On 25 January 2023, Lonza announced the initiation of a share buyback program of up to CHF 2 billion. The buyback program started on 3 April 2023, and is expected to be completed in H1 2025.

Share buyback announcements



Share buyback mechanism

The program is executed via a second trading line at the SIX Swiss Exchange and its implementation is subject to applicable regulatory requirements.

A shareholder wanting to sell Lonza shares may do so either via the ordinary trading line or on the second trading line. Lonza shares sold via the second trading line are subject to the Swiss federal withholding tax of 35% on the difference between the repurchase price of the Lonza share and its nominal value of CHF 1.00. This withholding tax can be reclaimed as appropriate.


Lonza registered shares second trading line (SIX Swiss Exchange)

ISIN: CH1255014495 Ticker: LONNE


Transaction reporting

Full transaction details


Maximum daily buyback volume: 33,233 shares

(calculated in accordance with Art. 123(1)(c) of the Swiss Financial Market Infrastructure Ordinance)