[SCHEDULE 13G/A] MARAVAI LIFESCIENCES HOLDINGS, INC. Amended Passive Investment Disclosure
Maravai investors report 2.72% ownership stake
Maravai LifeSciences Holdings, Inc. Class A common stock is reported as being beneficially owned in aggregate by a group led by Hudson View Holdings LLC and related entities and individuals.
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Maravai LifeSciences Holdings, Inc. Class A common stock is reported as being beneficially owned in aggregate by a group led by Hudson View Holdings LLC and related entities and individuals. The group reports beneficial ownership of 4,009,250 shares of Class A common stock, representing 2.72% of the class as of June 30, 2026.
The group members are Hudson View Holdings LLC, Hudson View Capital LLC, JD Squared Holdings II LLC, JD Squared Capital II LLC, Stuart Feldman, Matthew Barkoff and Joshua Wool. All reported voting and dispositive powers are sole, with no shared voting or dispositive power disclosed, and the group states that it owns 5 percent or less of the class.
Key Figures
Beneficially owned shares:4,009,250 sharesPercent of class:2.72%Hudson View entities holdings:674,120 shares each+5 more
8 metrics
Beneficially owned shares4,009,250 sharesAggregate shares beneficially owned by the reporting group
Percent of class2.72%Percentage of Maravai Class A common stock beneficially owned by the group
Hudson View entities holdings674,120 shares eachShares with sole voting and dispositive power for Hudson View Holdings LLC and Hudson View Capital LLC
JD Squared entities holdings3,000,000 shares eachShares with sole voting and dispositive power for JD Squared Holdings II LLC and JD Squared Capital II LLC
Stuart Feldman holdings3,674,120 sharesShares with sole voting and sole dispositive power held by Stuart Feldman
Matthew Barkoff holdings290,130 sharesShares with sole voting and sole dispositive power held by Matthew Barkoff
Joshua Wool holdings45,000 sharesShares with sole voting and sole dispositive power held by Joshua Wool
Ownership threshold status5 percent or lessOwnership reported as not exceeding 5 percent of the class
Key Terms
beneficially owned, sole voting power, sole dispositive power, Schedule 13G, +1 more
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
sole voting powerfinancial
"5 | Sole Voting Power 674,120.00 6 | Shared Voting Power 0.00"
Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.
sole dispositive powerfinancial
"7 | Sole Dispositive Power 3,000,000.00 8 | Shared Dispositive Power 0.00"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
Schedule 13Gregulatory
"If a group has filed this schedule pursuant to 1(c) or 1(d)"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
groupfinancial
"The members of the group are Stuart Feldman, Matthew Barkoff, Hudson View Holdings LLC"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What percentage of MRVI Class A shares does the reporting group hold in this Schedule 13G/A?
The reporting group holds 2.72% of Maravai LifeSciences Holdings, Inc. Class A common stock. This corresponds to 4,009,250 shares beneficially owned as disclosed in the Schedule 13G/A Amendment No. 4.
How many MRVI shares are beneficially owned by Hudson View-affiliated entities?
Hudson View Holdings LLC and Hudson View Capital LLC each report 674,120 shares with sole voting and dispositive power. JD Squared Holdings II LLC and JD Squared Capital II LLC each report 3,000,000 shares with sole voting and dispositive power.
What are Stuart Feldman’s reported holdings of MRVI stock?
Stuart Feldman is reported as beneficially owning 3,674,120 shares of Maravai LifeSciences Holdings, Inc. Class A common stock. He has sole voting and sole dispositive power over all of these shares, with no shared authority disclosed.
Do the reporting persons in this MRVI Schedule 13G/A share voting or dispositive power?
No shared power is reported. The filing shows 0 shared voting power and 0 shared dispositive power. All listed entities and individuals report only sole voting and sole dispositive power over their respective MRVI holdings.
Who are the members of the reporting group for MRVI in this Schedule 13G/A?
The group members are Stuart Feldman, Matthew Barkoff, Hudson View Holdings LLC, Hudson View Capital LLC, JD Squared Holdings II LLC, JD Squared Capital II LLC and Joshua Wool, as identified in the group disclosure section.
What individual MRVI holdings are reported for Matthew Barkoff and Joshua Wool?
Matthew Barkoff reports 290,130 MRVI shares with sole voting and dispositive power. Joshua Wool reports 45,000 MRVI shares, also with sole voting and sole dispositive power and no shared authority.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 4)
MARAVAI LIFESCIENCES HOLDINGS, INC.
(Name of Issuer)
Class A Common Stock, par value $0.01 per share
(Title of Class of Securities)
56600D107
(CUSIP Number)
06/30/2026
(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):
56600D107
1
Names of Reporting Persons
Hudson View Holdings 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
674,120.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
674,120.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
674,120.00
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)
0.46 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
Hudson View Capital 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
674,120.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
674,120.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
674,120.00
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)
0.46 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
JD Squared Holdings II 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
3,000,000.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
3,000,000.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,000,000.00
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)
2.03 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
JD Squared Capital II 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
3,000,000.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
3,000,000.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,000,000.00
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)
2.03 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
Stuart Feldman
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
3,674,120.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
3,674,120.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,674,120.00
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)
2.49 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
Matthew Barkoff
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
290,130.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
290,130.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
290,130.00
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)
0.2 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
Joshua Wool
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
45,000.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
45,000.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
45,000.00
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)
0.03 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
MARAVAI LIFESCIENCES HOLDINGS, INC.
(b)
Address of issuer's principal executive offices:
10770 Wateridge Circle Suite 200, San Diego, California 92121
Item 2.
(a)
Name of person filing:
(1) Hudson View Holdings LLC
(2) Hudson View Capital LLC
(3) JD Squared Holdings II LLC
(4) JD Squared Capital II LLC
(5) Stuart Feldman
(6) Matthew Barkoff
(7) Joshua Wool
(b)
Address or principal business office or, if none, residence:
(1) Hudson View Holdings LLC: 250 West 55th Street, 35th Floor, New York, New York 10019
(2) Hudson View Capital LLC: 250 West 55th Street, 35th Floor, New York, New York 10019
(3) JD Squared Holdings II LLC: 250 West 55th Street, 35th Floor, New York, New York 10019
(4) JD Squared Capital II LLC: 250 West 55th Street, 35th Floor, New York, New York 10019
(5) Stuart Feldman: c/o Hudson View Holdings LLC, 250 West 55th Street, 35th Floor, New York, New York 10019
(6) Matthew Barkoff: c/o Hudson View Holdings LLC, 250 West 55th Street, 35th Floor, New York, New York 10019
(7) Joshua Wool: c/o Hudson View Holdings LLC, 250 West 55th Street, 35th Floor, New York, New York 10019
(c)
Citizenship:
(1) Hudson View Holdings LLC: Delaware
(2) Hudson View Capital LLC: Delaware
(3) JD Squared Holdings II LLC: Delaware
(4) JD Squared Capital II LLC: Delaware
(5) Stuart Feldman: United States
(6) Matthew Barkoff: United States
(7) Joshua Wool: United States
(d)
Title of class of securities:
Class A Common Stock, par value $0.01 per share
(e)
CUSIP No.:
56600D107
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:
4,009,250
(b)
Percent of class:
2.72%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
(1) Hudson View Holdings LLC: 674,120
(2) Hudson View Capital LLC: 674,120
(3) JD Squared Holdings II LLC:
3,000,000
(4) JD Squared Capital II LLC: 3,000,000
(5) Stuart Feldman: 3,674,120
(6) Matthew Barkoff: 290,130
(7) Joshua Wool: 45,000
(ii) Shared power to vote or to direct the vote:
0
(iii) Sole power to dispose or to direct the disposition of:
(1) Hudson View Holdings LLC: 674,120
(2) Hudson View Capital LLC: 674,120
(3) JD Squared Holdings II LLC:
3,000,000
(4) JD Squared Capital II LLC: 3,000,000
(5) Stuart Feldman: 3,674,120
(6) Matthew Barkoff: 290,130
(7) Joshua Wool: 45,000
(iv) Shared power to dispose or to direct the disposition of:
0
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.
The members of the group are Stuart Feldman, Matthew Barkoff, Hudson View Holdings LLC, Hudson View Capital LLC, JD Squared Holdings II LLC, JD Squared Capital II LLC and Joshua Wool.
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.
Hudson View Holdings LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
08/13/2026
Hudson View Capital LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
08/13/2026
JD Squared Holdings II LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
08/13/2026
JD Squared Capital II LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
08/13/2026
Stuart Feldman
Signature:
/s/ Joseph Brucchieri
Name/Title:
Attorney-in-fact
Date:
08/13/2026
Matthew Barkoff
Signature:
/s/ Matthew Barkoff
Name/Title:
Individual
Date:
08/13/2026
Joshua Wool
Signature:
/s/ Joshua Wool
Name/Title:
Individual
Date:
08/13/2026
Exhibit Information
99.1 Joint Filing Agreement (incorporated by reference to Exhibit 99.1 to the Schedule 13G in respect of Maravai LifeSciences Holdings, Inc. filed on May 29, 2025)
99.2 Power of Attorney (incorporated by reference to Exhibit 99.2 to the Schedule 13G in respect of Mural Oncology plc filed on May 14, 2025)
