Emily Reuter POA Limited Power of Attorney The undersigned officer and/or director of Pinterest, Inc. (the “Company”) hereby constitutes and appoints Wanji Walcott and Jacquie Katzel, the undersigned’s true and lawful attorneys-in-fact to: 1) execute for and on behalf of the undersigned, in the undersigned’s capacity as an officer, director and/or 10% shareholder of the Company, any and all Forms 3, 4 and 5 prepared for and on behalf of the undersigned pursuant to Section 16(a) of the Securities Exchange Act of 1934, as amended, and the rules promulgated thereunder (the “Exchange Act”); 2) do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5, complete and execute any amendment or amendments thereto and to timely file such forms with the United States Securities and Exchange Commission (the “SEC”) and any stock exchange or similar authority; 3) obtain credentials enabling the undersigned to make electronic filings with the SEC, including as necessary to prepare, execute in my name and on my behalf, and submit to the SEC a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain and/or regenerate codes and passwords enabling me to make electronic filings with the SEC of reports required by Section 16(a) of the Exchange Act, or any rule or regulation of the SEC; 4) act as account administrator for the undersigned’s EDGAR account, including: (i) appointing, removing and replacing account administrators, technical administrators, account users, and delegated entities; (ii) maintaining the security of Filer’s EDGAR account, including modification of access codes; (iii) maintaining, modifying and certifying the accuracy of information on the undersigned’s EDGAR account dashboard; and (iv) taking any other actions contemplated by Rule 10 of Regulation S-T; and 5) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Limited Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact’s discretion. The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact’s substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned also ratifies hereby any action previously taken by each attorney-in-fact that would have been authorized by this Limited Power of Attorney if it had been in effect at the time such action was taken. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned’s responsibilities to comply with Section 16 of the Exchange Act. This Limited Power of Attorney shall remain in full force and effect until the earliest to occur of (a) the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned’s holdings of and transactions in securities issued by the Company, (b) revocation by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact or (c) as to any attorney-in-fact individually, until such attorney-in-fact is no longer employed by the Company or its subsidiaries. By signing below, the undersigned does hereby revoke any and all other power of attorney documents previously and otherwise executed in connection with the undersigned’s obligations as an officer, director and/or 10% shareholder of the Company to prepare and file Forms 3, 4 and 5, or other forms or reports, or any amendment or amendments thereto, with the SEC and any stock exchange or similar authority, pursuant to Section 16(a) of the Exchange Act. The undersigned hereby gives notice to all who have received, relied on or acted upon such previously executed power of attorney documents and all other
interested parties that the undersigned withdraws every power and authority thereby given and declares such power of attorney documents null and void and of no further force or effect. IN WITNESS WHEREOF, the undersigned has caused this Limited Power of Attorney to be executed as of this 17th day of September 2025. /s/ Emily Reuter Signature Emily Reuter Print Name