Maravai LifeSciences Holdings, Inc. group filing amends beneficial ownership disclosure to report 13,488,799 shares of Class A common stock, representing 9.21% of the class. The filing lists the reporting group members and per-member sole voting/dispositive holdings, including Stuart Feldman with 10,337,680 shares (7.06%) and Hudson View Holdings LLC with 7,337,680 shares (5.01%). The filing is a joint Schedule 13G/A amendment signed by the group representatives on 05/14/2026.
Positive
None.
Negative
None.
Insights
Joint group reports a meaningful passive stake and discloses control lines.
The Schedule 13G/A shows a group holding 13,488,799 shares, equal to 9.21% of Class A stock as reported. The filing enumerates sole voting and dispositive power by member, notably 10,337,680 shares attributed to Stuart Feldman.
Because this is a 13G amendment, the stake is disclosed as passive under the filing's classification; subsequent filings would show changes in status if the group's intent changes.
Disclosure clarifies ownership composition for investor transparency.
The joint filing identifies each member's address, citizenship, and exact sole voting/dispositive counts (for example, Hudson View Holdings LLC: 7,337,680). This creates a clear, auditable ownership picture for third parties.
Watch for any future Form 4 or Schedule 13D that would signal active control intentions; timing of such filings is not stated here.
Key Figures
Beneficially owned:13,488,799 sharesPercent of class:9.21%Stuart Feldman holdings:10,337,680 shares+2 more
5 metrics
Beneficially owned13,488,799 sharesItem 4 of Schedule 13G/A amendment
Percent of class9.21%Item 4 of Schedule 13G/A amendment
Stuart Feldman holdings10,337,680 sharesItem 4 sole voting/dispositive power; 7.06%
Matthew Barkoff holdings2,841,119 sharesItem 4 sole voting/dispositive power; 1.94%
Key Terms
Schedule 13G/A, beneficially owned, sole dispositive power, Joint Filing Agreement
4 terms
Schedule 13G/Aregulatory
"Item 1 and header identifying this filing type and amendment"
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.
beneficially ownedregulatory
"Item 4: Amount beneficially owned: 13,488,799"
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 dispositive powerregulatory
"Columns 7 and 9 list Sole Dispositive Power figures for each member"
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.
Joint Filing Agreementlegal
"Exhibit Information 99.1 Joint Filing Agreement (incorporated by reference)"
What stake does the reporting group hold in Maravai (MRVI)?
The group reports 13,488,799 shares, representing 9.21% of Class A common stock. The numbers are shown in Item 4 of the Schedule 13G/A amendment dated 05/14/2026.
Who are the members of the filing group for MRVI?
The filing lists seven members: 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, with addresses provided in Item 2.
How much does Stuart Feldman beneficially own according to the amendment?
Stuart Feldman is reported with 10,337,680 shares, equal to 7.06% of the Class A stock, shown under Item 4 as sole voting and dispositive power.
Does this Schedule 13G/A indicate active control or a passive investment?
This is a Schedule 13G/A amendment, which typically reflects a passive reporting classification; the filing text lists holdings and voting/dispositive powers but does not state an intent to act as an active controller.
When was the amendment signed and submitted?
Signatures on the amendment are dated 05/14/2026, and the cover references the issuer CUSIP 56600D107 for Class A common stock.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 3)
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)
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):
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
7,337,680.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
7,337,680.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
7,337,680.00
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)
5.01 %
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
7,337,680.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
7,337,680.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
7,337,680.00
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)
5.01 %
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)
2.05 %
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)
2.05 %
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
10,337,680.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
10,337,680.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
10,337,680.00
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)
7.06 %
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
2,841,119.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
2,841,119.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,841,119.00
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)
1.94 %
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
310,000.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
310,000.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
310,000.00
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)
0.21 %
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:
13,488,799
(b)
Percent of class:
9.21%
(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: 7,337,680
(2) Hudson View Capital LLC: 7,337,680
(3) JD Squared Holdings II LLC:
3,000,000
(4) JD Squared Capital II LLC: 3,000,000
(5) Stuart Feldman: 10,337,680
(6) Matthew Barkoff: 2,841,119
(7) Joshua Wool: 310,000
(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: 7,337,680
(2) Hudson View Capital LLC: 7,337,680
(3) JD Squared Holdings II LLC:
3,000,000
(4) JD Squared Capital II LLC: 3,000,000
(5) Stuart Feldman: 10,337,680
(6) Matthew Barkoff: 2,841,119
(7) Joshua Wool: 310,000
(iv) Shared power to dispose or to direct the disposition of:
0
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.
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:
05/14/2026
Hudson View Capital LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
05/14/2026
JD Squared Holdings II LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
05/14/2026
JD Squared Capital II LLC
Signature:
/s/ Jeffrey Goldberg
Name/Title:
Authorized Signatory
Date:
05/14/2026
Stuart Feldman
Signature:
/s/ Joseph Brucchieri
Name/Title:
Attorney-in-fact
Date:
05/14/2026
Matthew Barkoff
Signature:
/s/ Matthew Barkoff
Name/Title:
Individual
Date:
05/14/2026
Joshua Wool
Signature:
/s/ Joshua Wool
Name/Title:
Individual
Date:
05/14/2026
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)
