- xCella Biosciences Acquired By Ligand Pharmaceuticals
- XCellAir Acquired By Fon Wireless
- Xcellence Acquisitions
- XcelleNet Acquired By Sybase
- Xcellerex Acquired By GE Healthcare
- Xcenda Acquisitions
- Xcentric Acquired By Right Networks
- Xcentric Mold & Engineering Acquired By Quickparts
- Xceptional Acquisitions
- XceptionalED Acquired By Verge Learning
- Xcerra Acquisitions
- Xcerra - Multiple Diamond Systems Acquired By TDK-Micronas
- Xcerra - Multiple Diamond Testers Acquired By SWINDON Silicon Systems
- Xcerra - Multiple PAx Testers Acquired By Giga Solution Tech.
- Xchange Leasing Acquired By Fair.com
- xChange Point - Energy and Power Solutions Acquired By Ameresco
- Xchange Telecom Acquired By NOVA Infrastructure
- Xchanging Acquisitions
- xCheck Acquired By FLYR Labs
- Xcipio Acquired By Fiserv
- Xcite Automotive Acquisitions
- Xcite Interactive Acquired By Versus Systems
- Xcitec Acquired By Emptoris
- XcitekSolutionsPlus Acquired By SunGard Data Systems
- XCL Resources Acquired By EnCap Investments
- Xclusive Staffing Services Acquired By Transition Capital Partners
- XCM Solutions Acquired By Wolters Kluwer Financial Services
- XCOM AG Acquired By Wirecard AG
- XConnect Global Networks Acquisitions
- XConnect Acquired By Enghouse Systems
- Xconomy Acquired By Informa
- Xcovery Holdings Acquisitions
- xDefenders Acquired By EarthLink Holdings
- XDegrees Acquired By Microsoft
- XDimensional Technologies Acquisitions
- XDM Royalty Acquired By Roxgold
- XDN Acquired By Fortinet
- XDuce Acquisitions
- XE.com Acquired By Euronet Worldwide
- Xebec Adsorption Acquisitions
