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Organizational Chart of Sienna Gestion
Sienna Gestion Org Chart
sienna-gestion.com
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4 executives
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Sienna Investment Managers
+33 156 033 456
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CEO
Xavier Collot
Listed & Hybrid Assets @ Sienna Investment Man...
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COO
Cecile Haaser
COO, Listed Assets @ Sienna Investment Managers
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Investment
D...
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Risk & Compliance
J...
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Updated Mar 11, 2026
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