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Kate (Sefton) Leinenweber has a diverse work experience in the marketing and advertising industry. Kate currently holds a position as Lead Brand Partner at Linqia since May 2023. Prior to this, they worked at PHD as an Associate Strategy Director from September 2021 to May 2023 and as a Strategy Supervisor from September 2020 to September 2021. In 2020, they were a Sr. Associate- Media Planning at Mindshare from January to September. Before that, they worked at PHD as a Strategist from May to December 2019 and as an Assistant Strategist from July 2018 to April 2019. Kate also gained experience as a Marketing and Public Relations Intern at the University of Minnesota from August 2016 to May 2018. Additionally, they have internship experience at Starcom as a Media Intern (Strategy and Programmatic) in 2017, and at DotFlorence as a Digital Content Strategy Intern from January to April 2017. Earlier in their career, they held roles at The Minnesota Daily as a Financial Controller from April to August 2016 and as an Accounting Manager - Accounts Payable from November 2015 to April 2016.

Kate (Sefton) Leinenweber has a Bachelor of Science in Business (B.S.B.) with a concentration in Marketing from the University of Minnesota - Carlson School of Management. Kate also attended Loyola Academy for their high school education.

In addition to their formal education, Kate has obtained several certifications. These include a National Association of State Boards of Accountancy (NASBA) certificate from LinkedIn Learning, a Project Management Institute certificate from LinkedIn Learning, and a Trading Academy Certified - Professional certificate from The Trade Desk, Inc. Kate also holds an Amazon Advertising Foundations Certification from Amazon and an Amazon Advertising Planning & Strategy Accreditation - United States, also from Amazon.