Zenas BioPharma, Inc. (ZBIO) Institutional Ownership & Insider Trading
145 institutions reported holding Zenas BioPharma, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 25 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
ZBIOZenas BioPharma, Inc.Follow ZBIO — free
—
Price chart with a free account
- Market cap
- 1.8B
- P/E TTM
- —
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 18 Nov, in 25 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters145 institutions held 94.0% of the shares. Across filers that reported both quarters, shares held changed +6.3%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 145 | 61 | +6.3% | 59 | 24 | 35 | 20 |
| Mar 26 | 139 | 55 | +34.0% | 56 | 44 | 16 | 26 |
| Dec 25 | 117 | 42 | +18.6% | 36 | 40 | 22 | 7 |
| Sep 25 | 78 | 35 | +2.1% | 22 | 13 | 19 | 7 |
| Jun 25 | 72 | 34 | +4.8% | 32 | 10 | 10 | 4 |
| Mar 25 | 67 | 32 | +2.7% | 13 | 12 | 19 | 8 |
| Dec 24 | 64 | 32 | +13.6% | 13 | 29 | 6 | 13 |
| Sep 24 | 43 | 25 | — | — | — | — | — |
Zenas BioPharma, Inc. — questions
- Who owns Zenas BioPharma, Inc. stock?
- 145 institutions reported Zenas BioPharma, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: FMR LLC (14.6%), SR One Capital Management, LP (7.7%), NEA Management Company, LLC (6.2%).
- Are Zenas BioPharma, Inc. insiders buying or selling?
- 25 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Zenas BioPharma, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.