Key Takeaways
- • Mark Castiglia, Sidley Austin LLP partner, earned recognition as a Law360 Rising Star in private equity practice by co-leading advisory teams on three major Clearlake Capital transactions totaling significant deal activity across data, analytics, and software sectors.
- • Castiglia's portfolio includes Clearlake's take-private acquisition of Dun & Bradstreet Holdings Inc. (data and analytics), take-private acquisition of Alteryx Inc. (data analytics platform), and majority growth investment in ModMed (medical practice software-as-a-service provider).
- • The recognition reflects Castiglia's prominence among private equity legal practitioners under age 40, positioning him as a leading advisor on complex take-private and growth equity transactions in the technology and software verticals.
Summary
Mark Castiglia has established himself as a prominent private equity legal practitioner at Sidley Austin LLP through strategic advisory work on a series of high-profile transactions led by Clearlake Capital Group LP. His track record in recent years has earned him recognition by Law360 as a Rising Star among private equity practitioners under age 40, reflecting his emerging influence in the sector.
Castiglia's marquee engagements span multiple transaction types and industry verticals. He co-led Sidley's advisory team on Clearlake's take-private acquisition of Dun & Bradstreet Holdings Inc., a leading data and analytics company, demonstrating deep expertise in complex public-to-private transactions. His work expanded into the business intelligence sector with Clearlake's take-private of Alteryx Inc., a data analytics platform that serves enterprise customers. Additionally, Castiglia advised on Clearlake's majority growth investment in ModMed, a software-as-a-service provider specializing in medical practice management, showcasing his capability across both buyout and growth equity structures.
These transactions underscore Castiglia's value to institutional investors executing software and technology-focused private equity strategies. His recognition as a Rising Star reflects both his technical legal proficiency and his ability to manage multifaceted deal execution on significant platform acquisitions and growth financings.
Castiglia's marquee engagements span multiple transaction types and industry verticals. He co-led Sidley's advisory team on Clearlake's take-private acquisition of Dun & Bradstreet Holdings Inc., a leading data and analytics company, demonstrating deep expertise in complex public-to-private transactions. His work expanded into the business intelligence sector with Clearlake's take-private of Alteryx Inc., a data analytics platform that serves enterprise customers. Additionally, Castiglia advised on Clearlake's majority growth investment in ModMed, a software-as-a-service provider specializing in medical practice management, showcasing his capability across both buyout and growth equity structures.
These transactions underscore Castiglia's value to institutional investors executing software and technology-focused private equity strategies. His recognition as a Rising Star reflects both his technical legal proficiency and his ability to manage multifaceted deal execution on significant platform acquisitions and growth financings.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.