Company: LAZ
Filing Date: 2025-07-28
Form Type: 424B5
Source: 0001311370-25-000027
Chunk: 100

Company: Lazard, Inc.
Filing Date: 2025-07-28
Form: 424B5
Chunk 100
---
 registration statement of which this prospectus forms a part, or to contribution with respect to payments which the underwriters, agents, brokers, or dealers may be required to make.

<div align='center'>31</div>

### VALIDITY OF THE SECURITIES
The validity of the securities will be passed upon for us by Sullivan & Cromwell LLP, New York, NY. If the securities are being distributed in an underwritten offering, certain legal matters will be passed upon for the underwriters by counsel identified in the related prospectus supplement.

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### EXPERTS
The financial statements of Lazard, Inc. as of December 31, 2024 and 2023, and for each of the three years in the period ended December 31, 2024, incorporated by reference in this prospectus by reference to Lazard, Inc.’s annual report on Form 10-K for the year ended December 31, 2024, and the effectiveness of Lazard, Inc.’s internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports. Such financial statements are incorporated by reference in reliance upon the reports of such firm given their authority as experts in accounting and auditing.

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$</div>

#### Lazard Group LLC

#### % Senior Notes due 20

#### Fully and Unconditionally Guaranteed by

#### Lazard, Inc.

### PRELIMINARY PROSPECTUS SUPPLEMENT

#### , 2025
<div align='center'>(To Prospectus dated March 14, 2025)</div>

<div align='center'>Joint Lead Book-Running Managers</div>

| Citigroup |     | Lazard Frères & Co. LLC |