ProMIS Neurosciences Inc. reports that the Reporting Persons' beneficial ownership has decreased to 181,632 Common Shares, representing 2.0% of the class based on 8,967,693 Common Shares outstanding as of March 25, 2026. The filing (Amendment No. 5) attributes these holdings to Michael S. Gordon and Title 19 Promis and describes prior private placements, warrant exercises and conversions—including exercised July 2024 warrants and currently exercisable July 2025 warrants—that underlie the reported position.
Positive
None.
Negative
None.
Key Figures
Beneficial ownership:181,632 sharesPercent of class:2.0%Shares outstanding:8,967,693 shares+3 more
6 metrics
Beneficial ownership181,632 sharesreported for each of Michael S. Gordon and Title 19 Promis
Percent of class2.0%based on 8,967,693 shares outstanding as of March 25, 2026
Shares outstanding8,967,693 sharesas of March 25, 2026 (used to compute ownership percentage)
July 2025 Warrants issued539,100 warrantsequals 21,564 post-2025 reverse split; currently exercisable, 5-year term
July 2024 Tranche A warrants exercised119,800 warrantsexercised to acquire 119,800 Common Shares (4,792 post-split) on July 25, 2025
Conversion Shares from Series 2500,000 Common Sharesconverted from Series 2 Preferred Shares (20,000 post-2025 reverse split)
Key Terms
Reverse Stock Split, Warrants, Series 2 Preferred Shares, Beneficial ownership
4 terms
Reverse Stock Splitfinancial
"4,256 Common Shares following the 2025 Reverse Stock Split"
A reverse stock split is when a company reduces the number of its shares outstanding, making each share more valuable. For example, if you own 100 shares worth $1 each, a 1-for-10 reverse split would turn your 100 shares into 10 shares worth $10 each. Companies often do this to boost their stock price and appear more stable to investors.
Warrantsfinancial
"539,100 warrants, each exercisable to purchase one Common Share"
Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.
Series 2 Preferred Sharesregulatory
"500,000 Series 2 Preferred Shares, each convertible into one Common Share"
Beneficial ownershipfinancial
"Amount beneficially owned: 181,632 for each of Mr. Gordon and Title 19 Promis"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 5)
ProMIS Neurosciences Inc.
(Name of Issuer)
Common Shares, No Par Value
(Title of Class of Securities)
74346M406
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
74346M406
1
Names of Reporting Persons
Michael S. Gordon
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
181,632.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
181,632.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
181,632.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
2.0 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: This Amendment No. 5 to Schedule 13G is filed jointly on behalf of Michael S. Gordon and Title 19 Promis, a series of a Delaware limited liability company ("Title 19 Promis," and collectively with Mr. Gordon, the "Reporting Persons"), pursuant to Rule 13d-1(c). Prior to the effective date of the registration of the Issuer's common shares, no par value per share ("Common Shares"), pursuant to Section 12 of the Securities Exchange Act of 1934, as amended, in July of 2022, (i) Title 19 Acies, a series of a Delaware limited liability company ("Title 19 Acies"), acquired 2,900,000 Common Shares, representing 48,333 Common Shares following a 1:60 reverse stock split (the "2022 Reverse Stock Split") of the Issuer that occurred in June 2022 and 1,933 Common Shares following a 1:25 reverse stock split (the "2025 Reverse Stock Split") of the Issuer that occurred in November 2025 and (ii) Title 19 Promis acquired (a) 12,375,000 Common Shares, representing 206,250 Common Shares following the 2022 Reverse Stock Split and 8,250 Common Shares following the 2025 Reverse Stock Split (such 8,250 Common Shares, the "August 2021 Common Shares"), (b) 3,093,750 warrants to purchase Common Shares (51,562 warrants following the 2022 Reverse Stock Split and 2,062 warrants following the 2025 Reverse Stock Split), each initially exercisable to purchase one Common Share and, as a result of the 2022 Reverse Stock Split and 2025 Reverse Stock Split, now exercisable to purchase an aggregate of 2,062 Common Shares ("March 2022 Warrant Shares") and (c) 30,000,000 Series 1 Preferred Shares ("Series 1 Preferred Shares") of the Issuer, each initially convertible into one Common Share in accordance with the terms of the Series 1 Preferred Shares and, as a result of the 2022 Reverse Stock Split, became convertible into an aggregate of 500,000 Common Shares (20,000 Common Shares following the 2025 Reverse Stock Split).
On October 11, 2022, Title 19 Promis acquired 106,391 Common Shares (4,256 Common Shares following the 2025 Reverse Stock Split) (the "October 2022 Common Shares") and 26,597 warrants (1,064 warrants following the 2025 Reverse Stock Split), each exercisable to purchase one Common Share (such 1,064 Common Shares underlying such warrants following the 2025 Reverse Stock Split, the "October 2022 Warrant Shares"), in a private placement conducted by the Issuer. On August 23, 2023, Title 19 Promis acquired 797,872 common share units, each consisting of one Common Share (such 31,915 Common Shares following the 2025 Reverse Stock Split, the "August 2023 Common Shares") and one warrant to purchase one Common Share (the "August 2023 Warrants," and such 31,915 Common Shares underlying the August 2023 Warrants following the 2025 Reverse Stock Split, the "August 2023 Warrant Shares"), in a private placement conducted by the Issuer. The August 2023 Warrants have an exercise price of $0.07 per whole warrant following the 2025 Reverse Stock Split, are currently exercisable and expire February 23, 2029.
On December 4, 2023, the Issuer entered into a Share Exchange Agreement with the holders of the Issuer's Series 1 Preferred Shares, pursuant to which the Series 1 Preferred Shares were exchanged for a new class of Series 2 convertible preferred shares (the "Series 2 Preferred Shares"), effected on a 1:60 basis to reflect the 2022 Reverse Stock Split, such that the Series 1 Preferred Shares held by Title 19 Promis were exchanged for 500,000 Series 2 Preferred Shares (the "Title 19 Series 2 Preferred Shares"), each convertible into one Common Share (20,000 Common Shares following the 2025 Reverse Stock Split) in accordance with the terms of the Series 2 Preferred Shares.
On July 31, 2024, Title 19 Promis acquired (A) 465,116 Common Shares (18,605 Common Shares following the 2025 Reverse Stock Split) (the "July 2024 Common Shares"), (B) 465,116 Tranche A Common Share purchase warrants (18,605 Tranche A Common Share purchase warrants following the 2025 Reverse Stock Split) (the "July 2024 Tranche A Warrants"), (C) 465,116 Tranche B Common Share purchase warrants (18,605 Tranche B Common Share purchase warrants following the 2025 Reverse Stock Split) (the "July 2024 Tranche B Warrants") and (D) 465,116 Tranche C Common Share purchase warrants (18,605 Tranche C Common Share purchase warrants following the 2025 Reverse Stock Split) (the "July 2024 Tranche C Warrants"), in a private placement (the "July 2024 Offering") conducted by the Issuer. Upon the closing of the July 2024 Offering, which was a cumulative qualified equity financing in excess of $14 million, the Series 2 Preferred Shares involuntarily converted into Common Shares at a 1:1 ratio, such that the Title 19 Series 2 Preferred Share converted into 500,000 Common Shares (20,000 Common Shares following the 2025 Reverse Stock Split) (the "Conversion Shares").
On September 16, 2024 and September 17, 2024, Mr. Gordon acquired an aggregate of 93,223 Common Shares (3,729 Common Shares following the 2025 Reverse Stock Split) (the "Open Market Shares") on the open market.
On March 13, 2025, the ownership of Title 19 Acies was assigned to Skye Peak Partners LLC, a Delaware limited liability company ("SPP"), effective as of January 1, 2025. In connection with such assignment, the management of Title 19 Acies changed from Mr. Gordon as sole manager to Emmett Gordon and Michael Youniss as managers, and Mr. Gordon does not otherwise have investment control over the shares of the Issuer held by SPP. Accordingly, Mr. Gordon no longer has a pecuniary interest in or beneficial ownership of shares of the Issuer held by Title 19 Acies.
On June 30, 2025, Mr. Gordon contributed the Open Market Shares of the Issuer held by Mr. Gordon to SPP in exchange for membership interests of SPP.
On July 25, 2025, Title 19 Promis:
(i) exercised 119,800 July 2024 Tranche A Warrants (4,792 Tranche A Warrants following the 2025 Reverse Stock Split), each exercisable to purchase one Common Share, and acquired 119,800 Common Shares (4,792 Common Shares following the 2025 Reverse Stock Split) (the "July 2024 Tranche A Warrant Shares");
(ii) exercised 119,800 July 2024 Tranche B Warrants (4,792 Tranche B Warrants following the 2025 Reverse Stock Split), each exercisable to purchase one Common Share, and acquired 119,800 Common Shares (4,792 Common Shares following the 2025 Reverse Stock Split) (the "July 2024 Tranche B Warrant Shares"); and
(iii) exercised 119,800 July 2024 Tranche C Warrants (4,792 Tranche C Warrants following the 2025 Reverse Stock Split), each exercisable to purchase one Common Share, and acquired 119,800 Common Shares (4,792 Common Shares following the 2025 Reverse Stock Split) (the "July 2024 Tranche C Warrant Shares").
These July 2024 Tranche A Warrants, July 2024 Tranche B Warrants and July 2024 Tranche C Warrants were exercisable at an exercise price of $2.02, $2.02 and $2.50 per warrant share, respectively ($0.08, $0.08 and $0.10 per warrant share, respectively, following the 2025 Reverse Stock Split); however, following an offer by Title 19 Promis and an acceptance by the Issuer, were exercised at an exercise price of $0.83518 per share ($0.0334072 per share following the 2025 Reverse Stock Split). The remainder of the July 2024 Tranche A Warrants expired on January 31, 2026, and the remainder of the July 2024 Tranche B Warrants and July 2024 Tranche C Warrants are currently exercisable and expire:
(a) in the case of the July 2024 Tranche B Warrants, on the earlier of (i) 30 months of the issue date and (ii) within 60 days of the public announcement via press release or the filing of a Current Report on Form 8-K of 12-month data from the cohorts treated with single ascending doses of PMN310; and
(b) in the case of the July 2024 Tranche C Warrants, on July 31, 2029.
On July 29, 2025, Title 19 Promis acquired 539,100 warrants (21,564 warrants following the 2025 Reverse Stock Split) (the "July 2025 Warrants"), each exercisable to purchase one Common Share (such 21,564 Common Shares following the 2025 Reverse Stock Split, the "July 2025 Warrant Shares"), at an exercise price of $1.25 per share ($0.05 per share following the 2025 Reverse Stock Split). The purchase price for each July 2025 Warrant was $0.1875 per share ($0.0075 per share following the 2025 Reverse Stock Split). The July 2025 Warrants are currently exercisable and expire five years after the date of issuance.
Based on the number of issued and outstanding Common Shares of the Issuer as of March 25, 2026 as set forth in the Issuer's Annual Report on Form 10-K for the fiscal year ended December 31, 2025, the beneficial ownership of the Reporting Persons has decreased by more than five percent (5%), to less than five percent (5%). Accordingly, the Reporting Persons are filing this Amendment No. 5 to Schedule 13G to report such change.
The acquisition of the July 2024 Tranche A Warrant Shares, the July 2024 Tranche B Warrant Shares and the July 2024 Tranche C Warrant Shares and the Common Shares underlying the July 2025 Warrants being deemed beneficially owned by Mr. Gordon due to the July 2025 Warrants being currently exercisable, when added to all other acquisitions of securities of the same class during the 12 months immediately preceding the date of such acquisition, aggregates to greater than two percent (2%) of the class of such securities. However, such acquisition was not done with any purpose, or with the effect, of changing or influencing the control of the Issuer, or in connection with or as a participant in any transaction having that purpose or effect. Accordingly, the Reporting Persons are filing this Amendment No. 5 to Schedule 13G pursuant to Rule 13d-1(c).
SCHEDULE 13G
CUSIP Number(s):
74346M406
1
Names of Reporting Persons
Title 19 Promis
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
181,632.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
181,632.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
181,632.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
2.0 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: See comments above.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
ProMIS Neurosciences Inc.
(b)
Address of issuer's principal executive offices:
Suite 200, 1920 Yonge Street, Toronto, Ontario, M4S 3E2, Canada
Item 2.
(a)
Name of person filing:
This statement is filed by the Reporting Persons.
(b)
Address or principal business office or, if none, residence:
The address of the Reporting Persons is c/o Trove, 40 Broad Street, 8th Floor, Boston, MA 02109.
(c)
Citizenship:
Mr. Gordon is a citizen of the United States of America. Title 19 Promis is a series of a Delaware limited liability company.
(d)
Title of class of securities:
Common Shares, No Par Value
(e)
CUSIP No.:
74346M406
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
181,632 for each of Mr. Gordon and Title 19 Promis consisting of (i) the August 2021 Common Shares, (ii) the March 2022 Warrant Shares, (iii) the October 2022 Common Shares, (iv) the August 2023 Common Shares, (v) the Conversion Shares, (vi) the October 2022 Warrant Shares, (vii) the August 2023 Warrant Shares, (viii) the July 2024 Common Shares, (ix) the July 2024 Tranche A Warrant Shares, (x) the July 2024 Tranche B Warrant Shares, (xi) the July 2024 Tranche C Warrant Shares, (xii) 13,813 Common Shares underlying the remaining July 2024 Tranche B Warrants, (xiii) 13,813 Common Shares underlying the remaining July 2024 Tranche C Warrants and (xiv) the July 2025 Warrant Shares. Mr. Gordon is the sole manager of Title 19 Promis.
(b)
Percent of class:
2.0% for each of Mr. Gordon and Title 19 Promis. The percentage of beneficial ownership is based upon 8,967,693 Common Shares outstanding as of March 25, 2026, plus (i) the March 2022 Warrant Shares, (ii) the October 2022 Warrant Shares, (iii) the August 2023 Warrant Shares, (iv) 13,813 Common Shares underlying the remaining July 2024 Tranche B Warrants, (v) 13,813 Common Shares underlying the remaining July 2024 Tranche C Warrants and (vi) the July 2025 Warrant Shares.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
0 for each of Mr. Gordon and Title 19 Promis.
(ii) Shared power to vote or to direct the vote:
181,632 for each of Mr. Gordon and Title 19 Promis.
(iii) Sole power to dispose or to direct the disposition of:
0 for each of Mr. Gordon and Title 19 Promis.
(iv) Shared power to dispose or to direct the disposition of:
181,632 for each of Mr. Gordon and Title 19 Promis.
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
See Exhibit A to Exhibit 99.1.
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
What percent of ProMIS Neurosciences (PMN) do Michael S. Gordon and Title 19 Promis own?
They each beneficially own 2.0% of ProMIS common shares, equal to 181,632 shares, based on 8,967,693 shares outstanding as of March 25, 2026 as stated in the filing.
How did the Reporting Persons accumulate their ProMIS (PMN) holdings?
Holdings derive from private placements, warrant exercises and conversions, including October 2022 and August 2023 private placements, conversion of Series 2 preferred shares, open market purchases, and exercise of July 2024 and July 2025 warrants.
Are any of the warrants exercisable and what are key warrant terms disclosed?
Yes. The July 2025 Warrants (539,100 issued; 21,564 post‑split) are currently exercisable and expire five years after issuance; some July 2024 warrants remain exercisable with specified exercise prices and conditional expiry terms described in the filing.
Does Michael S. Gordon retain sole investment control over the reported shares?
No. The filing states Mr. Gordon no longer has investment control over shares held by Skye Peak Partners LLC (SPP) after assignments and that certain holdings are shared via Title 19 Promis; shared voting and dispositive power is reported for 181,632 shares.
