Vault-13

PROMIS NEUROSCIENCES INC PMN

COM SHS · Common Stock · CUSIP 74346M505

27 institutional holders +2 vs Q1 2026
6,402,4606.4m shares reported held*
$84.3mreported value*
4 new 6 added 6 reduced 2 sold out net bought ≈ $3.4m (+259.2k 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 ≈ $13.16.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0102030Q4 25: 9Q1 26: 25Q2 26: 2727Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q4 20259
Q1 202625
Q2 202627

Buyers vs sellers

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

Bought or addedCut or sold out
40040Q1 26: 21 bought or addedQ1 26: 5 cut or sold outQ1 26Q2 26: 10 bought or addedQ2 26: 8 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q1 2026215
Q2 2026108

Biggest buyers

Ally Bridge Group (NY) LLC Added +206,100+206.1k
AMERIPRISE FINANCIAL INC New +185,700+185.7k
Ikarian Capital, LLC Added +150,000+150.0k
Woodline Partners LP Added +46,616+46.6k
BOOTHBAY FUND MANAGEMENT, LLC Added +46,035+46.0k
ADAGE CAPITAL PARTNERS GP, L.L.C. Added +25,000+25.0k
BANK OF MONTREAL /CAN/ New +11,371+11.4k
MORGAN STANLEY New +7,559+7.6k
683 Capital Management, LLC Added +2,150+2.1k
Caitong International Asset Management Co., Ltd New +3+3

Biggest sellers

GREAT POINT PARTNERS LLC Reduced -285,252-285.3k
Empery Asset Management, LP Sold out -60,353-60.4k
HEIGHTS CAPITAL MANAGEMENT, INC Sold out -50,660-50.7k
MILLENNIUM MANAGEMENT LLC Reduced -21,876-21.9k
ADAR1 Capital Management, LLC Reduced -2,500-2.5k
UBS Group AG Reduced -609-609
ROYAL BANK OF CANADA Reduced -50-50
Steward Partners Investment Advisory, LLC Reduced -6-6

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
ABG Management Ltd. 13D · may seek influence filed 2026-02-05
Stated purposeItem 4 is amended and supplemented by the following: CLOSING OF OFFERING On February 3, 2026, the previously disclosed Offering closed. REGISTRATION RIGHTS AGREEMENT On February 3, 2026, in connection with the closing of the Offering, the Issuer entered into a registration rights agreement (the "2026 Registration Rights Agreement") with the investors in the Offering, pursuant to which the Issuer is required to prepare and file a registration statement with the Securities and Exchange Commission covering the resale of the Common Shares issued to the investors pursuant to the Securities Purchase Agreement, together with the Common Shares underlying the Warrants. The foregoing description of the 2026 Registration Rights Agreement does not purport to be complete and is qualified in its en… Full filing
17.0% 1.6m≈ $21.6m 2026-02-05
JANUS HENDERSON GROUP PLC 13G · institution new · filed 2026-04-07 14.4% new 1.3m≈ $17.0m 2026-04-07
Deep Track Capital, LP 13G · passive investor new · filed 2026-02-06 10.0% new 902.6k≈ $11.9m 2026-02-06
Trails Edge Capital Partners, LP 13G · passive investor new · filed 2026-02-10 9.9% new 933.5k≈ $12.3m 2026-02-10
WELLINGTON MANAGEMENT GROUP LLP 13G · institution -2.2 pts · filed 2026-08-13 7.8% -2.2 pts 696.4k≈ $9.2m 2026-08-13
Wellington Biomedical Innovation Master Investors (Cayman) I 13G · passive investor -2.2 pts · filed 2026-08-13 7.8% -2.2 pts 696.4k≈ $9.2m 2026-08-13
GREAT POINT PARTNERS LLC 13G · passive investor -2.3 pts · filed 2026-08-14 7.7% -2.3 pts 736.9k≈ $9.7m 2026-08-14

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: 1 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: 3 buyingQ1 26: 0 sellingQ1 26Q2 26: 1 buyingQ2 26: 0 sellingQ3 26: 1 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20251$14.6k0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20263$8.7m0——
Q2 20261$45.3k0——
Q3 20261$30.3k0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-05 Kaplan Johanne Chief Development Officer Bought 2,280 $13.30 $30.3k2.3k shares +58%
2026-04-22 Kirwin Patrick D. Director · By Patrick D. Kirwin Professional Corp Bought 4,000 $11.33 $45.3k4.0k shares +613%

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 Jupiter Topco LLC 0.01% of their portfolio NEW YORK, NY 1,292,7571.3m $17.0m $17.0m 0.01% First filing
2 Deep Track Capital, LP 0.16% of their portfolio GREENWICH, CT 835,655835.7k $11.0m $11.0m 0.16% Unchanged
3 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 696,378696.4k $9.2m $9.2m 0.00% Unchanged
4 Ally Bridge Group (NY) LLC 10.52% of their portfolio NEW YORK, NY 620,319620.3k $8.2m $8.2m 10.52% Added +206.1k +206,100
5 Trails Edge Capital Partners, LP 1.16% of their portfolio ATLANTA, GA 557,103557.1k $7.3m $7.3m 1.16% Unchanged
6 Woodline Partners LP 0.02% of their portfolio San Francisco, CA 441,911441.9k $5.8m $5.8m 0.02% Added +46.6k +46,616
7 Yu Fan 4.02% of their portfolio CENTRAL, HONG KONG, K3 329,760329.8k $4.3m $4.3m 4.02% Unchanged
8 SPHERA FUNDS MANAGEMENT LTD. 0.61% of their portfolio TEL AVIV, L3 325,591325.6k $4.3m $4.3m 0.61% Unchanged
9 Squadron Capital Management LLC 1.46% of their portfolio OAK BROOK, IL 324,977325.0k $4.3m $4.3m 1.46% Unchanged
10 Ikarian Capital, LLC 0.44% of their portfolio DALLAS, TX 205,000205.0k $2.7m $2.7m 0.44% Added +150.0k +150,000
11 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 185,700185.7k $2.4m $2.4m 0.00% New
12 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio Boston, MA 164,275164.3k $2.2m $2.2m 0.00% Added +25.0k +25,000
13 683 Capital Management, LLC 0.11% of their portfolio NEW YORK, NY 95,00095.0k $1.3m $1.3m 0.11% Added +2.1k +2,150
14 ADAR1 Capital Management, LLC 0.06% of their portfolio AUSTIN, TX 92,85092.8k $1.2m $1.2m 0.06% Reduced -2.5k -2,500
15 GREAT POINT PARTNERS LLC 0.27% of their portfolio Greenwich, CT 86,15086.2k $1.1m $1.1m 0.27% Reduced -285.3k -285,252
16 BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio NEW YORK, NY 62,07862.1k $816.9k $816.9k 0.02% Added +46.0k +46,035
17 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 56,04556.0k $737.6k $737.6k 0.00% Reduced -21.9k -21,876
18 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 11,37111.4k $149.6k $149.6k 0.00% New
19 Seven Fleet Capital Management LP 0.02% of their portfolio MOUNTAIN VIEW, CA 10,60010.6k $139.5k $139.5k 0.02% Unchanged
20 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 7,5597.6k $99.5k $99.5k 0.00% New
21 UBS Group AG 0.00% of their portfolio ZURICH, V8 691691 $9.1k $9.1k 0.00% Reduced -609 -609
22 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 360360 $4.7k $4.7k 0.00% Unchanged
23 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 218218 $3.0k $3.0k 0.00% Reduced -50 -50
24 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 9494 $1.2k $1.2k 0.00% Reduced -6 -6
25 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 1010 $131 $131 0.00% Unchanged
26 TD Waterhouse Canada Inc. 0.00% of their portfolio TORONTO, A6 55 $66 $66 0.00% Unchanged
27 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 33 $39 $39 0.00% New