Management Team


Gary Grottke, CPA
Chief Executive Officer

As a highly involved CEO, Gary does more than what his CPA label requires of him – he reviews the financial side of every client’s business and makes recommendations for maximum business growth, providing top-level, CFO support that most bookkeeping firms cannot provide. He is always working to broaden his client-base, knowing that the back office model he has developed can greatly benefit many different types of businesses, seeing it benefit current clients along with his own entrepreneurial endeavors.

Gary has worked professionally in the corporate world AND as an entrepreneur. He has over 30 years of financial, real-estate and management experience. He has also been involved in significant company mergers, acquisitions and turn-around situations. He has a BA in Economics from Vanderbilt University, an MBA from Purdue  is a CPA, a Licensed General Contractor and a Certified Tax Preparer.

In his free time, he enjoys spending time with his family and grandchildren. Now that the curse has been broken, he looks forward to more great baseball and championship games from his favorite team, the Chicago Cubs.

Stanley N. Logan

Stan is a CPA with over 30 years experience as an accounting practitioner and operator of several businesses in technology and consulting. Most recently, Stan was President and Chief Operating Officer of a startup,  XSELL Technologies (Artificial Intelligence) where he remains as an Advisor. He is also an Advisor to Thyng (Augmented Reality) based in Chicago.

Stan has led office, industry, national and international practices at Huron Consulting, KPMG and Arthur Andersen.  His practice specialities include accounting, tax, forensic accounting, SEC reporting, due diligence and public debt and equity offerings including IPO’s.

Stan is located in our Chicago office at 1871 in the Merchandise Mart.

Sue DeJonge, EA
Tax Manager

Sterling Office

Sue’s history with the Sterling office goes back to 1992 with her mother’s business, the Janis Card Company.  Prior to taking over full-time in 2009, Sue helped her mother form a firm focusing on all aspects of tax and accounting services specializing in small businesses.

Sue has been an Enrolled Agent since 2009.  She welcomes and enjoys the challenge of tax preparation including individual, corporate, partnership and trusts. Today she continues to delight in watching as clients follow their passion by starting a business and doing what they love every day.

In her spare time, Sue loves to be outside at the family cabin in Wisconsin, reading, boating, travel, and finding new places to eat dinner.  She loves spending time with her husband of 35 years, Ron and their daughter and son-in-law.

Hollie Bourne
Director of Operations

Hollie has been with QBO since its inception in 2011.  Her experience working with all parts of the back office has given her the insight into how to make back office processes more efficient and cost effective for clients. As the Director of Operations she works to ensure new clients are set up to receive the best possible service from the back office team and allow clients to achieve the highest benefit from working with QBO.

Hollie attended TCU and Elmhurst College and received a BA in Psychology and Sociology. She has her MS in Organizational Psychology with a certification in Organizational Consulting. This has enhanced her ability to see the organizational problems in clients’ back office procedures and assists in developing remedies to alleviate these issues.  She spends most of her free time with her family – husband Eric and children Heidi & Andrew – watching or playing baseball/softball and enjoying the outdoors. She loves to read, fitness, trying new foods & wine, and cheering for her favorite team – the Chicago Cubs!   

Katy Swerdlick, CPA
Tax Manager

Katy recently changed careers, joining the QBO team in 2017.  After 17 years of running her own business as a Doctor of Chiropractic, she returned to school to get her degree in accounting and obtain licensing as a CPA. Her experience answering her patients’ questions illuminated for her the importance of understanding tax, accounting and insurance issues.  Katy gets the greatest satisfaction working with business owners as she helps them understand and unravel their finances.

Spare time? Chloe, Ally and Zane, her three children, take up most of her spare time. Then add the two foster dogs that became their family dogs, and her time is all gone, but well spent.  

Danielle Giza
Office  Manager
Naperville Office 

Danielle has been with QBO since May 2016 and began as the Administrative Assistant. Since then, her role has grown into Office Manager – overseeing all the Accounts Payable, Accounts Receivable, and payroll processing in the Naperville office. Her past experience in customer service, administrative work and accounting give her insight on the day-to-day of business operations. She is  excited  to work with business owners and use her accounting and back office expertise to offer the best financial solutions.

Danielle is continuing her education at Rasmussen College as she works toward a Bachelors in Accounting and earning her CPA after graduation.  For fun, Danielle, her husband and kids love to go camping and being outdoors.  She cherishes her entire family and especially misses her daughter stationed in Fort Campbell, Kentucky serving in the Army as a member of the military police.