Form SCHEDULE 13D - General Statement of Acquisition of Beneficial Ownership:
SEC Accession No. 0001104659-26-055643
Filing Date
2026-05-05
Accepted
2026-05-05 16:15:19
Documents
2
X0202

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13D  
1 primary_doc.xml SCHEDULE 13D 27600
2 EXHIBIT 1 tm2613598d1_ex1.htm EX-1 4435
  Complete submission text file 0001104659-26-055643.txt   33591
Mailing Address C/O TESARO, INC. 1000 WINTER STREET, SUITE 3300 WALTHAM MA 02451
Business Address
MOULDER LEON O JR (Filed by) CIK: 0001228865 (see all company filings)

Type: SCHEDULE 13D

Mailing Address 852 WINTER STREET, SUITE 250 WALTHAM MA 02451
Business Address 852 WINTER STREET, SUITE 250 WALTHAM MA 02451 857-271-2954
Zenas BioPharma, Inc. (Subject) CIK: 0001953926 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13D | Act: 34 | File No.: 005-94625 | Film No.: 26943370
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)