SEC Insider Transactions from Wellington Biomedical Innovation Master Investors (Cayman) I L.P..

Last updated: 2026-03-14 10:42 UTC | Total transactions: 13

Wellington Biomedical Innovation Master Investors (Cayman) I L.P. has filed 13 insider transactions across 3 companies since April 2024.

Most recent transaction: a transaction of 200718 shares of Zenas BioPharma, Inc. ($ZBIO) on September 16, 2024.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Sept. 16, 2024 Zenas BioPharma, Inc. $ZBIO Wellington Biomedical Innovation Master Investors (Cayman) I L.P. TenPercentOwner C Common Stock 200718 $0.00 801,624.0000 1,567,269 33.40% 12.81%
Sept. 16, 2024 Zenas BioPharma, Inc. $ZBIO Wellington Biomedical Innovation Master Investors (Cayman) I L.P. TenPercentOwner C Common Stock 180635 $0.00 180,635.0000 1,567,269 9999.99% 11.53%
Sept. 16, 2024 Zenas BioPharma, Inc. $ZBIO Wellington Biomedical Innovation Master Investors (Cayman) I L.P. TenPercentOwner C Common Stock 420271 $0.00 600,906.0000 1,567,269 232.66% 26.82%
Sept. 16, 2024 Zenas BioPharma, Inc. $ZBIO Wellington Biomedical Innovation Master Investors (Cayman) I L.P. TenPercentOwner C Series A Convertible Preferred Stock 1568480 $0.00 0.0000 1,567,269 100.00% 100.00%
Sept. 16, 2024 Zenas BioPharma, Inc. $ZBIO Wellington Biomedical Innovation Master Investors (Cayman) I L.P. TenPercentOwner C Series C Convertible Preferred Stock 1742858 $0.00 0.0000 1,567,269 100.00% 100.00%
Sept. 16, 2024 Zenas BioPharma, Inc. $ZBIO Wellington Biomedical Innovation Master Investors (Cayman) I L.P. TenPercentOwner C Series B Convertible Preferred Stock 3649263 $0.00 0.0000 1,567,269 100.00% 100.00%
July 22, 2024 Artiva Biotherapeutics, Inc. $ARTV Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found C Series B Preferred Stock 145089 $0.00 0.0000 0 100.00% 0.00%
July 22, 2024 Artiva Biotherapeutics, Inc. $ARTV Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found C Common Stock 145089 $0.00 145,089.0000 0 9999.99% 0.00%
July 22, 2024 Artiva Biotherapeutics, Inc. $ARTV Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found J Common Stock 49019 $10.20 194,108.0000 0 33.79% 0.00%
April 2, 2024 Boundless Bio, Inc. $BOLD Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found C Common Stock 189933 $0.00 189,933.0000 1,248 9999.99% 100.00%
April 2, 2024 Boundless Bio, Inc. $BOLD Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found C Series C Preferred Stock 7142857 $0.00 0.0000 1,248 100.00% 100.00%
April 2, 2024 Boundless Bio, Inc. $BOLD Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found C Series B Preferred Stock 3703704 $0.00 0.0000 1,248 100.00% 100.00%
April 2, 2024 Boundless Bio, Inc. $BOLD Wellington Biomedical Innovation Master Investors (Cayman) I L.P. Not found C Common Stock 366300 $0.00 556,233.0000 1,248 192.86% 100.00%