FINRA has suspended registered representative William David Miller after he failed to provide information requested under Rule 8210. The administrative action, which took effect in June 2026, bars Miller from associating with any FINRA member firm until he complies with the regulator’s information requests.
What happened
FINRA initiated an investigation into Miller’s conduct and requested documents and information pursuant to Rule 8210. The rule requires registered representatives to provide information and cooperate with FINRA inquiries. Miller failed to respond, leading to an automatic suspension until compliance is achieved.
Rule 8210 is a cornerstone of FINRA’s supervisory framework. Without it, the regulator cannot investigate potential misconduct or protect investors from brokers who may have violated securities laws. Non-compliance triggers immediate administrative consequences.
Key facts
| Broker name | William David Miller |
| Former firms | Osaic Wealth Inc., Osaic FS Inc., Woodbury Financial Services Inc. |
| Rule violated | FINRA Rule 8210 |
| Sanction | Administrative suspension pending compliance |
| Date | June 2026 |
| Status | Suspended until information provided |
The firms and their supervisory obligations
Miller was previously registered with Osaic Wealth Inc., Osaic FS Inc., and Woodbury Financial Services Inc. Osaic Wealth is a large independent broker-dealer network. Woodbury Financial Services operates as part of the Osaic family of firms. These firms are responsible for supervising their registered representatives and ensuring compliance with FINRA rules.
When a broker fails to respond to FINRA inquiries, it raises questions about what the regulator was investigating. Investors with accounts handled by Miller should review their statements for any unusual activity, excessive trading, or unauthorized transactions.
What investors should know
A Rule 8210 suspension is administrative. It does not mean the broker was found guilty of misconduct. However, it does mean the broker refused to cooperate with a regulatory investigation. Investors should not ignore this signal.
BrokerCheck is the best place to verify a broker’s status. Search for William David Miller on BrokerCheck to view his full disclosure history, including any customer complaints, regulatory events, or employment terminations.
Common mistakes victims make
Investors who suspect misconduct often wait too long to act. Delaying a review of account statements can cause evidence to disappear. Brokers sometimes change firms, and records may become harder to obtain.
Another common mistake is signing a release without understanding the terms. Some firms pressure clients to sign away their rights in exchange for a small refund. Consult a securities attorney before signing any release document.
Finally, many investors assume small losses are not worth pursuing. In reality, arbitration can recover damages even for modest accounts. The key is documenting the misconduct and acting within the applicable time limits.
Regulatory context
FINRA Rule 8210 gives the regulator broad authority to request documents, information, and testimony from member firms and associated persons. It applies to all registered representatives, regardless of firm size. The rule is essential for FINRA to detect churning, unsuitable recommendations, unauthorized trading, and other forms of broker misconduct.
In 2026, FINRA has increased enforcement of Rule 8210 as part of a broader effort to hold brokers accountable for cooperation. Brokers who ignore requests face automatic suspension, which can escalate to permanent bars if non-compliance continues.
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Contact Haselkorn & Thibaut today
Investors who believe they suffered losses related to broker misconduct may wish to consult a qualified securities attorney. Haselkorn & Thibaut offers a free case evaluation to assess your losses and explain your options under arbitration or settlement.
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The information provided here is for educational purposes only and does not constitute legal advice. Investors should consult a qualified securities attorney regarding their specific circumstances.
