Maravai CEO has 29K shares withheld for taxes

CEO Bernd Brust reported tax-related share withholding tied to RSU vesting, with over 2 million MRVI shares still held directly and through a trust.

Rhea-AI Filing Summary

MARAVAI LIFESCIENCES HOLDINGS, INC. (MRVI) disclosed that Chief Executive Officer and director Bernd Brust had 29,250 shares of Class A Common Stock withheld on September 8, 2026 to pay tax liabilities arising from the vesting of restricted stock unit awards, at a value of $7.32 per share. After this tax-withholding event, he held 1,561,249 Class A shares directly and 466,771 Class A shares indirectly through The Bernd Brust Management Trust. No transactions were reported under a Rule 10b5-1 trading plan.

Insider Trade Summary

Tax Withholding: 29,250 shares

Tax Withholding 2 txns

Insider Brust Bernd

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1	29,250	$7.32	$214K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 1,561,249 shares (Direct); Class A Common Stock — 466,771 shares (Indirect, The Bernd Brust Management Trust)

Footnotes (1)

1. F1. Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock unit awards held by the reporting person.

Key Figures

Shares withheld for taxes: 29,250 shares Per-share value for withheld shares: $7.32 per share Direct holdings after transaction: 1,561,249 shares +2 more

5 metrics

Shares withheld for taxes 29,250 shares Class A Common Stock withheld on September 8, 2026 for tax obligations on RSU vesting

Per-share value for withheld shares $7.32 per share Value used for the 29,250 shares withheld to satisfy tax withholding obligations

Direct holdings after transaction 1,561,249 shares Class A Common Stock directly held by Bernd Brust following the September 8, 2026 withholding

Indirect holdings after transaction 466,771 shares Class A Common Stock held indirectly through The Bernd Brust Management Trust

Total shares involved in tax-withholding event count 1 transaction, 29,250 shares Payment of tax liability by delivering or withholding securities on September 8, 2026

Key Terms

restricted stock unit awards, tax withholding obligations, indirectly

3 terms

restricted stock unit awards financial

"in connection with the vesting of restricted stock unit awards held by the reporting person"

Restricted stock unit awards are company promises to deliver a specific number of shares to employees or service providers in the future once conditions—such as staying with the company for a set time or meeting performance targets—are met. They matter to investors because when the promises convert into actual shares they increase the total share count and can reduce earnings per share, while also aligning recipients’ interests with stock performance much like deferred pay that turns into ownership if goals are met.

tax withholding obligations financial

"Represents shares withheld to satisfy tax withholding obligations in connection with the vesting"

indirectly financial

"466,771 Class A shares indirectly through The Bernd Brust Management Trust"

FAQ

What insider transaction did MRVI CEO Bernd Brust report on September 8, 2026?

He reported that 29,250 shares of Maravai Lifesciences Class A Common Stock were withheld on September 8, 2026 to satisfy tax withholding obligations in connection with vesting restricted stock unit awards.

Was the September 8, 2026 MRVI insider transaction an open-market sale?

No. The filing states the 29,250 shares were withheld to satisfy tax withholding obligations related to vesting restricted stock unit awards, not sold in an open-market transaction.

How many MRVI shares does CEO Bernd Brust hold directly after this Form 4?

After the September 8, 2026 tax-withholding event, Bernd Brust directly held 1,561,249 shares of Maravai Lifesciences Class A Common Stock.

What are CEO Bernd Brust’s indirect holdings of MRVI stock?

In addition to his direct holdings, Bernd Brust reported 466,771 shares of Maravai Lifesciences Class A Common Stock held indirectly through The Bernd Brust Management Trust.

At what value were the withheld MRVI shares recorded in this Form 4?

The 29,250 withheld shares were reported at $7.32 per share in connection with satisfying tax withholding obligations on vesting restricted stock unit awards.

Was the MRVI insider transaction made under a Rule 10b5-1 trading plan?

No. The filing indicates that the transactions reported for Bernd Brust were not made pursuant to a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/09/2026 - 06:49 PM Accepted by SEC EDGAR 09/09/2026 - 06:49 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brust Bernd

(Last) (First) (Middle)

C/O MARAVAI LIFESCIENCES HOLDINGS, INC.

10770 WATERIDGE CIRCLE, SUITE 200

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MARAVAI LIFESCIENCES HOLDINGS, INC. [ MRVI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	09/08/2026		F		29,250(1)	D	$7.32	1,561,249	D
Class A Common Stock								466,771	I	The Bernd Brust Management Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock unit awards held by the reporting person.

Remarks:

	/s/ Kurt Oreshack, by power of attorney for Bernd Brust	09/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)