BARCELONA, Jan 19 (Reuters) - Grifols will send "very, very soon" its responses to a query made by Spain's CNMV stock market supervisor, in advance of reaching a ten-day deadline that expires next week, Grifols' board member Tomas Daga told Reuters on Friday. Grifols has said the CNMV sent on Jan. 10 a set of questions after a Gotham City Research report questioned the Spanish drugmaker's accounting and tumbled its share price. The company was given ten working days to respond.

Asked if the company would respond as early as Friday, Daga declined to comment.

Daga, who sits on Grifols' audit committee, said the CNMV asked Grifols to explain certain transactions it had already sought more details about in 2019. That year, it asked for accounting information related to the 2018 sale of plasma companies Haema and BPC to Scranton Enterprises, an investment vehicle linked to the founding Grifols family.

Following the Gotham City report, Daga, who is also a shareholder of Scranton, said he believed Scranton should offer public explanations "at some point". He said that Scranton acquired Haema and BPC to help Grifols, and that it has no need to keep them. (Reporting by Joan Faus, editing by Inti Landauro)