Purifying Company-Matched Company Stock - Non-Compliant

AsSalaamu alaikum,

I am enrolled in my company’s stock matching program, whereby I invest a certain portion of my check a month directly into company stock, and whereby the company (Consolidated Edison Company of New York) (ticker ED) matches my contribution at a certain percentage.

Similar to the notion of taking advantage of the company matching in 401k programs and purifying to the best of one’s ability, I went along with the same approach to this company stock (free money) the past however many years with no worry or concern.

I recently realized that my company is entirely non compliant, due to about 80% of it’s debt being interest-bearing.

How should I best go about purifying this? And should I totally stop contributions to this fund?

JazaakAllahu khairan for your consideration and assistance.