The Finance arm oversees the hopefully smooth day-to-day operations of REX HILL, provides the monthly and annual views of the company's performance as well as the financial grist to the company's strategic plan. As finance touches every aspect of the business, most rewarding is the opportunity to work on a daily basis with everyone.

   Amy Prosenjak


Amy Prosenjak is President and CEO of A to Z Wineworks located in Newberg, Oregon.  She joined the company in its fifth year with the acquisition of REX HILL Vineyards (2007). Amy has used financial and leadership experience garnered at both a family-owned billion dollar manufacturing company and a publicly traded international retailer. She has been instrumental in transitioning the fast growing A to Z Wineworks from an 80,000 case winery to its current status as Oregon's largest winery with production of 400,000 cases and a newly integrated and expanded winemaking campus.

In 2014, Amy led the company's efforts to gain certification as a B Corporation. This international non-profit, third-party certification reflects a commitment to environmental, social and economic sustainability.  A to Z Wineworks was one of three companies honored as a 2015 global B Corp Champion.  In 2014 and 2015, A to Z Wineworks earned recognition as one of the top four small businesses in Oregon, receiving a special commendation for leadership.  In addition, the company was named to the top ten most admired agricultural companies in Oregon, as well as one of three most innovative small businesses in the state.

Amy is an active member of the community and works with a number of organizations focused on education, outreach, and cultural diversity.  She serves on the Board of Trustees for Linfield College in McMinnville, Oregon and as Vice-Chair on the Board of Directors for Literary Arts, one of the most successful such organizations in the country.  Amy advises and assists in fundraising for the Virginia Garcia Memorial Foundation which provides culturally-appropriate, primary health care intended to eliminate barriers to access. Amy is a member of the Oregon chapter of the Young President’s Organization for which she recently hosted a global conference call on B Corporations.

   Tara Bomberger

TARA BOMBERGER: Vice President of Finance

Tara Bomberger manages day-to-day accounting operations. Tara earned a degree in Public Administration and a Masters' in Legal Administration from Unversity of Denver and began her career with legal firms. She transitioned to the wine industry, working for several smaller wineries in finance and management roles before joining A to Z. Tara manages controls and budgets, inventory flow and costing, and monthly financial reports. Additionally, she works closely with department managers to develop budgets and streamline operations. Tara completed a year-long Leadership program through the Portland Business Alliance. 

Inventory Coordinator


Staff Accountant

Finance Assistant








The A to Z and REX HILL campus is unfortunately closed to all visitors. Only employees and contracted delivery or janitorial services may be present on A to Z Wineworks property. We are sorry for this necessary inconvenience.


If you had already scheduled or were planning a curbside pickup of your club wines, we are happy to ship your selections to your doorstep at no extra cost to you. To arrange delivery, please reach out to Jamie, our Wine Club Manager at


Fortunately, we are still able to take your calls, answer emails, and pack wine to deliver to your door. We want to ensure that everyone can take a break from the news at day’s end with a glass of delicious wine.

Stay well and be kind. We look forward to seeing you again before too long for a toast.

The REX HILL team