Quoting a source who wanted to remain anonymous, Reuters news agency said that Samsung offered to buy the Canadian company for $13.35-15.49 a share, higher than its current stock price.
Executives of the two companies met last week and discussed the matter, the source was quoted as saying.
Both companies, however, denied the report.
In a press release on its website, BlackBerry said it "has not engaged in discussions with Samsung with respect to any possible offer."
Shares of BlackBerry soared 29.7 percent to close at $12.60 on Wednesday.
BlackBerry's share in the global smartphone market has nosedived as a result of the ascent of Samsung Electronics and Apple Inc.
reporter
Park Sae-jin
swatchsjp@ajunews.com
