BlackBerry co-founder Mike Lazaridis, who is likely just as responsible for BlackBerry’s early success as he is for its collapse, on Thursday filed a Schedule 13D with the U.S. Securities and Exchange Commission revealing that he recently increased his stake in the company. Lazaridis had previously held a 5.7% stake in BlackBerry, and he now owns 8% of the company. The document also reveals that Lazaridis and fellow BlackBerry co-founder Douglas Fregin have entered into an agreement to “explore the possibility of submitting a potential joint bid” for BlackBerry, which is still on the ropes as rumors swirl that Fairfax Financial will not be able to secure funding for its proposed $4.7 billion buyout. BlackBerry shares spiked roughly 1% to $8.19 on the news after having been hovering in the red around $8.06 all morning.

Zach Epstein has worked in and around ICT for more than 15 years, first in marketing and business development with two private telcos, then as a writer and editor covering business news, consumer electronics and telecommunications. Zach’s work has been quoted by countless top news publications in the US and around the world. He was also recently named one of the world's top-10 “power mobile influencers” by Forbes, as well as one of Inc. Magazine's top-30 Internet of Things experts.