Posting of Report & Accounts & Notice of AGM

22 December 2025

Plexus Holdings PLC

(the "Company")

 Posting of Report & Accounts & Notice of AGM

Plexus Holdings PLC (AIM: POS), the AIM quoted wellhead services business, is pleased to announce that its Annual Report and Accounts, Notice of Annual General Meeting ('AGM') and Form of Proxy were posted to shareholders today and are available on the Company's website: www.plexusplc.com.

The AGM will be held at the offices of Plexus Ocean Systems Limited at Plexus House, Burnside Drive, Dyce, Aberdeen AB21 0HW on Friday 16 January 2026 at 11.00 a.m.

ENDS

For further information please visit www.plexusplc.com or contact:

NOTES

Plexus Holdings plc (AIM: POS) is an IP-led company specialising in developing and providing wellhead systems and associated products and services for offshore operations.

Headquartered in Aberdeen, the company focuses on providing wellheads for Jack-up rig operations such as exploration and appraisal drilling, Plug & Abandonment work and emerging markets for Carbon Capture & Storage, hydrogen production and storage and geothermal. Plexus has a collaboration agreement with SLB to supply Exact adjustable wellhead systems for Jack-up applications and supports these operations with a range of proprietary equipment and tools, and project engineering services.

Plexus is known for its highly innovative POS-GRIP® wellhead technology and HG® metal-to-metal sealing systems, for which licences have been sold to major industry players such as SLB and TechnipFMC for limited applications. Plexus continues to develop products based on POS-GRIP technology for challenging surface production wellhead platforms, special projects and connector and subsea applications such as the Python® subsea wellhead system.

Plexus has always been at the forefront of innovation to reduce risk and improve performance in the energy industry, such as developing through-BOP wellhead systems which help to prevent blow-outs, and POS-GRIP "HG" Seals which are leak-free throughout field life and so reduce methane emissions and minimise maintenance costs. These innovations support the oil and gas industry's ESG and NetZero, and in recognition of this, Plexus was Awarded the London Stock Exchange's Green Economy Mark in 2021.

For more information visit: https://www.plexusplc.com/