Departures follow loss of sales director and product development manager in June
Renewed speculation over OASys system's future

Open GI is set to lose two more senior staff only months after the loss of two others, Insurance Times had learned.
The most recent departures are senior business analyst Annette Napper and Imarket liaision Rachel Jones. Napper is understood to have been with Open GI for about 10 years.
These follow the departures of senior managers Paul Newman and James Betterton in the summer.
Newman is believed to have joined claims support company The Source, while Betterton thought to be working as premium finance manager at Towergate.
A source said: "We have seen the departure of the two best directors (James Gamble and Stephen James), two senior managers, and now two key individuals - all of this within a five-month period and as a result of the sale of Misys Insurance."
Misys rebranded as Open GI following an MBO by Montague Private Equity in March.
Gamble, sales director, and product development manager James quit the company following a disagreement over shares and strategy (News, 1 June).
A further industry source suggested Open GI might decide not to continue with OASys (Windows) and revert to its older Brooms system following Napper's exit.
Insurance Times reported in June that Open GI was "actively encouraging" OASys (Windows) users to return to its Brooms system. At the time, Open GI said that it had a "dual product strategy" which included both OASys and Brooms.
Simon Hughes, sales and marketing director at Open GI, said this week: "We do not believe changes to internal structure are of interest to the wider market.
"We employ 300 people within Open International and will continue to review and evolve our organisational structure to ensure we are best placed to meet our strategic objectives.
"A potential restructure involving two people will have no impact on our relationship with Imarket or the development of our OASys software."
Hughes added that investment in product development continued to increase to well over £4m per annum.
This, he said "includes integrating our commercial lines electronic trading platform, OASys Commercial, with Imarket and further developments to our Windows software".