A unit of S&T Bank has formed an alliance with Oklahoma-based Heritage Trust Co. to provide financial services for landowners who lease their property to natural gas drilling companies in the Marcellus Shale. S&T Wealth Management services will include lease and lease renewal offers and negotiation; negotiation of surface damage rights; and verification, monitoring and administration of royalty payments. Indiana, PA-based S&T Bank operates 51 offices in 10 counties in western and central Pennsylvania, including Allegheny, Butler and Westmoreland counties.