Corporate Controller
Current
Attitude Wellness, Llc
Jan 2022 - Present
AeroLeads people directory · profile
William Sieck Email & Phone Number
Corporate Controller
at
Attitude Wellness, LLC
1 work email found
@lume.com
LinkedIn matched
✓ Verified July 2026
4 data sources
Profile completeness 100%
Current company
Attitude Wellness, LLC
Role
Corporate Controller
Location
Sterling Heights, Michigan, United States
Who is William Sieck? Overview
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Quick answer
William Sieck is listed as Corporate Controller at Attitude Wellness, LLC, based in Sterling Heights, Michigan, United States. AeroLeads shows a work email signal at lume.com and a matched LinkedIn profile for William Sieck.
William Sieck previously worked as Plant Controller at Advanced Vehicle Assemblies Llc and Plant Controller at Pincanna. William Sieck holds Bachelor Of Business Administration - Bba, Accounting from Schulich School Of Business - York University.
Company email context
Email format at Attitude Wellness, LLC
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{first}.{last}@lume.com
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Profile bio
About William Sieck
Experienced Costing and Accounting Professional with a demonstrated history of working in manufacturing with significant experience in the automotive industry. Skilled in Business Planning, Financial Reporting, Cost Estimating/Quoting, Business and Financial Analysis, Internal Audit, Foreign Languages, and Accounting. Strong finance professional graduated from York University.Additional Relevant Experience Public Accounting - Ernst and Young and Wm. Eisenberg & Co Internal Auditor and Manager, Financial Systems - Mitel Corporation Controller and Accounting Manager - Harman International
Listed skills include Forecasting, Problem Solving, Accounting, Access, and 39 others.
Current workplace
William Sieck's current company
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Attitude Wellness, Llc
10 roles
William Sieck work experience
A career timeline built from the work history available for this profile.
Plant Controller
Jun 2021 - Jan 2022
Plant Controller
Sep 2020 - Jun 2021
Controller-Dfc & Sns
• Monthly close, financial statement preparation and account reconciliations• Quarterly rolling forecasting and annual budgeting• Weekly review of Accounts Payable and Accounts Receivable• Working with plants on process improvements• Contract reviews of past business to ensure upcoming contracts with sports organizations were fair and equitable• Improved royalty reporting and saved company $150k in royalties• Laid off May 2020 due to COVID-19
Jan 2019 - May 2020
Costing Supervisor
• Managed staff of 2• Key team member for improving the costing (quoting) process within the organization and determining new ABC Costing Rates which improved the accuracy of costs and potential profitability• Developed quote escalation process speeding up the response time for quotations• Developed database for tracking quotes completed and the key measurables within them creating a market analysis tool• Developed database for purchased components for use in costing process, improving the ability to quote quickly• Trained department in key aspects of glass manufacturing and costing• Initiated the idea and worked with plant to allow the team to work on the production floor for better understanding of the processes, thus improving the accuracy of our cost estimates.• Costing Trainer for all new hires in the corporate office improving inter-departmental relationships• Large scale lay-off due to business conditions
Jun 2017 - Nov 2018
Senior Financial Analyst (Carlex Acquired Guardian Automotive)
Sale of OEM Business from Guardian Industries to Carlex occurred 11/01/2014.• Created the first company-wide consolidated travel policy• Migrated of 3 general ledgers from the legacy system to the new Carlex system (QAD)• Project leader for migration of the accounts payable system from the legacy system to the new system (QAD)• Project leader for the migration of the accounts receivable from the legacy system to the new system (QAD)• Assisted in the migration of the European subsidiary systems• Key member in implementation of OneStream software for Carlex beginning February 2015.• Financial statement analysis, business case analysis, monthly KPI reporting• Development of quote costing rates for plant product quoting requirements
Nov 2014 - Jun 2017
Osm (Controller) Automotive Central / It Support
Guardian Automotive
May 1997 - Oct 2014
Osm (Controller) /Operations Analyst
Guardian Automotive
Aug 2008 - Jan 2013
Operations Analyst
Guardian Automotive
Nov 2000 - Jul 2008
Acctg Mgr/Assistant Controller
Guardian Automotive
May 1997 - Oct 2000
3 education records
William Sieck education
Bachelor Of Business Administration - Bba, Accounting
Schulich School Of Business - York University
Chartered Accountant / Cpa, Accounting
Chartered Professional Accountants Of Canada (Cpa Canada)
Math/Accounting
University Of Waterloo
FAQ
Frequently asked questions about William Sieck
Quick answers generated from the profile data available on this page.
What company does William Sieck work for?
William Sieck works for Attitude Wellness, LLC.
What is William Sieck's role at Attitude Wellness, LLC?
William Sieck is listed as Corporate Controller at Attitude Wellness, LLC.
What is William Sieck's email address?
AeroLeads has found 1 work email signal at @lume.com for William Sieck at Attitude Wellness, LLC.
Where is William Sieck based?
William Sieck is based in Sterling Heights, Michigan, United States while working with Attitude Wellness, LLC.
What companies has William Sieck worked for?
William Sieck has worked for Attitude Wellness, Llc, Advanced Vehicle Assemblies Llc, Pincanna, Stahls', and Agc Automotive Americas.
How can I contact William Sieck?
You can use AeroLeads to view verified contact signals for William Sieck at Attitude Wellness, LLC, including work email, phone, and LinkedIn data when available.
What schools did William Sieck attend?
William Sieck holds Bachelor Of Business Administration - Bba, Accounting from Schulich School Of Business - York University.
What skills is William Sieck known for?
William Sieck is listed with skills including Forecasting, Problem Solving, Accounting, Access, Auditing, Financial Analysis, Microsoft Office, and Financial Reporting.
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