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

CIK 0001903360

10% Owner

Filings

Latest May 1, 2026

Issuers covered

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6 of 6

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Track record

Realized signed returns on open-market buys and sales

No scored trades yet for Wellington Biomedical Innovation Master Investors (Cayman) II L.P.. Track record appears once open-market purchases or sales reach the +30 day horizon.

Issuers

Companies where Wellington Biomedical Innovation Master Investors (Cayman) II L.P. has filed

Ticker	Issuer	Filings	Last filed
AVLN	Avalyn Pharma Inc.	1	May 1, 2026
CRGX	Cargo Therapeutics, Inc.	1	Nov 16, 2023
MBX	Mbx Biosciences, Inc.	1	Sep 17, 2024
MTSR	Metsera, Inc.	1	Feb 3, 2025
RYZB	Rayzebio, Inc.	1	Sep 19, 2023
UPB	Upstream Bio, Inc.	1	Oct 15, 2024

All filings

6 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
May 1, 2026	AVLNAvalyn Pharma Inc.	CConversion	1,275,486	-	-
Feb 3, 2025	MTSRMetsera, Inc.	CConversion	1,857,699	-	-
Oct 15, 2024	UPBUpstream Bio, Inc.	CConversion	894,733	-	-
Sep 17, 2024	MBXMbx Biosciences, Inc.	CConversion	1,386,335	-	-
Nov 16, 2023	CRGXCargo Therapeutics, Inc.	CConversion	737,000	-	-
Sep 19, 2023	RYZBRayzebio, Inc.	CConversion	1,557,846	-	-

Showing 1-6 of 6

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Real-time Form 4 intelligence. Smarter insider tracking.

Filed		Top transaction	Shares	Price	Value