The company's revenue rose to some 28.4 million levs in the review period from 22.9 million levs a year earlier, Billboard said in an interim financial statement.
Billboard's expenses widened to 27.6 million levs from 22.2 million levs, mainly due to costs for materials and hired services.
In January-September, Billboard's earnings before interest, taxes, depreciation and amortisation (EBITDA) totalled 2.69 million levs, up from 2.6 million levs in the first nine months of 2021.
Billboard, established in 2001, offers wide format digital printing, offset printing and branding of vehicles, among other services.
Shares in Billboard closed flat at 0.195 levs on the Bulgarian Stock Exchange on Monday. They did not trade on Tuesday morning.
(1 euro = 1.95583 levs)