About us


Choosing the right partner

Mainstay traces its history back to Moore Stephens, a London-based firm that began operating in Russia in the 1980s. Mainstay (under the name of Moore Stephens) started its operations in the CIS back in 1989, when our London-based company assisted Sovcomflot in its reorganization program. By 1995 the list of our clients had significantly expanded, and the next logical step was the decision to open offices in major cities.

At the moment Mainstay includes 3 offices in Russia: in Moscow, in Vladivostok and in Yuzhno-Sakhalinsk.

Mainstay is proud of the unique expertise it has developed over the past 30 years. Moore Stephens was the first company to conduct audit to international standards in Russia, and since then our company has continued to maintain its preeminence in many aspects. The company is a member of the Sodruzhestvo Association, a self-regulatory body of auditors, as well as it is a member of the CPAB (Canadian Public Accountability Board) and the PCAOB (Public Company Accounting Oversight Board). Our clients include not only shipping companies and ports, but also banks, IT companies and companies operating in a wide range of industries.


  • the support on which everything else is held up
  • a strong rope that helps hold up a ship's mast.

The name of Mainstay reflects the role we play in supporting our clients in achieving their business and personal goals. In addition, it also maintains the company's close ties to the maritime industry for over a century. Our logo is a stylized depiction of two ships, the client and Mainstay, sailing parallel in the same direction. In many ways we are like an experienced pilot assisting a ship's captain into port, we understand the economic conditions we are sailing in and the hidden dangers they pose, but we also know the fairways that will lead the ship to a safe destination.

Our Values


We believe that honesty and openness is the best policy.


We believe in putting our best efforts into every project. We believe in unlocking potential, developing the best and helping to achieve the best possible results.


We believe that a team approach is the most impactful. We are proud of who we are.


We believe in the importance of unlocking potential, developing the best and helping to achieve the maximum possible results. We believe that any crisis presents unlimited opportunities.


We believe that every client, situation and team member is equally important to us. We value ourselves and our work and believe that there is much more in life than just work.


  • we adapt our services to the needs of our сlients;
  • international expert in the shipping industry;
  • international company with 30 years of experience in Russia;
  • we are continuously improving our skills and knowledge;
  • we use technologies that are relevant to each project;
  • we actively participate in the communities we join;
  • we provide real value for money;
  • we guarantee access to all team members, including executives;
  • deep immersion in the specifics of each business, project and situation.