"Making Windows of Opportunity"
P: 610-444-1215
F: 610-444-1635
115 South Broad Street
Kennett Square, PA 19348
P: 302-478-9515
F: 302-478-0262
3801 Kennett Pike
Building C, Ste. 100
Greenville, DE 19807

Mallory J. Armstrong

Focus Area

Mallory concentrates on payroll services, individual tax preparation, and bookkeeping as a QuickBooks ProAdvisor. She also plays a key role in implementing the firm’s advances in technology. Continually reviewing trends in social media, she is working to find channels that will allow Fenstermacher and Company to best serve its clients.

Professional Experience

Prior to joining Fenstermacher & Company in 2012, Mallory worked for various restaurants in customer service, a local energy company as a human resource specialist, and a mortgage company as a bookkeeper and part of its administrative team.


Mallory received a Bachelor’s degree in Business Management with a minor in Accounting in 2008 from West Chester University. She is currently enrolled in West Chester University and finishing her Accounting degree so that she can become a CPA.

Professional Memberships

Pennsylvania Institute of Certified Public Accountants


Our Kennett Square and Greenville offices are following the current guidelines in place regarding closing/reopening. Most of our staff have been working from home since March and will continue to do so throughout the upcoming tax season.

We intend to continue to answer the phones, however, we may need to utilize the automated attendant from time to time. Calls to staff working from home will be forwarded to their cell phones. Please be considerate of the time you call as the forwarding cannot be turned off outside of working hours.

We are committed to practicing physical and social distancing.

Client appointments can be scheduled on a limited basis, and masks will be required. We continue to encourage client meetings by phone or video.

We will continue to utilize our secure online portal to exchange documents. We will also accept paper documents in our Delaware office during business hours or through the mail slot in the Kennett office.

Thank you,

Chad Fenstermacher