John Sergio: Email & Phone Number

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Chief Operating Officer at Maxim Group LLC|Wantagh, New York, United States

Position:

Chief Operating Officer at Maxim Group LLC

Location:

Wantagh, New York, United States

View John Sergio's Email

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Last updated: 2026-06-04

Updated: 2026-06-04

Found email addresses for John Sergio:

Business emails:

j*****o@maximgrp.com

Personal emails:

j***@yahoo.com,

s***@maximgroup.com.br,

s***@aol.com,

s***@hotmail.com

Found phones for John Sergio:

+1-909-***-**43,

+1-323-***-**12,

+1-909-***-**31,

+1-520-***-**13

A different John Sergio?

Work Experience 22 years

Chief Operating Officer at Maxim Group LLC

COO Emeritus at Maxim Group LLC

Aug 2024 - Current

Chief Operating Officer at Maxim Group LLC

Oct 2002 - Aug 2024

John Sergio started working in 2002, then the employee has changed 1 company and 1 job. On average, John Sergio works for one company for 11 years 10 months.

Their professional focus is Series 4, Series 7, and Series 9 across 3 core areas.

Education

Bachelors at Long Island University

Master of Arts - MA at Long Island University

Frequently Asked Questions

What is John Sergio's email address?

SignalHire found verified email addresses for John Sergio, both business and personal. Their business email is j*****o@maximgrp.com, and personal emails include j***@yahoo.com, s***@maximgroup.com.br, and s***@aol.com.

What is John Sergio's phone number?

SignalHire found multiple verified phone numbers for John Sergio: +1-909-***-**43, +1-323-***-**12, and +1-909-***-**31.

How do I contact John Sergio at Maxim Group LLC?

You can reach John Sergio through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is John Sergio's professional background?

John Sergio has 22 years of professional experience. They have held roles including COO Emeritus, and Chief Operating Officer at companies such as Maxim Group LLC, and Maxim Group LLC. Their education includes Bachelors from Long Island University, and Master of Arts - MA from Long Island University.

Is John Sergio's contact information up to date?

Yes. John Sergio's SignalHire profile was last updated on 4 June 2026, reflecting their current position as Chief Operating Officer at Maxim Group LLC in New York, United States.

John Sergio Namesakes

Name

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JOHN SERGIO

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John Sergio

AVC Software Consulting

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