The club plays their home games in the Recep Tayyip Erdoğan Stadium in Kasımpaşa, a neighbourhood of the district of Beyoğlu.

As of 2023–24 season, Kasımpaşa is one of eight Süper Lig clubs representing Istanbul, along with Fenerbahçe, Galatasaray, Beşiktaş, Fatih Karagümrük S.K., Pendikspor, İstanbulspor and İstanbul Başakşehir.

On October 12, 2011, 96% of the shares of Kasımpaşa had been sold to its current owner Turgay Ciner for 1 million Turkish Liras (approximately €400,000 at that time).

In the 2011–12 season, the team made a rapid return to Süper Lig after play-off matches that were played in Ankara.

In the 2018–19 season, the team was on the chase of the title with Mbaye Diagne, who had already scored 20 goals by the end of the January transfer window, but after Diagne was sold to Galatasaray for €10 million, which is also the club's record of received transfer fee from a player, the club's performance went downhill and finished that season 14th and survived relegation by only 2 points.

Since 2012, Kasımpaşa have lured well-known players such as Ryan Babel from Ajax, former Sweden national team goalkeeper Andreas Isaksson, Trézéguet and strikers Eren Derdiyok from the Bundesliga and Mbaye Diagne and have continued to invest and strengthen their squad.

The club have also developed many Turkish national team players in various age categories from their youth squad, such as Eren Elmalı and Yasin Özcan.

[3] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.