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RIA / WealthAdvisordual registered (broker-dealer)29 years in industry

BRENDAN PATRICK O'BRIEN

Advisor at LPL FINANCIAL LLC

BALTIMORE, MD

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Search this name across graphsid dfx:ria:3cbadc0a-785e-7f81-d2d0-d3ac214b0c67

Data as of Sep 14, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 3:09 AM UTC and rebuilt at most every 15 minutes.

Relationships: 4
Dated events: 0
On other graphs: 0
Observed: Jul 21, 2000 to Sep 14, 2026

Across DFX

This entity has not been resolved onto another DFX graph by a shared identifier. A name match elsewhere would be a candidate, never an identity, and none is recorded.

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Current firm: LPL FINANCIAL LLC
Current firm class: broker-dealer affiliated wealth managerderived
Book size: not publicno per-advisor AUM is published by the SEC, FINRA or IAPD, and DFX estimates none
Industry start: Nov 8, 1996earliest registration or exam on IAPD
Years in industry: 29derivedfrom the industry start date
Years at current firm: 15derivedfrom the current registration's begin date
Prior firms: 3
Current registrations: 1
Registered states: 3
Exams: S65|S63
First exam: Nov 8, 1996
First registration: Jul 21, 2000
Dual registered: yes, broker-dealer
Other names: BRENDAN PATRICK OBRIEN
IAPD individual key: 2154527

Registration history

registration spans on IAPD; the basis says whether the span is a current registration or a prior employment record

Firm	Class	Began	Ended	Current	Branch	Basis
LPL FINANCIAL LLC	Bd affiliated wealth	Oct 22, 2010	n/a	yes	BALTIMORE, MD	Current employment
MORGAN STANLEY	Wirehouse	Jun 1, 2009	Jul 29, 2009	no	Baltimore, MD	Previous registration
CITIGROUP GLOBAL MARKETS INC.	Bd affiliated wealth	Feb 21, 2006	Jun 1, 2009	no	BALTIMORE, MD\|NEW YORK, NY\|BALTIMORE, MD	Previous registration
LEGG MASON WOOD WALKER, INCORPORATED	n/a	Jul 21, 2000	Feb 21, 2006	no	BALTIMORE, MD	Previous registration

Moves

a move is two registration dates; a bulk corporate re-registration is typed BULK_TRANSFER and is not a move

From	To	Left	Joined	Gap, days	Kind	Move type
MORGAN STANLEY	LPL FINANCIAL LLC	Jul 29, 2009	Oct 22, 2010	450	Firm change after gap	Other
CITIGROUP GLOBAL MARKETS INC.	MORGAN STANLEY	Jun 1, 2009	Jun 1, 2009	0	Bulk transfer	Other
LEGG MASON WOOD WALKER, INCORPORATED	CITIGROUP GLOBAL MARKETS INC.	Feb 21, 2006	Feb 21, 2006	0	Bulk transfer	Other

Relationships

Registered with (4)

→ LPL FINANCIAL LLCRegistered adviserregistration: current employment
Oct 22, 2010 to presentfactForm ADV
→ MORGAN STANLEYRegistered adviserregistration: previous registration
Jun 1, 2009 to Jul 29, 2009factForm ADV
→ CITIGROUP GLOBAL MARKETS INC.Registered adviserregistration: previous registration
Feb 21, 2006 to Jun 1, 2009factForm ADV
→ LEGG MASON WOOD WALKER, INCORPORATEDRegistered adviserregistration: previous registration
Jul 21, 2000 to Feb 21, 2006factForm ADV

Dated events

No dated event names this entity yet.