Zura Bio Limited
Zura Bio Limited (ZURA) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ZURA · as of Sep 30, 2025
Ownership Breakdown
71
Institutional Holders
▲ 8 vs Q2
$178.16M
Total Inst. Value
▲ $141.05M vs Q2
65.02M
Shares Outstanding
freeFloat 55.59%
41.15M
13F Shares Held
▲ 5.80M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ZURA largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
SUVRETTA CAPITAL MANAGEMENT, LLC biological products, (no diagnostic substances) | 5.47M | 5.80% | 5.80% | $23.70B | Nov 14, 2025 | ▲ 612.0K |
VR ADVISER, LLC biological products, (no diagnostic substances) | 4.63M | 4.91% | 4.91% | $20.05B | Nov 14, 2025 | — held |
JPMORGAN CHASE & CO biological products, (no diagnostic substances) | 4.62M | 4.90% | 4.90% | $20.02B | Nov 26, 2025 | ▼ 35.8K |
GREAT POINT PARTNERS LLC biological products, (no diagnostic substances) | 3.82M | 4.05% | 4.05% | $16.52B | Nov 14, 2025 | ▲ 645.7K |
ADAGE CAPITAL PARTNERS GP, L.L.C. biological products, (no diagnostic substances) | 3.05M | 3.23% | 3.23% | $13.19B | Nov 14, 2025 | NEW |
PFIZER INC biological products, (no diagnostic substances) | 2.97M | 3.15% | 3.15% | $12.86B | Nov 13, 2025 | — held |
BRAIDWELL LP biological products, (no diagnostic substances) | 2.47M | 2.62% | 2.62% | $10.71B | Nov 14, 2025 | — held |
IKARIAN CAPITAL, LLC biological products, (no diagnostic substances) | 2.13M | 2.26% | 2.26% | $9.23B | Nov 14, 2025 | NEW |
ARMISTICE CAPITAL, LLC biological products, (no diagnostic substances) | 1.56M | 1.65% | 1.65% | $6.75B | Nov 17, 2025 | ▲ 24.0K |
AFFINITY ASSET ADVISORS, LLC biological products, (no diagnostic substances) | 1.27M | 1.35% | 1.35% | $5.52B | Nov 13, 2025 | ▲ 1.05M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
15
Increased
+3.08M shares12
New Positions
first time holders17
Decreased
−4.55M shares0
Sold Out
fully exitedNet shares change (top 50)
1.47M
+3.08M / −4.55M
Net new holders
+10
12 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ZURA insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
5
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Whale Gary Chief Technology Officer | Apr 1, 2026 | Award | 263,000 | $6.03 | $1.59M | 263.0K | Form 4 ↗ |
Nistala Kiran See Remarks | Apr 1, 2026 | Award | 340,900 | $6.03 | $2.06M | 340.9K | Form 4 ↗ |
Hyllengren Eric J Chief Financial Officer | Apr 1, 2026 | Award | 340,900 | $6.03 | $2.06M | 340.9K | Form 4 ↗ |
Davis Kim Chief Legal Officer | Apr 1, 2026 | Award | 425,700 | $6.03 | $2.57M | 425.7K | Form 4 ↗ |
Kulkarni Sandeep Chidambar Chief Executive Officer | Apr 1, 2026 | Award | 894,000 | $6.03 | $5.39M | 894.0K | Form 4 ↗ |
Nirula Ajay director | Feb 21, 2026 | Award | 37,812 | $6.53 | $246.9K | 37.8K | Form 4 ↗ |
AI Biotechnology LLC 10 percent owner | Feb 26, 2026 | Purchase | 2,000,000 | $6.25 | $12.50M | 6.55M | Form 4 ↗ |
Eisner Mark director | Feb 21, 2026 | Award | 37,812 | $6.53 | $246.9K | 37.8K | Form 4 ↗ |
Thiara Parvinder director | Jan 23, 2026 | Award | 38,823 | $6.36 | $246.9K | 38.8K | Form 4 ↗ |
Kulkarni Sandeep Chidambar Chief Executive Officer | Jan 21, 2026 | Award | 2,934,107 | $6.32 | $18.54M | 2.93M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Zura Bio Limited (ZURA) is primarily owned by institutional investors, who hold approximately 63.3% of total shares outstanding. Company insiders own approximately 44.41%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Zura Bio Limited is SUVRETTA CAPITAL MANAGEMENT, LLC, holding approximately 5.47 million shares — equal to 5.80% of outstanding shares — as of September 30, 2025.
A total of 71 institutional investors currently hold ZURA stock, with a combined institutional value of approximately $178,160,287 as of the most recent 13F filing period.
Frequently asked questions
ZURA ownershipZura Bio Limited (ZURA) is primarily owned by institutional investors, who hold approximately 63.3% of shares. The largest shareholder is SUVRETTA CAPITAL MANAGEMENT, LLC with a 5.80% stake. Company insiders hold 44.41%. Data sourced from SEC Form 13F as of September 30, 2025.