›Summary
Sidley Austin is mapped by Sartori across 22 offices in 11 countries (Global footprint), headquartered in New York. Headcount band: 1,500–2,500 attorneys. Strongest mapped practices: Litigation & Disputes, Corporate & M&A, Finance & Banking. It appears in 12 Ranking Atlas pages. Profile compiled from public facts, last verified 23 Jul 2026.
01 — Public record
Facts on file
Compiled from public sources. Figures are shown as bands where exact counts are not published; nothing here is provided by the firm.
Website
Largest mapped office
New York, US
Professionals
1,500–2,500 attorneys banded
Countries covered
11 via 22 offices
Office footprint — mapped metros
22 offices · 11 countriesPrincipal practices
Bold chips mark the firm’s deepest mapped practices (major or strong).
Seniority mix — banded, fee earners
≈700 partners · 200 counsel · 1100+ associates
Mapped from public bios and firm pages; exact counts are not published, so figures are shown as approximate bands.
Sartori Firm Index — footprint (a different lens from the Atlas tiers)
Global · coverage 3 of 354.9
Composite SFI
SFI sub-index · banded
85.3
Scale
SFI sub-index · banded
39
Reach
SFI sub-index · banded
10.8
Hiring
SFI sub-index · banded
The Sartori Firm Index measures footprint and momentum (scale · reach · hiring), not practice quality. It never assigns an Atlas tier, and the Atlas never reuses this number — the two lenses are deliberately separate.
02 — Where this firm is ranked
Ranking Atlas & Firm Index
No composite firm score is published. Atlas tiers are assigned per market or practice from public footprint and evidence; the Firm Index leaderboards are a separate footprint lens.
15 listings · Atlas tiers apply only within their own market or practice
| Listing | Type | Tier | |
|---|---|---|---|
| Best law firms in Texas | Atlas ranking | Highly active | → |
| Best law firms in United States | Atlas ranking | Market leaders | → |
| Best law firms in Dallas | Atlas ranking | Established | → |
| Best law firms in Germany | Atlas ranking | Notable in this field | → |
| Best law firms in Munich | Atlas ranking | Notable in this field | → |
| Best law firms in New York | Atlas ranking | Market leaders | → |
| Best law firms in Washington | Atlas ranking | Highly active | → |
| Best law firms in Chicago | Atlas ranking | Market leaders | → |
| Best law firms in North Carolina | Atlas ranking | Notable in this field | → |
| Best law firms in Baltimore | Atlas ranking | Notable in this field | → |
| Best law firms in Maryland | Atlas ranking | Notable in this field | → |
| Best private equity law firms in New York | Atlas ranking | Market leaders | → |
| Sartori Firm Index — overall | SFI leaderboard | — | → |
| Sartori Firm Index — United States | SFI leaderboard | — | → |
| Sartori Firm Index — hiring now | SFI leaderboard | — | → |
03 — Sources & verification Last verified 23 Jul 2026 · next review by 23 Aug 2026 · change log
Public sources
- 1 New York | Locations | Sidley Austin LLPfirm_website · 2026-07-20
- 2 Sidley Austin — attorney bios & practice pagesfirm_website · 2026-07-20
- 3 Sidley Austin — news & announcementsfirm_website · 2026-07-20
Know the limits of this data
- —Figures are bands, not audited counts; public sources lag reality by weeks or months.
- —Atlas tiers are Sartori’s independent editorial opinion — not the firm’s claim, and not a client-satisfaction measure.
- —No firm-level numeric score exists; Atlas tiers apply only within their own market or practice.
- —No third-party legal-directory band is used as an input.
Corrections from the firm or its representatives are reviewed within five working days.
Change log
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Discuss a mandate →Sidley Austin is profiled here independently by Sartori. This page is not affiliated with, endorsed by, or produced in cooperation with the firm; firm names are used for identification only and no logo or brand assets are reproduced. Rankings reflect Sartori’s editorial methodology and public mapping — they are not legal advice, nor a recommendation to instruct counsel.