Maplebear (CART) director awarded 6,048 RSUs, reports 26.7M indirect shares

Rhea-AI Filing Summary

Sundheim Daniel S. reported acquisition or exercise transactions in this Form 4 filing.

Maplebear Inc. director and significant holder Daniel Sundheim reported an equity award of 6,048 shares of Common Stock in the form of restricted stock units. These RSUs vest in full on the earlier of the company’s next annual stockholder meeting or the one-year anniversary of the grant date, subject to his continued board service.

After this grant, Mr. Sundheim holds 33,352 shares directly. Footnotes explain that additional shares are held through investment vehicles managed by D1 Capital Partners L.P., including D1 Master Holdco I LLC and related entities, and that each reporting person disclaims beneficial ownership beyond its pecuniary interest.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Sundheim Daniel S., D1 Capital Partners L.P.

Role null | null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6,048	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 33,352 shares (Direct, null); Common Stock — 26,678,056 shares (Indirect, See footnotes)

Footnotes (1)

1. The shares represent restricted stock units received by Daniel Sundheim ("Mr. Sundheim"), which vest in full on the earlier of (i) the date of the Issuer's next annual meeting of stockholders (or the date immediately prior to such meeting if Mr. Sundheim's service as a director ends at such meeting due to Mr. Sundheim's failure to be re-elected or Mr. Sundheim not standing for re-election) or (ii) the one-year anniversary of the grant date, in each case subject to Mr. Sundheim's continued service through such date. Represents securities held by Mr. Sundheim. Mr. Sundheim may be deemed to hold the securities reported herein for the benefit of certain funds and accounts to which the Investment Manager (as defined below) serves as the investment manager or investment consultant. This statement is filed by D1 Capital Partners L.P. (the "Investment Manager") and Mr. Sundheim. The foregoing persons are hereinafter sometimes referred to as the "Reporting Persons." The filing of this statement should not be construed as an admission that any Reporting Person is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of the securities reported except to the extent of its pecuniary interest therein, if any. The securities reported herein are held by D1 Master Holdco I LLC ("D1 Master Holdco"), certain related entities, GCM Grosvenor IC SPV, LLC ("GCM IC") and GCM Grosvenor IC SPV 2, LLC ("GCM IC 2"). The Investment Manager is a registered investment adviser and serves as the investment manager of private investment vehicles and accounts, including D1 Master Holdco, and as an investment consultant to certain private investment vehicles and accounts, including GCM IC and GCM IC 2 and may be deemed to beneficially own the securities held by D1 Master Holdco, GCM IC, and GCM IC 2. Mr. Sundheim may be deemed to beneficially own the reported securities by virtue of the fact that Mr. Sundheim indirectly controls the Investment Manager.

Key Figures

RSU grant: 6,048 shares Grant price: $0.0000 per share Direct holdings after grant: 33,352 shares +1 more

4 metrics

RSU grant 6,048 shares Restricted stock units granted on 2026-05-22

Grant price $0.0000 per share Price per share for RSU award

Direct holdings after grant 33,352 shares Common Stock directly held by Daniel Sundheim

Indirect holdings reported 26,678,056 shares Common Stock held indirectly through investment vehicles

Key Terms

restricted stock units, pecuniary interest, investment manager, beneficially own, +1 more

5 terms

restricted stock units financial

"The shares represent restricted stock units received by Daniel Sundheim"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

pecuniary interest financial

"except to the extent of its pecuniary interest therein, if any"

investment manager financial

"serves as the investment manager of private investment vehicles"

beneficially own financial

"may be deemed to beneficially own the securities held by D1 Master Holdco"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

restricted stock units received financial

"The shares represent restricted stock units received by Daniel Sundheim"

Form 4 Insider Transactions: What Each Field Means →

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^*

Sundheim Daniel S.

(Last) (First) (Middle)

C/O D1 CAPITAL PARTNERS L.P.

9 WEST 57TH STREET, 36TH FLOOR

(Street)

NEW YORK NEW YORK 10019

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Maplebear Inc. [ CART ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

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

	Form filed by One Reporting Person
X	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
Common Stock	05/22/2026		A		6,048(1)	A	$0	33,352	D(2)(3)
Common Stock								26,678,056	I	See footnotes(3)(4)

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

1. Name and Address of Reporting Person^*

Sundheim Daniel S.

(Last) (First) (Middle)

C/O D1 CAPITAL PARTNERS L.P.

9 WEST 57TH STREET, 36TH FLOOR

(Street)

NEW YORK NEW YORK 10019

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

D1 Capital Partners L.P.

(Last) (First) (Middle)

9 WEST 57TH STREET

36TH FLOOR

(Street)

NEW YORK NEW YORK 10019

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)	X	Other (specify below)
			See Remarks

Explanation of Responses:

1. The shares represent restricted stock units received by Daniel Sundheim ("Mr. Sundheim"), which vest in full on the earlier of (i) the date of the Issuer's next annual meeting of stockholders (or the date immediately prior to such meeting if Mr. Sundheim's service as a director ends at such meeting due to Mr. Sundheim's failure to be re-elected or Mr. Sundheim not standing for re-election) or (ii) the one-year anniversary of the grant date, in each case subject to Mr. Sundheim's continued service through such date.

2. Represents securities held by Mr. Sundheim. Mr. Sundheim may be deemed to hold the securities reported herein for the benefit of certain funds and accounts to which the Investment Manager (as defined below) serves as the investment manager or investment consultant.

3. This statement is filed by D1 Capital Partners L.P. (the "Investment Manager") and Mr. Sundheim. The foregoing persons are hereinafter sometimes referred to as the "Reporting Persons." The filing of this statement should not be construed as an admission that any Reporting Person is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of the securities reported except to the extent of its pecuniary interest therein, if any.

4. The securities reported herein are held by D1 Master Holdco I LLC ("D1 Master Holdco"), certain related entities, GCM Grosvenor IC SPV, LLC ("GCM IC") and GCM Grosvenor IC SPV 2, LLC ("GCM IC 2"). The Investment Manager is a registered investment adviser and serves as the investment manager of private investment vehicles and accounts, including D1 Master Holdco, and as an investment consultant to certain private investment vehicles and accounts, including GCM IC and GCM IC 2 and may be deemed to beneficially own the securities held by D1 Master Holdco, GCM IC, and GCM IC 2. Mr. Sundheim may be deemed to beneficially own the reported securities by virtue of the fact that Mr. Sundheim indirectly controls the Investment Manager.

Remarks:

The Investment Manager may be deemed to be a director by deputization for purposes of Section 16 under the Securities Exchange Act of 1934 by virtue of the fact that Mr. Sundheim currently serves on the board of directors of the Issuer.

	D1 Capital Partners L.P., By: /s/ Amanda Hector, General Counsel and Chief Compliance Officer	05/27/2026
	/s/ Daniel S. Sundheim	05/27/2026
	** 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)

FAQ

What insider transaction did Daniel Sundheim report at Maplebear (CART)?

Daniel Sundheim reported receiving 6,048 restricted stock units of Maplebear Common Stock as an equity award. The grant had a price of $0.0000 per share and was classified as a grant or award, not an open-market purchase or sale.

How do the newly granted Maplebear (CART) shares to Sundheim vest?

The 6,048 restricted stock units vest in full on the earlier of the next Maplebear annual stockholder meeting or the one-year anniversary of the grant date. Vesting is conditioned on Daniel Sundheim’s continued service as a director through the applicable vesting date.

How many Maplebear (CART) shares does Daniel Sundheim now hold directly?

Following the reported grant, Daniel Sundheim holds 33,352 Maplebear Common Stock shares directly. This figure reflects his direct ownership after adding the 6,048 restricted stock units reported in the filing as a grant, award, or other acquisition.

What large indirect Maplebear (CART) holdings are associated with D1 Capital?

The filing shows 26,678,056 Maplebear Common Stock shares as an indirect holding. These securities are held by entities including D1 Master Holdco I LLC and related vehicles for which D1 Capital Partners L.P. acts as investment manager or consultant.

Does the Maplebear (CART) Form 4 state who is the beneficial owner of the indirect shares?

The filing states D1 Capital Partners L.P. and Daniel Sundheim may be deemed to beneficially own securities held by related entities. It clarifies the reporting persons disclaim beneficial ownership except to the extent of their pecuniary interest in those securities.