AdMediary is an online performance marketing company that specializes in lead generation via the internet and phone for all major industry verticals. The company has offices in Valencia and Beverly Hills, California, as well as New York City.

Peter Klein President & Founder

Peter KleinPeter Klein is the President & COO of AdMediary, as well as a co-founder. He has 20 years of online and offline marketing experience and is a widely published industry thought leader. Most recently he was the SVP of Media for MediaWhiz, where he was responsible for the creation and growth of several performance marketing divisions, including the consistently top 5 ranked Blue Book affiliate network, MonetizeIt. Prior to joining MediaWhiz, Peter held both traditional and online marketing positions at companies such as Cablevision, Barnes & Noble, and Publishers Clearing House. Peter holds a BS in Business Management and Marketing from Cornell University. When he is not generating leads or speaking at conferences, Peter likes to spend time with his two daughters.

Art Welch CTO & Founder

Art WelchArt Welch is the CTO and a co-founder of AdMediary. He specializes in financial services and email marketing, and as such, has been the CTO of multiple successful online marketing companies for the last 15 years including ROI Analysis, MediaTrust, Rocket Power Media, and Vendare. Prior to the performance marketing world, Art managed teams at blue chip companies such as Symantec and Hewlett Packard. When he is not driving leads, Art enjoys rock crawling and other off-road sports.

Adam Trentacoste SVP, Media & Client Services

Adam TrentacosteAdam Trentacoste has been immersed in online marketing since 2004 when he began his career at a contextual advertising company. As Senior Vice President of Media and Client Services, Adam leads the development and growth of the AdMediary Performance Marketplace and media divisions. He also plays an integral role in building custom acquisition programs for AdMediary’s strategic clients. Adam most recently served as Senior Director of Affiliate Marketing at Affinion Group, a leading global provider of comprehensive marketing services and loyalty programs, where he grew the affiliate division almost 300% in just under 8 months. Adam holds a B.F.A. in Computer Graphics from Syracuse University. When he is not building online acquisition programs, Adam enjoys snowboarding and playing beach volleyball.

Kristin Mattern Operations Manager

Kristin MatternKristin Mattern is the Operations Manager at AdMediary. She works with clients, affiliates and the internal team to ensure that offers go live in a timely manner, run smoothly afterwards, and receive proper reporting. Kristin has experience in the digital media industry from working in marketing and editorial at, as well as numerous years of social media marketing experience. She earned her MA in English Literature from Hofstra University. When she takes the time to put her laptop down, she loves to hang out and play video games with her boyfriend Frank and their sphinx cat Finn, who likes to think he can join in the games.

Bella Popa Marketing Manager

Bella PopaBella Popa is the Manager of Social Media at AdMediary. She has 4 years of online marketing experience in affiliate marketing and social media, most recently with companies such as bluTonic and ClickXchange. Bella holds a BS in acting from Santa Monica College. When not keeping the world informed on clients and events via social media, Bella enjoys long walks on Santa Monica Pier.