Here's Jack Dorsey's new title

Dorsey co-founded the payments business as Square in 2009, which was renamed Block in December

Technology entrepreneur and former Twitter CEO Jack Dorsey has a new title: Block Head.

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A regulatory disclosure Friday from digital payments company Block Inc. says that its co-founder Dorsey is changing his role from Block's CEO, president and chairperson to "Block Head and Chairperson," effective immediately.

Jack Dorsey Twitter

Jack Dorsey, co-founder of Block Inc. and former chief executive officer of Twitter Inc. ( Eva Marie Uzcategui/Bloomberg/ / Getty Images)

It's a semantic change only and there "will be no changes in Mr. Dorsey’s roles and responsibilities," the filing said.

Ticker Security Last Change Change %
SQ BLOCK INC. 73.50 -3.49 -4.53%

Dorsey co-founded the payments business as Square in 2009. It was renamed Block Inc. in December to reflect its growth to encompass the Tidal music streaming service, Cash App and TBD54566975, a financial services platform primarily focused on Bitcoin.

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Dorsey also co-founded Twitter and was its CEO until stepping down in November. Twitter has said he will remain on its board until May.

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Dorsey's title change resembles a Tesla filing last year in which CEO Elon Musk added "Technoking of Tesla" to his official role at the electric car maker. The two know each other — Musk is now offering to buy Twitter for more than $43 billion.