PCAOB Registered

Languages Spoken: English Russian

Sikich LLP is a leading professional services firm specializing in accounting, advisory, technology and managed services. Founded in 1982, Sikich now ranks as the country’s 28th largest Certified Public Accounting firm and is among the top 10 of all enterprise resource planning solution partners in the country. From corporations and not-for-profits to state and local governments, we help our clients reach their long-term, strategic goals through a unique formula of products and services. Visit our website to discover how you can elevate performance in your organization.

Securities are offered through Sikich Corporate Finance LLC, a registered broker dealer with the Securities Exchange Commission and a member of FINRA/SIPC.

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Christopher Geier Sikich

Chris Geier, CEO / Managing Partner

In addition to leading the overall strategic and financial direction of Sikich LLP, Chris Geier is responsible for large mergers and acquisitions and is a member of the firm’s executive board. Chris is focused on delivering the highest level of professional client service and creating a dynamic workplace where employees can be successful. Chris’ leadership experience includes more than 25 years as an advisor and C-level executive in both private and publicly-traded companies.

Contact Us

Languages Spoken: English and Russian

Sikich LLP

1415 W. Diehl Rd, Suite 400, Naperville, IL 60563


+1 630 566 8400 / +1 877 279 1900

View firm's social media links

Firm Locations

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Primary Location

1415 W. Diehl Rd, Suite 400, Naperville, IL 60563, United States

Tom Luken, CPA, COO / Partner
+1 630 566 8400 / +1 877 279 1900

Chicago, IL, United States

200 W. Madison Street, Suite 3200, Chicago, IL 60606, United States

+1 312 648 6666

Rockford, IL, United States

401 W. State Street, Suite 509, Rockford, IL 61114, United States

+1 815 282 6565

Decatur, IL, United States

132 South Water St., Suite 300, Decatur, IL 62523, United States

Dave White, Partner in Charge

+1 217 423 6000

Springfield, IL, United States

3201 W. White Oaks Drive, Suite 102, Springfield, IL 62704, United States

Richard Lynch, Partner in Charge
+1 217 862 1869

+1 217 793 3363

Akron, OH, United States

274 White Pond Dr, Akron, OH 44320, United States

Dave Brockman, Partner-in-Charge

+1 330 864 6661

Indianapolis, IN, United States

8555 N. River Rd., Suite 300, Indianapolis, IN 46240, United States

Tom Bayer, Partner in Charge
+1 317 660 4405

+1 317 842 4466

Milwaukee, WI, United States

13400 Bishop's Lane, Suite 300, Milwaukee, WI 53005, United States

Mark Sobczak, Partner-in-Charge

+1 262 754 9400

Denver, CO, United States

6021 S. Syracuse Way, Suite 200, Denver, CO 80111, United States

+1 720 200 0142

St. Louis, MO, United States

12655 Olive Blvd., Suite 200, St. Louis, MO 63141, United States

David Sauerburger, Partner-in-Charge

+1 314 275 7277

Marlborough, MA, United States

2 Mount Royal Ave., Suite 510, Marlborough, MA 01752, United States

+1 508 485 5588

Minneapolis, MN, United States

11670 Fountains Dr, Suite 200, Minneapolis, MN 55369, United States

+1 763 445 2632

Pasadena, CA, United States

87 N. Raymond Ave., Suite 906, Pasadena, CA 91103, United States

+1 877 279 1900

People at Sikich LLP

Christopher Geier Photo

Christopher Geier


Tom Luken Photo

Tom Luken

Chief Operating Officer

Tom Hastings Photo

Tom Hastings

Director of Resource Management

Pam Aman Photo

Pam Aman


Cheryl Aschenbrener Photo

Cheryl Aschenbrener

Partner-in-Charge of Private Equity

Tom Bayer Photo

Tom Bayer


Dave Brockman Photo

Dave Brockman

Partner-in-Charge of Professional Services

Tracy Burkhart Photo

Tracy Burkhart


Anthony Cervini Photo

Anthony Cervini


Megan Cochran Photo

Megan Cochran


Laura Culp Photo

Laura Culp

Partner, Tax and Wealth Mgmt, Construction and Real Estate Vertical Leader

Jim Drumm Photo

Jim Drumm


Kolbeinn Einarsson Photo

Kolbeinn Einarsson


Kurt Estes Photo

Kurt Estes

Managing Director, Head of Corporate Development

Greg Fiedler Photo

Greg Fiedler


Dana Howell Photo

Dana Howell


Michael Kean Photo

Michael Kean


Jim Keeslar Photo

Jim Keeslar


Neil Keller Photo

Neil Keller

Partner-in-Charge: Tax

Brian Kelley Photo

Brian Kelley

Managing Director - State & Local Tax Services

Jenny Kramer Photo

Jenny Kramer


Tom Krehbiel Photo

Tom Krehbiel

Partner-in-Charge of CPA Services

Richard Lynch Photo

Richard Lynch

Partner-in-Charge of Not-for-Profit Services

Elena Mossina Photo

Elena Mossina

Partner-in-Charge of Sikich’s International Tax

Jerry Murphy Photo

Jerry Murphy

Partner-in-Charge of Manufacturing & Distribution

Janel OConnor Photo

Janel OConnor

Chief Human Resources Officer

Cameron Petroff Photo

Cameron Petroff

Marketing Director

Colleen Redington Photo

Colleen Redington


Scott Sanders Photo

Scott Sanders

Chief Information Officer

David Sauerburger Photo

David Sauerburger


Amy Sherwood Photo

Amy Sherwood


Mark Sobczak Photo

Mark Sobczak


David White Photo

David White


Ashley Childers Photo

Ashley Childers

Senior Audit Manager

Jill Boyle Photo

Jill Boyle

Senior Manager, Not-for-Profit Tax

Leah Davis Photo

Leah Davis

HR Manager

Kelli Schweder Photo

Kelli Schweder

Senior Manager of CPA Administration

Dustin Sheppard Photo

Dustin Sheppard

Senior Manager Tax Services

Martha Trotter Photo

Martha Trotter

Senior Manager

Samantha Nystrom Photo

Samantha Nystrom

Content & Digital Marketing Manager

Thought Leadership by Sikich LLP