Broker Matthew Mierzycki Suspended by FINRA for Unauthorized Trading


Matthew Thomas Mierzycki (CRD#: 6102769) is a registered broker and investment advisor at Ameriprise Financial Services, LLC., in Round Rock, TX.

Broker’s Background

He entered the securities industry in 2012 and previously worked for Edward Jones.

Current and Past Allegations Leading to Investment Loss

According to publicly available records released by the Financial Industry Regulatory Authority (FINRA), in December 2023, without admitting or denying the findings, Mierzycki consented to the sanctions and to the entry of findings that he exercised discretionary trading authority to effect trades in numerous customer accounts without first obtaining the prior written authorization of the customers. The findings stated that Mierzycki’s member firm did not approve the accounts as discretionary accounts. The findings also stated that Mierzycki failed to timely disclose compromises with creditors on his Form U4. Despite his knowledge of the compromises, Mierzycki failed to disclose them to a former firm until months after they were reportable and failed to disclose an additional compromise to his current firm for over six months.

As a result, Matthew Mierzycki has been suspended for four months starting in January, 2024. For a copy of the letter of acceptance, waiver, and consent (AWC), click here.

In addition, Matthew Mierzycki has been the subject of several other disclosures, which include the following:

  • October 2021—“Terminated due to violations of company policy in regard to discretionary orders.” He was discharged by Edward Jones.
  • June 2021— Financial disclosure for “Compromise”. The financial disclosure was satisfied.
  • February 2020—Financial disclosure for “Compromise.” The financial disclosure was settled.
  • November 2019—Financial disclosure for “Compromise.” The financial disclosure was settled.
  • March 2016—“The client alleges that the financial advisor did not properly inform her of the tax consequences associated with the liquidation of an American General annuity in January 2015.” The customer dispute was settled for $8,000.

For a copy of Matthew Mierzycki’s FINRA BrokerCheck, click here.

We Help Investors Recover Investment Losses

FINRA regulations require that a customer’s written authorization is required before a broker-dealer can carry out transactions in the customer’s account. In addition, the broker-dealer’s member firm needs to approve the broker-dealer’s authorization. These measures are intended to protect the customer. Discretionary trading allows the broker-dealer to unilaterally decide to buy or sell securities at any price and not have to check with the client first. Exercising discretion without authorization can be costly to investors, and broker-dealers and their member firms, too.


In addition, to the extent a Financial Advisor converts client assets during the course and scope of his employment and/or registration with the brokerage firm, that brokerage firm may be held liable for any attendant losses.


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 (800) 931-8452 or by email at mwolper@wolperlawfirm.com.

Attorney Matthew Wolper

Attorney Matthew WolperMatt Wolper is a trial lawyer who focuses exclusively on securities litigation and arbitration. Mr. Wolper has handled hundreds of securities matters nationwide before the Financial Industry Regulatory Authority (FINRA), American Arbitration Association (“AAA”), JAMS, and in state and federal court. Mr. Wolper has handled and tried cases involving complex financial products and strategies ranging from traditional stocks and bonds to options, margin and other securities-based lending products, closed/open-end mutual funds, structured products, hedge funds, and penny stocks. [Attorney Bio]