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Sean O'Brien Email & Phone Number
Senior Director Investments
at
Marcus & Millichap
LinkedIn matched
✓ Verified July 2026
3 data sources
Profile completeness 86%
Current company
Role
Senior Director Investments
Location
Hinsdale, Illinois, United States
Company size
Who is Sean O'Brien? Overview
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Quick answer
Sean O'Brien is listed as Senior Director Investments at Marcus & Millichap, a with 3754 employees, based in Hinsdale, Illinois, United States. AeroLeads shows a matched LinkedIn profile for Sean O'Brien.
Sean O'Brien previously worked as First Vice President at Marcus & Millichap. Sean O'Brien holds Marketing, Business from University Of Northern Colorado.
Company email context
Email format at Marcus & Millichap
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Marcus & Millichap
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Profile bio
About Sean O'Brien
Sean O'Brien is a First Vice President dedicated to working with owners of Office & Industrial properties. Primary clients include full-time landlords, high net-worth individuals, and developers. Sean also represents prominent Office & Industrial real estate brokers. Sean's approach is to not only help his clients with dispositions, he also emphasizes on assisting with: -Strategic portfolio analysis -Lease consultation as a value-add -Acute sense of market economics -Strong understanding of property valuation & risk assessmentSean is consistently leveraging market intel and going above and beyond industry norms. In 2017, Sean received Marcus & Millichap's National Sales Recognition Award and is on track to be awarded again in 2018.
Current workplace
Sean O'Brien's current company
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Marcus & Millichap
2 roles
Sean O'Brien work experience
A career timeline built from the work history available for this profile.
First Vice President
Current
Jun 2012 - Present
Team & coworkers
Colleagues at Marcus & Millichap
Other employees you can reach at marcusmillichap.com. View company contacts for 3754 employees →
CB
Casey Barker
Colleague at Marcus & MillichapOrlando, Florida, United States
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FH
Freda Hadid-Ferns
Colleague at Marcus & MillichapMiami, Florida, United States
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AG
Arvin Gholamrezae
Colleague at Marcus & MillichapWashington Dc-Baltimore Area, United States
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BT
Blake Talin
Colleague at Marcus & MillichapSeal Beach, California, United States
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MB
Michael Brown
Colleague at Marcus & MillichapChandler, Arizona, United States
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PM
Pavani M
Colleague at Marcus & MillichapAustin, Texas Metropolitan Area, United States
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JP
John Pfister
Colleague at Marcus & MillichapNew York City Metropolitan Area, United States
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WS
William Stover
Colleague at Marcus & MillichapUnited States
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HY
Hailey Yuan
Colleague at Marcus & MillichapSan Jose, California, United States
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ES
Eric Shaden
Colleague at Marcus & MillichapSan Francisco, California, United States
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Casey Barker
Colleague at Marcus & MillichapOrlando, Florida, United States
View →
FH
Freda Hadid-Ferns
Colleague at Marcus & MillichapMiami, Florida, United States
View →
AG
Arvin Gholamrezae
Colleague at Marcus & MillichapWashington Dc-Baltimore Area, United States
View →
BT
Blake Talin
Colleague at Marcus & MillichapSeal Beach, California, United States
View →
MB
Michael Brown
Colleague at Marcus & MillichapChandler, Arizona, United States
View →
PM
Pavani M
Colleague at Marcus & MillichapAustin, Texas Metropolitan Area, United States
View →
JP
John Pfister
Colleague at Marcus & MillichapNew York City Metropolitan Area, United States
View →
WS
William Stover
Colleague at Marcus & MillichapUnited States
View →
HY
Hailey Yuan
Colleague at Marcus & MillichapSan Jose, California, United States
View →
ES
Eric Shaden
Colleague at Marcus & MillichapSan Francisco, California, United States
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2 education records
Sean O'Brien education
Marketing, Business
Education record
Hinsdale Central High School
FAQ
Frequently asked questions about Sean O'Brien
Quick answers generated from the profile data available on this page.
What company does Sean O'Brien work for?
Sean O'Brien works for Marcus & Millichap.
What is Sean O'Brien's role at Marcus & Millichap?
Sean O'Brien is listed as Senior Director Investments at Marcus & Millichap.
Where is Sean O'Brien based?
Sean O'Brien is based in Hinsdale, Illinois, United States while working with Marcus & Millichap.
What companies has Sean O'Brien worked for?
Sean O'Brien has worked for Marcus & Millichap.
Who are Sean O'Brien's colleagues at Marcus & Millichap?
Sean O'Brien's colleagues at Marcus & Millichap include Casey Barker, Freda Hadid-Ferns, Arvin Gholamrezae, Blake Talin, and Michael Brown.
How can I contact Sean O'Brien?
You can use AeroLeads to view verified contact signals for Sean O'Brien at Marcus & Millichap, including work email, phone, and LinkedIn data when available.
What schools did Sean O'Brien attend?
Sean O'Brien holds Marketing, Business from University Of Northern Colorado.
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