President And Ceo
Current
1987 - Present
~39 yrs 5 mos
AeroLeads people directory · profile
Mark O'Brien Email & Phone Number
President and CEO at O'Brien Greene & Co.
at
O'Brien Greene & Co.
1 work email found
@obriengreene.com
1 phone found area 610
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 86%
Current company
Role
President and CEO at O'Brien Greene & Co.
Location
Media, Pennsylvania, United States
Who is Mark O'Brien? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Mark O'Brien is listed as President and CEO at O'Brien Greene & Co. at O'Brien Greene & Co., based in Media, Pennsylvania, United States. AeroLeads shows a work email signal at obriengreene.com, phone signal with area code 610, and a matched LinkedIn profile for Mark O'Brien.
Mark O'Brien previously worked as President and CEO at O'Brien Greene & Co. and Portfolio Manager at Brown Brothers Harriman. Mark O'Brien holds Master'S Degree, Liberal Arts from University Of Pennsylvania.
Company email context
Email format at O'Brien Greene & Co.
This section adds company-level context without repeating Mark O'Brien's masked contact details.
{first_initial}{last}@obriengreene.com
86% confidence
AeroLeads found 1 current-domain work email signal for Mark O'Brien. Compare company email patterns before reaching out.
Profile bio
About Mark O'Brien
Mark O'Brien is a President and CEO at O'Brien Greene & Co. at O'Brien Greene & Co..
Current workplace
Mark O'Brien's current company
Company context helps verify the profile and gives searchers a useful next step.
2 roles · 46 years
Mark O'Brien work experience
A career timeline built from the work history available for this profile.
Portfolio Manager
1980 - 1987
~7 yrs
4 education records
Mark O'Brien education
Master'S Degree, Liberal Arts
University Of Pennsylvania
Master Of Business Administration (M.B.A.)
The Wharton School
Bachelor'S Degree
Princeton University
High School
The Hill School
FAQ
Frequently asked questions about Mark O'Brien
Quick answers generated from the profile data available on this page.
What company does Mark O'Brien work for?
Mark O'Brien works for O'Brien Greene & Co..
What is Mark O'Brien's role at O'Brien Greene & Co.?
Mark O'Brien is listed as President and CEO at O'Brien Greene & Co. at O'Brien Greene & Co..
What is Mark O'Brien's email address?
AeroLeads has found 1 work email signal at @obriengreene.com for Mark O'Brien at O'Brien Greene & Co..
What is Mark O'Brien's phone number?
AeroLeads has found 1 phone signal(s) with area code 610 for Mark O'Brien at O'Brien Greene & Co..
Where is Mark O'Brien based?
Mark O'Brien is based in Media, Pennsylvania, United States while working with O'Brien Greene & Co..
What companies has Mark O'Brien worked for?
Mark O'Brien has worked for O'Brien Greene & Co. and Brown Brothers Harriman.
How can I contact Mark O'Brien?
You can use AeroLeads to view verified contact signals for Mark O'Brien at O'Brien Greene & Co., including work email, phone, and LinkedIn data when available.
What schools did Mark O'Brien attend?
Mark O'Brien holds Master'S Degree, Liberal Arts from University Of Pennsylvania.
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