Monte Rosa Therapeutics (common stock) filing a Schedule 13G/A (Amendment No. 2) reports beneficial ownership by Dimension-related entities and affiliated individuals. The cover pages show shared voting and dispositive power over 6,513,765 shares for several reporting persons and 5,663,265 and 850,500 shares held directly by Dimension Capital I and Dimension Capital II, respectively. The percentages use a baseline of 80,015,667 shares outstanding as of March 2, 2026.
Positive
None.
Negative
None.
Insights
Holds and shared control by Dimension funds and affiliated principals disclosed.
Schedule 13G/A lists shared voting and dispositive power over specific share counts: 6,513,765, 5,663,265, and 850,500. The filing attributes ownership across fund entities and GP/management structures, consistent with pooled investment voting arrangements.
Key dependency is the 80,015,667 shares outstanding anchor used to compute reported percentages. Subsequent disclosures would show whether these holdings change.
Disclosure clarifies beneficial owners and reporting relationships for investor transparency.
The filing names individuals (Adam Goulburn, Zavain Dar, Nan Li) and entities (Dimension Management, Dimension Capital I/II and GP entities) and provides a business address. It explains the advisory/GP relationships that produce shared power metrics.
For investors, the filing documents ownership scale (single-figure percentages) using the issuer's reported outstanding shares as of March 2, 2026.
Key Figures
Shares outstanding:80,015,667 sharesShared voting/dispositive power (example):6,513,765 sharesDimension Capital I direct holdings:5,663,265 shares+2 more
5 metrics
Shares outstanding80,015,667 sharesas of March 2, 2026
Shared voting/dispositive power (example)6,513,765 sharesreported for Dimension Management and affiliated reporting persons
Dimension Capital I direct holdings5,663,265 sharesreported beneficial ownership
Dimension Capital II direct holdings850,500 sharesreported beneficial ownership
Reported percentage (example)8.1%percentage based on 80,015,667 outstanding
Key Terms
Schedule 13G/A, Beneficial ownership, Shared dispositive power, General partner (GP)
4 terms
Schedule 13G/Aregulatory
"Amendment No. 2) Monte Rosa Therapeutics, Inc. Common Stock"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Beneficial ownershipfinancial
"Amount beneficially owned: The information required by this item"
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.
What stake does Dimension Capital I hold in Monte Rosa Therapeutics (GLUE)?
Dimension Capital I directly holds 5,663,265 shares of common stock, representing 7.1% based on 80,015,667 shares outstanding as of March 2, 2026. The filing lists this amount on the cover page rows.
Who are the individuals listed on the Schedule 13G/A for GLUE?
The filing names Adam Goulburn, Zavain Dar, and Nan Li as reporting persons. Each is disclosed as a member of the GP entities that exercise shared voting and dispositive power over certain holdings.
How many shares does Dimension Management report shared control over?
Dimension Management and related GP entities are shown with shared voting and dispositive power over 6,513,765 shares, recorded on the cover pages and used to report an 8.1% stake versus the stated outstanding share count.
What outstanding share count does the filing use to calculate percentages?
The ownership percentages are calculated using 80,015,667 shares outstanding as of March 2, 2026, as cited from the issuer's Annual Report on Form 10-K filed March 17, 2026.
Does the Schedule 13G/A indicate sole voting power for the reporting persons?
No. The cover pages report 0.00 shares of sole voting power and list the holdings under shared voting and shared dispositive power, indicating collective control through the listed entities.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 2)
Monte Rosa Therapeutics, Inc.
(Name of Issuer)
Common Stock, par value $0.0001 per share
(Title of Class of Securities)
61225M102
(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):
61225M102
1
Names of Reporting Persons
Adam Goulburn
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
AUSTRALIA
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
6,513,765.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
6,513,765.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
6,513,765.00
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)
8.1 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Zavain Dar
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
6,513,765.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
6,513,765.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
6,513,765.00
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)
8.1 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Nan Li
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
6,513,765.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
6,513,765.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
6,513,765.00
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)
8.1 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Dimension Management, L.P.
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
6,513,765.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
6,513,765.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
6,513,765.00
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)
8.1 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Dimension Capital I GP, LLC
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
5,663,265.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
5,663,265.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
5,663,265.00
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)
7.1 %
12
Type of Reporting Person (See Instructions)
CO
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Dimension Management GP, LLC
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
6,513,765.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
6,513,765.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
6,513,765.00
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)
8.1 %
12
Type of Reporting Person (See Instructions)
CO
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Dimension Capital I, L.P.
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
5,663,265.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
5,663,265.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
5,663,265.00
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)
7.1 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Dimension Capital II, L.P.
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
850,500.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
850,500.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
850,500.00
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)
1.1 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
61225M102
1
Names of Reporting Persons
Dimension Capital II GP, LLC
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
850,500.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
850,500.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
850,500.00
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)
1.1 %
12
Type of Reporting Person (See Instructions)
CO
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Monte Rosa Therapeutics, Inc.
(b)
Address of issuer's principal executive offices:
321 Harrison Avenue, Suite 900, Boston, MA 02118
Item 2.
(a)
Name of person filing:
The names of the persons filing this report (collectively, the "Reporting Persons") with respect to shares of Common Stock, par value $0.0001 per share (the "Common Stock") of Monte Rosa Therapeutics, Inc. (the "Issuer") are:
Adam Goulburn
Zavain Dar
Nan Li
Dimension Management, L.P. ("Dimension Management")
Dimension Capital I GP, LLC ("Dimension Capital I GP")
Dimension Management GP, LLC ("Dimension Management GP")
Dimension Capital I, L.P. ("Dimension Capital I")
Dimension Capital II, L.P. ("Dimension Capital II")
Dimension Capital II GP, LLC ("Dimension Capital II GP")
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of each of the Reporting Persons is 632 Broadway, Suite 801, New York, NY 10012.
(c)
Citizenship:
Mr. Goulburn is an Australian citizen. Each of Mr. Dar and Mr. Li is a United States citizen. Each of Dimension Management, Dimension Capital I and Dimension Capital II is a Delaware limited partnership. Each of Dimension Capital I GP, Dimension Capital II GP and Dimension Management GP is a Delaware limited liability company.
(d)
Title of class of securities:
Common Stock, par value $0.0001 per share
(e)
CUSIP No.:
61225M102
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:
The information required by this item with respect to each Reporting Person is set forth in Rows 5 through 9 of the cover pages to this Schedule 13G.
Dimension Capital I directly holds 5,663,265 shares of Common Stock. Dimension Capital II directly holds 850,500 shares of Common Stock. Dimension Management is the investment advisor to Dimension Capital I and Dimension Capital II, and Dimension Management GP is the general partner of Dimension Management. Dimension Capital I GP is the general partner to the general partner of Dimension Capital I, and Dimension Capital II GP is the general partner to the general partner of Dimension Capital II. Mr. Goulburn, Mr. Dar, and Mr. Li are members of each of Dimension Management GP, Dimension Capital I GP and Dimension Capital II GP.
(b)
Percent of class:
The information required by this item with respect to each Reporting Person is set forth in Row 11 of the cover pages to this Schedule 13G. The ownership percentages reported are based on 80,015,667 shares of Common Stock outstanding as of March 2, 2026, as reported in the Issuer's Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 17, 2026.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by this item with respect to each Reporting Person is set forth in Row 5 of the cover pages to this Schedule 13G.
(ii) Shared power to vote or to direct the vote:
The information required by this item with respect to each Reporting Person is set forth in Row 6 of the cover pages to this Schedule 13G.
(iii) Sole power to dispose or to direct the disposition of:
The information required by this item with respect to each Reporting Person is set forth in Row 7 of the cover pages to this Schedule 13G.
(iv) Shared power to dispose or to direct the disposition of:
The information required by this item with respect to each Reporting Person is set forth in Row 8 of the cover pages to this Schedule 13G.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
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.
Not Applicable
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.
Adam Goulburn
Signature:
/s/ Adam Goulburn
Name/Title:
Adam Goulburn
Date:
04/22/2026
Zavain Dar
Signature:
/s/ Zavain Dar
Name/Title:
Zavain Dar
Date:
04/22/2026
Nan Li
Signature:
/s/ Nan Li
Name/Title:
Nan Li
Date:
04/22/2026
Dimension Management, L.P.
Signature:
/s/ Adam Goulburn
Name/Title:
By: Dimension Management GP, LLC, its general partne; By: Adam Goulburn, Member
Date:
04/22/2026
Dimension Capital I GP, LLC
Signature:
/s/ Adam Goulburn
Name/Title:
Adam Goulburn, Member
Date:
04/22/2026
Dimension Management GP, LLC
Signature:
/s/ Adam Goulburn
Name/Title:
Adam Goulburn, Member
Date:
04/22/2026
Dimension Capital I, L.P.
Signature:
/s/ Adam Goulburn
Name/Title:
By: Dimension Capital I GP, LP, its general partner; By: Adam Goulburn, Member
Date:
04/22/2026
Dimension Capital II, L.P.
Signature:
/s/ Adam Goulburn
Name/Title:
By: Dimension Capital II GP, LP, its general partner; By: Adam Goulburn, Member
