The document shows Mr MacSween received £558,829 in the 12 months to March 31 this year, which was up from £514,603 for the previous financial year.
Glasgow based Iomart, which specialises in internet hosting and cloud computing, booked an 11 per cent rise in pre-tax profits to £9.7 million in the most recent year on the back of revenues growing 29 per cent to £55.6 million.
The annual report shows Mr MacSween received a basic salary of £267,000, a bonus of £262,000, pension contributions of £26,700 and other benefits worth £3,129.
As well as that the document points out he received £286,000 of dividends, an increase from £174,000 in the prior year.
Finance director Richard Logan received a total package worth £333,806, up from £298,058.
This included a basic salary of £170,000, bonus of £144,500, pension of £17,000 and other benefits of £2,306.
Alongside that operations director Sarah Haran also saw her remuneration rise from £315,525 to £331,846.
She received a bonus of £155,000 on top of a basic salary of £160,000, pension of £16,000 and benefits worth £846.
Chairman Ian Ritchie saw his fee stay flat at £50,000. Fellow non-executive director Chris Batterham also saw no increase and received £30,000.
Crawford Beveridge, a former Scottish Enterprise chief executive, got a fee of £25,000 for his role as a non-executive at Iomart.