# EDGAR Filing Document

**Accession Number:** 0001627281
**File Stem:** 0001171843-25-004747
**Filing Date:** 2025-7
**Character Count:** 4980
**Document Hash:** 429b614a62610e8527acf4d152210266
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001171843-25-004747.hdr.sgml**: 20250728

**ACCESSION NUMBER**: 0001171843-25-004747

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250728

**FILED AS OF DATE**: 20250728

**DATE AS OF CHANGE**: 20250728

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cellectis S.A.
- **CENTRAL INDEX KEY:** 0001627281
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** I0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36891
- **FILM NUMBER:** 251156088

**BUSINESS ADDRESS:**
- **STREET 1:** 8 RUE DE LA CROIX JARRY
- **CITY:** PARIS, LLE-DE-FRANCE
- **STATE:** I0
- **ZIP:** 75013
- **BUSINESS PHONE:** 33181691600

**MAIL ADDRESS:**
- **STREET 1:** 8 RUE DE LA CROIX JARRY
- **CITY:** PARIS, LLE-DE-FRANCE
- **STATE:** I0
- **ZIP:** 75013

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**Form 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934**

**Date of Report: July 28, 2025**

**Commission File Number: 001-36891**

**Cellectis S.A.**

**(Exact Name of registrant as specified in its charter)**

**8, rue de la Croix Jarry 75013 Paris, France +33 1 81 69 16 00** 

**(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 ] &nbsp;&nbsp;&nbsp;&nbsp; Form 40-F [ ]

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<u>**EXHIBIT INDEX**</u>

---

| | |
|:---|:---|
| <u>**Exhibit**</u> | <u>**Title**</u> |
| [99.1](exh_991.htm) | [Press Release, dated July 28, 2025](exh_991.htm) |

---

------

**SIGNATURES**

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.

---

| | |
|:---|:---|
|  | <u>**&nbsp;&nbsp;&nbsp;&nbsp;Cellectis S.A.&nbsp;&nbsp;&nbsp;&nbsp;**</u> |
|  | (Registrant) |
| Date: July 28, 2025 | <u>&nbsp;&nbsp;&nbsp;&nbsp;/s/ André Choulika&nbsp;&nbsp;&nbsp;&nbsp;</u> |
|  | André Choulika |
|  | Chief Executive Officer |

---

## Exhibit 99.1

**EXHIBIT 99.1**

**Cellectis to Report Second Quarter 2025 Financial Results on August 4, 2025**

NEW YORK, July 28, 2025 (GLOBE NEWSWIRE) -- Cellectis (the "Company") (Euronext Growth: ALCLS- NASDAQ: CLLS), a clinical-stage biotechnology company using its pioneering gene-editing platform to develop life-saving cell and gene therapies, today announced that it will report financial results for the second quarter 2025 ending June 30, 2025 on Monday August 4, 2025 after the close of the US market.

The publication will be followed by an investor conference call and webcast on Tuesday August 5, 2025 at 8:00 AM ET / 2:00 PM CET. The call will include the Company's second quarter results and an update on business activities.

Details for the call are as follows:

**Dial in information:**

Domestic: +1-800-343-5172

International: +1-203-518-9856

Conference ID: CLLSQ2

Webcast Link: https://viavid.webcasts.com/starthere.jsp?ei=1727030&tp_key=10a62ee950

**About Cellectis**

Cellectis is a clinical-stage biotechnology company using its pioneering gene-editing platform to develop life-saving cell and gene therapies. The company utilizes an allogeneic approach for CAR T immunotherapies in oncology, pioneering the concept of off-the-shelf and ready-to-use gene-edited CAR T-cells to treat cancer patients, and a platform to develop gene therapies in other therapeutic indications. With its in-house manufacturing capabilities, Cellectis is one of the few end-to-end gene editing companies that controls the cell and gene therapy value chain from start to finish.

Cellectis' headquarters are in Paris, France, with locations in New York and Raleigh, NC. Cellectis is listed on the Nasdaq Global Market (ticker: CLLS) and on Euronext Growth (ticker: ALCLS). To find out more, visit www.cellectis.com and follow Cellectis on LinkedIn and X.

TALEN® is a registered trademark owned by Cellectis.

**For further information on Cellectis, please contact:**&nbsp;&nbsp;&nbsp;&nbsp;

**Media contacts:**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Pascalyne Wilson, Director, Communications, + 33 (0)7 76 99 14 33, media@cellectis.com&nbsp;&nbsp;&nbsp;&nbsp;

Patricia Sosa Navarro, Chief of Staff to the CEO, +33 (0)7 76 77 46 93

**Investor Relations contact:**&nbsp;&nbsp;&nbsp;&nbsp;

Arthur Stril, Chief Financial Officer & Chief Business Officer, investors@cellectis.com

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Attachment**

* 20250728_Q2 2025 earnings call announcement_ENGLISH (https://ml.globenewswire.com/Resource/Download/956c0ede-e4ed-408b-b5bc-76e8c61b28c3)