[SCHEDULE 13G/A] MARAVAI LIFESCIENCES HOLDINGS, INC. Amended Passive Investment Disclosure
Maravai: 12 West reports 4.9% stake
Maravai LifeSciences Holdings, Inc. ownership update: 12 West Capital Management and Joel Ramin report beneficial ownership of 7,260,195 shares of Class A Common Stock, representing 4.9% of the class.
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Maravai LifeSciences Holdings, Inc. ownership update: 12 West Capital Management and Joel Ramin report beneficial ownership of 7,260,195 shares of Class A Common Stock, representing 4.9% of the class. The percent is calculated using 146,383,162 shares outstanding as of February 19, 2026.
The statement, filed as an amendment, attributes shared voting and shared dispositive power over the reported shares to the 12 West Funds and identifies Mr. Ramin as the managing member of the reporting manager. Signatures are dated May 15, 2026.
Insights
Filing updates beneficial ownership disclosure under Section 13.
The amendment clarifies that 12 West Capital Management and Joel Ramin report shared voting and dispositive power over 7,260,195 shares, equal to 4.9% of Class A Common Stock based on the company’s stated outstanding share count as of February 19, 2026.
Disclosure mechanics are standard for a Schedule 13G/A: the filing reiterates the reporting persons, their business address, citizenship, and the calculation basis. Future filings would update any change in holdings or percent ownership.
Holds are below 5% threshold and reported as shared ownership.
The 4.9% stake is below the 5% reporting threshold that often triggers different filing obligations; the report lists the 12 West Funds as the holders and Mr. Ramin as managing member. The filing cites the company’s Form 10-K for the outstanding share base.
Market impact is typically limited for sub-5% holdings; subsequent Schedule 13D/A or Form 4 filings would be required only if the reporting persons change intent or acquire additional shares that alter voting/dispositive power.
Key Figures
Beneficially owned shares:7,260,195 sharesPercent of class:4.9%Shares outstanding used:146,383,162 shares
3 metrics
Beneficially owned shares7,260,195 sharesBeneficial ownership reported by 12 West Funds
Percent of class4.9%Calculated using outstanding shares as of <date>February 19, 2026</date>
Shares outstanding used146,383,162 sharesOutstanding share count from Form 10-K (as of <date>February 19, 2026</date>)
"Amount beneficially owned: The information required by Item 4(a) is set forth in Row 9"
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.
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.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What stake does 12 West Capital report in Maravai (MRVI)?
12 West Capital and Joel Ramin report beneficial ownership of 7,260,195 shares, representing 4.9% of Class A Common Stock based on the company’s outstanding shares as of February 19, 2026. The filing is an amendment to a Schedule 13G/A.
How was the 4.9% ownership percentage calculated?
The percentage is calculated using an aggregate of 146,383,162 shares outstanding as of February 19, 2026, as reported in Maravai’s Form 10-K for the fiscal year ended December 31, 2025, which the filing specifically cites for the share total.
Who holds voting and dispositive power over the reported shares?
The filing states that the reported shares are held by the 12 West Funds with shared voting power and shared dispositive power. Joel Ramin is identified as managing member of the reporting manager associated with those funds.
Does this Schedule 13G/A indicate an activist intent?
The amendment discloses ownership and control attributes but does not state any activist intent. It lists shared voting and dispositive power; no statement of intent or plans is included in the provided excerpt.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 5)
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
12 West Capital Management LP
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
7,260,195.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
7,260,195.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
7,260,195.00
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)
4.9 %
12
Type of Reporting Person (See Instructions)
IA, PN
SCHEDULE 13G
CUSIP Number(s):
56600D107
1
Names of Reporting Persons
Joel Ramin
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
7,260,195.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
7,260,195.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
7,260,195.00
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)
4.9 %
12
Type of Reporting Person (See Instructions)
HC, 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, CA 92121
Item 2.
(a)
Name of person filing:
This statement is filed by:
(i) 12 West Capital Management LP ("12 West Management"), a Delaware limited partnership, and the investment manager to 12 West Capital Fund LP, a Delaware limited partnership, and 12 West Capital Offshore Fund LP, a Cayman Islands exempted limited partnership ("12 West Funds"), with respect to the shares of Class A common stock, par value $0.01 per share ("Class A Common Stock"), of Maravai LifeSciences Holdings, Inc. (the "Company") directly held by the 12 West Funds; and
(ii) Mr. Joel Ramin ("Mr. Ramin"), the managing member of 12 West Capital Management, LLC, the general partner of 12 West Management, with respect to the shares of Class A Common Stock directly held by the 12 West Funds.
The foregoing persons are hereinafter sometimes each referred to as a "Reporting Person" and collectively referred to as the "Reporting Persons."
The filing of this statement should not be construed as an admission that any Reporting Person is, for purposes of Section 13 of the Securities Exchange Act of 1934, the beneficial owner of the securities reported herein.
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of each of the Reporting Persons is 475 Tenth Avenue, 14th Floor, New York, NY 10018.
(c)
Citizenship:
12 West Management is a Delaware limited partnership. Mr. Ramin is a United States citizen.
(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:
The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 146,383,162 shares of Class A Common Stock outstanding as of February 19, 2026, as reported in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the Securities and Exchange Commission on February 26, 2026.
(b)
Percent of class:
4.9%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(ii) Shared power to vote or to direct the vote:
The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iv) Shared power to dispose or to direct the disposition of:
`The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
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.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
See Item 2(a). The 12 West Funds have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Class A Common Stock reported herein.
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.
12 West Capital Management LP
Signature:
/s/ Joel Ramin
Name/Title:
By: 12 West Capital Management, LLC, General Partner, By: Joel Ramin, Managing Member
