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ISSUER PROFILE · CIK 0001953926 · CUSIP 98937L105

Zenas BioPharma, Inc.ZBIO

1 13D/G filings 1 distinct filers 24 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d
avg —
Median 60d
avg —
Median 90d
avg —
Median 180d
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Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
1
1 SCHEDULE
Distinct filers
1
single filer
Insiders (365d)
24
24 buys · 0 sales
Latest short DTC
18.13
as of 2026-05-29

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $10.48M
Point72 Asset Mgmt

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2025-10-14 SCHEDULE Enavate Sciences GP, LLC 7.30% 3,919,159 view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-04-29 MOULDER LEON O JR director, officer Buy 35,000 $17.62 $617K
2026-04-28 MOULDER LEON O JR director, officer Buy 25,000 $18.02 $451K
2026-03-31 Lu Hongbo director Buy 3,768 $18.63 $70K
2026-03-31 Fairmount Funds Management LLC director Buy 150,000 $20.00 $3.00M
2026-03-31 Lu Hongbo director Buy 75,000 $20.00 $1.50M
2026-03-31 MOULDER LEON O JR director, officer Buy 34,000 $19.31 $657K
2026-03-30 MOULDER LEON O JR director, officer Buy 20,000 $18.23 $365K
2026-02-13 Allen Patricia L director Buy 4,160 $26.36 $110K
2026-02-12 Allen Patricia L director Buy 5,000 $23.77 $119K
2026-02-12 Allen Patricia L director Buy 5,700 $24.34 $139K
2026-02-12 Allen Patricia L director Buy 5,000 $26.50 $133K
2026-02-11 Lu Hongbo director Buy 25,985 $22.50 $585K
2026-02-02 MOULDER LEON O JR director, officer Buy 57,000 $17.96 $1.02M
2026-01-09 MOULDER LEON O JR director, officer Buy 20,000 $16.55 $331K
2026-01-08 MOULDER LEON O JR director, officer Buy 30,000 $16.30 $489K
2026-01-07 MOULDER LEON O JR director, officer Buy 50,000 $16.38 $819K
2025-10-09 Nunn Jason Raleigh director Buy 63,158 $19.00 $1.20M
2025-10-09 SR ONE CAPITAL MANAGEMENT, LLC 10%+ Buy 63,158 $19.00 $1.20M
2025-10-09 ENRIGHT PATRICK G director Buy 105,265 $19.00 $2.00M
2025-10-09 ENRIGHT PATRICK G director Buy 11,990 $20.85 $250K
2025-10-09 SR ONE CAPITAL MANAGEMENT, LLC 10%+ Buy 63,157 $19.00 $1.20M
2025-10-07 MOULDER LEON O JR director, officer Buy 36,928 $20.85 $770K
2025-10-07 Fairmount Funds Management LLC director Buy 316,219 $19.00 $6.01M
2025-10-07 Lu Hongbo director Buy 263,160 $19.00 $5.00M

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 10,879,470 18.13 +1.8%
2026-05-15 10,687,286 21.31 -1.5%
2026-04-30 10,853,674 23.97 +6.2%
2026-04-15 10,223,630 12.37 +9.2%
2026-03-31 9,362,107 7.48 +21.4%
2026-03-13 7,709,823 22.25 -3.9%
2026-02-27 8,023,712 10.70 +2.9%
2026-02-13 7,801,280 8.41 +18.8%
2026-01-30 6,568,745 11.32 +7.9%
2026-01-15 6,086,840 3.01 +27.4%
2025-12-31 4,779,373 11.90 -3.5%
2025-12-15 4,950,866 17.31 +1.9%

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