Ticker · CUSIP 98937L105

ZBIO

ZENAS BIOPHARMA INC
···Share
Holders (tracked)
11
Combined shares
1,827,221
Combined value
$48.79M
Last close
Quarter
2025Q4
Tracked holders · last 8 quarters
+6 vs previous quarter over the last 6.
1182024Q32025Q4

SEC event timeline

13 events
  1. +24,459 shares · 2025Q4
    13F
  2. −5,282 shares · 2025Q4
    13F
  3. −22,690 shares · 2025Q4
    13F
  4. +368,400 shares · 2025Q4
    13F
  5. −5,050 shares · 2025Q4
    13F
  6. −2,190 shares · 2025Q4
    13F
  7. +53,636 shares · 2025Q4
    13F
  8. +71,850 shares · 2025Q3
    13F
  9. +765 shares · 2025Q3
    13F
  10. −110,904 shares · 2025Q3
    13F
  11. −21,394 shares · 2025Q3
    13F
  12. −84 shares · 2025Q3
    13F
  13. +75,000 shares · 2024Q3
    13F

Insider activity

No insider transactions in the last 30 days.

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Added to1
Trimmed4
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2024Q3
8
$31.5M
2024Q4
6
$2.8M
2025Q1
2
$6.9M
2025Q2
5
$11.8M
2025Q3
5
$21.6M
2025Q4
11
$48.8M

Who owns ZBIO

11 super-investors · 2025Q4
Tracked stake
1.83M
shares
Combined value
$49M
% of shares outstanding
shares-out unknown
Quarter action mix
New6Added1Trim4
#ManagerSharesValue
1Wellington Management855.3K$31M
2Steve Cohen
Point72
368.4K$9M
3AQR Capital Management78.2K$3M
4Izzy Englander
Millennium Mgmt
49.2K$2M
5Ken Griffin
Citadel Advisors
24.5K$888K
6Ken Griffin
Citadel Advisors
22.1K$802K
7Steve Cohen
Point72
17.5K$635K
8Steve Cohen
Point72
17.5K$635K
9Two Sigma Investments15.1K$548K
10Ken Griffin
Citadel Advisors
10.2K$370K
11T. Rowe Price369.2K$13K

Recent moves

20 transactions
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