Vault-13

I MAB NBP

SPONSORED ADS · ADR · CUSIP 44975P103 · ISIN US44975P1030

49 institutional holders +1 vs Q1 2026
24,673,24224.7m shares reported held*
$48.1mreported value*
13 new 13 added 11 reduced 11 sold out net bought ≈ $2.7m (+1.4m 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. Holder counts are more reliable. Implied quarter-end price ≈ $1.95. Options: 2 managers hold calls ($68.4k notional), 0 hold puts (—).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 76Q4 22: 69Q1 23: 54Q2 23: 49Q3 23: 48Q4 23: 45Q1 24: 40Q2 24: 39Q3 24: 29Q4 24: 29Q1 25: 30Q2 25: 33Q3 25: 42Q4 25: 57Q1 26: 48Q2 26: 4949Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202276
Q4 202269
Q1 202354
Q2 202349
Q3 202348
Q4 202345
Q1 202440
Q2 202439
Q3 202429
Q4 202429
Q1 202530
Q2 202533
Q3 202542
Q4 202557
Q1 202648
Q2 202649

Buyers vs sellers

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

Bought or addedCut or sold out
40040Q3 24: 8 bought or addedQ3 24: 19 cut or sold outQ4 24: 8 bought or addedQ4 24: 13 cut or sold outQ4 24Q1 25: 9 bought or addedQ1 25: 8 cut or sold outQ2 25: 15 bought or addedQ2 25: 15 cut or sold outQ2 25Q3 25: 31 bought or addedQ3 25: 17 cut or sold outQ4 25: 35 bought or addedQ4 25: 17 cut or sold outQ4 25Q1 26: 23 bought or addedQ1 26: 33 cut or sold outQ2 26: 26 bought or addedQ2 26: 22 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 2024819
Q4 2024813
Q1 202598
Q2 20251515
Q3 20253117
Q4 20253517
Q1 20262333
Q2 20262622

Calls vs puts

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

CallsPuts
$0$100k$200k$300k$400kQ3 25 calls: $291.8kQ3 25 puts: $219.8kQ3 25P/C 0.75Q4 25 calls: $277.0kQ4 25 puts: $359.0kQ4 25P/C 1.30Q1 26 calls: $98.4kQ1 26 puts: $738Q1 26P/C 0.01Q2 26 calls: $68.4kQ2 26 puts: $0Q2 26P/C 0.00
Numbers
QuarterCallsPutsP/C
Q3 2025$291.8k$219.8k0.75
Q4 2025$277.0k$359.0k1.30
Q1 2026$98.4k$7380.01
Q2 2026$68.4k$00.00

Biggest buyers

MARSHALL WACE, LLP New +1,231,946+1.2m
TWO SIGMA INVESTMENTS, LP New +851,348+851.3k
AIHC Capital Management Ltd Added +615,100+615.1k
E Fund Management Co., Ltd. New +589,020+589.0k
RENAISSANCE TECHNOLOGIES LLC Added +485,814+485.8k
CITADEL ADVISORS LLC Added +456,215+456.2k
UBS Group AG Added +238,239+238.2k
ALPS ADVISORS INC New +117,096+117.1k
Headlands Technologies LLC New +65,183+65.2k
BlackRock, Inc. Added +58,712+58.7k

Biggest sellers

Point72 Asset Management, L.P. Sold out -1,389,403-1.4m
Siren, L.L.C. Reduced -995,261-995.3k
Woodline Partners LP Reduced -350,000-350.0k
MORGAN STANLEY Reduced -184,970-185.0k
HRT FINANCIAL LP Sold out -107,524-107.5k
XTX Topco Ltd Sold out -101,509-101.5k
AXQ CAPITAL, LP Sold out -83,330-83.3k
DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. Sold out -80,400-80.4k
Leonteq Securities AG Sold out -80,000-80.0k
BNP PARIBAS FINANCIAL MARKETS Reduced -44,266-44.3k

Biggest calls

CITADEL ADVISORS LLC New $67.7k34.7k shares
SIMPLEX TRADING, LLC Reduced $780400 shares

Biggest puts

None

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
Everest Medicines Ltd 13D · may seek influence new · filed 2025-08-05
Stated purposeThe information set forth in or incorporated by reference in Item 3 of this Schedule 13D is incorporated by reference in its entirety into this Item 4. The Reporting Person purchased the aforementioned securities for investment purposes with the aim of increasing the value of its investments and the Issuer. Subject to applicable legal requirements, the Reporting Person may purchase additional securities of the Issuer from time to time in open market or private transactions, depending on its evaluation of the Issuer's business, prospects and financial condition, the market for the Issuer's securities, other developments concerning the Issuer, the reaction of the Issuer to the Reporting Person's ownership of the Issuer's securities, other opportunities available to the Reporting Person, and… Full filing
16.1% new 42.5m 2025-08-05
CBC Investment I-Mab Ltd 13D · may seek influence +1.1 pts · filed 2026-02-03 11.5% +1.1 pts 30.5m 2026-02-03

Insider purchases and sales since 1 Apr 2026

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
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 1 buyingQ2 26: 3 sellingQ3 26: 0 buyingQ3 26: 3 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20261$577.3k3$62.0k—
Q3 20260—3$92.3k—
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-18 Dennis Phillip Andrew Chief Medical Officer Sold 8,209 $0.71 $5.8k8.2k shares -4%
2026-09-09 Cao Sean Wuxiong Chief Bus. Development Officer Sold 107,978 $0.74 $79.9k108.0k shares -29%
2026-08-31 Xu Cong Claire EVP, Clinical Development Sold 3,282 $0.79 $2.6k3.3k shares -1%
2026-07-06 Xu Cong Claire SVP, Clinical Development Sold 4,485 $0.89 $4.0k4.5k shares -2%
2026-06-18 Dennis Phillip Andrew Chief Medical Officer Sold 8,494 $0.66 $5.6k8.5k shares -5%
2026-06-01 Xu Cong Claire SVP, Clinical Development Sold 3,494 $3.94 $13.8k3.5k shares -1%
2026-05-14 Cao Sean Wuxiong Officer, director Sold 21,399 $1.99 $42.6k21.4k shares -38%
2026-04-24 Hagler Mark Arnold Officer Bought 230,000 $2.51 $577.3k230.0k shares new

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 HHLR ADVISORS, LTD. 1.40% of their portfolio GRAND CAYMAN, E9 5,980,5686.0m $11.7m $11.7m 1.40% Unchanged
2 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 3,653,2283.7m $7.1m $7.1m 0.00% Reduced -185.0k -184,970
3 AIHC Capital Management Ltd 5.38% of their portfolio CENTRAL, K3 2,878,0332.9m $5.6m $5.6m 5.38% Added +615.1k +615,100
4 Siren, L.L.C. 0.08% of their portfolio New York, NY 2,004,7392.0m $3.9m $3.9m 0.08% Reduced -995.3k -995,261
5 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 1,231,9461.2m $2.4m $2.4m 0.00% New
6 Candriam S.C.A. 0.01% of their portfolio STRASSEN, N4 1,132,5631.1m $2.2m $2.2m 0.01% Unchanged
7 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio Boston, MA 1,000,0001.0m $1.9m $1.9m 0.00% Unchanged
8 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 851,348851.3k $1.7m $1.7m 0.00% New
9 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 758,226758.2k $1.5m $1.5m 0.00% Added +485.8k +485,814
10 BlackRock, Inc. 0.00% of their portfolio New York, NY 686,208686.2k $1.3m $1.3m 0.00% Added +58.7k +58,712
11 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 622,831622.8k $1.2m $1.2m 0.00% Added +456.2k +456,215
12 E Fund Management Co., Ltd. 0.03% of their portfolio GUANGZHOU, F4 589,020589.0k $1.1m $1.1m 0.03% New
13 Exome Asset Management LLC 0.69% of their portfolio NEW YORK, NY 576,960577.0k $1.1m $1.1m 0.69% Unchanged
14 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 360,376360.4k $702.7k $702.7k 0.00% Reduced -9.7k -9,731
15 Woodline Partners LP 0.00% of their portfolio San Francisco, CA 350,000350.0k $682.5k $682.5k 0.00% Reduced -350.0k -350,000
16 Fiera Capital Corp 0.00% of their portfolio MONTREAL, A8 315,681315.7k $615.6k $615.6k 0.00% Unchanged
17 UBS Group AG 0.00% of their portfolio ZURICH, V8 301,780301.8k $588.5k $588.5k 0.00% Added +238.2k +238,239
18 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 279,019279.0k $544.1k $544.1k 0.00% Reduced -20.3k -20,280
19 Taikang Asset Management (Hong Kong) Co Ltd 0.03% of their portfolio HONG KONG, K3 170,931170.9k $333.3k $333.3k 0.03% Unchanged
20 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 161,321161.3k $314.6k $314.6k 0.00% Added +48.9k +48,858
21 ALPS ADVISORS INC 0.00% of their portfolio Denver, CO 117,096117.1k $228.3k $228.3k 0.00% New
22 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 116,341116.3k $226.9k $226.9k 0.00% Reduced -30.0k -29,981
23 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 81,55681.6k $161.5k $161.5k 0.00% Added +24.1k +24,067
24 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 68,84968.8k $134.3k $134.3k 0.00% Unchanged
25 Headlands Technologies LLC 0.01% of their portfolio CHICAGO, IL 65,18365.2k $127.1k $127.1k 0.01% New
26 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 62,88562.9k $122.6k $122.6k 0.00% Added +34.7k +34,724
27 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 38,19838.2k $74.0k $74.0k 0.00% New
28 Caitong International Asset Management Co., Ltd 0.01% of their portfolio HONG KONG, K3 30,28130.3k $59.0k $59.0k 0.01% Added +4.3k +4,299
29 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 28,83628.8k $56.2k $56.2k 0.00% Reduced -44.3k -44,266
30 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 28,53928.5k $55.7k $55.7k 0.00% Added +15.7k +15,722
31 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 26,46826.5k $51.6k $51.6k 0.00% Added +2.7k +2,661
32 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 18,34318.3k $35.8k $35.8k 0.00% New
33 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 17,86417.9k $34.8k $34.8k 0.00% Reduced -2.1k -2,055
34 TWO SIGMA SECURITIES, LLC 0.00% of their portfolio NEW YORK, NY 15,64115.6k $30.5k $30.5k 0.00% New
35 Aigen Investment Management, LP 0.01% of their portfolio NEW YORK, NY 11,42611.4k $22.3k $22.3k 0.01% New
36 Bronte Capital Management Pty Ltd. 0.00% of their portfolio Bondi Junction, C3 11,19211.2k $21.8k $21.8k 0.00% New
37 Freestone Capital Holdings, LLC 0.00% of their portfolio Seattle, WA 10,00010.0k $19.5k $19.5k 0.00% Unchanged
38 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 5,0205.0k $9.8k $9.8k 0.00% Reduced -835 -835
39 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 4,3264.3k $8.4k $8.4k 0.00% Added +1.1k +1,085
40 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 2,6902.7k $5.2k $5.2k 0.00% Reduced -497 -497
41 GF FUND MANAGEMENT CO. LTD. 0.00% of their portfolio GUANGZHOU, F4 2,3772.4k $4.6k $4.6k 0.00% Added +56 +56
42 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 2,0002.0k $3.9k $3.9k 0.00% Unchanged
43 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 1,9672.0k $3.8k $3.8k 0.00% New
44 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 1,1041.1k $1.8k $1.8k 0.00% Unchanged
45 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 143143 $279 $279 0.00% New
46 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 7575 $146 $146 0.00% Reduced -150 -150
47 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 3333 $64 $64 0.00% Unchanged
48 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 3030 $58 $58 0.00% New
49 Eurizon Capital SGR S.p.A. 0.00% of their portfolio MILAN, L6 11 $2 $2 0.00% Unchanged