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Ally Bridge group details 11.3% ProMIS (PMN) stake and joins $75M deal

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

ProMIS Neurosciences Inc. large shareholder Ally Bridge–related entities report beneficial ownership of 6,070,405 common shares, representing 11.3% of the company’s common shares. The shares are held with shared voting and dispositive power across ABG Management Ltd., Ally Bridge Group (NY) LLC, Ally Bridge MedAlpha Master Fund L.P. and Fan Yu.

The filing also describes a January 29, 2026 Securities Purchase Agreement under which Ally Bridge purchasers agreed to buy 700,741 common shares at $12.13 per share and receive warrants for 700,741 additional shares with a $14.40 exercise price, exercisable immediately. The warrants expire on the earlier of 60 days after a PMN310 topline data Milestone Event or February 3, 2031, with the final closing of a broader approximately $75 million offering expected on February 3, 2026. The reporting persons state they acquired their holdings for investment and may consider additional transactions or strategic actions involving ProMIS.

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Insights

Large biotech specialist holder reaffirms 11.3% stake and joins $75M financing.

The filing shows Ally Bridge–affiliated entities jointly holding 6,070,405 common shares, or 11.3% of ProMIS Neurosciences. Voting and dispositive power are shared, suggesting coordinated decision-making across ABG Management Ltd., Ally Bridge Group (NY) LLC, Ally Bridge MedAlpha Master Fund L.P. and Fan Yu.

They also committed capital under a January 29, 2026 Securities Purchase Agreement within a roughly $75 million offering. Their allocation is 700,741 common shares at $12.13 plus warrants for 700,741 shares at $14.40, exercisable immediately and expiring on the earlier of February 3, 2031 or 60 days after a PMN310 topline data Milestone Event.

The purpose section outlines that the reporting persons may evaluate a wide range of potential corporate actions, including mergers, asset sales, capitalization changes or board and management changes. Actual outcomes will depend on future company performance, PMN310 data disclosures and ongoing assessments by this investor group.






If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D






SCHEDULE 13D




Comment for Type of Reporting Person:
Limited Liability Company


SCHEDULE 13D






SCHEDULE 13D






SCHEDULE 13D


ABG Management Ltd.
Signature:/s/ Fan Yu
Name/Title:Fan Yu, Director
Date:02/02/2026
Ally Bridge Group (NY) LLC
Signature:ABG Management Ltd., its managing member, By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:02/02/2026
Ally Bridge MedAlpha Master Fund L.P.
Signature:Ally Bridge Group (NY) LLC, its manager, By: ABG Management Ltd., its managing member, By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:02/02/2026
Fan Yu
Signature:/s/ Fan Yu
Name/Title:Fan Yu
Date:02/02/2026

FAQ

How much of ProMIS Neurosciences (PMN) does the Ally Bridge group own?

Ally Bridge–related entities report beneficial ownership of 6,070,405 ProMIS common shares, equal to 11.3% of the class. Voting and dispositive power over these shares is shared among ABG Management Ltd., Ally Bridge Group (NY) LLC, Ally Bridge MedAlpha Master Fund L.P. and Fan Yu.

What is the January 2026 Securities Purchase Agreement involving ProMIS (PMN)?

On January 29, 2026, Ally Bridge purchasers and other investors signed a Securities Purchase Agreement with ProMIS for an approximately $75 million offering. Under this deal, Ally Bridge purchasers agreed to buy common shares and warrants directly from the company, with final closing expected on February 3, 2026.

What securities are Ally Bridge purchasers buying in the ProMIS (PMN) deal?

Ally Bridge purchasers agreed to acquire 700,741 ProMIS common shares and warrants to purchase 700,741 additional common shares. The common shares are priced at $12.13 each, and the warrants have a $14.40 exercise price and are exercisable immediately after issuance under the agreement.

When do the ProMIS (PMN) warrants held by Ally Bridge expire?

The ProMIS common share warrants issued to Ally Bridge purchasers expire on the earlier of February 3, 2031 or within 60 days after a defined Milestone Event. That Milestone Event is the company’s public release of topline data from single ascending dose PMN310 cohorts via press release or Form 8-K.

What is the Milestone Event referenced in the ProMIS (PMN) warrant terms?

The Milestone Event is defined as ProMIS publicly announcing topline data from cohorts treated with single ascending doses of PMN310. This must occur through a press release or a Current Report on Form 8-K, and it directly affects how long the Ally Bridge warrants remain exercisable.

What future actions do the reporting persons contemplate regarding ProMIS (PMN)?

The reporting persons say they acquired their ProMIS securities for investment and will continually review their position. They may buy or sell shares and may explore extraordinary transactions, including mergers, asset deals, capitalization changes, or changes to management and the board, depending on future developments.
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