John Moellenberg
Founding Partner
IT Risk & Compliance, Internal Controls
John Moellenberg
IT Risk & Compliance, Internal Controls

John heads up the firm’s Internal Controls group which includes SOC reporting (including SSAE 16), SOX, internal audit and internal controls engagements. He has developed an expertise working with complex internal control environments and helping clients address internal control issues.

John’s public accounting experience spans 26 years of service. He spent the first 16 years of his career at EY in three offices (Cleveland, St. Louis and Austin) working mostly with large, multinational companies such as Cisco, Koch Industries and Arch Coal. Desiring to stay in Austin, he helped establish Holtzman Partners with Mike Panozzo and Jamie Holtzman in 2004.

What John likes most about his work is delivering quality service and advice to companies of all sizes and in a wide-range of industries. His clients include Whole Foods, Epicor, Aspen Heights, HomeAway and Dril-Quip. John also feels a commitment to providing long-term career opportunities to Holtzman personnel and is active in growing the firm.

John earned a B.S. in business administration from Miami University-Oxford Ohio. He is a CPA in the state of Texas and a member of the AICPA.

He enjoys spending his leisure time with his son either watching the St Louis Cardinals, playing golf or traveling to see his extended family.


Could Your Software Company Benefit from a Model Validation Review?

The Importance of SOC Reports

Could Your Company Benefit from a SOX Optimization Review?

Q&A With John

What would be impossible for you to give up
Time with my son and the St Louis Cardinals.

Where is home?
I’m from St. Louis and have a large family that still lives there. But, home is Austin with my son and career.

What’s your favorite family tradition?
My son and I are very close with my family in St Louis and we try to see them at least five times a year. Each summer, my parents rent a large house at a cool locale (like Martha’s Vineyard or St. Simons Island) and my extended family all get together with lots of kids running around. We look forward to that trip all year long.

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