John Polemis Of Park Avenue Securities Charged By FINRA With Unauthorized Trading

FINRA brought an enforcement action against securities broker John Demetrios Polemis (also known as John Dimitri Polemis) [CRD: 4270012, New York City, New York], based on disclosures on Financial Industry Regulatory Authority (FINRA) BrokerCheck. Polemis worked for Park Avenue Securities LLC from April 21, 2022, to March 1, 2024, and Stirlingshire Investments from March 18, 2024, to September 5, 2024. Keep reading to learn more about disclosures involving Polemis.

FINRA Charged Polemis With Obtaining Investor Loans, Engaging In Unauthorized Trading, And Failing To Comply

Evidently, on May 13, 2026, the Financial Industry Regulatory Authority (FINRA) initiated Case No. 2024083264201 against John Polemis. Notably, FINRA alleged that Polemis improperly obtained loans from an investor, engaged in unauthorized trading, and failed to provide information requested during a regulatory investigation. Therefore, FINRA seeks sanctions against the securities broker.

Alleged Client Loan Misconduct

According to FINRA, Polemis allegedly received 20 loans totaling $28,000 from an investor between May 2022 and April 2024. FINRA alleges that Polemis represented that he would repay the funds, often within specific timeframes and sometimes with interest. The regulator contends that the funds were never repaid.

FINRA also alleges that the borrowing arrangement violated FINRA Rule 3240 because the loans were not permitted under firm policies or were not approved as required. As a result, FINRA charged Polemis with alleged violations of FINRA Rules 2010 and 3240.

Alleged Unauthorized Trading By John Polemis

FINRA further alleges that Polemis entered two trades in an investor's trust account after the investor passed away on June 1, 2024. According to the complaint, the account was not approved for discretionary trading, and no authorized person approved the transactions. FINRA alleges that the trades generated commissions and violated FINRA Rule 2010.

Alleged Failure To Respond To FINRA

The regulator also alleges that Polemis failed to provide documents and information requested through FINRA Rule 8210 requests during its investigation. FINRA contends that the requested materials related to the alleged loans, communications with the investor, and trading activity in the investor's account. FINRA charged Polemis with alleged violations of FINRA Rules 8210 and 2010. This matter is ongoing.

John Polemis Discharged For Alleged Undisclosed Client Loan

Also, Stirlingshire BD LLC disaffiliated with Polemis on August 19, 2024. Allegedly, Polemis received a client loan that was not disclosed to or approved by the firm. According to the disclosure, the firm learned from a representative that Polemis had allegedly obtained a loan from a client before joining the firm. The disclosure also states that Polemis connected a personal bank account to the client's brokerage account.

Did You Sustain Losses Because Of Securities Broker / Financial Advisor Polemis?

Are you worried about investments you made through John Polemis? Get in touch with Soreide Law Group at (888) 760-6552 or online. Speak to a securities attorney about a potential recovery of your investment losses. Soreide Law Group has recovered losses for hundreds of clients throughout the United States. Also, our securities lawyers handle cases on a contingency fee basis and advance all costs. Polemis and brokerage firms Polemis worked for deny allegations of sales practice violations.