Daniel S. Sundheim - 22 May 2026 Form 4 Insider Report for Maplebear Inc. (CART)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: CART
Reported as of: 22 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 May 2026, 17:15:01 UTC
Prior SEC filing: 27 May 2025
Source filing: View source filing
Reporting owner signature: D1 Capital Partners L.P., By: /s/ Amanda Hector, General Counsel and Chief Compliance Officer

Key filing fact

Daniel S. Sundheim filed Form 4 for Maplebear Inc. (CART) on 27 May 2026.

Key facts

This page summarizes Daniel S. Sundheim's Form 4 filing for Maplebear Inc. (CART).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 27 May 2026, 17:15.

Change

Previous filing in this sequence was filed on 27 May 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (2)

CIK 0001621588 Primary reporting owner

Sundheim Daniel S.

Relationship: Director, 10%+ Owner
Address: C/O D1 CAPITAL PARTNERS L.P., 9 WEST 57TH STREET, 36TH FLOOR, NEW YORK
Signature: D1 Capital Partners L.P., By: /s/ Amanda Hector, General Counsel and Chief Compliance Officer
Signature date: 27 May 2026

CIK 0001747057

D1 Capital Partners L.P.

Relationship: Other*, 10%+ Owner
Address: 9 WEST 57TH STREET, 36TH FLOOR, NEW YORK
Signature: /s/ Daniel S. Sundheim
Signature date: 27 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CART transaction

Common Stock

Award

Transaction value
Shares: +6,048
Change %: +22%
Price: $0.000000^*
Shares after: 33,352
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F2, F3

CART transaction

Common Stock

Award

Transaction value
Shares: +6,048
Change %: +22%
Price: $0.000000^*
Shares after: 33,352
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F2, F3

CART holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 26,678,056
Date: 22 May 2026
Ownership: See footnotes
Footnotes: F3, F4

CART holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 26,678,056
Date: 22 May 2026
Ownership: See footnotes
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

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.

Footnote F2

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.

Footnote F3

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.

Footnote F4

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.

SEC 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.