- At Your Pace Online Acquired By American Safety Council
- AT&T - NEC TDM Voice CPE Business Acquired By Black Box
- AT&T - Vyatta Routing and Switching Technology Acquired By Ciena
- AT&T Government Solutions Acquired By Tyto Athene
- AT&T Mobility Acquisitions
- AT&T Teleholdings Acquisitions
- AT&T Wireline Broadband and Video Operations Acquired By Frontier Communications Parent
- AT&T Acquisitions
- AT&T - Wireless & Wireline Operations Acquired By Liberty Latin America
- AT&T - Data Center Colocation Operations Acquired By Brookfield Infrastructure Partners
- At&t - National Public Markets Business Acquired By Global Tel*Link
- At-Bay Specialty Insurance Acquired By At-Bay
- At-Bay Acquisitions
- AT.PRO tec Technologie-Team Acquired By thyssenkrupp AG
- ATA Airlines Acquired By Southwest Airlines
- Ata Bygg- Och Markprodukter AB Acquired By Hill & Smith
- ATA National Title Group Acquisitions
- Ataata Acquired By Mimecast
- Atacadão Distribuicao Comercio e Industria LTDA Acquired By Carrefour SA
- Ataccama Acquisitions
- ATADATA Acquired By Deloitte & Touche
- ATAG Verwarming Nederland BV Acquired By Ariston Thermo
- ATAI Life Sciences AG Acquisitions
- Atairos Mergers and Acquisitions
- Atalanta Acquisitions
- ATALIAN Global Services Acquisitions
- Atamis Acquired By Banyan Software
- ATAN Acquired By Accenture
- Atanaskovic Hartnell
- Atanor do Brasil Acquisitions
- Atar Capital Mergers and Acquisitions
- ATAR Labs Acquired By Micro Focus International
- Atar Sheffer
- Ataraxis Acquired By HR Path Group
- Atari SA Acquisitions
- Atavist Acquired By Automattic
- ATAX Acquisitions
- ATB Capital Markets
- ATB Indústria e Comércio de Adesivos S/A Acquired By Compagnie de Saint-Gobain S.A.
- ATBancorp Acquired By MidWestOne Financial Group
