders at AVLN, 12 months

#InsiderTitleBoughtSold
1 SR ONE CAPITAL MANAGEMENT, LLC10% $10.00M—
2 Novo Holdings A/S10% $10.00M—
3 Carroll JillDir $5.00M—
4 Wellington Biomedical Innovation Master Investors (Cayman) II L.P.10% ——
5 FMR LLC10%, See Remark 1 ——

Transactions 3

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
D 2026-05-01 18:26 2026-05-01 AVLN Avalyn Pharma Inc. Wellington Biomedical Innovation Master Investors (Cayman) II L.P. 10% C - Cnv Deriv — +1.28M 1.28M New —
D 2024-10-15 2024-10-15 UPB Upstream Bio, Inc. Wellington Biomedical Innovation Master Investors (Cayman) II L.P. 10% C - Cnv Deriv — +894.7K 894.7K New —
DM 2024-09-17 2024-09-16 MBX MBX Biosciences, Inc. Wellington Biomedical Innovation Master Investors (Cayman) II L.P. 10% C - Cnv Deriv — +1.79M 1.79M New —

Purchase Sale Sale after option exercise All abbreviations