3 September 2025

Corero Network Security plc

("Corero" or the "Group")

Notice of Results & Investor Presentation

Corero (AIM: CNS) (OTCQX: DDOSF), the distributed denial of service ("DDoS") protection specialists, will announce its half year results for the six months ended 30 June 2025 on Tuesday, 16 September 2025.

In addition, the Company will be conducting an investor presentation covering its interim results. The online presentation will be hosted by Carl Herberger, Chief Executive Officer, and Chris Goulden, Chief Financial Officer.

This event will take place at 12.00 p.m. BST on Wednesday, 17 September 2025. The presentation will be hosted on the Investor Meet Company ("IMC") platform and is open to all existing and potential shareholders. Questions can be submitted pre-event via your IMC dashboard up until 9.00 a.m. the day before the meeting or at any time during the live presentation.

Investors can sign up to IMC for free and add to meet Corero via:

https://www.investormeetcompany.com/corero-network-security-plc/register-investor

Enquiries:

Jonathan Paterson

About Corero Network Security

Corero Network Security is a leading provider of DDoS protection solutions, delivering real-time, automated detection and mitigation with deep network visibility and analytics. Corero safeguards critical infrastructure across diverse deployment models - from inline to edge to hybrid cloud - through its SmartWallONE^TM solution and CORE, an observability and resiliency ecosystem to unify defensive actions across the modern threat landscape. With operational centres in Marlborough, Massachusetts, USA, and Edinburgh, UK, Corero is listed on the London Stock Exchange's AIM market (ticker: CNS) and the US OTCQX Market (OTCQX: DDOSF).

For more information, visit www.corero.com, and follow us on LinkedIn and X.