- 1Energy Systems Acquired By Doosan Heavy Industries & Construction
- 1Form Online Pty Acquired By REA Group
- 1HQ Acquisitions
- 1Life Healthcare Acquisitions
- 1MED SA Acquired By Apposite Capital
- 1MG Technologies Pvt. Acquisitions
- 1mind Acquired By Pegasystems
- 1Mobility Acquired By Qualys
- 1Password Acquisitions
- 1pm Acquisitions
- 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
- 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 Sage Dental Management
- 1st Constitution Bancorp. Acquired By Lakeland Bancorp
- 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 Patriot Insurance Services Acquired By World Insurance Associates
- 1st Portfolio Holding Acquired By WashingtonFirst Bankshares
- 1st Secure IT Acquired By GM Security Technologies
- 1st State Insulation Acquired By Installed Building Products
- 1st United Bancorp Acquisitions
- 1st West Mergers & Acquisitions LLC
- 1stdibs.Com Acquisitions
- 1StopXBRL Acquired By Diversified Global Graphics Group
- 1stVision Acquired By iMAGE S
