Charles Héaulmé has reported to have made transactions with Suominen Corporation's shares. The transactions are presented below as a summary, and in detail as per the disclosure requirement.

Acquisitions onJune 4, 2026:

• Total amount 2546 shares
• Volume weighted average price: 1.05 EUR

Suominen Oyj - Managers' Transactions
____________________________________________
Person subject to the notification requirement
Name: Charles Héaulmé
Position: Chief Executive Officer
Issuer: Suominen Oyj
LEI: 743700Z1BNFYR9PRDF52
Notification type: INITIAL NOTIFICATION
Reference number: 160609/5/4

____________________________________________
Transaction date: 2026-06-04
Venue: NASDAQ HELSINKI LTD (XHEL)
Instrument type: SHARE
ISIN: FI0009010862
Nature of transaction: ACQUISITION

Transaction details
(1): Volume: 2546 Unit price: 1.05 EUR

Aggregated transactions (1):
Volume: 2546 Volume weighted average price: 1.05 EUR

SUOMINEN CORPORATION

For more information, please contact:
Kimmo Raunio, CFO, Suominen Corporation, tel +358 (0)40 593 6854

Suominen manufactures nonwovens as roll goods for wipes and other applications. Our vision is to be the frontrunner for nonwovens innovation and sustainability. The end products made of Suominen’s nonwovens are present in people’s daily life worldwide. Suominen’s net sales in 2025 were EUR 412.4 million and we have almost 700 professionals working in Europe and in the Americas. Suominen’s shares are listed on Nasdaq Helsinki. Read more at www.suominen.fi.