Dean Matthew Sylvester
Investment Adviser Representative at LPL Financial LLC
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Dean Matthew Sylvester is an investment adviser representative with LPL Financial LLC in Plympton, MA, where they have been registered since 2025. They have worked in the securities industry since 2002 and were previously registered with Commonwealth Financial Network. They have passed 4 industry qualification exams, including the Series 66 (combined investment adviser and state securities agent), Series 7 (general securities representative), and Series 63 (state securities agent). They are registered to provide investment advice in Massachusetts and Texas.
Registrations & licenses
- Investment adviser:
- Massachusetts, Texas
- Broker:
10 states and territories
Connecticut, Florida, Maine, Massachusetts, New Hampshire, New York, Ohio, Oregon, Texas, Vermont
Registration requirements vary by state and service. Contact the advisor's firm to confirm whether they can serve you.
Financial-firm registration history
Registration history as reported to FINRA, most recent first.
Reported employment history
Employment the advisor reported on their SEC/FINRA filings, as of October 8, 2026. It may not be a complete history.
- Commonwealth Financial NetworkAug 2001 – Jan 2022Waltham, MA
- Lighthouse Investment Group, Inc.Mar 2003 – Jan 2022Marshfield, MA
- Commonwealth Financial NetworkJan 2022 – Feb 2025Waltham, MA
- Lighthouse Investment Group, Inc.Jan 2022 – Apr 2025Marshfield, MA
- LPL Financial LLCFeb 2025 – Apr 2025Marshfield, MA
- Lighthouse Investment South ShoreApr 2025 – no end date reportedPlympton, MA
- LPL Financial LLCApr 2025 – no end date reportedPlympton, MA
Official records & sources
Data as of August 9, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About LPL Financial LLC
These details describe the firm overall. Individual advisors' services, clients, and fees may differ.
Fee arrangements the firm reports
- Percentage of assets under management
- Hourly
- Fixed fee
Arrangements the firm reports on its Form ADV; this advisor may not charge every fee listed. Estimated from the firm's Form ADV — individual terms may differ. Not a quote.
Services the firm offers
Client types the firm serves
Firm assets under management
$25B+
- Firm disclosures (Form ADV)
- Disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 24,114
- Offices listed on AdvisorFinder:
- 25
- Main office:
- Fort Mill, SC
- SEC file number:
- 801-10970
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of September 21, 2026
View full firm profileOther advisors at LPL Financial LLC
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This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. Dean Matthew Sylvester has not reviewed, approved, or endorsed this profile and is not responsible for its accuracy. Regulatory records change over time — always verify the current record directly on BrokerCheck or SEC.gov before making any decision. AdvisorFinder may be compensated for referrals generated through this page.
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