Amendment: SEC Form SCHEDULE 13D/A filed by Grove Collaborative Holdings Inc.

Item 4 of the Schedule 13D is hereby amended to add the following: As previously disclosed, as of August 7, 2025, the Reporting Persons and the Issuer determined to establish the Working Group comprised of representatives of the Issuer and Messrs. Karp and Berman to identify and pursue avenues for unlocking greater value for the Issuer. In connection with their participation in the Working Group, on September 21, 2025, the Issuer, HCI Grove and HCI Grove Management entered into a Letter Agreement (the "Letter Agreement"). Pursuant to the Letter Agreement, HCI Grove and HCI Grove Management agreed (on behalf of themselves and their representatives) to customary confidentiality, non-disclosure and non-use obligations for a period of 18 months, subject to certain customary exceptions. The Letter Agreement also contains various restrictions on the Reporting Persons, including with respect to (i) the acquisition by the Reporting Persons of beneficial ownership of more than 9.99% of the Issuer's outstanding common stock and the transfer of shares (other than in certain open market transactions) in a manner that would result in a third party beneficially owning more than 4.9% of the Issuer's outstanding common stock, (ii) making certain stockholder proposals, nominations, or public statements regarding the Issuer's management and Board structure and participating in certain campaigns with respect to the Issuer's directors and (iii) making, participating in or taking certain actions with respect to unsolicited transactions. Such provisions will expire upon the six month anniversary of the date of the Letter Agreement, provided, that if prior to the Issuer's 2026 annual meeting of stockholders any (A) stockholder of the Issuer (other than a then-serving executive officer or director of the Issuer) submits and has not withdrawn a nomination for the Board or a stockholder proposal or commences a withhold campaign with respect to any Issuer candidate for the Board, or (B) third party publicly seeks to undertake an extraordinary transaction with the Issuer without the approval of the Board (either (A) or (B), a "Trigger Event"), then the standstill termination date will automatically be extended to the earlier of (i) the first business day after completion of the Issuer's 2026 annual meeting of stockholders and (ii) if such meeting has not yet occurred, September 30, 2026. Additionally, the Letter Agreement contains a lock-up provision that prohibits the Reporting Persons from transferring or disposing of the Issuer's securities, except in certain limited circumstances, such as certain transfers to affiliates or Board-approved transactions. The lock-up provision applies until the earlier of (i) six months following the date of the Letter Agreement and (ii) the first date after the agreement that any officer or director transfers the Issuer's common stock in a reportable transaction (other than certain permitted circumstances). The Letter Agreement also provides that HCI Grove and HCI Grove Management may terminate the Working Group at any time, and that the Issuer may terminate the Working Group at any time after the six-month anniversary of the date of the Letter Agreement or earlier in certain limited circumstances. The Letter Agreement also contemplates the automatic termination of the Working Group as of September 30, 2026. For so long as the Reporting Persons participate in the Working Group, the Reporting Persons anticipate that, they and their representatives will communicate with members of the Board and members of the Issuer's management, with respect to potential strategic opportunities that may be available to the Issuer, potential investment and acquisition opportunities, capital allocation and other operational, strategic, financial or governance matters. The Letter Agreement does not obligate any of the Reporting Persons to continue to participate in the Working Group. The foregoing description of the Letter Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Letter Agreement, a copy of which is filed as Exhibit 3 hereto and is incorporated herein by reference.

Item 6 of the Schedule 13D is hereby amended to add the following: The disclosure in Item 4 regarding the Letter Agreement is incorporated by reference herein.

Item 7 of the Schedule 13D is hereby amended to add the following exhibits: Exhibit 3 Letter Agreement, dated September 21, 2025, between Grove Collaborative Holdings, Inc., HCI Grove, LLC and HCI Grove Management, LLC.* * Filed herewith.