InsingerGilissen was established in 2017 when Insinger de Beaufort and Theodoor Gilissen merged. These two companies were originally private banks from Amsterdam with rich histories that date back to 1779 and 1881 respectively.
Insinger de Beaufort
- 1779: Founded by Herman Albrecht Insinger and Paulus Prins
- 1976: Merger with Willems & Cie
- 2009: Partnership with BNP Paribas and merger with Nachenius Tjeenk
- 2017: Acquired by KBL epb
Theodoor Gilissen
- 1881: Founded by Theodoor A.J. Gilissen
- 1967: Part of Bank Mees en Hope Iater Mees Pierson
- 2003: Acquired by KBL epb
- 2005: Merger with securities firm Stroeve
InsingerGilissen
- 2020: KBL epb changes its name to Quintet Private Bank.
- 2020: InsingerGilissen becomes a branch of Quintet Private Bank (Europe) S.A.