Sidley Austin Promotes 52 Partners via New Nonequity Tier

3 min readSources: Above the Law

Sidley Austin promoted 52 partners, its largest class enabled by a nonequity tier.

Why it matters: Why it matters: Sidley’s nonequity partnership tier provides more flexible career paths, reflecting a broader industry trend in BigLaw to adjust partnership models and improve talent retention.

  • Sidley Austin promoted 52 partners effective June 1, 2026, its largest recent class.
  • The nonequity partnership tier was introduced in March 2026 to expand promotion opportunities.
  • Chair Yvette Ostolaza praised the new partners’ talents and client trust.
  • This model mirrors similar changes in law firms aiming to diversify leadership roles.

Sidley Austin announced the promotion of 52 attorneys to partner effective June 1, 2026, marking the firm’s largest recent partner class. This milestone follows the launch of a nonequity partnership tier in March 2026, which allows for more flexible advancement opportunities without immediate ownership stakes in the firm.

Yvette Ostolaza, Chair of Sidley Austin’s Management Committee, stated, "This group of newly elevated partners reflects a remarkable depth of talent and client commitment. Their promotion demonstrates our commitment to recognizing outstanding contributions across our firm." This quote was provided in the firm’s official press release dated March 15, 2026.

The nonequity partnership tier provides key distinctions from traditional equity partnerships. Unlike equity partners who share ownership and profits proportionally, nonequity partners maintain enhanced leadership roles and compensation without immediate equity. This arrangement offers career progression for those seeking senior status and influence without full equity investment.

Legal industry publications, including LegalTech News, have reported that this approach is growing in prominence among large law firms. Analysts highlight that nonequity tiers help firms balance leadership expansion and financial risk while adapting to evolving work models and client demands.

For example, a recent Law360 analysis notes that many BigLaw firms introduced nonequity partnerships over the past five years to improve retention and offer flexible paths for high-performing attorneys who might not pursue or immediately qualify for equity stakes.

While Sidley Austin has not publicly disclosed the detailed criteria for its nonequity partnership, its record promotion class underscores ongoing shifts in law firm partnership structures. This reflects a broader effort in the legal industry to modernize firm governance and career advancement approaches amidst competitive talent markets.

By the numbers:

  • 52 partners — Sidley Austin’s promoted class effective June 1, 2026
  • March 2026 — Launch date of Sidley’s nonequity partnership tier

Yes, but: Some attorneys and industry observers caution that nonequity tiers may create disparities in influence and compensation within partnerships, potentially affecting firm culture and cohesion.

What's next: Sidley Austin plans to evaluate its nonequity partner performance and impact on firm dynamics through the end of 2026, with potential refinements to the model based on those findings.