S&P Global issued a statement expressing its “deepest sympathies” to Ms Gos and her mother, who police said were “fighting for their lives” after being taken to a south London hospital on Sunday.
The Metropolitan Police said the women were aged 30 and 64, adding they were violently assaulted by what they believe may have been a hammer in Eltham, south east London.
Joe Xuereb, 27, was later arrested in Old Farm Avenue, Sidcup, roughly two miles away from the scene of what police described as a “horrific attack”.
He remains in custody on suspicion of two attempted murders, having been spotted by a woman who then followed him in her car after recognising him from a police media appeal.
The statement from S&P Global – a financial services firm in Canary Wharf – added that colleagues were “extremely shocked and saddened” by the “senseless attack” on Ms Gos and her mother.
“We are here for whatever Ania and her family need and ask that the media respect their family’s privacy,” it concluded.
Neighbours have said her mother was visiting from Poland at the time of the attack.
According to Ms Gos’ LinkedIn profile, received an English qualification at King’s College London in 2008 after earning a Master’s degree in history from the University of Lodz in Poland.