Compliance / SEC 17a-4 & FINRA
Compliance frameworkSEC 17a-4, FINRA & MiFID II Compliance
Financial firms face some of the strictest recordkeeping rules anywhere. SEC Rule 17a-4, FINRA Rule 4511 and the rest of FINRA's books-and-records and supervision rules, and the EU's MiFID II all require firms to capture, preserve, supervise, and produce business communications — in a non-rewriteable format or under a compliant audit-trail alternative, and for years. Grotabyte provides sealed, hash-verified, tamper-evident archiving and the supervision tooling to meet them.
Applies to: U.S. broker-dealers and securities firms (SEC/FINRA) and EU investment firms (MiFID II), including their registered representatives and supervised personnel.
Last reviewed: · checked against primary sources
At a glance
| Regulations | SEC Rule 17a-4, FINRA Rules 4511/3110, MiFID II |
|---|---|
| Applies to | Broker-dealers, securities & EU investment firms |
| Storage standard | WORM / non-rewriteable (or audit-trail alternative) |
| Retention | Multi-year (e.g., MiFID II ≥ 5 years) |
What SEC 17a-4 & FINRA requires
Immutable preservation
SEC Rule 17a-4 requires certain records be preserved in a non-rewriteable, non-erasable (WORM) format, indexed and promptly retrievable. A 2022 amendment also permits an audit-trail alternative that tracks changes to records.
Complete capture & supervision
FINRA rules require firms to retain and supervise business communications — including electronic messaging and social media — and to evidence that review.
Communications recording (MiFID II)
MiFID II requires firms to record and retain communications relating to transactions, typically for at least five years.
Prompt production
Regulators expect firms to search and produce requested records quickly and in a usable form.
How Grotabyte helps with SEC 17a-4 & FINRA
Frequently asked questions
What does SEC Rule 17a-4 require for electronic records?
It requires broker-dealers to preserve specified records, with electronic records kept in a non-rewriteable, non-erasable (WORM) format that is indexed and promptly retrievable. Since the 2022 amendment, firms may alternatively use an electronic recordkeeping system with a complete audit trail of changes.
Does FINRA require archiving of chat and social media?
Yes. FINRA expects firms to retain and supervise business communications regardless of channel, including instant messaging, collaboration tools, and business use of social media. Capturing these prevents off-channel communication gaps.
How long must financial communications be retained?
It depends on the record and regulation — many SEC/FINRA records run several years (often six, with the first two readily accessible), and MiFID II generally requires at least five years. A retention policy maps each record type to its required period.
Meet SEC 17a-4 & FINRA with confidence
See how Grotabyte captures, preserves, and produces your records to satisfy SEC 17a-4 & FINRA and the other regulations that govern your organization.
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