Yes, CEO is a paid position. Mermaids is a registered charity so its accounts are online. The last set there are for the year to 31.3.18 and show seven trustees. The Charities Commission website currently shows three trustees, two from last year and one new one. The new one has no information showing on the Mermaids website.
SG is not a trustee but used to be according to the Mermaids website, before she became the first CEO three years ago. Salaries last year were £107,261. (Pensions etc are on top of that.) Unless I'm missing it I can't see anything in the report as published to show how many staff were employed or CEO's salary, but the Mermaids website says this:
In January 2016 we took on our first member of paid staff when we employed a CEO. This was followed in September 2016 with the addition of 2 part time Helpline posts, having being awarded a grant by Children in Need to develop and strengthen our core services, the helpline and email support provision. We have now made both these posts full time, and added a full time trainer to grow our training provision to organisations nationwide. Part of this post is funded by a Department of Education grant to deliver training into 36 schools by 2019. In May 2018 we added a Paul Hamlyn Foundation funded post of a Volunteer and Events Manager to grow the number of annual events and supporting volunteers, and in July 2018, following a successful bid to the Tudor Trust, we have added a legal post to improve our service delivery.
In August, to cope with the ever expanding growth in numbers of enquiries and the development of the charity, we employed a Chief Operating Officer, and in September, also a new post, a Moderation Support worker. These posts are integral to make sure that we are prepared for both the short and long term delivery of services, supporting transgender children, young people and their families. In October, we welcomed a fundraiser to our ever growing team, and watch this space for other future hires, as we are hopeful that we will be in a position to add further to our team over the next year.
That seems to indicate that in the year to 31.3.18 there were four full-time staff, SG + two helpline posts + a trainer. So the figure above is split between four full-time salaries. Not mega but enough to live on, I assume. I suppose she might have some media income as well.