Mariel Diana Mendelsohn
Investment Adviser Representative at LNW
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Mariel Diana Mendelsohn is an investment adviser representative with LNW in Seattle, WA, where they have been registered since 2023. They have worked in the securities industry since 2020 and were previously registered with Ameriprise Financial Services, LLC. They have passed 3 industry qualification exams, including the Series 66 (combined investment adviser and state securities agent) and Series 7 (general securities representative). They are registered to provide investment advice in California and Washington.
Office
Advisors at this office: 33
Branch office as filed with FINRA, counting current advisors in the directory who work there.
Registrations & licenses
- Investment adviser:
- California, Washington
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.
- Ameriprise Financial Services, LLCMay 2019 – Nov 2023Roseville, CA
- Bangerter FinancialApr 2018 – May 2019Citrus Heights, CA
- Northwestern MutualJan 2017 – Apr 2018Sacramento, CA
- California State University SacramentoJul 2014 – May 2017Sacramento, CA
- Wetherby Asset ManagementNov 2023 – Dec 2023San Francisco, CA
- Laird Norton Wetherby Wealth Management, LLCJan 2024 – Dec 2025San Francisco, CA
- Laird Norton Wetherby Wealth Management, LLCJan 2026 – no end date reportedSan Francisco, CA
Official records & sources
Data as of August 10, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About LNW
These details describe the firm overall. Individual advisors' services, clients, and fees may differ.
Fee arrangements the firm reports
- Percentage of assets under management
- 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
$5B–$25B
- Firm disclosures (Form ADV)
- No disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 57
- Offices listed on AdvisorFinder:
- 5
- Main office:
- Seattle, WA
- SEC file number:
- 801-36445
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of March 31, 2026
View full firm profileOther advisors at LNW
Showing 12 of 57 in the directory
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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. Mariel Diana Mendelsohn 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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