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Mark Leibowitz Email & Phone Number

Founder and Chief Executive Officer at AppStar Financial
Location: San Diego, California, United States 7 work roles 2 schools
3 work emails found @appstar.net 4 phones found area 858, 469, and 866 LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 86%

Contact Signals · 3 work emails · 4 phones

Work email m****@appstar.net
Direct phone (858) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Founder and Chief Executive Officer
Location
San Diego, California, United States
Company size

Who is Mark Leibowitz? Overview

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Quick answer

Mark Leibowitz is listed as Founder and Chief Executive Officer at AppStar Financial, a with 247 employees, based in San Diego, California, United States. AeroLeads shows a work email signal at appstar.net, phone signal with area code 858, 469, 866, and a matched LinkedIn profile for Mark Leibowitz.

Mark Leibowitz previously worked as Founder & Chief Executive Officer at Appstar Financial and Founder and Chairman at Mulligan Funding, Llc. Mark Leibowitz holds Master’S Degree, International Accounting And Finance from The London School Of Economics And Political Science (Lse).

Company email context

Email format at AppStar Financial

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*@appstar.net
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AeroLeads found 3 current-domain work email signals for Mark Leibowitz. Compare company email patterns before reaching out.

Profile bio

About Mark Leibowitz

My name is Mark Leibowitz and I am the Founder and Chief Executive Officer at AppStar Financial, a leader in the electronic payments industry. AppStar Financial distinguishes itself from the competition by our commitment to provide our merchant clientele with the best payment processing programs and solutions tailored to meet both their personal needs and business objectives.Born and raised in South Africa, I moved to London in 1988 to attend London School of Economics and Political Science. After earning my Master's degree in International Accounting and Finance, I moved to the United States and began working at First Boston Corporation. As an Analyst in the M&A department, I not only ran models and created presentations for corporate finance deals and IPO’s, but I gained a valuable perspective of how corporate America operated. My extensive financial background led me to National Bankcard Association in 1994 where I served as their Chief Financial Officer. After identifying a stronger opportunity for recurring revenue focused on merchant processing solutions, I successfully raised money for the organization and became their Chief Executive Officer in 1996. Under my leadership, National Bankcard tripled in size and was acquired by Fifth Third Bank in 2001. The following year, I continued upon my success in the merchant processing industry by founding AppStar Financial. Processing over $1B per year, we are proud to provide small to medium-sized retail, home, and Internet merchants with the highest quality payment processing solutions including credit, debit, EBT, check, and gift cards. AppStar Financial is committed to providing thousands of merchants across the country with top-of-the-line equipment to make business transactions easy and convenient.

Current workplace

Mark Leibowitz's current company

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AppStar Financial
Appstar Financial
Founder and Chief Executive Officer
San Diego, CA, US
Website
Employees
247
AeroLeads page
7 roles · 38 years

Mark Leibowitz work experience

A career timeline built from the work history available for this profile.

Founder & Chief Executive Officer

Current

San Diego, Ca, Us

In 2002, I founded AppStar Financial and continue to motivate, direct, and lead the organization, as well as lay its foundation for expansion. AppStar is committed to providing thousands of small and medium sized merchants with the highest quality payment processing solutions including credit card processing, debit and EBT card processing, check guarantee, electronic check conversion, e-commerce solutions, and gift and loyalty cards. AppStar Financial proudly assists our merchants in choosing the right equipment to fulfill any transaction processing need. By offering quality equipment from top manufacturers, we provide our merchants with the latest technology and software to make business transactions easy and convenient.Specialties: • Electronic Payments • Payment Processing • Transaction Processing • Merchant Processing • Technology • Finance • Entrepreneurship • Small Business Financing • POS • Executive Leadership

Sep 2002 - Present

Founder And Chairman

Current

San Diego, California, Us

I founded Mulligan Funding in 2008 in response to the withdrawal of banks from the small and medium sized lending market following the collapse of the financial sector. As entrepreneurs, we understand the value that accessing reliable working capital plays in being able to compete in a demanding marketplace. We also understand the frustration of being denied access to small business financing or being subjected to an unnecessarily complicated process. In light of these revelations, we founded Mulligan Funding to specifically serve the unique financial needs of small to medium sized businesses. To date, Mulligan Funding has funded over $100M and served over 50,000 clients of all sizes and across many industries. As a private, family-owned business, we have the flexibility to offer a variety of business funding options and a level of service that traditional banks are incapable of providing. The Mulligan experience ensures that everyone within the organization, from your personal account representative to our CEO, hears your voice. Specialties: • Electronic Payments • Payment Processing • Transaction Processing • Merchant Processing • Technology • Finance • Entrepreneurship • Small Business Financing • POS • Executive Leadership

Jun 2008 - Present

Founder

Lumos Pos

I founded LUMOS in 2014 to provide small and medium sized businesses with an iPad Point of Sale system that linked business analytics to big data that drove smart retail decision-making. The easy-to-use software put the user in control of their business by giving them the data they needed to better manage their store.LUMOS handled payment processing, helped manage inventory and employees, provided critical reporting, enabled customer loyalty programs, enhanced security, and provided Cloud back up and mobility. Specialties: • Electronic Payments • Payment Processing • Transaction Processing • Merchant Processing • Technology • Finance • Entrepreneurship • Small Business Financing • POS • Executive Leadership

Sep 2014 - 2015

Chief Executive Officer

National Bankcard Association

My financial background led me to National Bankcard Association in 1994, where I served as their Chief Financial Officer. After identifying a strong opportunity for recurring revenue focused on merchant processing solutions, I successfully raised money for the organization and became their Chief Executive Officer in 1996. Under my direction, National Bankcard tripled in size and merged with Universal Savings Bank (USB) in 2000. In 2001, Fifth Third Bank acquired the organization.Specialties: • Electronic Payments • Payment Processing • Transaction Processing • Merchant Processing • Technology • Finance • Entrepreneurship • Small Business Financing • POS • Executive Leadership

Feb 1994 - Nov 2001

Founder

Mercari International

After the sanctions lifted between the United States and South Africa in 1991, I recognized a need for trade between the two locations and founded Mercari International. Focusing on sheepskin and steel products, the organization allowed for individuals to set up channels and successfully sell their products internationally.Specialties: • Electronic Payments • Payment Processing • Transaction Processing • Merchant Processing • Technology • Finance • Entrepreneurship • Small Business Financing • POS • Executive Leadership

1991 - 1994 ~3 yrs

Analyst

First Boston Corporation

At First Boston Corporation, I served as an Analyst in their Mergers & Acquisitions department where I was responsible for running models and creating presentations to aid in corporate finance deals as well as IPO’s. In addition to learning quality business skills, I gained a valuable perspective of how corporate America operated. Specialties: • Electronic Payments • Payment Processing • Transaction Processing • Merchant Processing • Technology • Finance • Entrepreneurship • Small Business Financing • POS • Executive Leadership

1989 - 1991 ~2 yrs
Team & coworkers

Colleagues at AppStar Financial

Other employees you can reach at appstar.net. View company contacts for 247 employees →

2 education records

Mark Leibowitz education

Master’S Degree, International Accounting And Finance

The London School Of Economics And Political Science (Lse)

Bachelor’S Degree, Economic Science

University Of The Witwatersrand
FAQ

Frequently asked questions about Mark Leibowitz

Quick answers generated from the profile data available on this page.

What company does Mark Leibowitz work for?

Mark Leibowitz works for AppStar Financial.

What is Mark Leibowitz's role at AppStar Financial?

Mark Leibowitz is listed as Founder and Chief Executive Officer at AppStar Financial.

What is Mark Leibowitz's email address?

AeroLeads has found 3 work email signals at @appstar.net for Mark Leibowitz at AppStar Financial.

What is Mark Leibowitz's phone number?

AeroLeads has found 4 phone signal(s) with area code 858, 469, 866 for Mark Leibowitz at AppStar Financial.

Where is Mark Leibowitz based?

Mark Leibowitz is based in San Diego, California, United States while working with AppStar Financial.

What companies has Mark Leibowitz worked for?

Mark Leibowitz has worked for Appstar Financial, Mulligan Funding, Llc, Lumos Pos, National Bankcard Association, and Mercari International.

Who are Mark Leibowitz's colleagues at AppStar Financial?

Mark Leibowitz's colleagues at AppStar Financial include Veronika Thruston, Jéremy Steínmetz, Todd M. Brown, Chenequa Mcduff, and Nelson Matias.

How can I contact Mark Leibowitz?

You can use AeroLeads to view verified contact signals for Mark Leibowitz at AppStar Financial, including work email, phone, and LinkedIn data when available.

What schools did Mark Leibowitz attend?

Mark Leibowitz holds Master’S Degree, International Accounting And Finance from The London School Of Economics And Political Science (Lse).

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