PROMIS NEUROSCIENCES INC PMN
COM SHS · Common Stock · CUSIP 74346M505
- SectorHealth care
- IndustryPharmaceutical Preparations
- FilingsSEC EDGAR
* 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
Numbers
| Quarter | Holders |
|---|---|
| Q4 2025 | 9 |
| Q1 2026 | 25 |
| Q2 2026 | 27 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2026 | 21 | 5 |
| Q2 2026 | 10 | 8 |
Biggest buyers
| Ally Bridge Group (NY) LLC | Added | +206.1k |
| AMERIPRISE FINANCIAL INC | New | +185.7k |
| Ikarian Capital, LLC | Added | +150.0k |
| Woodline Partners LP | Added | +46.6k |
| BOOTHBAY FUND MANAGEMENT, LLC | Added | +46.0k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Added | +25.0k |
| BANK OF MONTREAL /CAN/ | New | +11.4k |
| MORGAN STANLEY | New | +7.6k |
| 683 Capital Management, LLC | Added | +2.1k |
| Caitong International Asset Management Co., Ltd | New | +3 |
Biggest sellers
| GREAT POINT PARTNERS LLC | Reduced | -285.3k |
| Empery Asset Management, LP | Sold out | -60.4k |
| HEIGHTS CAPITAL MANAGEMENT, INC | Sold out | -50.7k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -21.9k |
| ADAR1 Capital Management, LLC | Reduced | -2.5k |
| UBS Group AG | Reduced | -609 |
| ROYAL BANK OF CANADA | Reduced | -50 |
| Steward Partners Investment Advisory, LLC | Reduced | -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.
| Holder | Stake |
|---|---|
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% |
| JANUS HENDERSON GROUP PLC 13G · institution new · filed 2026-04-07 | 14.4% |
| Deep Track Capital, LP 13G · passive investor new · filed 2026-02-06 | 10.0% |
| Trails Edge Capital Partners, LP 13G · passive investor new · filed 2026-02-10 | 9.9% |
| WELLINGTON MANAGEMENT GROUP LLP 13G · institution -2.2 pts · filed 2026-08-13 | 7.8% |
| Wellington Biomedical Innovation Master Investors (Cayman) I 13G · passive investor -2.2 pts · filed 2026-08-13 | 7.8% |
| GREAT POINT PARTNERS LLC 13G · passive investor -2.3 pts · filed 2026-08-14 | 7.7% |
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 1 | $14.6k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 3 | $8.7m | 0 | — | — |
| Q2 2026 | 1 | $45.3k | 0 | — | — |
| Q3 2026 | 1 | $30.3k | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-05 | Kaplan Johanne Chief Development Officer | Bought | $30.3k2.3k shares |
| 2026-04-22 | Kirwin Patrick D. Director · By Patrick D. Kirwin Professional Corp | Bought | $45.3k4.0k shares |
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
| Manager | Shares | Change |
|---|---|---|
| Jupiter Topco LLC 0.01% of their portfolio | 1.3m $17.0m | First filing |
| Deep Track Capital, LP 0.16% of their portfolio | 835.7k $11.0m | Unchanged |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 696.4k $9.2m | Unchanged |
| Ally Bridge Group (NY) LLC 10.52% of their portfolio | 620.3k $8.2m | Added +206.1k |
| Trails Edge Capital Partners, LP 1.16% of their portfolio | 557.1k $7.3m | Unchanged |
| Woodline Partners LP 0.02% of their portfolio | 441.9k $5.8m | Added +46.6k |
| Yu Fan 4.02% of their portfolio | 329.8k $4.3m | Unchanged |
| SPHERA FUNDS MANAGEMENT LTD. 0.61% of their portfolio | 325.6k $4.3m | Unchanged |
| Squadron Capital Management LLC 1.46% of their portfolio | 325.0k $4.3m | Unchanged |
| Ikarian Capital, LLC 0.44% of their portfolio | 205.0k $2.7m | Added +150.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 185.7k $2.4m | New |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio | 164.3k $2.2m | Added +25.0k |
| 683 Capital Management, LLC 0.11% of their portfolio | 95.0k $1.3m | Added +2.1k |
| ADAR1 Capital Management, LLC 0.06% of their portfolio | 92.8k $1.2m | Reduced -2.5k |
| GREAT POINT PARTNERS LLC 0.27% of their portfolio | 86.2k $1.1m | Reduced -285.3k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio | 62.1k $816.9k | Added +46.0k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 56.0k $737.6k | Reduced -21.9k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 11.4k $149.6k | New |
| Seven Fleet Capital Management LP 0.02% of their portfolio | 10.6k $139.5k | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 7.6k $99.5k | New |
| UBS Group AG 0.00% of their portfolio | 691 $9.1k | Reduced -609 |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 360 $4.7k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 218 $3.0k | Reduced -50 |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 94 $1.2k | Reduced -6 |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 10 $131 | Unchanged |
| TD Waterhouse Canada Inc. 0.00% of their portfolio | 5 $66 | Unchanged |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 3 $39 | New |