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$ZBIO All transactions

Zenas BioPharma, Inc.

▲ BUY
9 / 10

Conviction

$ Value

$3.0M

Shares

150,000

Price

$20

Filed

Apr 1

Why this score? (9/10)
  • Open market buy (+3)
  • Trade value >= $1.0M (+2)
  • Director (+1)
  • Cluster: 3 insiders buying (+2)
  • Not a 10b5-1 plan (+1)

Insider

Name

Fairmount Funds Management LLC

Title

CIK

0001802528

Roles

Director

Transaction Details

Transaction Date

2026-03-31

Code

P

Table

Non-Derivative

Ownership

Indirect

Equity Swap

No

Shares After

2,359,025

Footnotes

Fairmount Funds Management LLC ("Fairmount") is the investment manager for Fairmount Healthcare Fund II L.P. The managers of Fairmount are Peter Harwin and Tomas Kiselak. Fairmount, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.

Filing Info

Accession No.

0001104659-26-038546

Form Type

4

Issuer CIK

0001953926

Fairmount Funds Management LLC's History

Date Ticker Type Value
2026-03-31 COGT C
2026-03-31 COGT $242.6M
2026-03-31 COGT C $0
2026-03-31 ZBIO $3.0M
2026-03-23 DMRA A $0
2025-12-04 CBIO $18.2M
2025-12-04 CBIO $1.8M
2025-10-23 VRDN $10.0M
2025-10-07 ZBIO $6.0M
2025-10-06 JBIO A $12.2M

Other Insiders at ZBIO (90d)

Insider Bought Sold Last
Lu Hongbo $1.6M 2026-03-31
MOULDER LEON O JR
Chief Executive Officer
$1.0M 2026-03-31