Sean P. Siehl
Professional summary
Sean Preston Siehl is a registered financial professional currently at CASTLE PLACEMENT, LLC located in Syosset, New York.
Sean is registered as a RR (Registered Representative) and started their career in finance in 2019. Sean has worked at 1 firm and has passed the Series 63, SIE and Series 7TO exams.
Question & Answer
Aliases
Other business activities
CRS (Client Relationship Summary) - BD
Click below to view Sean Preston Siehl's CRS (Customer Relationship Summary).
Certified licenses
Experience
December 8, 2025 - Present
CASTLE PLACEMENT, LLC
Office #1: 527 Split Rock Rd Oyster Bay Cove, Syosset, NY 11791October 8, 2019 - June 28, 2021
CASTLE PLACEMENT, LLC
State Registrations and Notice Filings
Listed states reflect where the advisor is authorized to serve clients under state regulations.
Visual representation of state registrations
(12/21/2025)
(12/9/2025)
Exams
Series 7TO
Date: 12/8/2025
General Securities Representative ExaminationFINRA
Current Firm
CASTLE PLACEMENT, LLC
CRD#: 189511 / SEC#: , 8-69612
Contact information
FINRA licenses (52 States and Territories)
Red Flags
Disclosures can be potential red flags, including customer disputes, regulatory fines, employer terminations, bankruptcies, judgments, liens, or certain criminal activities.
Check for any disclosures as part of your thorough research when choosing an advisor.