Longitude Capital Partners IV, LLC - Oct 9, 2025 SCHEDULE 13D/A Report for ZENAS BIOPHARMA, INC. Common Stock, $0.0001 par value per share (ZBIO)

Filing Manager
Longitude Capital Partners IV, LLC
Reporting Manager
Patrick G. Enright
Security
ZENAS BIOPHARMA, INC. Common Stock, $0.0001 par value per share
Symbol
ZBIO
Shares outstanding
53.7M shares
Disclosed Ownership
2.63M shares
Ownership
4.9%
Form type
SCHEDULE 13D/A
Date filed
10/14/2025, 09:35 AM
Date of event
Oct 9, 2025
SEC
View on sec.gov

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Longitude Capital Partners IV, LLC 3.4% 1.83M 0 1.83M /s/ Cristiana Blauth Oliveira Cristiana Blauth Oliveira, Authorized Signatory 0001829169
Longitude Venture Partners IV, L.P. 3.4% 1.83M 0 1.83M By Longitude Capital Partners IV, LLC, General Partner, /s/ Cristiana Blauth Oliveira Cristiana Blauth Oliveira, Authorized Signatory 0001787456
Longitude Prime Partners, LLC 1.4% 775K 0 775K /s/ Cristiana Blauth Oliveira Cristiana Blauth Oliveira, Authorized Signatory 0001865779
Longitude Prime Fund, L.P. 1.4% 775K 0 775K By Longitude Prime Partners, LLC, General Partner, /s/ Cristiana Blauth Oliveira Cristiana Blauth Oliveira, Authorized Signatory 0001865844
Patrick G. Enright 4.9% 2.63M 24.3K 2.61M /s/ Cristiana Blauth Oliveira, as attorney-in-fact for Patrick G. Enright Cristiana Blauth Oliveira, as attorney-in-fact for Patrick G. Enright 0001253886
Juliet Tammenoms Bakker 4.9% 2.61M 0 2.61M /s/ Cristiana Blauth Oliveira, as attorney-in-fact for Juliet Tammenoms Bakker Cristiana Blauth Oliveira, as attorney-in-fact for Juliet Tammenoms Bakker 0001431159