Below are key milestones in our history:
| 1922 | Charles P. White and Percival S. Page open an accountancy practice in the Philippines called White, Page & Co. |
| 1948 | After the war, a new partnership is formed under Stewart, Dacanay, Cunanan & Co. |
| 1951 | The company name changes to Stewart, Cunanan & Co. |
| 1956 | Joaquin Cunanan becomes the first Filipino senior partner of the company. |
| 1958 | The company is designated as Price Waterhouse correspondent in the Philippines. |
| 1962 | The company inaugurates its Management Advisory, then Tax Services. |
| 1964 | The company name changes to Joaquin Cunanan & Co. |
| 1970 | Jose Florento becomes senior partner. |
| 1973 | The company becomes a member of Price Waterhouse International. |
| 1975 | The company opens its Cebu branch office. |
| 1981 | Corazon de la Paz-Bernardo becomes chairman and senior partner; also becomes Price Waterhouse's first lady senior partner worldwide. |
| 1982 | The company celebrates its 60th anniversary. |
| 1985 | Joaquin Cunanan is elevated to the Accountancy Hall of Fame |
| 1997 | The company celebrates its 75th anniversary. |
| 1998 | Price Waterhouse merges globally with Coopers & Lybrand to create PricewaterhouseCoopers (PwC) |
| 2001 | Jerry Isla becomes chairman and senior partner |
| 2002 | The company celebrates its 80th anniversary |
| 2005 | The company name changes to Isla Lipana & Co. |
| 2006 | Tammy Lipana becomes chairman and senior partner. |
| 2007 | WE are 85! Wisdom and experience |
| 2009 | Judith V. Lopez is elected chairman and senior partner |
| 2012 | The company celebrates its 90th anniversary |