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RIA / WealthAdvisordual registered (broker-dealer)17 years in industry

William Morrow Arth

Advisor at PIPER SANDLER & CO.

Chicago, IL | Lincoln, NE

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:9c2c4e74-4c22-918d-e7ed-d9600117fc2b

Data as of Sep 15, 2026 (this record's last observation) from federal regulator filings. Page built Sep 20, 2026, 8:11 AM UTC and rebuilt at most every 15 minutes.

Relationships: 3
Dated events: 0
On other graphs: 0
Observed: Jul 29, 2009 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: PIPER SANDLER & CO.
Current firm class: institutional managerderived
Book size: not publicno per-advisor AUM is published by the SEC, FINRA or IAPD, and DFX estimates none
Industry start: Jul 28, 2009earliest registration or exam on IAPD
Years in industry: 17derivedfrom the industry start date
Years at current firm: 7derivedfrom the current registration's begin date
Prior firms: 2
Current registrations: 1
Registered states: 1
Exams: S63|S65
First exam: Jul 28, 2009
First registration: Jul 29, 2009
Dual registered: yes, broker-dealer
Other names: BILL MORROW ARTH|BILLY MORROW ARTH
IAPD individual key: 5696844

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
PIPER SANDLER & CO.	Institutional manager	Sep 9, 2019	n/a	yes	Lincoln, NE\|Chicago, IL	Current employment
AMERITAS ADVISORY SERVICES	Former SEC adviser	Nov 17, 2014	Sep 9, 2019	no	LINCOLN, NE	Previous registration
TRANSWESTERN CAPITAL ADVISORS, LLC	Asset manager	Jul 29, 2009	Oct 31, 2014	no	NEWPORT, RI	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
AMERITAS ADVISORY SERVICES	PIPER SANDLER & CO.	Sep 9, 2019	Sep 9, 2019	0	Firm change	Other
TRANSWESTERN CAPITAL ADVISORS, LLC	AMERITAS ADVISORY SERVICES	Oct 31, 2014	Nov 17, 2014	17	Firm change	Other

Team moves

moves this advisor made together with colleagues (two or more registrations ending and beginning together)

Team	Left	Joined	From	Kind
14869:665:NE:2019-09-09	Sep 9, 2019	Sep 9, 2019	LINCOLN, NE	Firm change

Relationships

Registered with (3)

→ PIPER SANDLER & CO.Registered adviserregistration: current employment
Sep 9, 2019 to presentfactForm ADV
→ AMERITAS ADVISORY SERVICESRegistered adviserregistration: previous registration
Nov 17, 2014 to Sep 9, 2019factForm ADV
→ TRANSWESTERN CAPITAL ADVISORS, LLCRegistered adviserregistration: previous registration
Jul 29, 2009 to Oct 31, 2014factForm ADV

Dated events

No dated event names this entity yet.

Provenance

Graph: RIA / Wealth Management
Canonical id: dfx:ria:9c2c4e74-4c22-918d-e7ed-d9600117fc2b
First observed: Jul 29, 2009
Last observed: Sep 15, 2026 5 days ago
Source families: Federal regulator filings
1 registered feed stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.
Resolution: Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.

William Morrow Arth

Advisor at PIPER SANDLER & CO.

Chicago, IL | Lincoln, NE

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:9c2c4e74-4c22-918d-e7ed-d9600117fc2b

Data as of Sep 15, 2026 (this record's last observation) from federal regulator filings. Page built Sep 20, 2026, 8:11 AM UTC and rebuilt at most every 15 minutes.

Firm

Class

Began

Ended

Current

Branch

Basis

PIPER SANDLER & CO.

Institutional manager

Sep 9, 2019

n/a

yes

Lincoln, NE|Chicago, IL

Current employment

AMERITAS ADVISORY SERVICES

Former SEC adviser

Nov 17, 2014

Sep 9, 2019

LINCOLN, NE

Previous registration

TRANSWESTERN CAPITAL ADVISORS, LLC

Asset manager

Jul 29, 2009

Oct 31, 2014

NEWPORT, RI

Previous registration

From

Left

Joined

Gap, days

Kind

Move type

AMERITAS ADVISORY SERVICES

PIPER SANDLER & CO.

Sep 9, 2019

Firm change

Other

TRANSWESTERN CAPITAL ADVISORS, LLC

AMERITAS ADVISORY SERVICES

Oct 31, 2014

Nov 17, 2014

Firm change

Other

Team

Left

Joined

From

Kind

14869:665:NE:2019-09-09

Sep 9, 2019

LINCOLN, NE

Firm change