Maris, who leaves on Friday, will be replaced by GV managing partner David Krane, Recode said.
Project Ara: Google piecing together modular phone
A GV spokeswoman declined to comment on the report.
GV, previously known as Google Ventures, was founded in 2009 and has invested in more than 300 companies including Uber Technologies Inc and online retailer Jet.com, according to GV's website.
Outrage after Google ‘erases’ Palestine off world map
Alphabet's projects have seen some high-profile departures in recent months. Chris Urmson, chief technical officer for its self-driving car project, left last week, while Anthony Levandowski, product manager for the program, left earlier this year to co-found a startup.
Tony Fadell, a well-known Silicon Valley executive who was once expected to play a central role in Alphabet's hardware efforts, stepped down as chief executive of its Nest unit in June.
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