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RIA / WealthAdvisordual registered (broker-dealer)27 years in industry

BRIAN DENNIS MAZGAJ

Advisor at LPL FINANCIAL LLC

WEST PALM BEACH, FL | BONITA SPRINGS, FL | PORT CHARLOTTE, FL | MARCO ISLAND, FL | NAPLES, FL

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Search this name across graphsid dfx:ria:a93631b6-019d-ce1d-db83-a864b23c1cb9

Data as of Sep 15, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 5:32 PM UTC and rebuilt at most every 15 minutes.

Relationships: 6
Dated events: 0
On other graphs: 0
Observed: Jan 12, 1999 to Sep 15, 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: Jan 12, 1999earliest registration or exam on IAPD
Years in industry: 27derivedfrom the industry start date
Years at current firm: 5derivedfrom the current registration's begin date
Prior firms: 5
Current registrations: 1
Registered states: 2
Exams: S65|S63
First exam: Feb 5, 1999
First registration: Jan 12, 1999
Dual registered: yes, broker-dealer
IAPD individual key: 2769714

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	Mar 25, 2021	n/a	yes	MARCO ISLAND, FL\|NAPLES, FL\|BONITA SPRINGS, FL\|NAPLES, FL\|WEST PALM BEACH, FL\|PORT CHARLOTTE, FL	Current employment
BMO HARRIS FINANCIAL ADVISORS, INC	Former SEC adviser	Aug 1, 2012	Mar 26, 2021	no	BONITA SPRINGS, FL\|MARCO ISLAND, FL\|MURDOCK, FL\|NAPLES, FL\|NAPLES, FL\|PHOENIX, AZ\|NAPLES, FL\|CHICAGO, IL\|NAPLES, FL	Previous registration
M&I FINANCIAL ADVISORS, INC.	Former SEC adviser	Apr 23, 2012	Aug 1, 2012	no	BONITA SPRINGS, FL\|NAPLES, FL\|MURDOCK, FL	Previous registration
M&I INVESTMENT MANAGEMENT CORP.	Former SEC adviser	Dec 10, 2010	Apr 19, 2012	no	MILWAUKEE, WI\|BONITA SPRINGS, FL	Previous registration
WELLS FARGO ADVISORS	Wirehouse	Nov 18, 2002	Aug 20, 2010	no	FORT MYERS, FL\|FORT MYERS, FL\|FORT MYERS, FL\|FORT MYERS, FL\|FORT MYERS, FL\|NAPLES, FL\|FORT MYERS, FL	Previous registration
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED	Wirehouse	Jan 12, 1999	Nov 8, 2002	no	FORT MYERS, FL	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
BMO HARRIS FINANCIAL ADVISORS, INC	LPL FINANCIAL LLC	Mar 26, 2021	Mar 25, 2021	-1	Bulk transfer	Ibd to ibd
M&I FINANCIAL ADVISORS, INC.	BMO HARRIS FINANCIAL ADVISORS, INC	Aug 1, 2012	Aug 1, 2012	0	Channel change	Other
M&I INVESTMENT MANAGEMENT CORP.	M&I FINANCIAL ADVISORS, INC.	Apr 19, 2012	Apr 23, 2012	4	Channel change	Other
WELLS FARGO ADVISORS	M&I INVESTMENT MANAGEMENT CORP.	Aug 20, 2010	Dec 10, 2010	112	Firm change	Other
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED	WELLS FARGO ADVISORS	Nov 8, 2002	Nov 18, 2002	10	Firm change	Wirehouse to wirehouse

Relationships

Registered with (6)

→ LPL FINANCIAL LLCRegistered adviserregistration: current employment
Mar 25, 2021 to presentfactForm ADV
→ BMO HARRIS FINANCIAL ADVISORS, INCRegistered adviserregistration: previous registration
Aug 1, 2012 to Mar 26, 2021factForm ADV
→ M&I FINANCIAL ADVISORS, INC.Registered adviserregistration: previous registration
Apr 23, 2012 to Aug 1, 2012factForm ADV
→ M&I INVESTMENT MANAGEMENT CORP.Registered adviserregistration: previous registration
Dec 10, 2010 to Apr 19, 2012factForm ADV
→ WELLS FARGO ADVISORSRegistered adviserregistration: previous registration
Nov 18, 2002 to Aug 20, 2010factForm ADV
→ MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATEDRegistered adviserregistration: previous registration
Jan 12, 1999 to Nov 8, 2002factForm ADV

Dated events

No dated event names this entity yet.