The Udenna Corporation was incorporated on March 19, 2002. It was founded by Davao City businessman Dennis Uy who decided to establish the company after quitting his family businesses in Mindanao. The name "Udenna" was derived from Uy's full name, Dennis Ang Uy. Phoenix Petroleum was organized as the first unit of Udenna. It was first involved in managing oil terminals as the Davao Oil Terminal and Services Corporation in the early 2000s but was later renamed as Phoenix Petroleum in 2005 and went on retailing petroleum products. Phoenix Petroleum went public in 2007. To supplement Udenna's petroleum business, Chelsea Shipping Corporation was established in 2006 marking the corporation's entry in the shipping and logistics industry. Within the first year of the administration of President Rodrigo Duterte in 2016–2017, Udenna Corporation had various acquisitions. Udenna secured permission from the Philippine Amusement and Gaming Corporation to develop a casino resort near the Mactan-Cebu International Airport. It also entered the liquefied petroleum gas industry and acquired Enderun Colleges. In November 2017, Udenna took over the development of the former Global Gateway Logistics City at the Clark Freeport Zone in Pampanga which was later relaunched as Clark Global City. Mislatel, a consortium by Udenna and China Telecom won the government-sanctioned bidding that would allow the consortium to become the third major telecommunications provider in the Philippines challenging the duopoly of PLDT and Globe Telecom. Also in late 2018, Udenna Corporation began the process of acquiring Philippine Stock Exchange-listed ISM Communications Corp. with the intention of backdoor listing Udenna in the stock exchange. Upon the completion of the process Udenna Corporation will become a wholly owned subsidiary of ISM but ISM's shares will be effectively owned by Dennis Uy and his wife and ISM will be renamed Udenna Holdings Corporation.
Subsidiaries
;Oil, gas and retail
Phoenix Petroleum Philippines Inc. - is one of the main subsidiaries of Udenna
Chelsea Logistics & Infrastracture Holdings Corp. - also a holdings company itself deals with Udenna's business in the shipping and logistics industry.
;Real estate Udenna Corporation also manages the Clark Global City through its subsidiary
Clark City Global Corporation - which in turns hold the majority of Global Gateway Development Corporation, the leaseholder of the development in the Clark Freeport Zone.
PH Resort Group - PH Resorts Group is the holding entity for the gaming and hospitality business.
*Donatela Hotel - Luxury Resort located in Panglao, Bohol. Sits on 7.5 hectares of prime property. Acquired in November 2017, the resort features twelve private & luxurious villas.
*Emerald Bay Resort and Casino - Located in Mactan, Cebu.
*Emerald Bay Resort and Casino - was designed by world renowned Steelman Partners. The five star hotel and casino is targeted to open in 2020.
*The Base - Currently in the design and development phase, The Base is scheduled to open in 2022.
Located in a 4.4-hectare property in Clark Global City, Pampanga, The Base is set to be a premiere adventure-themed integrated resort. ;Retail and food
Eight-8-Ate Holdings, Inc.
*Wendy's Philippines - Philippine franchise of the American burger fastfood chain. Acquired in 2019 thru its subsidiary Eight-8-Ate Holdings.
*Conti's - a restaurant chain. Udenna acquired 70% stake of Conti's Holdings Corporation in 2018.
