Haselkorn & Thibaut is actively investigating allegations related to John Paul Mastrogianakis (CRD #5100871), an Alpharetta, Georgia-based advisor registered with Truist Investment Services, Inc. If you are an investor who has worked with Mr. Mastrogianakis, this report provides key information, potential red flags, and steps you can take to protect your investments.
Who is John Paul Mastrogianakis?
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John Paul Mastrogianakis, sometimes listed as John Mastro, is currently a registered representative and investment adviser associated with Truist Investment Services, Inc. and Truist Advisory Services, Inc. based in Alpharetta, GA (branch: 9919 Haynes Bridge Rd.). He holds Series 7 and Series 66 licenses and is currently registered in 17 U.S. states or territories. His industry experience dates back to 2006 and includes prior registration at several other well-known brokerage firms.
- Current registrations: Since August 2024 with Truist Investment Services and Truist Advisory Services
- Prior firms: Cetera Investment Services, FSC Securities Corporation, American Skandia Marketing, Jackson National Life Distributors
Haselkorn & Thibaut’s Investigation into John Paul Mastrogianakis
In August 2025, a customer dispute was filed against Mr. Mastrogianakis regarding alleged misrepresentation during an exchange from a variable annuity to a fixed annuity. The amount of damages claimed has not been specified as of the latest update.
- Nature of Allegations: Misrepresentation, Improper Variable Annuity Exchange Practices
- Status: Customer dispute is pending
What is Annuity Switching and Why Does It Matter?
Annuity switching involves replacing one annuity (such as a variable annuity) with another (such as a fixed annuity). While suitable in some circumstances, this practice can sometimes be presented with insufficient disclosures regarding costs, surrender charges, loss of benefits, or tax consequences. Investors should understand the motives and consequences before agreeing to an annuity switch.
- Potential issues with improper switching:
- Higher fees or costs
- Surrender charges on the old policy
- Loss of valuable benefits or riders
- Potential tax consequences
Summary of Complaints and Red Flags
| Category | Details |
|---|---|
| Pending Customer Dispute | Yes – Alleged misrepresentation in August 2025 related to an annuity exchange; damages not specified |
| Other Customer Complaints | No disclosed prior complaints or arbitrations as of latest public records |
| Regulatory Actions | No administrative or disciplinary actions found from FINRA, SEC, or state regulators |
| Litigation or Lawsuits | No known lawsuits listed in PACER or court records |
| Press or Media Reports | No major media investigations or negative reports discovered |
| Licenses | Active FINRA registration; Series 7 and 66 held; licensed in 17 states/territories |
Key Takeaways for Investors with John Paul Mastrogianakis
- A pending complaint is under review, involving potential misrepresentation around an annuity product switch. Details and damages are not yet publicly disclosed.
- As of the most recent updates, there are no other formal complaints, regulatory findings, lawsuits, or enforcement actions against Mr. Mastrogianakis.
- If you have shifted annuity products or made substantial changes to your investments with this advisor, a careful review may help prevent or recover any possible losses.
How to Protect Your Investment Accounts: Action Plan
- Request a comprehensive account review if you’ve experienced unexpected losses, high fees, or if you don’t fully understand changes to your annuity or portfolio.
- Monitor your investment and insurance statements for any unauthorized or unclear transactions.
- Use independent resources such as BrokerCheck to confirm advisor credentials and disclosures.
- Consider a free consultation with a trusted securities law firm to discuss your situation confidentially.
Contact Haselkorn & Thibaut for a Free Review
If you invested with John Paul Mastrogianakis in Alpharetta, GA at Truist Investment Services and have questions or concerns about your account, take advantage of a no-obligation, 100% confidential consultation.
- Over 50 years of combined legal experience
- 98% success rate
- Millions recovered for investors nationwide
- No recovery, no fee – you pay nothing unless you win
Call Haselkorn & Thibaut today at 1-888-994-8066 for your free and confidential case review.
Your financial recovery is our priority. Don’t wait—get professional help if you believe your investments may have been mismanaged.

