Pinatubo is out of Lava Flow (Dalakhani), winner of the Listed Prix de la Seine over 11 furlongs and a half-sister to Strobilus (Mark of Esteem), second in the Gr.1 Gran Criterium.

Second dam Mount Elbrus (Barathea) was also a Listed winner, over 10 1/2 furlongs.

Third dam El Jazirah (Kris) is a half-sister to Rafha (Kris), winner of the Gr.1 Prix de Diane and an outstanding broodmare.

The family links Pinatubo to the sires Invincible Spirit and Kodiac, and also features Gustav Klimt (Galileo), James Garfield (Exceed and Excel), Mishriff (Make Believe), winner of the Gr.1 Prix du Jockey Club, Chinese White (Dalakhani), winner of the Gr.1 Pretty Polly S., and Pride of Dubai (Street Cry), winner of the Gr.1 Inglis Sires and the Gr.1 Blue Diamond S.

Lava Flow has a 2-year-old filly by Sea The Stars and a yearling filly by Teofilo.