Tesla Inc.’s market value briefly crept above $100 billion for the first time, a threshold that will trigger a huge payout for Elon Musk if he can sustain the feat for months.

The electric-car maker’s shares climbed as much as 1.4% in after-hours trading Tuesday after closing the regular session up 7.2%. At the post-market high of $555.10, Tesla’s market capitalization was roughly $100.1 billion, just short of Volkswagen AG’s $100.6 billion.

Musk, Tesla’s billionaire chief executive officer, is eligible to receive the first tranche of an all-or-nothing pay award if the company’s market value stays above $100 billion for a sustained period. On paper, the first chunk of the award would net him about $346 million.