Listed as a CPA in IRS public preparer records. Source: IRS PTIN FOIA extract (Feb 2026), retrieved October 23, 2026. https://www.irs.gov/pub/foia/foia-new%20jersey-extract.csv No state license number is on file. Specialties are blank until this preparer claims the listing. CPA Seek does not contact preparers.

Kirk Holderbaum

CPA · WithumSmith+Brown, P.C.

Whippany, New Jersey 07981

Kirk Holderbaum, CPA in Whippany, NJ

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Kirk Holderbaum, CPA in Whippany · CPA Seek