SSH Communications Security

Major Shareholding Notification • Sep 29, 2025

FLAGGING NOTIFICATION UNDER CHAPTER 9, SECTION 10 OF THE FINNISH SECURITIES MARKETS ACT

FLAGGING NOTIFICATION UNDER CHAPTER 9, SECTION 10 OF THE FINNISH SECURITIES MARKETS ACT

SSH Communications Security Corporation | Stock Exchange Release | September 29, 2025 at 14:00:00 EEST

SSH Communications Security Corporation has today received a notification pursuant to Chapter 9, Section 5 of the Finnish Securities Markets Act. According to the notification, the holdings of Timo Syrjälä fell below 5% of votes and shares in SSH Communications Security on 26 September 2025.

Total positions of person subject to the notification obligation:

	% of shares and voting rights	% of shares and voting rights through financial instruments	Total of both in %	Total number of shares and voting rights of issuer
Resulting situation on the date on which threshold was crossed or reached	4.87		4.87	40,968,031
Position of previous notification (if applicable)	8.30		8.30

Notified details of the resulting situation on the date on which the threshold was crossed or reached:

Class/type of shares ISIN code (if possible)	Number of shares and voting rights	% of shares and voting rights
Direct (SMA 9:5)	Indirect (SMA 9:6 and 9:7)	Direct (SMA 9:5)	Indirect (SMA 9:6 and 9:7)
FI0009008270	1,993,663		4.87
SUBTOTAL	1,993,663		4.87

Full chain of controlled undertakings through which the shares, voting rights or financial instruments are effectively held (starting with the ultimate controlling natural person or legal entity):

Name	% of shares and voting rights	% of shares and voting rights through financial instruments	Total of both
Timo Syrjälä	4.87		4.87
Acme Investments SPF Sarl	4.87		4.87

SSH Communications Security Corporation has a total of 40,968,031 shares and votes. The Company has one share series, each share entitling to one vote.

SSH COMMUNICATIONS SECURITY CORPORATION

Michael Kommonen

CFO

For further information:

Michael Kommonen, CFO, tel. +358 40 183 5836, email Michael.Kommonen@ssh.com

Markku Karppi, General Counsel, tel. +358 50 586 0552, email markku.karppi@ssh.com

Distribution:

Nasdaq Helsinki Ltd.

Major media

www.ssh.com

About SSH

SSH is a leading defensive cybersecurity company that secures communications between humans, systems, and networks. We specialize in Zero Trust Privileged Access Controls and Quantum Safe Network Security. Our customers include a diverse range of enterprises, from multiple Fortune 500 companies to SMBs across various sectors such as Finance, Retail, Technology, Industrial, Healthcare, and Government. 25% of Fortune 100 companies rely on SSH’s solutions. Recent strategic focus has expanded SSH business to Defence, Critical Infrastructure Operators, Manufacturing OT Security and Public Safety.

Leonardo S.p.A invests 20.0 million EUR in SSH, becoming the largest shareholder of the company. SSH solutions form a Center of Excellence for Zero Trust privileged access management and quantum-safe network encryption in Leonardo - a global industrial group that creates multi-domain technological capabilities in the Aerospace, Defence and Security sector with 17.8 billion EUR revenue in 2024. SSH company’s shares (SSH1V) are listed on Nasdaq Helsinki. www.ssh.com.