Haselkorn & Thibaut has opened an investigation into New York City financial advisor Mack Miller following recent regulatory actions that have raised significant concerns about his trading practices. If you’ve worked with Mr. Miller or have experienced investment losses, understanding his regulatory history and the red flags in his record can help you make informed decisions about your financial future.
Understanding Mack Miller’s Professional Background
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Mack Miller (CRD# 2822317) brings 20 years of securities industry experience to his current role at Spartan Capital Securities, where he’s been registered since 2017. Throughout his career, he’s moved through numerous firms, including:
- Dawson James Securities
- Lampert Capital Markets
- ViewTrade Securities
- Arjent LLC
- Woodstock Financial Group
- Blackbook Capital
- Coastal Equities
- John Carris Investments
- National Securities Corporation
- Legend Merchant Group
- International Assets Advisory
- Buckman Buckman & Reid
- First Merger Capital
While experience in the industry can be valuable, frequent firm changes can sometimes indicate underlying issues that investors should carefully consider.
Recent FINRA Sanctions: What Investors Need to Know
In August 2025, FINRA took disciplinary action against Mr. Miller through a Letter of Acceptance, Waiver, and Consent (No. 2018056490331). The regulatory body found that between 2019 and 2022, Mr. Miller excessively traded the accounts of two senior clients, resulting in substantial losses for these vulnerable investors.
| Client | Realized Losses | Commissions Earned by Miller |
|---|---|---|
| Senior Client 1 | $13,542 | $6,905 |
| Senior Client 2 | $57,480 | $25,325 |
These findings led FINRA to conclude that Mr. Miller violated several important regulations designed to protect investors:
- SEC’s Regulation Best Interest
- FINRA Rule 2111 (Suitability)
- FINRA Rule 2010 (Standards of Commercial Honor)
As a result, FINRA suspended Mr. Miller from working with any member firm for nine months.
Pattern of Concerning Behavior: Previous Disciplinary Action
This wasn’t Mr. Miller’s first encounter with regulatory discipline. In 2020, FINRA found that he had engaged in unsuitable trading in the account of a client who was over 79 years old and retired. The consequences of this earlier incident were severe:
- Client losses: $69,633
- Five-month suspension for Mr. Miller
- Required restitution payment of $2,500
When viewed together, these disciplinary actions reveal a troubling pattern of behavior, particularly concerning elderly and vulnerable investors.
Red Flags Investors Should Consider
Several warning signs emerge from Mr. Miller’s regulatory history that current and prospective clients should carefully evaluate:
1. Excessive Trading (Churning)
Excessive trading occurs when a broker makes numerous trades in a client’s account primarily to generate commissions, rather than to benefit the client’s investment objectives. The fact that Mr. Miller earned substantial commissions while his clients suffered losses raises serious questions about whose interests were being served.
2. Targeting Senior Investors
Both disciplinary actions involved senior clients, who may be more vulnerable to aggressive sales tactics or may have different risk tolerances and investment needs than younger investors. Repeated issues with elderly clients suggest a concerning pattern.
3. Multiple Regulatory Violations
Having two separate FINRA disciplinary actions within a few years indicates ongoing compliance issues that weren’t resolved after the first incident.
4. Significant Client Losses
The combined losses across the documented cases total over $140,000, representing real financial harm to retirees who likely couldn’t afford such setbacks.
What This Means for Current and Former Clients
If you’ve worked with Mack Miller or are currently his client, it’s crucial to:
- Review your account statements carefully for signs of excessive trading
- Calculate the commissions and fees you’ve paid versus your investment returns
- Assess whether your investments align with your stated risk tolerance and objectives
- Document any losses you’ve experienced
Remember, you have rights as an investor, and regulatory violations by your financial advisor may entitle you to recover losses through FINRA arbitration.
Steps to Protect Your Financial Future
Taking action promptly is essential if you believe you’ve been affected by unsuitable investment recommendations or excessive trading. Consider these important steps:
- Gather all relevant documentation, including account statements, trade confirmations, and correspondence
- Calculate your losses, including both realized and unrealized losses
- Seek professional legal guidance to understand your options for recovery
How Haselkorn & Thibaut Can Help
Haselkorn & Thibaut (investmentfraudlawyers.com) is a national securities fraud law firm with over 50 years of experience helping investors recover losses from broker misconduct. With a 98% success rate and millions recovered for clients, the firm operates on a contingency basis – meaning no recovery, no fee.
The firm’s investigation into Mack Miller’s activities aims to help affected investors understand their rights and explore options for recovering losses. If you’ve experienced investment losses while working with Mr. Miller or have concerns about your account activity, you don’t have to navigate this complex situation alone.
Take Action Today
Time limitations apply to investment loss recovery claims, making it crucial to act promptly. Whether you’re a current client concerned about your portfolio or a former client who suffered losses, understanding your rights is the first step toward financial recovery.
Contact Haselkorn & Thibaut today at 1-888-885-7162 for a free, confidential consultation. Their experienced team can review your situation, explain your options, and help you determine the best path forward. With their no recovery, no fee structure, you have nothing to lose and potentially much to gain by exploring your legal options.
Don’t let investment losses define your financial future. Call 1-888-885-7162 now to speak with a knowledgeable attorney who can help you understand whether you have a valid claim and guide you through the recovery process.
