John Michael Legg
Professional Summary
John Michael Legg, who also goes by Mike Legg, is a registered financial advisor currently at OPPENHEIMER & CO. INC. located in Topeka, Kansas. John is registered as an IAR (Investment Advisor Representative) and RR (Registered Representative) and started their career in finance in 1980. John has worked at 3 firms and has passed the Series 65, Series 63, Series 99TO, SIE, Series 3, Series 7, Series 9, Series 10 and Series 8 exams.
At a Glance
Fiduciary Standard
Fee Structure
Account Minimum
Active Clients
Fiduciary Standard
Fee Structure
Account Minimum
Active Clients
Other Aliases
Mike Legg
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Videos & Posts
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Contact Information
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Disclosures are events reported to regulators, such as customer disputes, regulatory actions, employment separations, or financial events. Some are resolved, denied, or contested — a disclosure is not a verdict. We recommend asking an advisor directly about any disclosure on their record.
Disclosures on record.
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.
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Years of Experience
46 years registered in the securities industry
Current & Past Employments
Current
Past
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Current Firm

CAROLAN DIVISION OF OPPENHEIMER & CO. INC. | REPARIAN PARTNERS, DIVISION OF OPPENHEIMER & CO. INC. | PEARL STREET INVESTMENT MANAGEMENT , DIVISION OF OPPENHEIMER & C | OPPENHEIMER & CO. INC. | OMEGA SERVICES PROGRAM | NEWBOLD'S INVESTMENT ADVISORS | FIRST OF MICHIGAN DIVISION | FAHNESTOCK DIVISION OF OPPENHEIMER & CO. INC. | FAHNESTOCK ASSET MANAGEMENT DIVISION OF OPPENHEIMER & CO. INC. | FAHNESTOCK ASSET MANAGEMENT | FAHNESTOCK & CO., INC. | FAHNESTOCK & CO. INC. | EDWARD A. VINER & CO., INC. | CRANBROOK CAPITAL MANAGEMENT, INC.
Contact Information
Main Address
85 Broad Street 22nd Floor, New York, NY 10004Mailing Address
85 Broad Street 22nd Floor, Ny, NY 10004Phone Number
(212) 668-8000Established
New York since 12/23/1954Firm Type
CorporationFiscal Year End
DecemberFirm Size
Large# of Employees
2,806SEC notice filing (53 States and Territories)
Registered to provide investment advisory services in 53 US states and territories.
FINRA licenses (53 States and Territories)
Registered to provide investment advisory services in 53 US states and territories.
Documents
Direct owners and executive officers
| Name | Position | CRD# |
|---|---|---|
| VINER FINANCE INC. | PARENT CO. | — |
| CASSIDY, THOMAS EDWARD | MANAGING DIRECTOR/DIRECTOR | 4502955 |
| GIORDANO, PETER JOHN | MANAGING DIRECTOR-CHIEF ADMINISTRATIVE OFFICER | 2921308 |
| HARRINGTON, EDWARD PATRICK | EXECUTIVE VICE PRESIDENT - PRIVATE CLIENT SERVICES | 2566682 |
| LOWENTHAL, ALBERT GRINSFELDER | EXECUTIVE CHAIRMAN-DIRECTOR-OWNS 100% OF PHASE II FIN'L | 313519 |
| LOWENTHAL, ROBERT STEVEN | CEO-PRESIDENT-DIRECTOR | 1639913 |
| MCNAMARA, DENNIS PATRICK | E.V.P./CLO/SECRETARY | 2938486 |
| MOLOKIE JR, LEON E | EXECUTIVE VICE PRESIDENT - CHIEF OPERATIONS OFFICER | 1743402 |
| VALENTINO, DOMINIC THOMAS | CHIEF COMPLIANCE OFFICER | 6940515 |
| WATKINS, BRAD MICHAEL | DIRECTOR-EXECUTIVE VICE PRESIDENT-CFO | 6319251 |
Regulatory Assets Under Management
Total Number of Accounts
39,036AUM (Assets Under Management)
$36,710,705,748Disclosures
Regulatory Event
103Civil Event
1Arbitration
180Bond
2Accountant Surprise Examination Report
| Filing Date | Form ADV-E Cover | Form ADV-E Report |
|---|---|---|
| 02/24/2026 | Cover Page | Report |
| 01/24/2025 | Cover Page | Report |
| 10/25/2023 | Cover Page | Report |
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Other business activities
Information obtained from regulatory filings. Advisors can request corrections through their firm or regulator.
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.
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Primary Firm SEC Registration

CAROLAN DIVISION OF OPPENHEIMER & CO. INC. | REPARIAN PARTNERS, DIVISION OF OPPENHEIMER & CO. INC. | PEARL STREET INVESTMENT MANAGEMENT , DIVISION OF OPPENHEIMER & C | OPPENHEIMER & CO. INC. | OMEGA SERVICES PROGRAM | NEWBOLD'S INVESTMENT ADVISORS | FIRST OF MICHIGAN DIVISION | FAHNESTOCK DIVISION OF OPPENHEIMER & CO. INC. | FAHNESTOCK ASSET MANAGEMENT DIVISION OF OPPENHEIMER & CO. INC. | FAHNESTOCK ASSET MANAGEMENT | FAHNESTOCK & CO., INC. | FAHNESTOCK & CO. INC. | EDWARD A. VINER & CO., INC. | CRANBROOK CAPITAL MANAGEMENT, INC.
State Registrations and Notice Filings
(4/3/1991)
(1/25/1994)
(11/8/2012)
(2/5/2004)
(3/23/1990)
(7/2/2004)
(3/23/1990)
(2/4/2004)
(9/20/2016)
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.Note:This rule does not apply to broker-dealer activity.
Exams
Financial professionals may take different exams throughout their careers based on the types of services they provide and roles they perform.
Series 9 — General Securities Sales Supervisor - Options Module Examination
Passed Jan 2023About the Series 9 examSeries 10 — General Securities Sales Supervisor - General Module Examination
Passed Jan 2023About the Series 10 examSeries 8 — General Securities Sales Supervisor Examination (Options Module & General Module)
Passed May 1983SRO Registrations
SRO Registrations
SRO Registrations
SRO Registrations
SRO Registrations
SRO Registrations
SRO Registrations
SRO Registrations
SRO Registrations
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CRS (Client Relationship Summary) - RIA

OPPENHEIMER & CO. INC. — Registered Investment Advisory firm
Version Date: Tue, Mar 19, 2024
Oppenheimer & Co. Inc. (“Oppenheimer”) is a broker-dealer and an investment adviser registered with the Securities and Exchange Commission (“SEC”), and a member of the Financial Industry Regulatory Authority, Inc. (“FINRA”). Brokerage and investment advisory services and fees differ. It is important for you to understand these differences. Free and simple tools are available to research firms and financial professionals at Investor.gov/CRS, which also provides educational materials about broker-dealers, investment advisers, and investing. This summary is provided, as required by SEC rules, as part of discussions that may encompass a variety of accounts and account types. Please consider this summary, and the more detailed information you are provided, as part of these discussions.
CRS (Client Relationship Summary) - BD

OPPENHEIMER & CO. INC. — Broker-Dealer Firm
Version Date: Tue, Mar 19, 2024
Oppenheimer & Co. Inc. (“Oppenheimer”) is a broker-dealer and an investment adviser registered with the Securities and Exchange Commission (“SEC”), and a member of the Financial Industry Regulatory Authority, Inc. (“FINRA”). Brokerage and investment advisory services and fees differ. It is important for you to understand these differences. Free and simple tools are available to research firms and financial professionals at Investor.gov/CRS, which also provides educational materials about broker-dealers, investment advisers, and investing. This summary is provided, as required by SEC rules, as part of discussions that may encompass a variety of accounts and account types. Please consider this summary, and the more detailed information you are provided, as part of these discussions.
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