Michael Rolf Siek (CRD #2072767) Has Customer Dispute Disclosures on FINRA BrokerCheck

Michael Rolf Siek (CRD #2072767) is a broker with customer dispute disclosures on FINRA BrokerCheck. We reviewed his BrokerCheck report on May 23, 2026. It reflects eight customer disputes, including two pending disputes. If you invested with Michael Siek and have concerns, keep reading.

BrokerCheck link: BrokerCheck

BrokerCheck report: BrokerCheck Report (PDF)

Investor Disputes / Customer Complaints

Michael Siek’s FINRA BrokerCheck Report reflects eight customer dispute disclosures. Two summaries are below. Michael Siek’s FINRA BrokerCheck Report lists six additional customer dispute disclosures.

On March 30, 2026, a customer alleged Michael Siek made unsuitable investment recommendations. The claim also alleged breach of fiduciary duty, negligent supervision, and a Regulation Best Interest violation. Michael Siek’s FINRA BrokerCheck Report lists Aegis Capital Corp. as the firm and common and preferred stock as the product. The claim is pending. FINRA docket 26-00686 is listed for the matter.

On March 31, 2026, customers alleged Michael Siek made unsuitable investment recommendations. The claim also alleged breach of fiduciary duty, negligent supervision, and a Regulation Best Interest violation. The matter involves private placements. Michael Siek’s FINRA BrokerCheck Report says the claim is pending and lists FINRA docket 26-00715. The firm made a good faith determination that damages from the alleged conduct would be $5,000 or more.

Rule Summary #1: FINRA Rule 2111 (Suitability)

FINRA Rule 2111 requires a broker to have a reasonable basis for a recommendation. The broker must consider the customer’s profile, including risk tolerance, goals, and needs. Suitability disputes often ask whether the investment fit that profile.

Rule Summary #2: FINRA Rule 3110 (Supervision)

FINRA Rule 3110 requires firms to supervise associated persons. A firm must use a system reasonably designed to meet securities laws and FINRA rules. Negligent supervision claims often raise questions about how the firm reviewed recommendations.

Why This Matters to Investors (Regulation Best Interest)

Regulation Best Interest (Reg BI) is a U.S. securities regulation. It strengthens the standard of conduct that broker-dealers owe to retail investors. It applies when they recommend securities transactions or investment strategies. The U.S. Securities and Exchange Commission adopted Reg BI. It became effective on June 30, 2020. Reg BI aims to protect investors while preserving access to brokerage products and services.

Reg BI requires broker-dealers and financial advisors to act in a retail customer’s best interest at the time of a recommendation. They must not place their own financial or other interests ahead of the customer’s. This standard is higher than the older “suitability” rule. Suitability meant a recommendation only had to be appropriate. It did not have to be the best option or free of conflicts.

Reg BI has four key obligations:

Disclosure Obligation – Broker-dealers must disclose material facts about the relationship and the recommendation. This includes fees, the scope of services, and conflicts of interest.

Care Obligation – Broker-dealers must use reasonable diligence, care, and skill. They must consider costs, risks, and alternatives when making a recommendation.

Conflict of Interest Obligation – Firms must identify conflicts of interest. They must disclose them and mitigate or eliminate them. This includes conflicts that create incentives to favor one product over another.

Compliance Obligation – Firms must maintain policies and procedures. Those policies should be designed to ensure compliance with Reg BI as a whole.

Reg BI applies to each recommendation. It is not a continuous duty like the fiduciary standard for registered investment advisers. Even so, it narrows the gap. It puts more focus on costs, conflicts, and investor-focused decision-making.

Overall, Regulation Best Interest promotes transparency. It also aims to improve the quality of investment recommendations. It is designed to reinforce trust between retail investors and broker-dealers in the U.S. securities markets.

Background Information (from BrokerCheck)

Based on his FINRA BrokerCheck report, Michael Siek:

Is currently registered with Dominari Securities LLC.

Has passed the Securities Industry Essentials (SIE) exam. Michael Siek has passed Series 7 and Series 24. He has also passed Series 63.

Was previously registered with firms that include Aegis Capital Corp., Spencer Trask Ventures, Inc., and Laidlaw Equities, Inc.

Kurta Law Can Help

If you have worked with Michael Siek and have concerns about his activity, Kurta Law may be able to help. Kurta Law can evaluate your legal options. To speak with Kurta Law, call 877-600-0098 or email info@kurtalawfirm.com.

Helpful resources: Securities Attorney | Unsuitable Investments

For nearly 20 years, Kurta Law has advocated for investors and helped hold financial professionals accountable. Our firm represents clients nationwide in securities arbitration and related disputes. An attorney can review the facts if you believe a broker or firm mishandled your account. That review can help explain possible next steps.