A full proposal, including seeking an investment bank that specializes in making markets of privately held company stocks, and underwriting the proposed share offering, and also including estimated costs, will be presented to the Board for its approval.
Also Im not sure what '...specializes in making markets...' means. Do you mean 'marketing,' 'selling,' 'brokering,' 'sourcing,' 'buying,' 'making initial public offerings (IPOs)'.... ? You could have some clearer language in that spot. Otherwise the sentence is fine except for a few comma errors.
Student or Learner