6-K

United StatesSecurities and Exchange Commission

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private IssuerPursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of October 2022

Commission File Number 132-02847

INTER & Co, INC.

(Exact name of registrant as specified in its charter)

N/A

(Translation of Registrant’s executive offices)

Av Barbacena, 1.219, 22nd FloorBelo Horizonte, Brazil, ZIP Code 30 190-131Telephone: +55 (31) 2138-7978

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F x Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): Yes ¨ No x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): Yes ¨ No x

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: October 11, 2022

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EXHIBIT INDEX

3

Exhibit 99.1

Update on the CorporateReorganization

Auction of FractionalShares

Grand Cayman, Cayman Islands, October 10, 2022. Inter & Co. Inc. (Nasdaq: INTR; B3: INBR31) (“Inter&Co”), a company incorporated under the laws of the Cayman Islands, with Class A Shares listed on Nasdaq and Brazilian Depositary Receipts – Level II BDRs (“BDRs”) negotiated on B3 – Brasil, Bolsa, Balcão S.A. (“B3”), in connection with the corporate reorganization that migrated the float of Banco Inter S.A. (“Inter”) to Inter&Co (“Corporate Reorganization”), continuing with the operational procedures related to the Corporate Reorganization, hereby announces that, on October 13, 2022, Inter Holding Financeira S.A. (a company indirectly controlled by Inter&Co which is the current sole direct shareholder of Inter), will hold an auction at B3 for the sale of BDRs related to the fractions of Inter shares arising from the merger of shares completed as part of the Corporate Reorganization, as described in the document “Protocol and Justification”, dated as of April 15, 2022 and amended on April 29, 2022.

Information regarding the auction:

In case the sale order is not fully met during the auction, the intermediary will record the unmet balance in the closing call, until the order is fully met or for up to 5 consecutive trading sessions. Inter&Co will maintain the shareholders and the market updated about the result and completion of the auction.

The amounts received in the aforementioned auction will be made available, net of fees, to the holders of the fractions, in the proportion of their interest in the securities sold. Payment will be made to the current account of each shareholder, or will be passed on to the respective custody agents, provided that the shareholder register is duly updated. For those shareholders whose registration is outdated, the amounts will remain available with Inter's bookkeeping agent, Banco Bradesco S.A.

This Notice to Shareholders is for informational purposes and does not constitute an offer to sell or the solicitation of an offer to purchase any securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful in the absence of registration or qualification under the securities laws of such jurisdiction.

SANTIAGO HORACIO STEL

Chief Strategy and Investor Relations Officer