The party took place at Ellison's restaurant Nikita, a pricey Mediterranean eatery that looks out over the ocean in Malibu, California. Here, Vanity Fair's Julie Miller and Haute Living's Laura Schreffler enjoy the patio with another guest.
Ellison hosted the party with girlfriend Nikita Kahn, an animal rights activist and philanthropist.
Kahn gave a rallying speech during the party. "Recently, we had a lot of very young seals come up on the beach in Malibu because they were too small and weak to feed themselves,” she said. "The California Wildlife Center came to the beach, picked them up, fed them, and cared for them until they were big enough and strong enough to be released back into the wild. I didn't even know an organization like that existed. I was so impressed with how they responded to the emergency, I decided I had to get involved."
The restaurant was beautifully set for the occasion.
next slide will load in 15 secondsSkip AdSkip AdEllison seemed to really enjoy the company.
Oscar-winning director Kathryn Bigelow was among the celebrities who turned out to support the cause.
Ellison's daughter Megan has produced a number of films, including "Zero Dark Thirty," which Bigelow directed.
Actor Bradley Cooper made an appearance with girlfriend Suki Waterhouse.
Cooper and Ellison shared a chat.
next slide will load in 15 secondsSkip AdSkip AdAnd singer Charles Perry put on an animated performance.
Violinist Caroline Campbell and Grammy-winning trumpeter Chris Botti also performed.
As did band Fairground Saints.
Ellison drank mojitos with stuntman Nash Edgerton.
While some guest drank champagne out on the deck.
next slide will load in 15 secondsSkip AdSkip AdPro surfer and fellow Malibu resident Laird Hamilton socialized with his wife, volleyball player Gabrielle Reece.
NetSuite CTO and former Oracle developer Evan Goldberg relaxed on the deck with his mother, Liz Mayers.
But Goldberg didn't miss the chance to joke around with Ellison and some of his friends.
"American Hustle" producer Jonathan Gordon attended, as did wife and actress Catherine McCord and agent Brian Siberell.
Ellison was the life of the party throughout the evening.
next slide will load in 15 secondsSkip AdSkip AdWant to see how another tech billionaire parties?