On the record · Investment firm
New Mountain Capital
PE firm focused on business services, healthcare, and technology
Research depth
Transactions sourced
At least one recorded transaction has a public source.
Record updated Oct. 10, 2026
Current ownership
Current owner not established
This record does not identify a current owner. That absence is a gap in the record, not a conclusion about ownership.
Ownership and transaction history
Chronology from recorded ownership periods, transactions and reviewed outcome events. Event order does not imply causation.
Oct. 1, 2012
ABB Optical Group, LLC / New Mountain Capital
Leveraged buyout · Completed · Recorded transaction
Aug. 22, 2017
Sparta Systems Inc. / New Mountain Capital LLC
Unknown · Completed · Recorded transaction
July 7, 2021
Ascensus Specialties LLC / New Mountain Capital
Leveraged buyout · Completed · Recorded transaction
April 3, 2017
Gelest, Inc. / New Mountain Capital, LLC
Minority investment · Announced · Recorded transaction
April 25, 2018
Medical Specialties Distributors / McKesson Corporation
Strategic acquisition · Announced · Recorded transaction
June 7, 2018
MAG Aerospace / New Mountain Capital, LLC
Minority investment · Announced · Recorded transaction
Dec. 12, 2018
Remedy Partners / New Mountain Capital
Minority investment · Announced · Recorded transaction
Oct. 14, 2021
Other · Announced · Recorded transaction
March 15, 2024
Grant Thornton LLP / New Mountain Capital, LLC
Minority investment · Announced · Recorded transaction
March 25, 2026
Qualus Corporation / Clearlake Capital Group, L.P.
Leveraged buyout · Announced · Recorded transaction
June 17, 2026
Commonwealth Associates, Inc. / New Mountain Capital, LLC
Leveraged buyout · Announced · Recorded transaction
Date not recorded
ClaimLogiq / New Mountain Capital
Minority investment · Announced · Recorded transaction
Date not recorded
Other · Completed · Recorded transaction
Date not recorded
Accolite Digital / New Mountain Capital
Other · Announced · Recorded transaction
Sources and evidence
Recorded transaction sources
These support a recorded transaction row. They have not passed the separate evidence-review process.
- R1ABB Optical Group - New Mountain Capital
New Mountain Capital · Investment-firm portfolio page · Retrieved Sept. 19, 2026
Supports: Recorded transaction
- R2New Mountain Capital Completes Investment in Sparta Systems | Thoma Bravo
Thoma Bravo · Company announcement · Retrieved Sept. 13, 2026
Supports: Recorded transaction
- R3New Mountain Capital to Acquire Sparta Systems from Thoma Bravo | Thoma Bravo
Thoma Bravo · Company announcement · Retrieved Sept. 13, 2026
Supports: Recorded transaction
- R4Ascensus - Ascensus
Ascensus Specialties · Company announcement · Retrieved Sept. 8, 2026
Supports: Recorded transaction
- R5New Mountain Leads Recapitalization of Ascensus Specialties - New Mountain Capital
New Mountain Capital · Company announcement · July 7, 2021
Supports: Recorded transaction
- R6New Mountain Capital Partners with Gelest - New Mountain Capital
New Mountain Capital · Company announcement · April 3, 2017
Supports: Recorded transaction
- R7New Mountain Capital Agrees to Sell Medical Specialties Distributors to McKesson - New Mountain Capital
New Mountain Capital · Company announcement · April 25, 2018
Supports: Recorded transaction
- R8MAG Aerospace Partners with New Mountain Capital - New Mountain Capital
New Mountain Capital · Company announcement · June 7, 2018
Supports: Recorded transaction
- R9Remedy Partners Announces Investment from New Mountain Capital - New Mountain Capital
New Mountain Capital · Company announcement · Dec. 12, 2018
Supports: Recorded transaction
- R10TRC Announces Growth Investment from Warburg Pincus | Warburg Pincus
Warburg Pincus · Company announcement · Oct. 14, 2021
Supports: Recorded transaction
- R11Grant Thornton to accelerate business strategy with investment from New Mountain Capital - New Mountain Capital
New Mountain Capital · Company announcement · March 15, 2024
Supports: Recorded transaction
- R12Clearlake to Acquire Qualus, a Pure-Play Power & Electric Grid Services Platform, from New Mountain Capital - New Mountain Capital
New Mountain Capital · Company announcement · March 25, 2026
Supports: Recorded transaction
- R13Clearlake to Acquire Qualus, a Pure-Play Power & Electric Grid Services Platform, from New Mountain Capital | Qualus
Qualus · Company announcement · Retrieved Sept. 5, 2026
Supports: Recorded transaction
- R14New Mountain Capital Invests in Commonwealth Associates, Names Hisham Mahmoud Board Chairman
Commonwealth Associates · Company announcement · Retrieved Sept. 1, 2026
Supports: Recorded transaction
- R15New Mountain Capital Invests in Commonwealth Associates, Names Hisham Mahmoud Board Chairman
Commonwealth Associates · Company announcement · Retrieved Sept. 1, 2026
Supports: Recorded transaction
- R16Commonwealth Associates Receives Investment from New Mountain Capital and Appoints Dr. Hisham Mahmoud as Chairman of the Board - New Mountain Capital
New Mountain Capital · Company announcement · June 17, 2026
Supports: Recorded transaction
- R17ClaimLogiq Announces Growth Investment from New Mountain Capital - New Mountain Capital
New Mountain Capital · Company announcement · Oct. 25, 2022
Supports: Recorded transaction
- R18DRB - New Mountain Capital
New Mountain Capital · Investment-firm portfolio page · Retrieved Sept. 13, 2026
Supports: Recorded transaction
- R19Accolite Digital Announces Strategic Partnership with New Mountain Capital - New Mountain Capital
New Mountain Capital · Company announcement · Feb. 16, 2021
Supports: Recorded transaction
What we do not know
These are gaps in the public record, not findings about the organization.
- The organization's operating status has not been researched.
- No current public ownership assessment has been published.
Help improve this record
Firsthand experience, public sources and corrections can help close the gaps above.