Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2023 to Q4 2025

Type / Class
Equity / Class A Ordinary Shares, par value $0.0001 per share
Symbol
ZURA on Nasdaq
Shares outstanding
73,766,892
Price per share
$5.24
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
41,145,976
Total reported value
$178,160,287
% of total 13F portfolios
0%
Share change
+5,803,272
Value change
+$26,671,383
Number of holders
66
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
AI Biotechnology LLC 20% $20,629,570 14,326,090 AI Biotechnology LLC 21 May 2025
Athanor Capital 16% $46,209,794 11,581,402 Athanor Capital 29 Dec 2025
Venrock Healthcare Capital Partners III, L.P. 9.9% 0% $8,322,892 -$888,073 6,353,353 -9.6% Venrock Healthcare Capital Partners III, L.P. 30 Jun 2025
JPMORGAN CHASE & CO 7.5% $5,653,623 4,672,416 JPMORGAN CHASE & CO. 30 Jun 2025
GREAT POINT PARTNERS LLC 5.9% +15% $16,522,977 +$2,796,037 3,815,930 +20% Great Point Partners, LLC 30 Sep 2025
RA CAPITAL MANAGEMENT, L.P. 4.9% $4,633,204 3,217,503 RA Capital Management, L.P. 31 Dec 2024
PFIZER INC 4.6% $4,276,832 2,970,022 Pfizer Inc. 13-5315170 31 Dec 2024
ADAR1 Capital Management, LLC 3.2% $2,991,241 2,077,251 ADAR1 Capital Management, LLC 31 Dec 2024
Deep Track Capital, LP 0.4% -96% $1,121,531 -$18,867,975 259,014 -94% Deep Track Capital, LP 30 Sep 2025

As of 30 Sep 2025, 66 institutional investors reported holding 41,145,976 shares of Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA). This represents 56% of the company’s total 73,766,892 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA) together control 53% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
SUVRETTA CAPITAL MANAGEMENT, LLC 7.4% 5,472,891 +13% 0.72% $23,697,618
VR ADVISER, LLC 6.3% 4,631,216 0% 1.1% $20,053,165
JPMORGAN CHASE & CO 6.3% 4,624,199 -0.77% 0% $20,022,782
GREAT POINT PARTNERS LLC 5.2% 3,815,930 +20% 6.9% $16,522,977
ADAGE CAPITAL PARTNERS GP, L.L.C. 4.1% 3,045,444 0.02% $13,186,773
Pfizer Inc 4% 2,970,022 0% 2.9% $12,860,195
BRAIDWELL LP 3.4% 2,472,806 0% 0.32% $10,707,250
Ikarian Capital, LLC 2.9% 2,132,322 2.1% $9,232,953
ARMISTICE CAPITAL, LLC 2.1% 1,560,000 +1.6% 0.21% $6,754,800
Affinity Asset Advisors, LLC 1.7% 1,274,351 +471% 0.51% $5,517,940
BOOTHBAY FUND MANAGEMENT, LLC 1.1% 824,078 0.09% $3,568,258
Point72 Asset Management, L.P. 0.98% 726,328 -69% 0.01% $3,145,000
SILVERARC CAPITAL MANAGEMENT, LLC 0.98% 720,452 0.45% $3,119,557
ADAR1 Capital Management, LLC 0.88% 652,154 -35% 0.28% $2,823,827
MILLENNIUM MANAGEMENT LLC 0.8% 589,700 -25% 0% $2,553,401
FMR LLC 0.72% 531,286 -6.7% 0% $2,300,468
VANGUARD GROUP INC 0.7% 517,144 0% 0% $2,239,234
AMERIPRISE FINANCIAL INC 0.68% 500,000 0% $2,165,000
GEODE CAPITAL MANAGEMENT, LLC 0.55% 405,304 -0.47% 0% $1,755,635
BlackRock, Inc. 0.5% 365,674 -37% 0% $1,583,368
UBS Group AG 0.41% 305,329 +878% 0% $1,322,075
Atika Capital Management LLC 0.37% 276,000 0.1% $1,195,080
Deep Track Capital, LP 0.35% 259,014 -85% 0.03% $1,121,531
RENAISSANCE TECHNOLOGIES LLC 0.35% 255,400 +25% 0% $1,105,882
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.34% 247,747 +110% 0% $1,072,745

Institutional Holders of Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 702 $3,678 -$2,979 $5.24 1
2025 Q3 41,145,976 $178,160,287 +$26,671,383 $4.33 66
2025 Q2 35,347,572 $37,112,793 -$12,588,212 $1.05 62
2025 Q1 45,725,666 $58,985,346 +$1,915,127 $1.29 74
2024 Q4 42,890,401 $107,244,382 -$472,426 $2.50 87
2024 Q3 37,204,097 $151,039,161 +$13,196,426 $4.06 77
2024 Q2 32,818,331 $114,851,034 +$63,732,200 $3.50 55
2024 Q1 14,795,561 $37,551,435 -$1,318,315 $2.57 43
2023 Q4 15,148,165 $70,695,884 +$2,995,975 $4.67 43
2023 Q3 14,140,309 $93,326,247 +$8,351,323 $6.60 41
2023 Q2 12,843,918 $105,028,129 +$104,999,517 $8.20 38
2023 Q1 25,742 $24,692 +$24,692 $10.00 3