Mark O’Block

Mark O’Block

Accountant
Brief info

Over 38 years of experience and assisting Fortune 500 companies with a broad range of tax related services including research, consulting, compliance, acquisition, divestiture, sales and use, and legislative support.

Specialties: Practice is focused on serving domestic and multi-national clients in the manufacturing, wholesale, retail and professional service industries.

Testimonials

What Our Donors Over the World Are Saying

The Pitterich Foundation’s support for local nonprofits has transformed countless lives. From funding healthcare initiatives to supporting the arts, their contributions uplift the entire community. Pittsburgh is stronger because of their generosity

Lorraine FranklinNonprofit Director

Thanks to the Pitterich Foundation, our students have access to scholarships and educational resources that were once out of reach. Their commitment to education is shaping the future of our city, giving young minds the opportunity to thrive.

Brett LewisHigh School Administrator

The Pitterich Foundation has been an incredible force for positive change in Pittsburgh. Their generous support has helped revitalize local community programs, providing much-needed resources to those in need. Their dedication to making a lasting impact is truly inspiring!

Dianna YoungCommunity Leader

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