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MATTHEW O SHEA

(Illinois)

Our goal is to deliver results for our clients. We are a hardworking team who represent our clients' interests at the highest levels on both the legislative and executive sides.

Dedicated to working hard for our clients in a bi-partisian fashion.

Passionate about public service, government relations, grassroots and politics.

Innovative in our ways of approaching clients legislative and lobbying needs.

Matthew O'Shea is the President of Matthew O'Shea Consulting, Inc. In 1994, Matthew started his public service career with State Representative Dan Rutherford and then worked for State Representative James Durkin and Senator Thomas Walsh from 1995 through 2000. While working for Representative Durkin and Walsh, Matt attended John Marshall Law School and completed his Juris Doctor in 2000. After leaving Representative Durkin and Senator Walsh, he served as the Village Administrator for the Village of Forest Park located in the western suburbs of Cook County. While serving as Village Administrator, Matt was also appointed to the Senate to fill out the remaining term of Senator Tom Walsh for the 22nd Legislative District.

As State Senator, Matt was able to learn and experience the legislative process from an elected official standpoint. In 2004, Matt joined House Republican Minority Leader Tom Cross as Deputy Chief and Ethics Officer before coming Chief of Staff. In his role as Chief of Staff, he dealt with all four legislative caucuses including participating in several high level leadership meetings. His role as Chief of Staff allowed him to deal with many important issues facing the legislature such as pensions, capital funding, energy, local government, budget, Medicaid and redistricting.

Matt has knowledge and experience working with many regulatory issues including those before Joint Committee on Administrative Rules. Matt has spent time working on many political elections at all levels of state government.

Former senior legal counsel in the Illinois Senate President's office

Member of the State Bar of Illinois

Mandy Drendel joined the Cornerstone Illinois team as a vice president in January 2021. She is an attorney and registered lobbyist with experience advocating on behalf of clients before the Illinois General Assembly and Executive Branch. As a contract lobbyist, Mandy's worked on behalf of industries including telecommunications, energy, gaming, healthcare, insurance, education and cannabis.

Prior to joining Cornerstone, she served as senior legal counsel in the Illinois Senate President's office where she worked on telecommunications, insurance, tax, and pension issues. During her tenure, Mandy helped lead major legislative initiatives including a telecommunications rewrite, small cell wireless deployment, major insurance legislations, revenue packages, property tax relief and pension reform.

Before that, Mandy served on the Senate Democratic legal team, and acted as the caucus's key regulatory and administrative rule specialist where she staffed the General Assembly's administrative rulemaking committee. This experience provided her direct access and insight into the regulatory arm of Illinois state government.

Mandy received a Juris Doctorate from the Loyola University Chicago School of Law and a Bachelor of Arts degree from Washington University in St. Louis, Missouri.

JONATHAN AARON

(Illinois)
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LATOYA GREENWOOD

(Illinois)

KEVIN HEFFERNAN

(Illinois)
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YEHIEL KALISH

(Illinois)

BEN LAZARE

(Illinois)
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  • 225 S. COLLEGE ST.SUITE 100SPRINGFIELDIL62704

DESTINY LEE

(Illinois)
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  • 431 EAST ADAMS STREETSPRINGFIELDIL62701

GRACIE MEHLENBECK

(Illinois)

JOHN MEIER

(Illinois)
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KIMBERLY PALERMO STOERGER

(Illinois)
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RACHEL SHIMKUS

(Illinois)
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KEVIN TAYLOR

(Illinois)

DANIEL WEISS

(Illinois)