DFX Intelligence

Data Factory

RIA / WealthAdvisorChartered Financial Analyst|Chartered Investment Counselor32 years in industry

RALPH MARVIN SEGALL

Advisor at WILLIAM BLAIR & COMPANY L.L.C.

CHICAGO, IL | EVANSTON, IL

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:e8793625-1a4c-a2b4-0cb0-268da82696f1

Data as of Sep 15, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 7:37 PM UTC and rebuilt at most every 15 minutes.

Relationships: 3
Dated events: 2
On other graphs: 1
Observed: Oct 17, 1994 to Sep 15, 2026

Across DFX

same identity by shared identifier, citation, or a bridge measured by hand

Private Equityidentity

Ralph Marvin Segall

same person, same CRD on Schedule A · confidence 95% · family precision 100%

Facts

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

Current firm: WILLIAM BLAIR & COMPANY L.L.C.
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, 1993earliest registration or exam on IAPD
Years in industry: 32derivedfrom the industry start date
Years at current firm: 0derivedfrom the current registration's begin date
Prior firms: 2
Current registrations: 1
Registered states: 1
Designations: Chartered Financial Analyst|Chartered Investment Counselor
Exams: S63|S65
First exam: Nov 8, 1993
First registration: Oct 17, 1994
Dual registered: no
IAPD individual key: 1829733

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
WILLIAM BLAIR & COMPANY L.L.C.	Bd affiliated wealth	Dec 12, 2025	n/a	yes	CHICAGO, IL\|CHICAGO, IL\|CHICAGO, IL\|EVANSTON, IL	Current employment
Corient	Independent wealth	Mar 31, 2023	Jan 12, 2026	no	MIAMI, FL\|CHICAGO, IL\|Chicago, IL	Previous registration
SEGALL BRYANT & HAMILL	Other adviser	Oct 17, 1994	Jan 12, 2026	no	CHICAGO, IL\|Chicago, IL\|Chicago, IL	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
SEGALL BRYANT & HAMILL	Corient	Jan 12, 2026	Mar 31, 2023	-1,018	Firm change after gap	Other
Corient	WILLIAM BLAIR & COMPANY L.L.C.	Jan 12, 2026	Dec 12, 2025	-31	Firm change after gap	RIA to ibd

Team moves

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

Team	Left	Joined	From	Kind
319448:1252:IL:2026-01-12	Jan 12, 2026	Dec 12, 2025	CHICAGO, IL	Firm change after gap

Relationships

Registered with (3)

→ WILLIAM BLAIR & COMPANY L.L.C.Registered adviserregistration: current employment
Dec 12, 2025 to presentfactForm ADV
→ SEGALL BRYANT & HAMILLRegistered adviserregistration: previous registration
Oct 17, 1994 to Jan 12, 2026factForm ADV
→ CORIENTRegistered adviserregistration: previous registration
Mar 31, 2023 to Jan 12, 2026factForm ADV

Dated events

Occurred
Jan 12, 2026
Advisor changed firm
Ralph Marvin Segall left Corient for William Blair & Company L.L.C. (registered 2025-12-12)
Form ADVobserved 6 days ago
Occurred
Jan 12, 2026
Advisor changed firm
Ralph Marvin Segall left Segall Bryant & Hamill for Corient (registered 2023-03-31)
Form ADVobserved 6 days ago

Provenance

Graph: RIA / Wealth Management
Canonical id: dfx:ria:e8793625-1a4c-a2b4-0cb0-268da82696f1
First observed: Oct 17, 1994
Last observed: Sep 15, 2026 6 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.

RALPH MARVIN SEGALL

Advisor at WILLIAM BLAIR & COMPANY L.L.C.

CHICAGO, IL | EVANSTON, IL

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:e8793625-1a4c-a2b4-0cb0-268da82696f1

Data as of Sep 15, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 7:37 PM UTC and rebuilt at most every 15 minutes.

Firm

Class

Began

Ended

Current

Branch

Basis

WILLIAM BLAIR & COMPANY L.L.C.

Bd affiliated wealth

Dec 12, 2025

n/a

yes

CHICAGO, IL|CHICAGO, IL|CHICAGO, IL|EVANSTON, IL

Current employment

Corient

Independent wealth

Mar 31, 2023

Jan 12, 2026

MIAMI, FL|CHICAGO, IL|Chicago, IL

Previous registration

SEGALL BRYANT & HAMILL

Other adviser

Oct 17, 1994

Jan 12, 2026

CHICAGO, IL|Chicago, IL|Chicago, IL

Previous registration

From

Left

Joined

Gap, days

Kind

Move type

SEGALL BRYANT & HAMILL

Corient

Jan 12, 2026

Mar 31, 2023

-1,018

Firm change after gap

Other

Corient

WILLIAM BLAIR & COMPANY L.L.C.

Jan 12, 2026

Dec 12, 2025

-31

Firm change after gap

RIA to ibd

Team

Left

Joined

From

Kind

319448:1252:IL:2026-01-12

Jan 12, 2026

Dec 12, 2025

CHICAGO, IL

Firm change after gap