HALF YEAR RESULTS FOR THE PERIOD ENDED 30 JUNE 2026

Itaconix plc

("Itaconix" or the “Company”)

HALF YEAR RESULTS FOR THE PERIOD ENDED 30 JUNE 2026

Strong revenue growth and break-even adjusted EBITDA

Itaconix plc (AIM: ITX) (OTCQB: ITXXF), a leading innovator in high-performance plant-based specialty polymers used in everyday consumer products such as homecare detergents, announces its unaudited interim results for the six months ended 30 June 2026.

Financial Summary

¹Adjusted for interest, tax, depreciation, amortisation, share-based payment charge and exceptional items. Adjusted EBITDA is defined and reconciled to Operating Loss in Note 4 of the Interim Report.

Commenting on the results John R. Shaw, CEO of Itaconix, said:

“Our half year results are major milestones for our commercial progress, our revenue potential, and our use of cash. We generated our fourth consecutive half of growth to achieve record revenues and break-even adjusted EBITDA whilst still investing in new long-term revenue opportunities. Our plant-based performance ingredients are enabling new generations of everyday consumer products in EMEA and North America. Our SPARX™ Formulated Solutions programme is accelerating the speed and ease of brands adopting our ingredients in North American unit-dose detergents.

Our operations team is meeting our increased demand and improving production throughput to meet our medium-term $30 million revenue goal. We are also making progress on new revenue potential in paint applications and the uses for our polymers in agriculture. Our focused investment in customer relationships, new products, and production capabilities is generating reoccurring revenues that will propel our growth, profitability, and company value. We expect strong financial performance for FY 2026 with a small positive EBITDA and cash to support our next stage of development. We continue to monitor and manage the potential impact of global conflicts and trade issues on our business, but these have been limited to date. Our aim is to become a large, profitable speciality ingredients company and we are on our way.”

First half financial highlights

• Total revenue of $8.3 million, up 72% vs H1 2025
  • Itaconix® Performance Ingredients (81% of Group revenue): +104% growth driven by strong reorder volumes and two new large detergent customers in EMEA and North America
  • SPARX^TM Formulated Solutions (19% of Group revenue): +3.3% growth reflecting increased use of our formulations by brands in North America to produce solid unit-dose dish and laundry detergents at contract manufacturers
  • BIO*Asterix®: remains pre-revenue stage as we continue to advance the potential of our proprietary plant-based paints
• Total gross profit of $3.0 million, up 74% (H1 2025: $1.7 million); gross profit margin of 35.6% (H1 2025: 35.1%), broadly stable and reflecting the mix of business segments and products. Itaconix® Performance Ingredients achieved $2.8 million of gross profit with a 41% gross margin, and SPARX^TM Formulated Solutions delivered incremental gross profit to the Group of $0.2 million with a gross margin of 12%
• Break-even adjusted EBITDA¹ (H1 2025: $(0.2) million), with continued investment in customer, application, product and production capacity to generate further revenue growth
• Cash and investments of $5.1 million ($4.4m million as at 31 December 2025), reflects reduction in working capital from planned adjustments to raw materials and finished goods inventories

First half operational highlights

• Progress in the period demonstrates increasing commercial traction for our multi-functional scale inhibitors and odour neutralisers in both North America and EMEA solid unit-dose detergent markets. Customers increasingly value the performance efficacy, cost benefit, and environmental advantages of Itaconix plant-based polymers:

• • The “land and expand” revenue strategy delivered major growth in the period from existing customers re-ordering increasing or steadier volumes
  • New revenues were generated from one major new detergent customer in EMEA and one new large detergent customer in North America
  • New SPARX^TM Formulated Solutions initiatives are generating and accelerating new customer opportunities; introduced our 8-gram plastic-free tablet at the American Cleaning Institute’s Innovation Showcase in February 2026 and launched deeperclean.com ecommerce site
  • Expected growth from existing customers and a strong pipeline of new customer opportunities gives us continued confidence in reaching $30 million of detergent revenues in the medium term

• We advanced the development of our BIO*Asterix® business with a patent filing on plant-based paints, a trademark filing for plant-based paints, and collaborations with leading companies in the paint industry to optimize and produce potential paint offerings
• We continued to invest in new research and innovation to expand our revenue potential and the breadth of our proprietary technology base:
  • We advanced the development of a potential new scale inhibitor polymer to the prototype stage to evaluate environmental profiles, field performance, production costs, market potential, and intellectual property protection.
  • We initiated an evaluation of the commercial potential for Itaconix polymers in agriculture with field trials of BioVail™ GRZ™ 200L for improving the uptake of plant nutrients in major US row crops.
  • We filed new patents on paint and unit-dose dish detergent formulations and successfully challenged an EU detergent formulation patent that overlapped with an existing Itaconix patent.

Outlook

We are very pleased with our first half progress and expect momentum in Itaconix® Performance Ingredients to remain strong, supported by reoccurring revenues and growing demand in unit-dose detergent markets. While re-order rates take time to firmly establish, customers clearly recognise the efficacy, environmental advantages and cost benefits of Itaconix plant-based polymers. We are balancing investment in future growth with current revenue generation and remain confident in achieving our recently upgraded FY 2026 revenue guidance of at least $14.8 million and a small positive EBITDA.

With production capacity and resources in place to meet growing demand, we are focused on achieving $30 million revenue in the medium term by expanding our volumes with existing customers and landing new accounts from our current new customer pipeline. We remain excited about opportunities to grow beyond $30 million revenue in the long term with new applications for our polymers in additional markets including paints and agriculture.

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A live virtual presentation will be held on 9 September 2026 at 14:00 BST. This presentation is open to all interested parties. Anyone can sign up for free to the Investor Meet Company platform and join the live presentation via: https://www.investormeetcompany.com/itaconix-plc/register-investor

A copy of the Interim Report & Accounts is available for download on Itaconix’s website at www.itaconix.com.

For further information please contact: