The Williams Cos. board overreacted to threats posed by the Covid-19 pandemic when it adopted an anti-takeover “poison pill” triggered when any investor bloc reached a 5% ownership threshold, a Delaware judge ruled Friday, saying the “unprecedented” measure was “not proportional.”

U.S. regulators are engaging in the stock market’s version of whack-a-mole -- racing to suspend shares of companies with dubious prospects that have been hyped to the moon on social media.

Bloom Energy Corp. must turn over files to an investor weighing whether to sue over claims that the company underestimated its fuel cell servicing costs by $2.2 billion and downplayed greenhouse gas emissions that put it at risk of losing critical federal subsidies, a Delaware Chancery Court judge ruled.

Citigroup Inc.’s Michael Corbat warned that the world of banking is quickly changing in his final message as chief executive officer to the bank’s hundreds of thousands of employees.

Mark Machin quit as head of Canada Pension Plan Investment Board after he went to the United Arab Emirates and received a Covid-19 vaccine, defying guidance from Justin Trudeau’s government to avoid international travel.

Intel Corp. scored a preliminary win Friday in a fight with Sanyo Electric Co. over patents at the center of a separate infringement case involving Lenovo laptops built with Intel wireless cards, when a Delaware judge tentatively ruled the cards were authorized by a license from Sanyo.

Cue Health Inc. and Moderna Inc., two companies watching their businesses grow amid the coronavirus pandemic, have recruited several lawyers to their ranks.