Many thanks to alvaropraxis and to camilopezf who have shared their photos with Keanu Reeves. Both photos were taken at the same venue. You can view the photos here and here.
Note: The photos were taken at a screening of the film Aftershock.
Update: Many thanks to pzaccony who has shared another photo taken with Keanu. It is here.
Update X2: Many thanks to @guatontagle who shared his photo with Keanu at a party after wards. It is here.
Many thanks to @kaorideane who shared her photo with Keanu on twitter. It is here.
Many thanks to paulbichon who shared a photo on intagram. It is here.