Wellington Management Group LLP 13D/13G Filings for Zenas BioPharma, Inc. (ZBIO)

Wellington Management Group LLP 13D and 13G filings for Zenas BioPharma, Inc.:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Shares have been adjusted for stock splits.
Time period
Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-09-08
07:39 am
Purchase
2026-08-3113GZENAS BIOPHARMA INC
ZBIO
Wellington Management Group LLP6,566,134
10.100%
6,566,134increase
(New Position)
Filing