Sidley Adds Arman Zadeh as Investment Funds Partner
The Los Angeles-based partner joins from Kirkland & Ellis LLP, where he practiced in the same group.
Updated on Nov. 9, 2026 in Professional Services
Sidley has added Arman Zadeh as a partner in its Investment Funds group in Los Angeles. Zadeh joins from Kirkland & Ellis LLP, where he was a partner in the Investment Funds practice group.
Why it matters
The hire extends Sidley's recent expansion of its Investment Funds practice, which has added partners across several offices over the past two years. The move reflects continued competition among large firms for lawyers advising private fund sponsors.
Sidley has approximately 2,300 lawyers and 160 years of experience, with over 150 lawyers in its Investment Funds practice worldwide. The announcement does not disclose Zadeh's book of business or the terms of his move.
The players
Sidley Austin LLP
Sidley Austin LLP is a global law firm with roughly 2,300 lawyers and 160 years of practice history.
Arman Zadeh
Arman Zadeh is a private funds lawyer who previously practiced as a partner at Kirkland & Ellis LLP.
Kirkland & Ellis LLP
Kirkland & Ellis LLP is a large international law firm known for its private equity and investment funds practice.
The details
Zadeh's practice focuses on the formation, structuring, and operation of private closed-end investment funds. He advises fund sponsors on economic and governance matters, co-investment arrangements, and separately managed accounts.
Timeline
Over the past two years, Sidley added partners to its Investment Funds practice in Los Angeles, Houston, New York, Chicago, London, Boston, and Palo Alto.
Sidley announced Zadeh's arrival as partner on November 9, 2026.
Market Landscape
Sidley's Investment Funds group has grown through a series of partner additions across Los Angeles, Houston, New York, Chicago, London, Boston, and Palo Alto over the past two years. The Zadeh hire extends that buildout as large firms compete for lawyers who advise private fund sponsors.
For businesses and investors working with private fund sponsors in Los Angeles, the hire adds another Investment Funds partner to a firm with a growing West Coast presence. The announcement itself does not change fees, service availability, or client terms.
The takeaway
Lateral partner moves like this one show how law firms are building out specialized fund practices across multiple cities. Clients seeking fund formation or co-investment advice should watch how these teams are organized as firms compete in the sector.
Further reading
For related coverage, see Professional Services in Los Angeles.
