Chief Executive Elon Musk said on Twitter he is considering taking Tesla Inc private at US$420 per share as the electric vehicle maker faces the challenges of fast growth and financial constraints, sending its shares up more than 6 per cent.
"I don't have a controlling vote now & wouldn't expect any shareholder to have one if we go private", Musk said in a follow-up tweet.
"Am considering taking Tesla private at $420".
A deal at $420 per share represents a 22.8% premium to Tesla's closing price on Monday, valuing the company at about $72bn.
Tesla did not immediately respond to a request for confirmation or clarification. The company had a market value of $58 billion as of Monday's close.More news: Total lunar eclipse from today
Unlike publicly listed companies, private firms do not have to share details of their finances and operations.
On April Fool's Day, Mr Musk, who owns nearly 20% of the company, joked on Twitter about Tesla going bankrupt.
While Musk is known for making erratic tweets, he tweeted "420" in a reply to Fox Business anchor Liz Claman, following up on his initial tweet.
Shares in Tesla were up sharply following the tweet, trading at $363 at the time of writing. Musk has had feuds with regulators, critics and reporters, and questions remain about Tesla's production and manufacturing difficulties, long-term demand for its cars and uncertainty over funding.
Tesla has spent millions as it reached a goal of producing 5,000 Model 3 sedans per week by the end of June.