JH

Jeff Hart

Founding Partner at Ringleader Ventures

Chicago, US

About

Jeff Hart leads RelaDyne's strategic market expansion and product partnerships. Drawing on his relationships with industry-leading lubrication-related businesses in diverse market segments, Jeff is building new partnerships for RelaDyne that spur the company's growth and expand its geographic reach—while broadening its offering of products and services to create greater customer value. A proven entrepreneur, Jeff has more than 14 years of business experience in the petroleum industry in operations, marketing, finance, and applied technology. Since 2003 he has served as president of Mid-Town Petroleum, a company started in 1955 by Jeff's father-in-law. During Jeff's tenure, the company became one of the largest lubricant distributors in the Midwest, growing from $4 million in sales to $40 million and from 7 employees to 60. Jeff began his career with the management development program of Enterprise Rent-A-Car. From there, he founded his first business, Oilspot.com, Inc., in 1998, rai

Position in the VCSift Database

  • 2 investors at Ringleader Ventures are tracked.
  • 473 investors hold the Founding Partner role in VCSift. Jeff Hart is one of them.
  • 1,718 investors are based in Chicago, Illinois, United States.

Data sourced from 410,343 investor profiles. Updated July 2026.

Investment Focus

Location
Chicago, US

Contact Information

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