Tesla Inc. will seek investor approval to increase its number of shares to enable a stock split in the form of a dividend, the electric-car maker said on Monday, sending its shares up about 5 percent. The plan came as the company suspended its Shanghai factory amid COVID-19-related lockdown measures and its artificial intelligence head took a sabbatical as the company aims to achieve full self-driving capability this year. The proposal, first announced on Twitter, has been approved by its board and shareholders will vote on it at an annual meeting. The stock split, if approved, would be the latest after a five-for-one split in August 2020 that made Tesla shares cheaper for its employees and investors. Following a pandemic-induced rally in the technology shares, Alphabet Inc, Amazon.com Inc., and Apple Inc, too, have in the recent past split their shares to make them more affordable. Tesla debuted at $17 …