William Mitchell Fenimore Iii
Professional Summary
William Mitchell Fenimore III, who also goes by William Mitchell Fenimore III, William Mitchell Fenimore, William Mitchell III Fenimore, is a registered financial advisor currently at RIVER WEALTH ADVISORS LLC located in Lancaster, Pennsylvania. William is registered as an IAR (Investment Advisor Representative) and started their career in finance in 2007. William has worked at 3 firms and has passed the Series 65, Series 63, Series 79TO, SIE and Series 7 exams.
At a Glance
Fiduciary Standard
Fee Structure
Account Minimum
Active Clients
Fiduciary Standard
Fee Structure
Account Minimum
Active Clients
Other Aliases
William Mitchell Fenimore Iii, William Mitchell Fenimore, William Mitchell Iii Fenimore
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Contact Information
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Disclosures on record.
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Years of Experience
19 years in the financial services industry
Current & Past Employments
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Current Firm
LAN CAPITAL LLC | RIVER WEALTH ADVISORS LLC
Contact Information
Main Address
100 Corporate Center Drive Suite 102, Camp Hill, PA 17011Phone Number
(717) 888-9830# of Employees
20SEC notice filing (21 States and Territories)
Registered to provide investment advisory services in 21 US states and territories.
Documents
Part 2 Brochures
Regulatory Assets Under Management
Total Number of Accounts
2,589AUM (Assets Under Management)
$1,469,312,573Similar Advisors
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Other business activities
Outside business activity is any business or activity undertaken by an advisor that is outside the scope of their relationship with their firm (e.g., consulting services, real estate, freelance work, teaching, etc.). Investors should stay informed about these activities to ensure no conflicts of interest.
The advisor shows no other business activity.
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Primary Firm SEC Registration
LAN CAPITAL LLC | RIVER WEALTH ADVISORS LLC
State Registrations and Notice Filings
(10/16/2025)
Don't see your state listed? The advisor may still be able to work with you under the federal De Minimis Rule, which allows up to five investment advisory clients in a state without registration. Some states, like TX, LA, NE, and NH, may still require registration or notice filing. Contact the advisor or their firm to confirm their investment advisory availability in your state.
Exams
Financial professionals may take different exams throughout their careers based on the types of services they provide and roles they perform.
Series 79TO — Investment Banking Registered Representative Examination
Passed Jan 2023About the Series 79TO examSimilar Advisors
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CRS (Client Relationship Summary) - RIA
Click below to view William Mitchell Fenimore III's CRS (Customer Relationship Summary).
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