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Willkie and Sidley Advise in $500M Equity Investment

April 18, 2016 Mark Curriden

© 2015 The Texas Lawbook.

By Natalie Posgate

(April 19) – Houston-based private equity firm Stonepeak Infrastructure Partners said Monday that it has backed a new management team to form a new midstream portfolio company with a $500 million investment.

The new Houston-based company, Sage Midstream Ventures, will pursue acquisition and development opportunities across the hydrocarbon value chain, including natural gas, natural gas liquids, crude oil, petrochemicals and refined products. It will have a broad focus on transportation, processing, fractionation, storage and marketing services.

Houston partner Michael De Voe Piazza of Willkie Farr & Gallagher led the deal for Sage and received assistance from Houston associate J. Clay Brett.

Stonepeak General Counsel Adrienne Saunders turned to Cliff Vrielink, a partner in Sidley Austin’s Houston office, to lead its end of the deal. Houston-based Sidley colleagues Vrielink received assistance from included corporate associates Katy Lukaszewski and Lindsey Jaquillard and tax partner Tim Devetski and associate Omair Khan. Chicago associate Teresa Reuter handled labor & employment matters.

Cliff Vrielink
Cliff Vrielink

Last month, Vrielink advised Stonepeak when it led a group of preferred investors that acquired Series A Preferred Stock from Houston-based Targa Resources Corp. for $1 billion.

Sage is headed by Greg Bowles, who will serve as president. Before joining Sage, Bowles was the executive vice president of Energy Transfer’s Lone Star NGL, a joint venture between Energy Transfer Partners and Regency Energy Partners. While at Lone Star, Bowles and John Steen, Sage’s vice president of business development, developed more than $1 billion of energy infrastructure projects.

Concurrent with the closing of the equity commitment, some of Stonepeak’s leadership will join Sage’s board of directors.

© 2014 The Texas Lawbook. Content of The Texas Lawbook is controlled and protected by specific licensing agreements with our subscribers and under federal copyright laws. Any distribution of this content without the consent of The Texas Lawbook is prohibited.

If you see any inaccuracy in any article in The Texas Lawbook, please contact us. Our goal is content that is 100% true and accurate. Thank you.

Mark Curriden

Mark Curriden is a lawyer/journalist and founder of The Texas Lawbook. In addition, he is a contributing legal correspondent for The Dallas Morning News.

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©2025 The Texas Lawbook.

Content of The Texas Lawbook is controlled and protected by specific licensing agreements with our subscribers and under federal copyright laws. Any distribution of this content without the consent of The Texas Lawbook is prohibited.

If you see any inaccuracy in any article in The Texas Lawbook, please contact us. Our goal is content that is 100% true and accurate. Thank you.

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