The company was founded in 2016 and have been hosting sold out events since 2017. The owners of the promotion (according to Cagematch) were, and still are Greg Glorious and The Ladykiller.
Their first show took place on April 1, 2017 with an event known as GP MAX - First Showcase. Their most current event took place in September as of this post.
The promotion has two current titles. The major one is the Grapplemax Openweight Championship. There is also a Wrestle Square Cruiserweight Championship (India) that is being held by a Grapplemax wrestler.
For more on the current champions, please check the GPMAX page on the top and the right hand side of the blog.