The stock is trading below Fairfax's tentative offer on fears that the deal won't go through or that the final price will be lower. Shares of the company rose US9c, or 1.1 per cent, to US$8.20 yesterday.
The BlackBerry, pioneered in 1999, was once the dominant smartphone for on-the-go business people and other consumers. President Barack Obama couldn't bear to part with his BlackBerry. Oprah Winfrey declared it one of her "favorite things".
But then came a new generation of smartphones, starting with Apple's iPhone in 2007.
The BlackBerry suddenly looked ancient. The company's sales slumped, it lost billions in market value and it recently announced layoffs of 4500 workers, or 40 per cent of its global workforce.
As the Ontario company's troubles grew, Lazaridis stepped down as co-chief executive in January 2012. He remained on the board until this year. Lazaridis recruited Fairfax head Prem Watsa to join the company's board when he stepped aside as chief executive.
It remains to be seen whether Lazaridis joins Watsa's bid or bids on his own, said BGC analyst Colin Gillis. The stock didn't rise much because it was widely expected that Lazaridis might make a bid, he added.
Gillis said that it must hurt Lazaridis to see reports that BlackBerry might be broken up and sold in pieces.
"It's his baby. If anyone is going to see value in the company it's him," Gillis said.
"He founded this company. I'm sure it's not pleasant to watch the spot it is in and he sees value in it. It must hurt to see reports that this thing is going to get ripped up and fed to the vultures."
Lazaridis would not comment beyond the filing.
AP