Vault-13

ZURA BIO LTD ZURA

CLASS A ORD SHS · Common Stock · CUSIP G9TY5A101

65 institutional holders -9 vs Q1 2025
35,263,57135.3m shares reported held*
54.2% of all shares outstanding*
$37.0mreported value*
19 new 14 added 19 reduced 30 sold out net sold ≈ $10.9m (-10.4m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($55.3k this quarter). Holder counts are more reliable. Shares outstanding: 65.0m as of 2025-08-04, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.05. Options: 1 managers hold calls ($0 notional), 1 hold puts ($0).

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

050100Q1 23: 3Q2 23: 39Q3 23: 42Q4 23: 45Q1 24: 46Q2 24: 58Q3 24: 78Q4 24: 88Q1 25: 74Q2 25: 6565Q1 23Q3 23Q1 24Q3 24Q1 25Q2 25
Numbers
QuarterHolders
Q1 20233
Q2 202339
Q3 202342
Q4 202345
Q1 202446
Q2 202458
Q3 202478
Q4 202488
Q1 202574
Q2 202565

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 23: 28 bought or addedQ3 23: 9 cut or sold outQ4 23: 34 bought or addedQ4 23: 9 cut or sold outQ4 23Q1 24: 19 bought or addedQ1 24: 24 cut or sold outQ2 24: 36 bought or addedQ2 24: 16 cut or sold outQ2 24Q3 24: 53 bought or addedQ3 24: 13 cut or sold outQ4 24: 51 bought or addedQ4 24: 24 cut or sold outQ4 24Q1 25: 29 bought or addedQ1 25: 38 cut or sold outQ2 25: 33 bought or addedQ2 25: 49 cut or sold outQ2 25
Numbers
QuarterBought or addedCut or sold out
Q3 2023289
Q4 2023349
Q1 20241924
Q2 20243616
Q3 20245313
Q4 20245124
Q1 20252938
Q2 20253349

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5mQ3 24 calls: $1.2mQ3 24 puts: $1.1mQ3 24P/C 0.91Q4 24 calls: $522.0kQ4 24 puts: $290.5kQ4 24P/C 0.56Q1 25 calls: $258Q1 25 puts: $15.5kQ1 25P/C 60.00Q2 25 calls: $0Q2 25 puts: $0Q2 25P/C —
Numbers
QuarterCallsPutsP/C
Q3 2024$1.2m$1.1m0.91
Q4 2024$522.0k$290.5k0.56
Q1 2025$258$15.5k60.00
Q2 2025$0$0—

Biggest buyers

JPMORGAN CHASE & CO Added +2,052,732+2.1m
FMR LLC Added +566,479+566.5k
MILLENNIUM MANAGEMENT LLC Added +485,736+485.7k
GOLDMAN SACHS GROUP INC Added +179,715+179.7k
MORGAN STANLEY Added +165,291+165.3k
TWO SIGMA INVESTMENTS, LP Added +150,870+150.9k
Alberta Investment Management Corp New +133,200+133.2k
RBF Capital, LLC New +120,000+120.0k
Y-Intercept (Hong Kong) Ltd New +107,881+107.9k
JANE STREET GROUP, LLC New +107,712+107.7k

Biggest sellers

RA CAPITAL MANAGEMENT, L.P. Sold out -3,217,503-3.2m
Allostery Investments LP Sold out -2,329,384-2.3m
BlackRock, Inc. Reduced -2,143,625-2.1m
ADAR1 Capital Management, LLC Reduced -1,803,637-1.8m
Deep Track Capital, LP Reduced -1,556,221-1.6m
GEODE CAPITAL MANAGEMENT, LLC Reduced -585,780-585.8k
Woodline Partners LP Sold out -520,276-520.3k
SPHERA FUNDS MANAGEMENT LTD. Sold out -421,229-421.2k
Venrock Adviser, LLC Reduced -391,950-391.9k
STATE STREET CORP Reduced -377,929-377.9k

Biggest calls

Biggest puts

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
AI Biotechnology LLC 13D · may seek influence -1.7 pts · filed 2026-03-02 18.2% -1.7 pts 19.7m≈ $113.2m 2026-03-02
Athanor Capital 13D · may seek influence no change · filed 2026-01-27
Stated purposeThe securities reported herein were acquired by the Reporting Persons for investment purposes in the ordinary course of business. The Reporting Persons acquired the securities without the purpose or effect of changing or influencing the control of the Issuer and do not have any present plans or proposals that relate to or would result in any of the actions described in Items 4(a) through 4(j) of Schedule 13D. The Reporting Persons may, from time to time, review their investment in the Issuer and may engage in discussions with management or the board of directors of the Issuer regarding the Issuer's business, operations and prospects, subject to applicable law. The Reporting Persons reserve the right to determine in the future whether to change the purpose or purposes described above or wh… Full filing
15.7% no change 11.6m≈ $68.3m 2026-01-27
Venrock Healthcare Capital Partners III, L.P. 13G · passive investor no change · filed 2026-05-15 9.9% no change 9.8m≈ $57.9m 2026-05-15
SUVRETTA CAPITAL MANAGEMENT, LLC 13G · passive investor +1.3 pts · filed 2026-05-12 9.9% +1.3 pts 9.5m≈ $56.2m 2026-05-12

Fell to 5% or below in the last year: GREAT POINT PARTNERS LLC (4.4%, 2026-05-15), JPMORGAN CHASE & CO (4.7%, 2026-05-06), Deep Track Capital, LP (0.4%, 2025-11-14)

Insider purchases and sales in Q2 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
202Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 1 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 1 buyingQ2 24: 0 sellingQ2 24Q3 24: 0 buyingQ3 24: 2 sellingQ4 24: 0 buyingQ4 24: 1 sellingQ4 24Q1 25: 0 buyingQ1 25: 0 sellingQ2 25: 0 buyingQ2 25: 0 sellingQ2 25
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20230—0——
Q4 20230—1$8.0m—
Q1 20240—0——
Q2 20241$496.0k0——
Q3 20240—2$10.5m—
Q4 20240—1$2.7m—
Q1 20250—0——
Q2 20250—0——

None reported in Q2 2025.

Holders, Q2 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MONTANOVA CAPITAL, LLC 0.19% of their portfolio New York, NY 4,860,9394.9m $5.1m $5.1m 0.19% Unchanged
2 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 4,659,9514.7m $4.9m $4.9m 0.00% Added +2.1m +2,052,732
3 Venrock Adviser, LLC 0.36% of their portfolio NEW YORK, NY 4,631,2164.6m $4.9m $4.9m 0.36% Reduced -391.9k -391,950
4 GREAT POINT PARTNERS LLC 2.16% of their portfolio Greenwich, CT 3,170,1943.2m $3.3m $3.3m 2.16% Unchanged
5 Pfizer Inc 0.54% of their portfolio New York, NY 2,970,0223.0m $3.1m $3.1m 0.54% Unchanged
6 BRAIDWELL LP 0.09% of their portfolio STAMFORD, CT 2,472,8062.5m $2.6m $2.6m 0.09% Unchanged
7 Point72 Asset Management, L.P. 0.01% of their portfolio STAMFORD, CT 2,350,0002.4m $2.5m $2.5m 0.01% Unchanged
8 Deep Track Capital, LP 0.06% of their portfolio GREENWICH, CT 1,727,5621.7m $1.8m $1.8m 0.06% Reduced -1.6m -1,556,221
9 ARMISTICE CAPITAL, LLC 0.06% of their portfolio NEW YORK, NY 1,536,0001.5m $1.6m $1.6m 0.06% Unchanged
10 ADAR1 Capital Management, LLC 0.17% of their portfolio AUSTIN, TX 997,547997.5k $1.0m $1.0m 0.17% Reduced -1.8m -1,803,637
11 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 789,309789.3k $828.8k $828.8k 0.00% Added +485.7k +485,736
12 BlackRock, Inc. 0.00% of their portfolio New York, NY 578,127578.1k $607.0k $607.0k 0.00% Reduced -2.1m -2,143,625
13 FMR LLC 0.00% of their portfolio BOSTON, MA 569,139569.1k $597.6k $597.6k 0.00% Added +566.5k +566,479
14 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 517,144517.1k $543.0k $543.0k 0.00% Reduced -325.0k -325,014
15 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 407,236407.2k $427.7k $427.7k 0.00% Reduced -585.8k -585,780
16 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 302,691302.7k $317.8k $317.8k 0.00% Added +179.7k +179,715
17 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 249,200249.2k $261.7k $261.7k 0.00% Added +165.3k +165,291
18 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 244,925244.9k $257.2k $257.2k 0.00% Added +150.9k +150,870
19 Affinity Asset Advisors, LLC 0.03% of their portfolio NEW YORK, NY 223,335223.3k $234.5k $234.5k 0.03% Unchanged
20 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 204,133204.1k $214.3k $214.3k 0.00% Reduced -218.1k -218,090
21 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 169,180169.2k $177.6k $177.6k 0.00% Reduced -119.4k -119,421
22 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 156,291156.3k $164.1k $164.1k 0.00% Added +100.6k +100,589
23 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 144,363144.4k $151.6k $151.6k 0.00% Reduced -377.9k -377,929
24 Alberta Investment Management Corp 0.00% of their portfolio EDMONTON, A0 133,200133.2k $139.9k $139.9k 0.00% New
25 RBF Capital, LLC 0.01% of their portfolio RENO, NV 120,000120.0k $126.0k $126.0k 0.01% New
26 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 118,228118.2k $124.1k $124.1k 0.00% Added +53.2k +53,186
27 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 114,191114.2k $119.9k $119.9k 0.00% Reduced -30.5k -30,494
28 Y-Intercept (Hong Kong) Ltd 0.00% of their portfolio HONG KONG, K3 107,881107.9k $113.3k $113.3k 0.00% New
29 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 107,712107.7k $113.1k $113.1k 0.00% New
30 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 100,100100.1k $105.1k $105.1k 0.00% Added +13.2k +13,200
31 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 94,16194.2k $98.9k $98.9k 0.00% Reduced -275.2k -275,197
32 Forefront Analytics, LLC 0.08% of their portfolio WEST CONSHOHOCKEN, PA 63,98564.0k $67.2k $67.2k 0.08% Reduced -44.3k -44,323
33 Jain Global LLC 0.00% of their portfolio NEW YORK, NY 48,75048.8k $51.2k $51.2k 0.00% New
34 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 44,86244.9k $46.0k $46.0k 0.00% New
35 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 32,19532.2k $33.0k $33.0k 0.00% New
36 UBS Group AG 0.00% of their portfolio ZURICH, V8 31,21131.2k $32.8k $32.8k 0.00% Reduced -27.6k -27,642
37 Point72 Asia (Singapore) Pte. Ltd. 0.01% of their portfolio SINGAPORE, U0 30,55330.6k $32.1k $32.1k 0.01% New
38 Catalyst Funds Management Pty Ltd 0.01% of their portfolio SYDNEY NSW, C3 23,30023.3k $24.5k $24.5k 0.01% New
39 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 22,02922.0k $23.1k $23.1k 0.00% Added +14.2k +14,181
40 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 21,50421.5k $22.6k $22.6k 0.00% New
41 Rangeley Capital, LLC 0.03% of their portfolio NEW CANAAN, CT 21,00021.0k $22.1k $22.1k 0.03% New
42 Mariner, LLC 0.00% of their portfolio Overland Park, KS 16,38316.4k $17.2k $17.2k 0.00% New
43 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 15,56015.6k $16.3k $16.3k 0.00% Added +6.3k +6,319
44 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 15,15815.2k $15.8k $15.8k 0.00% New
45 CIBC WORLD MARKET INC. 0.00% of their portfolio TORONTO, A6 15,00015.0k $15.8k $15.8k 0.00% New
46 IEQ CAPITAL, LLC 0.00% of their portfolio Foster City, CA 13,84113.8k $14.5k $14.5k 0.00% New
47 Abel Hall, LLC 0.01% of their portfolio BATON ROUGE, LA 13,34313.3k $14.0k $14.0k 0.01% New
48 Ground Swell Capital, LLC 0.02% of their portfolio FOLLY BEACH, SC 13,30813.3k $14.0k $14.0k 0.02% New
49 R Squared Ltd 0.01% of their portfolio HONG KONG, K3 10,20110.2k $10.7k $10.7k 0.01% Not comparable
50 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 9,9489.9k $10.4k $10.4k 0.00% Reduced -18.8k -18,846
51 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 9,1799.2k $9.6k $9.6k 0.00% Reduced -26.8k -26,789
52 CWM, LLC 0.00% of their portfolio OMAHA, NE 6,9737.0k $7.0k $7.0k 0.00% Added +3.5k +3,530
53 MAI Capital Management 0.00% of their portfolio INDEPENDENCE, OH 4,0004.0k $4.2k $4.2k 0.00% Unchanged
54 CLEAR STREET LLC 0.00% of their portfolio NEW YORK, NY 1,6811.7k $1.8k $1.8k 0.00% Unchanged
55 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 1,3691.4k $1.4k $1.4k 0.00% Unchanged
56 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 1,2061.2k $1.3k $1.3k 0.00% Added +522 +522
57 Point72 (DIFC) Ltd 0.00% of their portfolio DUBAI, C0 601601 $631 $631 0.00% New
58 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 554554 $0 $0 0.00% Reduced -91 -91
59 Essential Partners LLC 0.00% of their portfolio RANCHO SANTA FE, CA 510510 $536 $536 0.00% First filing
60 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 385385 $404 $404 0.00% Reduced -23.7k -23,732
61 True Wealth Design, LLC 0.00% of their portfolio AKRON, OH 382382 $402 $402 0.00% Added +287 +287
62 Clearstead Advisors, LLC 0.00% of their portfolio CLEVELAND, OH 239239 $251 $251 0.00% New
63 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 234234 $246 $246 0.00% Reduced -558 -558
64 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 22 $2 $2 0.00% Reduced -55.8k -55,757
65 CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio BIRMINGHAM, AL 00 $0 $0 — Unchanged