Lyft Inc. (NASDAQ:LYFT) shares sank in Tuesday's extended trading after the company released its fourth-quarter earnings report.   

Here's a look at the key figures from the quarter. 

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The Details: Lyft reported quarterly revenue of $1.6 billion, which may not compare to the analyst consensus estimate of $1.76 billion due to the impact of certain legal, tax and regulatory charges.

The company added an additional $1 billion to its share repurchase program.

Lyft reported the following fouth quarter highlights:

Gross Bookings of $5.1 billion, up 19% year over year.

Revenue of $1.6 billion, up 3% year over year, which includes a $168 million impact from certain legal, tax and regulatory reserve changes ...