Investor Alert: Broker Mack Leon Miller (CRD#: 2822317)
MACK LEON MILLER – also known as Mack Miller or Mark Miller – CRD#: 2822317
If you invested with Mack Leon Miller, you may have legal options to recover your investment losses. Investors should be aware of serious concerns related to Miller’s conduct as a financial advisor.
Who Is Mack Leon Miller?
Mack Leon Miller (CRD#: 2822317), sometimes referred to as Mack Miller or Mark Miller, has been registered with multiple broker-dealer firms during his career in the securities industry. As with any broker, FINRA and the SEC require that customer complaints, disputes, and regulatory actions be disclosed on an advisor’s public record.
Investors who have dealt with Miller should carefully review their accounts and confirm whether investment recommendations were appropriate for their financial needs and objectives.
FINRA Suspends Miller
Without admitting or denying the findings, Miller consented to the sanctions and to the entry of findings that he willfully violated the Best Interest Obligation under Rule 15/-1(a)(1) of the Securities Exchange Act of 1934 (Reg Bl) when he recommended to two customers, both of whom were seniors, a series of trades that were excessive, unsuitable, and not in the customers’ best interests. The findings stated that Miller’s trading generated $32,230 in commissions and resulted in $71,022 in realized losses. One of the customers relied on Miller’s advice and routinely followed his recommendations, and, as a result, Miller exercised de facto control over that customer’s account. Miller consented to a 9 month suspension.
Why Investors Should Be Concerned
If your broker recommended unsuitable investments, failed to disclose risks, engaged in excessive trading, or committed other potential violations of securities laws, you may have grounds to pursue a claim for recovery through FINRA arbitration.
Red flags for potential misconduct can include:
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Unsuitable investment recommendations
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Misrepresentation or failure to disclose risks
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Overconcentration in risky securities
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High-fee or illiquid private placements
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Unauthorized or excessive trading
Your Rights as an Investor
Brokerage firms are required by law to supervise their advisors. If an investor suffers losses due to broker misconduct or negligence, the firm can often be held liable for those losses.
If you worked with Mack Leon Miller (CRD#: 2822317) and believe you lost money because of unsuitable investment recommendations, you may be able to file a claim.
Contact Goodman & Nekvasil, P.A.
The securities attorneys at Goodman & Nekvasil, P.A. have extensive experience representing investors nationwide who have suffered financial losses due to broker misconduct.

Investor Alert: Broker Mack Leon Miller (CRD#: 2822317)
Goodman & Nekvasil, P.A., is investigating brokers who may have unsuitably recommended investments to its clients.
St. Petersburg, Florida law firm Goodman & Nekvasil, P.A., has a national practice representing victimized investors. The firm continues to investigate brokerage firms that placed elderly retirees and other conservative investors in unsuitable investments.
Goodman & Nekvasil, P.A., has filed numerous cases against brokerage firms selling high-risk investments and has recovered more than $500 million dollars on behalf of victimized investors.
We allege in these cases that these investment recommendations were unsuitable for our clients in view of their financial situation, needs and investment objectives.
There is no charge for an evaluation of your case. We handle our cases on a contingency fee basis. This means that unless we recover money for you, we charge no attorney’s fee.
If you incurred losses on your investment and would like your case evaluated by a securities attorney, please contact us.
Some of the information in this blog post was obtained from FINRA on 8/19/25. If you believe this information was reported incorrectly, please contact our firm: 1-800-500-4442.