SIPP provider Pointon York has announced it has received "several" approaches for a takeover.
The deadline for indicative proposals is mid-October and final proposals by mid-November.
The firm said interested parties should contact Quayle Munro.
Pointon York was set up in 1971 by chairman Geoff Pointon (pictured).
It launched its first SIPP in 1990 and became exclusively a SIPP provider in 2001.
The firm bought two SIPP companies from EFG Private Bank Ltd in 2009 and 2011.
It currently offers an e-SIPP, a single investment SIPP, a family trust, a corporate SIPP and, most recently, a sharia-compliant SIPP.
In 2010, the provider issued shares in order to drum up a £1.75m cash injection.
The news comes after it emerged fellow SIPP provider Hornbuckle Mitchell will be bought out by insurer LV=.
‘Most significant’ upgrade since launch
Changes happening over coming months
Had accepted British Steel business
Aimed at HNW clients and family groups
Set for 1 April 2019