[Form 3] Marqeta, Inc. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Marqeta, Inc. (MQ) filed an initial Statement of Beneficial Ownership (Form 3) for its newly designated Principal Accounting Officer, who became a Section 16 officer on October 21, 2025.

The filing reports 82,618 shares of Class A Common Stock held directly. It also lists restricted stock units (RSUs), each convertible into one share, covering 201,329, 16,891, and 54,153 underlying Class A shares at a $0 exercise price. Portions of these RSUs vested on September 1, 2025, with the remaining tranches scheduled to vest on December 1, March 1, June 1, and September 1 through dates extending to September 1, 2027 and March 1, 2028, subject to continued service.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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1. Name and Address of Reporting Person^*

Barkema Sarah

(Last) (First) (Middle)

180 GRAND AVENUE

6TH FLOOR

(Street)

OAKLAND CA 94612

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/21/2025

3. Issuer Name and Ticker or Trading Symbol
Marqeta, Inc. [ MQ ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Principal Accounting Officer

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock	82,618(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units(2)	(3)	(3)	Class A Common Stock	201,329(3)	$0	D
Restricted Stock Units(2)	(4)	(4)	Class A Common Stock	16,891(4)	$0	D
Restricted Stock Units(2)	(5)	(5)	Class A Common Stock	54,153(5)	$0	D

Explanation of Responses:

1. The securities reported herein were acquired by the Reporting Person prior to the Reporting Person becoming a Section 16 officer of the Issuer. The Reporting Person became subject to Section 16 reporting on October 21, 2025, following her designation as Principal Accounting Officer by the Issuer's Board of Directors.

2. Each restricted stock unit is convertible into one share of Class A Common Stock.

3. One-third (1/3rd) of the grant of restricted stock units vested on September 1, 2025 and are included in the shares reported in Table I (minus shares withheld by the Issuer to satisfy tax withholding and remittance obligations). An additional one-twelfth (1/12th) of the remaining restricted stock units vest on each December 1, March 1, June 1, and September 1 thereafter, with the final one-twelfth (1/12th) vesting on September 1, 2027, subject to the Reporting Person's continued service with the Issuer as of each vesting date.

4. One-twelfth (1/12th) of the grant of restricted stock units vested on each of June 1, 2025 and September 1, 2025 and are included in the shares reported on Table I (minus shares withheld by the Issuer to satisfy tax withholding and remittance obligations). One-twelfth (1/12th) of the remaining restricted stock units vest on each December 1, March 1, June 1, and September 1 thereafter, with the final one-twelfth (1/12th) vesting on March 1, 2028, subject to the Reporting Person's continued service with the Issuer as of each vesting date.

5. 10% of the grant of restricted stock units vested on September 1, 2025 and are included in the shares reported on Table I (minus shares withheld by the Issuer to satisfy tax withholding and remittance obligations). 20% of the remaining restricted stock units vest on December 1, 2025, 20% vests on March 1, 2026, and 50% vests on June 1, 2026 , subject to the Reporting Person's continued service to the Issuer as of each vesting date.

Remarks:

	/s/ Sarah J. Barkema	10/24/2025
	** 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 5 (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.

FAQ

What did Marqeta (MQ) disclose in this Form 3?

An initial report of beneficial ownership for its Principal Accounting Officer, effective as a Section 16 officer on October 21, 2025.

How many Marqeta (MQ) shares does the reporting person hold?

Direct ownership of 82,618 shares of Class A Common Stock.

What RSUs are reported for Marqeta (MQ)?

RSUs covering 201,329, 16,891, and 54,153 Class A shares, each at $0 exercise price.

What are the RSU vesting schedules noted?

Tranches vested on September 1, 2025, with additional vesting on December 1, March 1, June 1, and September 1 through September 1, 2027 and March 1, 2028, subject to continued service.

Does each RSU convert into one Marqeta (MQ) share?

Yes. Each restricted stock unit is convertible into one share of Class A Common Stock.

Why was the Form 3 required for Marqeta (MQ)?

The reporting person became a Section 16 officer upon designation as Principal Accounting Officer on October 21, 2025.