Former Financial Advisor, Jonathon Mark, Suspended by FINRA

• February 16, 2026
• Stifel Nicolaus & Company

Broker’s Background

 

Jonathon Mark Webster (CRD #: 1286778) was a previously registered broker with FINRA. He’s been previously employed with Aegis Capital Corp., Stifel, Nicolaus & Company, Incorporated, Wells Fargo Clearing Services, LLC, Citigroup Global Markets Inc., Morgan Stanley DW Inc., PaineWebber Incorporated, Shearson Lehman Hutton Inc., E.F. Hutton & Company Inc., Bateman Eichler, Hill Richards, Incorporated and Anchor National Financial Services, Inc.

 

Current and Past Allegations of Conduct Leading to Investment Loss

 

According to publicly available records released by FINRA, on January 22, 2026, Jonathon Mark Webster was sanctioned and suspended for the following conduct:

 

“Without admitting or denying the findings, Webster consented to the sanction and to the entry of findings that he willfully violated the Care Obligation of Rule 15/-1(a)(1) of the Exchange Act (Reg BI) by making recommendations to 19 retail customers, at least 13 of whom were seniors, that were not in their best interests. The findings stated that Webster recommended that the customers implement a short-term strategy that involved buying stocks in commission-based brokerage accounts rather than in the customers’ existing fee-based advisory accounts at a lower comparative cost. Collectively, Webster’s trades in the customers’ brokerage accounts required the customers to pay $121,725.58 in unnecessary commissions that the customers would not have had to pay had Webster purchased the stocks in their advisory accounts. Webster’s member firm ultimately identified his misconduct, refunded all commissions to customers, and rebilled the trades to their advisory accounts. As a result, the customers did not pay any unnecessary charges, and Webster did not retain any commissions for the trades at issue.”

 

Jonathon Mark has two prior disclosures, including a pending financial disclosure and employment termination from Stifel, Nicolaus, for allegedly placing trades in a transaction-based account that should have been placed in a fee-based account.

 

For a copy of Jonathon Mark Webster FINRA Broker Check, click here

We Help Investors Recover Investment Losses

Financial advisors have a legal and regulatory obligation to recommend only suitable investments that are appropriate for their clients’ needs and objectives. Their employing brokerage firm has a legal and regulatory obligation to supervise the Financial Advisors’ sales practices and dealings with clients. To the extent any of these duties are breached, the customer may be entitled to a recovery of his or her investment losses.

 

Reasonable basis suitability requires that a recommended investment or investment strategy be suitable or appropriate for at least some investors. Reasonable basis suitability requires an advisor to conduct adequate due diligence so that he or she can determine the risks and rewards of the investment or investment strategy.

 

Quantitative suitability requires a brokerage firm or financial advisor with actual or de facto control over a customer’s account to have a reasonable basis for believing that a series of recommended transactions – even if suitable when viewed in isolation – is not excessive and unsuitable for the customer when taken together in light of the customer’s investment profile. No single test defines excessive activity, but factors such as the turnover rate, the cost-equity ratio, and the use of in-and-out trading in a customer’s account may provide a basis for a finding that a member or associated person has violated the quantitative suitability obligation.

 

Customer-specific suitability requires that a member or associated person have a reasonable basis to believe that the recommendation is suitable for a particular customer based on that customer’s investment profile. Among the criteria that a financial advisor must evaluate to satisfy his or her customer-specific suitability obligations include the investor’s age, tax status, time horizon, liquidity needs, and risk tolerance; a client’s other investments, financial situation and needs, investment objectives, and any other information disclosed by the customer should also be considered.

 

The Wolper Law Firm represents investors nationwide in securities litigation and arbitration on a contingency fee basis. Matt Wolper, the Managing Principal of the Wolper Law Firm, is a trial lawyer who has handled hundreds of securities cases during his career involving a wide range of products, strategies, and securities. Prior to representing investors, he was a partner with a national law firm, where he represented some of the largest banks and brokerage firms in the world in securities matters. We can be reached at (855) 289-7868 or by email at mwolper@wolperlawfirm.com.