| Year | Detail |
| 1897 |
The company was founded. |
| 1898 |
The Gampel 1 power station began producing carbide. |
| 1903 |
The company started working on two other carbide plants. |
| 1917 |
Lonza and the Swiss Alcohol Board signed a contract allowing the government to buy an annual alcohol volume equivalent to pre-war requirements. |
| 1917 |
The company opened a new acetylene plant in Visp. |
| 1927 |
The company began making nitric acid for fertilizers. |
| 1934 |
The company began making acetate silk. |
| 1948 |
The company acquired a 50% stake in Salanfe SA. |
| 1956 |
The company formed subsidiaries such as Airex AG. |
| 1968 |
Opened a new fertilizer plant with automated lines and expanded storage facilities. |
| 1969 |
Business expansion in the U.S. |
| 1974 |
Lonza merged with its business partner, Alusuisse. |
| 1984 |
Lonza opened a new fine chemicals complex in Visp. |
| 1992 |
Expanded into Central Europe by purchasing the Czechoslovakian State Research Institute for Biofactors and Veterinary Drugs. |
| 1996 |
The company acquired Celltech Biologics. |
| 1997 |
Lonza demerged from Alusuisse and was listed independently on the Swiss stock exchange. |
| 2019 |
Lonza signed an agreement for Ibex Solutions in Visp. |
| 2020 |
Lonza entered into a ten-year collaboration agreement with Moderna Inc. |
| 2023 |
Lonza completes the expansion of the conjugation facility in Visp. |
| 2024 |
Lonza Signs agreement to acquire large-scale biologics site in Vacaville (U.S.) from Roche. |