Company: AIZ
Filing Date: 2025-08-15
Form Type: 424B5
Source: 0001193125-25-181851
Chunk: 72

Company: ASSURANT, INC.
Filing Date: 2025-08-15
Form: 424B5
Chunk 72
---
 outstanding at the time the transaction commenced, excluding stock held by: |

| • |     | directors who are also officers of the Company; and |

| • |     | employee stock plans that do not provide employees with the right to determine confidentially whether shares held 
 subject to the plan will be tendered in a tender or exchange offer; or                                            |

| • |     | at or subsequent to the time that the transaction in which the person became an interested stockholder, the 
 business combination is:                                                                                    |

| • |     | approved by the board of directors; and |

26

| • |     | authorized at a meeting of stockholders by the affirmative vote of the holders of at least two-thirds of our outstanding voting stock which is not owned by the interested stockholder. |

For purposes of Section 203, the term “business combinations” includes mergers, consolidations, asset sales or other transactions that result in a financial benefit to the interested stockholder and transactions that would increase the interested stockholder’s proportionate share ownership of the Company. Under some circumstances, Section 203 makes it more difficult for an interested stockholder to effect various business combinations with us for a period of three years after the stockholder becomes an interested stockholder. Although our stockholders have the right to exclude us from the restrictions imposed by Section 203, they have not done so. Section 203 may encourage companies interested in acquiring us to negotiate in advance with the board of directors, because the requirement stated above regarding stockholder approval would be avoided if a majority of the directors approves, prior to the time the party became an interested stockholder, either the business combination or the transaction which results in the stockholder becoming an interested stockholder. Listing Our common stock is listed on the New York Stock Exchange under the trading symbol “AIZ”. Transfer Agent and Registrar The transfer agent and registrar for our common stock is Computershare, P.O. Box 505000, Louisville, KY 40233. 27

DESCRIPTION OF PREFERRED STOCK AND

DEPOSITARY SHARES REPRESENTING PREFERRED STOCK WE MAY OFFER

References to “Assurant”, the “Company”, “us”, “we” or “our” in this section mean Assurant,
Inc., and do not include the subsidiaries of Assurant, Inc. Also, in this section, references to “holders” mean those who own shares of preferred stock or depositary shares, as the case may be, registered in their own names, on the books
that the