Tesla announced today that their board approved the management plan for a dividend stock split. They will request approval at the annual stockholder meeting and the Board will provide final approval. The last two meetings were held in Sept and October with the prior ones falling in June, it looks like it'll be later this year.
They haven't announced yet the desired ratio. The last split was a 5:1 in August 2020. You can read the rest of the SEC filing here: https://ir.tesla.com/_flysystem/s3/sec/000156459022011875/tsla-8k_20220328-gen.pdf
"On March 28, 2022, Tesla, Inc. (the “Company” or “Tesla”) announced its plan to request stockholder approval at the upcoming 2022 Annual Meeting of Stockholders (the “Annual Meeting”) for an increase in the number of authorized shares of common stock through an amendment to the Company’s Amended and Restated Certificate of Incorporation (the “Amendment”) in order to enable a stock split of the Company’s common stock in the form of a stock dividend. Tesla’s Board of Directors (“Board”) has approved the management proposal, but the stock dividend will be contingent on final Board approval. "