Reference is made to the stock exchange announcement published by Airthings ASA
(the "Company") on 11 September 2025 regarding the successful completion of a
fully underwritten NOK 105 million capital injection through a NOK 80 million
private placement (the "Private Placement") of new shares (the "New Shares")
followed by a NOK 25 million subsequent offering (the "Subsequent Offering"). 

The share capital increase pertaining to the Private Placement has now been
registered with the Norwegian Register of Business Enterprises. Following the
registration, the Company's new share capital is NOK 9,993,018.46, divided on
999,301,846 shares, each with a nominal value of NOK 0.01.

As a result of the issuance and subsequent delivery of the New Shares, Firda AS
("Firda") holds 416,570,184 shares in the Company, representing approximately
41.69% of the outstanding shares and votes. As stated in the announcement of 11
September 2025, and under Chapter 6 of the Norwegian Securities Trading Act,
Firda has with this triggered an obligation to make a mandatory offer for the
remaining shares in the Company not already owned by it at NOK 0.10 per share
(the highest price paid by it the last six months). Firda has confirmed that it
will make such offer as soon as practicably possible, following approval by
Finanstilsynet of the offer document. As stated in previous announcements, the
underwriters and subscribers in the Private Placement have all undertaken not to
accept such mandatory offer for any shares held by them. 

This information is published in accordance with disclosure requirements of the
Euronext Oslo Rule Book II and section 5-12 of the Norwegian Securities Trading
Act.