- 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
- 1908 Brands Acquisitions
- 192business Acquired By Experian
- 1933 Industries Acquisitions
- 1aim Acquired By Franz Schneider Brakel + Co KG
- 1C Acquisitions
- 1CLICK Acquired By Freshdesk
- 1Derrick Pty. Acquired By Enverus
- 1Dispatch.com Acquired By Manheim Auctions
- 1DocWay Acquired By Genoa Healthcare
- 1Energy Systems Acquired By Doosan Heavy Industries & Construction
- 1Form Online Pty Acquired By REA Group
- 1HQ Acquisitions
- 1MG Technologies Pvt. Acquisitions
- 1mind Acquired By Pegasystems
- 1Mobility Acquired By Qualys
- 1pm Acquisitions
- 1SEO Technologies Acquisitions
- 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
- 1st Bank Acquisitions
- 1st BASE - Oligonucleotide Business Acquired By Integrated DNA Technologies
- 1st BASE Pte Acquisitions
- 1st Choice Aerospace Acquired By VSE
- 1st Choice Delivery Acquisitions
- 1st Choice Hollywood Smiles Acquired By Northwestern Management Services
- 1st Credit Acquired By Intrum Justitia AB
- 1st Global Acquired By Blucora
- 1ST Group Acquisitions
- 1st Holdings Acquired By Monolith Holdings
- 1st Independence Financial Group Acquired By MainSource Financial Group
- 1st National Bank of Scotia Acquisitions
- 1st Pacific Bank of California Acquired By City National
- 1st Portfolio Holding Acquired By WashingtonFirst Bankshares
- 1st Secure IT Acquired By GM Security Technologies
