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William Graff Email & Phone Number

Global Director of Tax at Inotiv
Location: Indianapolis, Indiana, United States 3 work roles 3 schools
2 work emails found @inotivco.com LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails

Work email w****@inotivco.com
LinkedIn Profile matched
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Current company
Role
Global Director of Tax
Location
Indianapolis, Indiana, United States
Company size

Who is William Graff? Overview

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Quick answer

William Graff is listed as Global Director of Tax at Inotiv, a with 201 employees, based in Indianapolis, Indiana, United States. AeroLeads shows a work email signal at inotivco.com and a matched LinkedIn profile for William Graff.

William Graff previously worked as Manager North American Tax at Envigo Rms, Inc and Manager at Katz, Sapper & Miller. William Graff holds Ll.M., Taxation from Northwestern University Pritzker School Of Law.

Company email context

Email format at Inotiv

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{first}.{last}@inotivco.com
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AeroLeads found 2 current-domain work email signals for William Graff. Compare company email patterns before reaching out.

Profile bio

About William Graff

As a tax attorney, I have worked in both public and private accounting. I am presently the Global Head of Tax for Inotiv Inc. Inotiv Inc is an impressive growth company, with endless potential. As Inotiv grows, so does our Tax Department. Inotiv Tax supports the company in extremely complex and technically interesting matters. I was the head of tax for Envigo, until Inotiv purchased Envigo in November 2021. In my current role I oversee the preparation of over 1000 returns each year, work with our outside accounting firm to file our consolidated federal and state returns and oversee the inhouse preparation of world wide provision. I continue to work with the finance team to generate a positive, effective, and efficient work culture post merger. As a Tax Manager at the largest CPA firm in Indianapolis, I worked on a diverse list of tax issues ranging from entity tax preparation to representing clients in the US Tax Court. I am a skilled federal/state/local tax return reviewer (entity and individuals), an excellent advocate in state and federal tax audits and a driven tax researcher/writer. As the Manager of North American Tax for a company approach $500 million in sales, I leveraged my skills to reduce cost and create cohesive reporting. To drive down professional fees, I in-sourced all tax audits and maximize my staffs bandwidth to produce quality workpapers. To produce effective reporting, I coordinate and manage both the income tax provision and all tax compliance requirements. Lecturer: In December 2013, I did a CLE on "Accounting for Lawyer" with the IndyBar Association. In January 2014 I was a panelist for a webinar regarding ACA strategies for restaurants presented by the Restaurant Association. In both November 2013 and 2104 I presented at KSM's annual Year End Tax Update on the Affordable Care Act.Writings: My research and analysis regarding the ACA has appeared in the KSM Advisor and numerous blogs regarding Healthcare Reform. My research and analysis regarding excise tax has appeared in the KSM Advisor and in Trucking Times Weekly.

Listed skills include Income Tax.

Current workplace

William Graff's current company

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Inotiv
Inotiv
Global Director of Tax
west lafayette, indiana, united states
Website
Employees
201
AeroLeads page
3 roles

William Graff work experience

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

Global Director Of Tax

Current

Indianapolis, Indiana, United States

Nov 2021 - Present

Manager North American Tax

Envigo Rms, Inc

As the Tax Manager I am responsible for the following filings; completing monthly,quarter and year end provisions for North American entities; reviewing both US and Canadian sales and use tax returns; reviewing all US state income/franchise tax returns; reviewing all Canadian federal and Provincial returns. As the Tax Manager I head all governmental tax audits. I manage all deadlines related the completion of the tax audits. This includes responding to notices, working with auditors through the tax audit process and drafting any necessary protests.As the Tax Manager I advise the VP of Finance and the CFO on current tax issues, tax planning, and our current tax position. I am frequently asked to draft memos on an array of tax topics while also helping lead the Finance Department.

Mar 2015 - Nov 2021

Manager

Indianapolis, Indiana Area

I am a manager in the Federal Tax Department at KSM. While I wear different hats here at KSM, I most enjoy my work on US Tax Court Petitions, IRS Appeals, and state/IRS Notice Reponses. In the past year I have be involved in two Tax Court Cases and numerous IRS appeals.During busy season, I manage a group of 160 entity level returns, supervisory review staff prepared return within my department, and provide “tax’ review for returns prepared by KSM’s Business Advisory Groups.

Jul 2008 - Mar 2015
Team & coworkers

Colleagues at Inotiv

Other employees you can reach at inotivco.com. View company contacts for 201 employees →

3 education records

William Graff education

Bs, Honors In Economics And Hod

Activities and Societies: Dean’s List: Every semester Gamma Beta Phi: Honors society that focused on service based initiatives Omicron.

FAQ

Frequently asked questions about William Graff

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

What company does William Graff work for?

William Graff works for Inotiv.

What is William Graff's role at Inotiv?

William Graff is listed as Global Director of Tax at Inotiv.

What is William Graff's email address?

AeroLeads has found 2 work email signals at @inotivco.com for William Graff at Inotiv.

Where is William Graff based?

William Graff is based in Indianapolis, Indiana, United States while working with Inotiv.

What companies has William Graff worked for?

William Graff has worked for Inotiv, Envigo Rms, Inc, and Katz, Sapper & Miller.

Who are William Graff's colleagues at Inotiv?

William Graff's colleagues at Inotiv include Michael Bingham, Amadou Cissé, Jane Park, Susanna Jung, and Breonna Fox.

How can I contact William Graff?

You can use AeroLeads to view verified contact signals for William Graff at Inotiv, including work email, phone, and LinkedIn data when available.

What schools did William Graff attend?

William Graff holds Ll.M., Taxation from Northwestern University Pritzker School Of Law.

What skills is William Graff known for?

William Graff is listed with skills including Income Tax.

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