Outside Business Activities
An Outside Business Activity (OBA) is any business or work a financial professional does outside of their main firm, typically where they receive compensation. In the U.S. securities industry, registered persons are generally required to disclose these activities to their firm and, in some cases, on regulatory forms. This concept is specific to financial services regulation and is a matter of adherence to defined rules rather than voluntary ethical judgment.
Outside Business Activity (OBA) refers, under FINRA Rule 3270, to activity in which a registered person serves as an employee, independent contractor, sole proprietor, officer, director, or partner of another person, or is compensated or has the reasonable expectation of compensation, outside the scope of the relationship with their member firm. Firms are expected to require disclosure and evaluate such activities, and per SOURCE 4 investment advisers may also need to disclose OBAs on required regulatory forms. Per SOURCE 1, FINRA has proposed to replace Rules 3270 and 3280 (Private Securities Transactions), so practitioners should confirm the current rule status against primary sources. This entry addresses U.S. securities-industry obligations under FINRA and applicable adviser regulation and is jurisdiction-specific; the precise scope, disclosure timing, and any effective dates of proposed rule changes should be verified against the source rulebook, as exact requirements vary and may change. This glossary entry is educational and not a substitute for qualified legal or compliance counsel. OBA is distinct from Private Securities Transactions (historically addressed separately under Rule 3280) and from a firm's broader compliance program elements such as its code of conduct, training modules, and monitoring functions.
Why it matters
Outside Business Activities sit at the intersection of employee conduct and regulatory obligation in the U.S. securities industry. A registered person's activity outside their firm can create conflicts of interest, obscure the source of compensation, or expose customers to risks the firm has not evaluated. Because FINRA Rule 3270 generally requires disclosure of such activities, unreported OBAs are a recurring focus of regulatory scrutiny and firm supervision. This is a compliance matter, adherence to a defined rule with defined disclosure expectations, rather than a purely values-based ethical judgment, though undisclosed outside activity can also raise ethical concerns about candor.
For firms, the significance lies in supervisory responsibility. When a registered person engages in outside work, the firm is expected to require disclosure and evaluate the activity, which supports its ability to identify conflicts and protect customers. Failing to capture and assess OBAs can leave a firm unable to demonstrate adequate supervision. Investment advisers face a parallel obligation: per the NASAA source, advisers engaged in an OBA must disclose information about those activities on several required regulatory forms, making accurate disclosure a matter of regulatory recordkeeping as well as internal policy.
The regulatory landscape here is also in flux. As of the Armstrong Teasdale source, FINRA has proposed to replace Rules 3270 and 3280 (Private Securities Transactions). Because scope, disclosure timing, and any effective dates may change, practitioners should confirm current rule status against the primary rulebook rather than relying on a fixed description. Exact requirements vary by circumstance and should be verified against FINRA's rules and applicable adviser regulation; this entry is educational and not a substitute for qualified legal or compliance counsel.
Who it's relevant to
Inside OBA
Common questions
Answers to the questions practitioners most commonly ask about OBA.