Advent acquired InPost in 2017 and guided the company through a further round of external funding from private equity firm KKR in the following year. InPost is a postal locker firm that operates a network of over 8,000 self-service postal lockers where customers can get items easily delivered to them. The company also operates its own courier network in addition to postal lockers. 

InPost is used mainly by e-commerce firms in Poland, including a notable customer, Allegro, which recently completed the largest-ever initial public offering from the country. Allegro raised about $2.3 billion on the public markets in October and saw its stock pop up by nearly 60% on its first day of trading.

It seems that Advent International is looking to turn a profit on its investment in InPost just three years after it acquired the company. The private equity firm, which manages over $50 billion in assets, is said to have picked investment banks including Citigroup, JPMorgan Chase, and Goldman Sachs to explore a possible public listing for InPost and on the side also seems to be shopping InPost to potential buyers rather than list the business on the public markets.