- 18 Week Support Acquired By Summit Partners
- 180 Connect Acquired By DIRECTV
- 180 Health Partners Acquired By Mindoula Health
- 180 Medical Acquisitions
- 180byTwo Acquired By Anteriad
- 180Commerce Acquired By Cart.com
- 1818 Platinum Triangle Apartment Community Acquired By UDR
- 186 Communications Acquired By FirstLight Fiber
- 19 Select Student Housing Properties and Development Property Acquired By American Campus Communities
- 1901 Group Acquired By Leidos Holdings
- 1908 Brands Acquisitions
- 192business Acquired By Experian
- 1933 Industries Acquisitions
- 1aim Acquired By Franz Schneider Brakel + Co KG
- 1C Acquisitions
- 1CLICK Acquired By Freshdesk
- 1Concier Acquisitions
- 1CRM Systems Acquired By Converge Technology Solutions
- 1Derrick Pty. Acquired By Enverus
- 1Dispatch.com Acquired By Manheim Auctions
- 1DocWay Acquired By Genoa Healthcare
- 1E Acquired By The Carlyle Group
- 1Energy Systems Acquired By Doosan Heavy Industries & Construction
- 1Form Online Pty Acquired By REA Group
- 1HQ Acquisitions
- 1Life Acquisitions
- 1Life Healthcare Acquisitions
- 1MED SA Acquired By Apposite Capital
- 1MG Technologies Pvt. Acquisitions
- 1mind Acquired By Pegasystems
- 1Mobility Acquired By Qualys
- 1Password Acquisitions
- 1plusx AG Acquired By TripleLift
- 1SEO Technologies Acquisitions
- 1Source Safety and Health Acquired By TRC Companies
- 1Spatial Acquired By Azini Capital Partners
- 1st Alaska Insurance Acquired By HUB International
- 1st Alliance Payroll Services Acquired By Digital Insurance
- 1st Auto Transport Directory Acquired By Dealertrack Technologies
- 1ST Bancorp IN Acquired By German American Bancorp
