Nanobiotix appoints Arnd Christ CFO from October 1

Christ brings more than 25 years of financial leadership experience at biotechnology companies in Europe and the United States.

Rhea-AI Filing Summary

Nanobiotix S.A. (NBTX) appointed Arnd Christ as chief financial officer and a member of its executive board, effective October 1, 2026. He succeeds Bart Van Rhijn, who will step down as chief financial and business officer and executive board member after five years with the company.

Christ has more than 25 years of financial leadership experience at public and private biotechnology companies in Europe and the United States. Most recently, he served as chief financial officer of Immatics N.V. from October 2020 until September 2025. He previously held CFO roles at several European biotechnology companies, including InflaRx, MediGene, NovImmune and Probiodrug.

Key Figures

Appointment effective date: October 1, 2026 Financial leadership experience: More than 25 years Predecessor's service: 5 years +1 more

4 metrics

Appointment effective date October 1, 2026 Arnd Christ's appointment as chief financial officer and executive board member

Financial leadership experience More than 25 years Arnd Christ's experience at public and private biotechnology companies

Predecessor's service 5 years Bart Van Rhijn's service to Nanobiotix

Immatics CFO tenure October 2020 to September 2025 Arnd Christ's most recent CFO role

Key Terms

executive board, forward-looking statements, umbrella patents, physics-based therapeutic approaches

4 terms

executive board financial

"chief financial officer and member of the Company’s executive board"

forward-looking statements regulatory

"contains “forward-looking” statements"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

umbrella patents technical

"owner of more than 30 umbrella patents"

physics-based therapeutic approaches medical

"pioneering disruptive, physics-based therapeutic approaches"

FAQ

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Who is Nanobiotix (NBTX)'s new CFO?

Nanobiotix appointed Arnd Christ as chief financial officer and executive board member effective October 1, 2026. He most recently served as chief financial officer of Immatics N.V. from October 2020 until September 2025 and has more than 25 years of financial leadership experience in biotechnology companies.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 04:30 PM Accepted by SEC EDGAR 10/01/2026 - 04:30 PM Learn about SEC filing dates

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

For the month of October 2026

Commission File Number: 001-39777

Nanobiotix S.A.
(Translation of registrant's name into English)

60 Rue de Wattignies 75012 Paris, France
(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 [   ]

On October 1, 2026, the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

(c) Exhibit 99.1. Press release dated October 1, 2026

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.

		Nanobiotix S.A.
		(Registrant)
Date: October 1, 2026		/s/ Bart Van Rhijn
		Bart Van Rhijn
		Chief Financial Officer

EXHIBIT 99.1

NANOBIOTIX Announces the Appointment of Arnd Christ as Chief Financial Officer

PARIS and CAMBRIDGE, Mass., Oct. 01, 2026 (GLOBE NEWSWIRE) -- NANOBIOTIX (Euronext: NANO - NASDAQ: NBTX - the “Company”), a late-stage clinical biotechnology company pioneering physics-based approaches to expand treatment possibilities for patients with cancer and other major diseases, today announced the appointment of Arnd Christ as chief financial officer and member of the Company’s executive board, effective October 1, 2026. Mr. Christ brings more than two decades of financial leadership in publicly listed biotechnology companies in Europe and the United States. He succeeds Bart Van Rhijn, who will step down as chief financial & business officer and member of the executive board after five years of service to the Company.

"Nanobiotix is at a defining point in its history, moving from a story carried primarily by one asset to one that is informed by multiple platforms," said Mr. Christ. "I look forward to joining the team and contributing my expertise to advance these promising platforms for the benefit of patients with cancer and other major diseases."

Mr. Christ has spent more than 25 years as chief financial officer of public and private biotechnology companies in Europe and the United States. He most recently served as chief financial officer of Immatics N.V., a Nasdaq-listed biotechnology company, from October 2020 until September 2025. Before Immatics he was chief financial officer of various private and public European biotech companies including InflaRx N.V., MediGene AG, NovImmune SA and Probiodrug AG, and served on the supervisory board of Immunocore. During his career, Arnd conducted a significant range of corporate transactions such as IPO, licensing deals and fundraising for private and publicly listed biotech companies.

“Arnd has overseen the financial needs of public companies in our industry on both sides of the Atlantic,” said Laurent Levy, co-founder and chairman of the executive board at Nanobiotix. “His experience comes at an important time for Nanobiotix as we enter our next phase of growth, and I am confident he will make a meaningful contribution to our continued progress. I also want to extend gratitude to Bart Van Rhijn for his leadership over the past 5 years, which helped drive the strengthening of both our financial and business foundation while positioning Nanobiotix for the opportunities ahead. On behalf of everyone at Nanobiotix, I thank Bart for his commitment to the company and wish him every success in his next chapter.”                                

^{About NANOBIOTIX}

^{Nanobiotix is a late-stage clinical biotechnology company pioneering disruptive, physics-based therapeutic approaches to revolutionize treatment outcomes for millions of patients; supported by people committed to making a difference for humanity. The Company’s philosophy is rooted in the concept of pushing past the boundaries of what is known to expand possibilities for human life.}

^{Incorporated in 2003, Nanobiotix is headquartered in Paris, France and is listed on Euronext Paris since 2012 and on the Nasdaq Global Select Market in New York City since December 2020. The Company has subsidiaries in Cambridge, Massachusetts (United States) amongst other locations.}

^{Nanobiotix is the owner of more than 30 umbrella patents associated with three (3) nanotechnology platforms with applications in 1) oncology; 2) bioavailability and biodistribution; and 3) disorders of the central nervous system.}

^{For more information about Nanobiotix, visit us at www.nanobiotix.com or follow us on LinkedIn and Twitter}

^Disclaimer

^{This press release contains “forward-looking” statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements regarding the use of proceed therefrom, and the period of time through which the Company’s anticipates its financial resources will be adequate to support operations. Words such as “expects”, “intends”, “can”, “could”, “may”, “might”, “plan”, “potential”, “should” and “will” or the negative of these and similar expressions are intended to identify forward-looking statements. These forward-looking statements which are based on the Company’ management’s current expectations and assumptions and on information currently available to management. These forward-looking statements involve known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from those implied by the forward-looking statements, including risks related to Nanobiotix’s business and financial performance, which include the risk that assumptions underlying the Company’s cash runway projections are not realized. Further information on the risk factors that may affect company business and financial performance is included in Nanobiotix’s Annual Report on Form 20-F filed with the SEC on March 31, 2026 under “Item 3.D. Risk Factors”, in Nanobiotix’s 2025 universal registration document filed with the AMF on March 31, 2026 under “chapter 1.5 Risk Factors”, and subsequent filings Nanobiotix makes with the SEC and AMF from time to time, including the Half-Year Report at June 30, 2026, which are available on the SEC’s website at www.sec.gov and on the AMF's website at www.amf.org, The forward-looking statements included in this press release speak only as of the date of this press release, and except as required by law, Nanobiotix assumes no obligation to update these forward-looking statements publicly.}

Nanobiotix
Communications Department Brandon Owens VP, Communications +1 (617) 852-4835 contact@nanobiotix.com	Investor Relations Department Joanne Choi VP, Investor Relations (US) +1 (713) 609-3150 joanne.choi@nanobiotix.com  Ricky Bhajun Director, Investor Relations (EU) +33 (0) 79 97 29 99 investors@nanobiotix.com
Media Relations
France – HARDY Caroline Hardy +33 06 70 33 49 50 carolinehardy@outlook.fr	Global – uncapped Becky Lauer +1 (646) 286-0057 uncappednanobiotix@uncappedcommunications.com

Attachment

• 2026-10-01 -- NBTX -- Arnd Christ New CFO -- FINAL (https://ml.globenewswire.com/Resource/Download/8e7eba7c-252c-4939-83f7-f2fb0120bf27)

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 PRESS RELEASE 8.8 KB