I understand that split shares would be sent as “dividend” so you existing share doesn’t split, you just receive extra shares based on ownership.
Tesla, Inc. (TSLA) (“Tesla”) announced today that the Board of Directors has approved and declared a five-for-one split of Tesla’s common stock in the form of a stock dividend to make stock ownership more accessible to employees and investors. Each stockholder of record on August 21, 2020 will receive a dividend of four additional shares of common stock for each then-held share, to be distributed after close of trading on August 28, 2020. Trading will begin on a stock split-adjusted basis on August 31, 2020.
I guess it doesn’t clarify fractionals. 