ZBIO NASDAQ
Zenas BioPharma, Inc.
1W: +5.0%
1M: -1.1%
3M: -23.3%
YTD: -42.5%
1Y: +72.8%
$18.97
-0.87 (-4.39%)
Weekly Expected Move ±11.6%
$14
$16
$18
$20
$23
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🏦 Institutional Activity
Latest: Q1 2026170
Institutions Holding
+36 vs prior
106.1%
Ownership
-69.97%
44
New
49
Increased
56
Reduced
43
Closed
👔 Insider Trades
25 records| Date | Name | Title | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-18 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 60,000 | $16.88 | $1.0M | Filing |
| 2026-04-29 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 35,000 | $17.62 | $617K | Filing |
| 2026-04-28 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 25,000 | $18.02 | $450K | Filing |
| 2026-03-31 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 34,000 | $19.31 | $657K | Filing |
| 2026-03-31 | Lu Hongbo | director | P-Purchase | 75,000 | $20.00 | $1.5M | Filing |
| 2026-03-30 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 20,000 | $18.23 | $365K | Filing |
| 2026-02-13 | Allen Patricia L | director | P-Purchase | 4,160 | $26.36 | $110K | Filing |
| 2026-02-12 | Allen Patricia L | director | P-Purchase | 5,000 | $26.50 | $132K | Filing |
| 2026-02-12 | Allen Patricia L | director | P-Purchase | 5,700 | $24.34 | $139K | Filing |
| 2026-02-11 | Lu Hongbo | director | P-Purchase | 25,985 | $22.50 | $585K | Filing |
| 2026-02-02 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 57,000 | $17.96 | $1.0M | Filing |
| 2026-01-09 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 20,000 | $16.55 | $331K | Filing |
| 2026-01-08 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 30,000 | $16.30 | $489K | Filing |
| 2026-01-07 | MOULDER LEON O JR | officer: chief executive officer | P-Purchase | 50,000 | $16.38 | $819K | Filing |
| 2025-10-09 | George Simeon | 10% owner | P-Purchase | 63,157 | $19.00 | $1.2M | Filing |
| 2025-10-09 | Nunn Jason Raleigh | director | P-Purchase | 63,158 | $19.00 | $1.2M | Filing |
| 2025-10-09 | SR ONE CAPITAL MANAGEMENT, LLC | 10% owner | P-Purchase | 63,157 | $19.00 | $1.2M | Filing |
| 2025-10-09 | George Simeon | 10% owner | P-Purchase | 63,158 | $19.00 | $1.2M | Filing |
| 2025-10-09 | SR ONE CAPITAL MANAGEMENT, LLC | 10% owner | P-Purchase | 63,158 | $19.00 | $1.2M | Filing |
| 2025-10-09 | ENRIGHT PATRICK G | director | P-Purchase | 11,990 | $20.85 | $250K | Filing |
| 2025-10-09 | ENRIGHT PATRICK G | director | P-Purchase | 105,265 | $19.00 | $2.0M | Filing |
| 2025-10-07 | Lu Hongbo | director | P-Purchase | 263,160 | $19.00 | $5.0M | Filing |
| 2025-10-07 | Fairmount Funds Management LLC | director | P-Purchase | 316,219 | $19.00 | $6.0M | Filing |
| 2025-10-07 | Kiselak Tomas | director | P-Purchase | 316,219 | $19.00 | $6.0M | Filing |
| 2025-10-07 | Fairmount Healthcare Fund II L.P. | director | P-Purchase | 316,219 | $19.00 | $6.0M | Filing |
🏛️ Congressional Trades
0 records| Date | Politician | Chamber | Type | Amount | Filing |
|---|---|---|---|---|---|
| No congressional trades found | |||||
🏦 Top Institutional Holders
20 holders| Holder | Shares | Value | Date Reported | Filing | |
|---|---|---|---|---|---|
| FMR LLC | 9,082,000 | $178M | +1,377,745 | 2026-03-31 | Filing |
| SR One Capital Management, LP | 5,037,854 | $98M | — | 2026-03-31 | Filing |
| NEA Management Company, LLC | 4,023,219 | $79M | +500,000 | 2026-03-31 | Filing |
| ENAVATE SCIENCES GP, LLC | 3,919,159 | $77M | — | 2026-03-31 | Filing |
| Polar Capital Holdings Plc | 2,548,444 | $50M | +1,490,835 | 2026-03-31 | Filing |
| Capital International Investors | 2,434,000 | $48M | +2,434,000 | 2026-03-31 | Filing |
| Fairmount Funds Management LLC | 2,359,025 | $46M | +150,000 | 2026-03-31 | Filing |
| BlackRock, Inc. | 2,037,548 | $40M | +270,030 | 2026-03-31 | Filing |
| STATE STREET CORP | 1,470,923 | $29M | +1,032,629 | 2026-03-31 | Filing |
| WELLINGTON MANAGEMENT GROUP LLP | 1,246,053 | $24M | +390,719 | 2026-03-31 | Filing |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,245,391 | $24M | +1,245,391 | 2026-03-31 | Filing |
| SILVERARC CAPITAL MANAGEMENT, LLC | 1,135,935 | $22M | +1,135,935 | 2026-03-31 | Filing |
| EcoR1 Capital, LLC | 789,500 | $15M | — | 2026-03-31 | Filing |
| Balyasny Asset Management L.P. | 667,070 | $13M | +473,917 | 2026-03-31 | Filing |
| GEODE CAPITAL MANAGEMENT, LLC | 655,785 | $13M | +67,392 | 2026-03-31 | Filing |
| Pivotal bioVenture Partners Investment A | 591,991 | $12M | — | 2026-03-31 | Filing |
| Woodline Partners LP | 590,525 | $12M | +590,525 | 2026-03-31 | Filing |
| Rock Springs Capital Management LP | 502,077 | $10M | — | 2026-03-31 | Filing |
| NEXTBio Capital Management LP | 426,736 | $8M | +104,753 | 2026-03-31 | Filing |
| BANK OF AMERICA CORP /DE | 388,347 | $8M | +341,187 | 2026-03-31 | Filing |