| Year | Detail |
| 1997 |
The company was established. |
| 1999 |
Avonmore Waterford Group rebranded its name to Glanbia plc. |
| 2003-2004 |
The company partnered with Greater Southwest Milk Agency to develop a greenfield cheese plant in New Mexico and expand its cheese plants in Idaho and Northern Ireland. |
| 2011 |
The company purchased BSN, one of the sports nutrition companies in the U.S. |
| 2013 |
The company has reshaped its business into four segments: Glanbia Performance Nutrition (GPN), Glanbia Nutritionals, Joint Ventures (including cheese operations in the U.S., U.K., and E.U.), and Glanbia Ireland. |
| 2015 |
The company acquires Think!, a lifestyle nutrition brand in California. |
| 2017 |
The company acquired two firms, Amazing Grass, a U.S. super greens brand, and Body&Fit, a direct-to-consumer channel, and added them to the GPN portfolio. |
| 2021 |
The company commissioned its new cheese and whey facility in MWC. |
| |
The company acquired PacMoore to enhance its healthy snacking capabilities. |