Abstract: The article analyzes the theoretical foundations of M&A agreements of different companies. The types and forms of M&A agreements were investigated. Due to the conducted analysis on the sectoral distribution of M&A agreements, it was concluded that the industry leader in this area was the mechanical and industrial equipment production, which led the industry rankings in terms of amount and value of such agreements in 2018. The main factors of the increase of M&A processes in the insurance industry in 2018 are introduced in the paper – raise of interest rates, increase of the amount of available capital, improved conditions for the world economy development, tax reform in the USA. Much attention is also paid to M&A banking activities in the USA. The article points out that the healthcare sector has been dominated by the ten largest pharmaceutical companies with the highest return on investments, which spent an average of 35% on M&A of total investment volume in R&D and M&A in recent years.