Gaithersburg, MD | January 14, 2026
Gaithersburg financial advisor Diana Leon (CRD# 4857407) has two disclosures on her FINRA BrokerCheck record: a 2015 termination from Merrill Lynch for allegedly making inaccurate entries in an internal account review tracking system, and a 2025 denied complaint involving callable structured notes. According to FINRA records, Leon was discharged from Merrill Lynch on April 20, 2015, for “conduct involving making inaccurate entries of required account reviews in an internal tracking system.” More recently, a customer filed a FINRA arbitration case in September 2025 alleging that callable note purchases totaling $50,000 were not in keeping with the customer’s needs and objectives. The firm denied the complaint as being without merit. Leon currently works as a registered representative with OSAIC Wealth, Inc. in Gaithersburg, Maryland, a position she has held since January 2024.
Leon has been in the securities industry since 2009 and is registered as both a broker and Investment Adviser Representative. Her career includes positions at major firms including Merrill Lynch, Capital One, and Woodbury Financial Services before joining OSAIC Wealth.
BrokerCheck Snapshot
Name: Diana M. Leon
CRD #: 4857407
Firm: OSAIC Wealth, Inc.
Location: Gaithersburg, MD
Years in Industry: 17+
Number of Disclosures: 2 (1 terminated employment, 1 denied customer complaint)
Denied Customer Complaint – Structured Notes
FINRA Case #25-01883
Date Filed: September 8, 2025
Firm: OSAIC Wealth, Inc.
Status: Denied (August 14, 2025)
Allegations: Customer alleged that callable note purchases were not in keeping with her needs and objectives.
Product Type: Structured Note (Callable)
Alleged Damages: $5,000 (claim seeks return of $50,000 original investment)
Settlement: $0.00 (Denied)
According to Leon’s statement in the BrokerCheck report: “The customer initiated an arbitration claim after the Firm denied her complaint as being without merit.”
The complaint was denied by OSAIC Wealth, and no payment was made to the customer. Despite being denied, the complaint remains on Leon’s permanent BrokerCheck disclosure record.
Pattern of Complaints / Risk Factors
While each case is unique, complaints involving structured notes and callable securities may indicate concerns related to product complexity explanations, risk disclosure practices, and suitability assessments for conservative investors. Investors should carefully review account statements and seek legal guidance if similar issues occurred.
Understanding Structured Notes and Callable Features
The customer complaint against Leon specifically involves “callable notes” – a type of structured product with unique characteristics that many investors don’t fully understand:
What Are Structured Notes?
Structured notes are debt securities issued by financial institutions that combine:
- A bond component (debt obligation)
- A derivative component (typically tied to stocks, indices, or other assets)
- Complex payout structures based on underlying performance
What Does “Callable” Mean?
A callable note gives the issuer the right to redeem (call back) the note before maturity, typically when:
- Interest rates have fallen
- The issuer can refinance at lower rates
- Specific market conditions are met
Why Callable Structured Notes Can Be Problematic:
- Issuer advantage, investor disadvantage – The call feature benefits the issuer, not the investor
- Reinvestment risk – If called early, investors must reinvest proceeds potentially at lower rates
- Limited upside potential – Callable notes often cap potential gains
- Complexity – Many investors don’t understand when and why notes might be called
- Illiquidity – Secondary market for structured notes is typically limited
- Credit risk – Dependent on issuer’s financial strength
- Potential principal loss – Despite being “notes,” principal may not be protected
Suitability Concerns:
Callable structured notes are often unsuitable for investors who:
- Need predictable income streams
- Want principal protection
- Don’t understand complex derivative structures
- Have conservative risk tolerances
- Need liquidity or flexibility
- Can’t afford to lose principal
The allegation that the callable notes were “not in keeping with her needs and objectives” suggests the customer may have been sold a complex product that didn’t match her investment profile.
Termination from Merrill Lynch – Account Review Documentation
Employment Separation After Allegations
Employer: Merrill Lynch, Pierce, Fenner & Smith Incorporated
Termination Type: Discharged
Termination Date: April 20, 2015
Location: Potomac, MD
Reason for Termination:
“Conduct involving making inaccurate entries of required account reviews in an internal tracking system.”
Leon’s Response:
In her statement, Leon disputed Merrill Lynch’s conclusions:
“I was informed by Merrill Lynch that it believed that I had not been meeting with clients by telephone or in person for account reviews because some of the meetings were not recorded. Merrill Lynch also believed that the notes of some client meetings were boilerplate. I dispute these erroneous conclusions. I scheduled and held account review meetings with clients on a regular basis as specified by Merrill Lynch. There was no firm policy or rule that meetings had to be recorded. I inputted notes of meetings into Merrill Lynch’s internal tracking system using a template I developed several years ago which helped me to address the benchmark issues desired by Merrill Lynch to be covered with my clients. All of my compliance reviews were completed on a timely basis.”
The Significance of This Termination:
While Leon disputes Merrill Lynch’s characterization, the termination is classified as “Employment Separation After Allegations” – a disclosure category that indicates the broker was accused of:
- Violating investment-related statutes, regulations, rules, or industry standards
- Fraud or wrongful taking of property, OR
- Failure to supervise
This type of termination is a red flag on a broker’s record, even when the broker disputes the allegations. The fact that Merrill Lynch felt the conduct warranted termination rather than lesser discipline suggests the firm viewed the matter seriously.
The Importance of Client Account Review Documentation
The reason for Leon’s termination – alleged inaccurate entries in an account review tracking system – highlights critical compliance obligations:
Why Account Reviews Matter:
- Regulatory requirement – FINRA rules require firms to monitor accounts
- Suitability updates – Client circumstances change over time
- Risk assessment – Regular reviews help ensure investments remain appropriate
- Documentation trail – Proves broker fulfilled supervisory obligations
- Investor protection – Reviews catch potential problems early
Why Accurate Documentation Matters:
- Firms rely on review notes to supervise brokers
- Regulators review documentation during examinations
- Inaccurate or “boilerplate” notes may hide problems
- False documentation can constitute fraud
- Proper notes protect both investors and brokers
The Debate Over “Boilerplate” Notes:
Leon’s statement indicates she used “a template I developed several years ago which helped me to address the benchmark issues desired by Merrill Lynch to be covered with my clients.”
The tension between efficiency and authenticity in client review notes is common:
- Firm perspective: Repetitive, template-based notes suggest broker isn’t conducting genuine reviews
- Broker perspective: Templates ensure all required topics are covered consistently
- The issue: When does a helpful template become misleading “boilerplate”?
Merrill Lynch apparently concluded Leon’s notes crossed the line from template-assisted to inaccurate or misleading.
About Diana M. Leon’s Background
According to FINRA records, Diana M. Leon has been in the financial services industry since 2009 – more than 17 years. Her employment history includes:
Current Position:
- OSAIC Wealth, Inc. (January 2024 – Present) – Registered Representative, Gaithersburg, MD
Previous Firms:
- Woodbury Financial Services, Inc. (July 2018 – January 2024) – Registered Representative, Gaithersburg, MD
- LPL Financial LLC (June 2022 – June 2022) – Brief registration
- Capital One Investing, LLC (September 2015 – July 2018) – Financial Advisor, McLean, VA
- Capital One Advisors, LLC (January 2015 – July 2018) – Financial Advisor, Silver Spring, MD
- Merrill Lynch, Pierce, Fenner & Smith Incorporated (November 2009 – May 2015) – Financial Advisor, Potomac, MD (Discharged)
Leon’s career includes positions at both major wirehouses (Merrill Lynch) and regional firms. After her termination from Merrill Lynch in April 2015, she moved to Capital One within months (January 2015 on the advisory side, September 2015 on the brokerage side). She then spent nearly six years at Woodbury Financial Services before joining OSAIC Wealth in January 2024.
Securities Licenses:
- General Securities Representative Examination (Series 7) – passed November 2009
- Securities Industry Essentials Examination (SIE) – passed October 2018
- Uniform Combined State Law Examination (Series 66) – passed December 2009
Leon is currently licensed in 21 U.S. states and territories and serves as an Investment Adviser Representative in multiple states, subjecting her to fiduciary duty standards in her advisory capacity.
Other Business Activities
Leon reports two outside business activities:
- Santa Fe Financial Services LLC – Business entity for tax/investment purposes only (Owner, non-investment related, started July 2018)
- Real Estate Rental – Investment-related property rental (Owner, started November 2013)
OSAIC Wealth: Current Firm
OSAIC Wealth, Inc. (formerly known as Ladenburg Thalmann Asset Management) is part of the OSAIC family of independent broker-dealers. The firm provides wealth management and financial planning services through independent financial advisors.
The structured note complaint filed in September 2025 involves Leon’s current firm, OSAIC Wealth, where she has worked since January 2024. The firm denied the complaint as “without merit,” and the customer subsequently filed a FINRA arbitration case.
Investors who have experienced issues with OSAIC Wealth brokers should understand that the firm itself may be liable for failure to supervise its registered representatives, particularly when complex products like structured notes are involved.
The Brief LPL Financial Registration
A curious aspect of Leon’s employment history is a brief registration with LPL Financial in June 2022 – lasting only one month while she was simultaneously registered with Woodbury Financial Services. This type of brief, overlapping registration sometimes occurs during:
- Attempted firm transitions that don’t materialize
- Dual registrations for specific business purposes
- Administrative processing during firm changes
- Testing new firm relationships before committing
The fact that Leon remained with Woodbury Financial Services for another year and a half (until January 2024) suggests the LPL relationship didn’t develop as planned.
Red Flags: Warning Signs of Unsuitable Structured Products
Based on the allegations in Leon’s complaint and common issues with structured notes, investors should watch for these warning signs:
- Complex products you don’t fully understand – If you can’t explain the investment, don’t buy it
- “Principal protected” claims – Many structured notes aren’t truly principal protected
- Callable features not explained – Understanding when and why issuer can call the note
- Emphasis on potential returns – Downplaying the risks and restrictions
- High commissions – Structured notes often pay 3-7% commissions creating conflicts
- Illiquidity not disclosed – Secondary market limitations not explained
- Credit risk overlooked – Dependence on issuer’s financial strength not emphasized
- Pressure to invest quickly – Limited time offers or availability claims
- Comparison to CDs or bonds – Misleading comparisons to safer investments
- Suitability questionnaire inconsistencies – Investment doesn’t match stated objectives
Can Investors Recover Losses from Structured Notes?
Investors who were recommended unsuitable structured notes or other complex products may be entitled to recover losses through FINRA arbitration.
Patil Law, P.C. has over 15 years of experience representing investors in FINRA arbitration and securities litigation, with more than $25 million recovered for clients across 1,000+ cases. We provide a free, confidential consultation to review your potential claim. Our firm works on a contingency fee basis, meaning you pay no attorney fees unless we successfully recover money for you.
About FINRA Arbitration
FINRA arbitration is a streamlined dispute resolution process for securities-related claims. It offers a faster, more cost-effective alternative to traditional court litigation. Most cases are resolved within 12-16 months. Claims generally must be filed within six years of the incident.
Related Brokers and Firms
For more information about complaints involving OSAIC Wealth advisors and related securities issues, see:
- OSAIC Wealth Advisors – Complaints & Disclosures
- Broker Misconduct
- Investment Fraud
- Failure to Supervise
- FINRA Arbitration Process
Frequently Asked Questions
Understanding Diana Leon’s Termination from Merrill Lynch
Diana M. Leon was discharged from Merrill Lynch, Pierce, Fenner & Smith Incorporated on April 20, 2015, for “conduct involving making inaccurate entries of required account reviews in an internal tracking system.” Merrill Lynch believed she had not been meeting with clients as required because meetings were not recorded and client notes appeared to be boilerplate. Leon disputes these conclusions, stating she held regular account review meetings and used a template to ensure all required topics were covered. Regardless of who was correct, this termination is classified as “Employment Separation After Allegations” and remains on her permanent disclosure record.
The Structured Note Complaint Against Diana Leon
In September 2025, a customer filed a FINRA arbitration case (Case #25-01883) alleging that callable structured note purchases totaling $50,000 were not suitable for her needs and objectives. OSAIC Wealth denied the complaint as being without merit, and no settlement was paid. The complaint was denied in August 2025. According to Leon, “The customer initiated an arbitration claim after the Firm denied her complaint as being without merit.” While denied, the complaint highlights concerns about structured product suitability and the importance of matching investments to client objectives.
Recovering Losses from OSAIC Wealth Investments
Investors who suffered losses due to unsuitable recommendations at OSAIC Wealth may be entitled to recover their losses through FINRA arbitration. This includes claims involving structured notes, callable securities, or other complex products that didn’t match the investor’s risk tolerance, investment objectives, or financial situation. Claims can be brought against both the individual financial advisor and the firm. OSAIC Wealth may be liable for failure to supervise its representatives, particularly when complex products are sold to conservative investors. Securities claims must generally be filed within six years of the investment or discovery of the problem.
The FINRA Arbitration Process for Securities Disputes
FINRA arbitration is the primary dispute resolution method for securities-related claims between investors and brokerage firms. The process involves filing a statement of claim outlining the allegations and damages, document exchange between parties, and a hearing before a panel of one or three arbitrators who have securities industry knowledge. Most cases are resolved within 12-16 months through either settlement or arbitration award. The process is generally faster and less expensive than traditional court litigation, and decisions are binding on all parties. Investors can represent themselves or hire securities attorneys experienced in FINRA arbitration.
Researching Financial Advisors Through BrokerCheck
FINRA’s BrokerCheck is a free online tool that provides detailed information about registered brokers and brokerage firms. To research Diana M. Leon or any financial professional, visit brokercheck.finra.org and enter the person’s name or CRD number (Leon’s is CRD# 4857407). The report shows complete registration history, employment records, securities licenses and exams passed, and all disclosure events including customer complaints, terminations, regulatory actions, and other matters. BrokerCheck is updated regularly and is an essential tool for investors to review before working with any financial professional or to investigate concerns about current advisors.
Steps to Take If You Suspect Unsuitable Investment Recommendations
If you believe you were sold unsuitable investments or complex products you didn’t understand, take immediate action: First, gather all documentation including account statements, prospectuses, offering documents, and any written or email communications with your financial advisor. Second, document what you were told about the investments, including any claims about safety, returns, or suitability for your situation. Third, review your account opening documents to see your stated investment objectives and risk tolerance. Fourth, calculate your total losses and any fees or commissions paid. Fifth, file a written complaint with the brokerage firm’s compliance department. Sixth, consult with a securities attorney who specializes in FINRA arbitration to discuss your legal options and potential claims. Time limits apply to securities claims, so don’t delay in protecting your rights.
About Patil Law, P.C.
Patil Law, P.C. is a securities litigation firm dedicated to representing investors who have suffered losses due to broker misconduct, unsuitable recommendations, and securities fraud. Founded in 2018 by attorney Chetan Patil, the firm focuses exclusively on FINRA arbitration and investment loss recovery.
With over 15 years of combined experience in securities law, Patil Law has successfully recovered more than $25 million for clients across 1,000+ cases. Attorney Chetan Patil earned his law degree from Case Western Reserve University School of Law. Attorneys Gabriela Dubrocq and Patricia Herrera earned their law degrees from University of Miami. The firm handles cases nationwide involving unauthorized trading, churning, unsuitable investments, breach of fiduciary duty, and failure to supervise.
Patil Law works on a contingency fee basis, meaning clients pay no attorney fees unless the firm successfully recovers money on their behalf. All consultations are free and confidential.
Time is Critical: Six-Year Statute of Limitations
Securities arbitration claims are subject to strict time limits. Under FINRA rules, claims generally must be filed within six years of the date of the alleged misconduct or discovery of the problem. If you invested in structured notes or other complex products through Diana Leon at OSAIC Wealth or any of her previous firms, the clock may be running on potential claims.
Don’t let the statute of limitations expire on your claim. Act now to preserve your rights.
Were You a Client of Diana M. Leon?
If you had an account with Diana M. Leon at OSAIC Wealth, Woodbury Financial Services, Capital One, or Merrill Lynch, you should:
- Review all account statements for structured notes, callable securities, or complex products
- Check for suitability – did investments match your stated objectives and risk tolerance?
- Identify any losses in principal or unexpected early redemptions (calls)
- Verify account review documentation – were you receiving regular reviews as promised?
- Gather all offering documents and prospectuses for complex products
- Document what you were told about product features, risks, and call provisions
- Contact a securities attorney to evaluate potential claims
Even if a firm denied your complaint, you may still have valid claims through FINRA arbitration.
Contact Patil Law Today for a Free Consultation
If you lost money in structured notes, callable securities, or other complex investments recommended by Diana M. Leon, or if you have concerns about unsuitable recommendations at OSAIC Wealth, contact Patil Law, P.C. today for a free, confidential consultation. Our experienced securities attorneys can review your situation and explain your legal options.
Call: 800-950-6553
Email: info@patillaw.com
Website: investmentlosslawyer.com
There is no cost and no obligation. We’re here to help you understand your rights and pursue the compensation you deserve.
Disclaimer: The information in this post is based on FINRA BrokerCheck records and public filings. Allegations described are pending or unproven and may be contested. All investors are entitled to fair treatment under securities laws. This is attorney advertising. Prior results do not guarantee a similar outcome. This communication is for informational purposes only and does not create an attorney-client relationship.