Earnscliffe Strategies Acquires Kaiser & Partners, Inc.

Sia Acquires Kaiser Associates

January 29, 2026

Consulting

Sia has acquired Kaiser Associates, a boutique strategy consulting firm headquartered in Washington, D.C., to launch a dedicated Corporate Strategy, Private Equity & M&A business line and accelerate its U.S. expansion. Kaiser Associates’ leadership (Ali Cumber, Paul Mumma and Jon Meyerholz) will join Sia, with Jon Meyerholz named Managing Partner of the new business line; the deal is intended to broaden Sia’s strategic advisory capabilities and scale Kaiser’s services globally.

Keystone Agency Partners Acquires Keystone Insurers Group

July 1, 2024

Insurance

Keystone Agency Partners (KAP) completed its acquisition of Keystone Insurers Group effective July 1, 2024. The deal brings Keystone Insurers Group’s franchise network into KAP’s PE-backed agency platform, expanding KAP’s regional footprint, distribution capabilities and service offerings to clients.

RLH Equity Partners Invests in Keystone Strategy LLC

July 29, 2021

Consulting

RLH Equity Partners has made a growth investment in Keystone Strategy LLC, a strategy, economics, and technology consulting firm that advises large enterprises, law firms and government agencies. The capital will support Keystone’s continued growth and expansion of its interdisciplinary capabilities across data architecture, AI, platform strategy and antitrust/economic advisory services.

WPP (Hill+Knowlton Strategies) Acquires JeffreyGroup

September 21, 2022

Marketing & Advertising

WPP, through its Hill+Knowlton Strategies network, has acquired JeffreyGroup, a leading independent corporate communications, public affairs and marketing consultancy focused on Latin America. The deal brings JeffreyGroup's ~330 employees and offices across Latin America into Hill+Knowlton, doubling H+K's footprint in the region and creating the largest global communications agency presence in Latin America.

Kearney Acquires Project Partners Management GmbH

January 14, 2025

IT Services

Global consulting firm Kearney has acquired Project Partners Management GmbH, a Germany-based specialist in SAP S/4HANA transformations, to extend its end-to-end SAP implementation and program management capabilities. The deal expands Kearney's digital and analytics offerings by adding technical delivery and program-excellence expertise for complex SAP transformations.

Permira Acquires Majority Stake in Acuity Knowledge Partners from Equistone

January 27, 2023

Professional Services

Funds advised by Permira have acquired a majority stake in Acuity Knowledge Partners from Equistone Partners Europe; Equistone will reinvest as a minority shareholder and Acuity's management remains significantly invested. Headquartered in London, Acuity is a provider of research, analytics and business intelligence to financial services firms worldwide; Permira plans to support further investment in teams, services and technology to drive growth and geographic expansion. The deal is subject to customary regulatory approvals and was expected to close in Q2 2023; financial terms were not disclosed.