<img src="https://ml-eu.globenewswire.com/Resource/Download/3dac9814-6d18-4cd2-adeb-43fa0e0a9c8d?size=2" nborder="0" align="left" hspace="5" vspace="5" title="NEURONES" alt="NEURONES"/>Nanterre, May 26, 2026 Declaration of transactions on treasury shares (period from May 18 to 22, 2026) As part of the share buyback program authorized by the General Meeting of June 5, 2025 and entrusted to CIC, NEURONES made the following purchases between May 18 and 22, 2026 (ISIN code FR0004050250): <table style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; border-collapse: collapse; width:100%; border-collapse:collapse ;"><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: top ; ">Day</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: top ; ">Total daily volume (in number of shares)</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: top ; ">Weighted average price (unit daily)</td></tr><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: middle ; ">05/18/2026</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">2,310</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">€38.06</td></tr><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: middle ; ">05/19/2026</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td></tr><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: middle ; ">05/20/2026</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td></tr><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: middle ; ">05/21/2026</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td></tr><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: middle ; ">05/22/2026</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">-</td></tr><tr><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: center ; vertical-align: middle; vertical-align: middle ; ">Total</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; ">2,310</td><td style="border-top: solid black 1pt ; border-right: solid black 1pt ; border-bottom: solid black 1pt ; border-left: solid black 1pt ; text-align: right ; vertical-align: middle; vertical-align: middle ; "> </td></tr></table> As of May 22, 2026, excluding the liquidity contract, NEURONES now holds 445,746 of the 24,328,716 shares comprising the company's capital (i.e., 1.83%). All press releases relating to the share buyback program are published in the "Regulated Information" section (under "Weekly declarations of the share buyback transactions" and "Share buyback programs") of the company's website. About NEURONES With 7,400 experts, and ranking among the French leaders in management consulting and digital services, NEURONES helps large companies and organizations with their digital projects, IT infrastructures transformation and AI adoption. Euronext Paris (compartment A - NRO) – Euronext Tech Leaders – DSS – PEA-PME eligible <a href="https://www.globenewswire.com/Tracker?data=_VZFmcZfJvr0K7BvmmhdBPyEkMNPMIa0fKJn3uaKfaC7KlAPpUMR2RKhcWdkjtoz10f3LbtSxRcDMCMCiH8S09yldYGqHGWJyBpMr56AFYU=" rel="nofollow" target="_blank" title="www.neurones.net">www.neurones.net</a> <table style="border-collapse: collapse; width:100%; border-collapse:collapse ;"><tr><td style="text-align: left ; vertical-align: middle; vertical-align: top ; ">Press Relations: O'Connection Julia Philippe-Brutin Tel.: +33 (0)6 03 63 06 03 <a href="mailto:jpbrutin@oconnection.fr" rel="nofollow" target="_blank" title="jpbrutin@oconnection.fr">jpbrutin@oconnection.fr</a> </td><td style="text-align: left ; vertical-align: middle; vertical-align: top ; "> NEURONES Matthieu Vautier Tel.: +33 (0)1 41 37 41 37 <a href="mailto:rp@neurones.net" rel="nofollow" target="_blank" title="rp@neurones.net">rp@neurones.net</a> </td><td style="text-align: left ; vertical-align: middle; vertical-align: top ; ">Investor Relations: NEURONES Paul-César Bonnel Tel.: +33 (0)1 41 37 41 37 <a href="mailto:investisseurs@neurones.net" rel="nofollow" target="_blank" title="investisseurs@neurones.net">investisseurs@neurones.net</a> </td></tr></table> 
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NEURONES: Declaration of transactions on treasury shares (May 18 to 22, 2026)

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