Friday's dramatic failure of the bank, which focuses on tech startups, was the biggest since the 2008 financial crisis. Even small startups are getting in on the action to help others. Aleem Mawani, founder of Streak, a company with about 30 employees, tweeted Friday he would lend his personal cash free of any terms to other small startups worried about paying staff. Some, including Lowercarbon Capital, have offered loans to portfolio companies that have funds stuck at SVB. Gurson estimated "conservatively" that Altman has given more than $1 million to support other startups in similar need.

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