William Blair & Company L.L.C.

Firm record

As recorded in SEC IAPD

Firm CRD

1252

SEC number

801-688

Firm type

RIA

Assets under management

$64.3B as of Mar 31, 2026

Website

www.williamblair.com ↗

Phone

312-236-1600

Address

150 North Riverside Plaza, Chicago, IL, 60606

Advisors at this firm

987 in our index · page 10 of 20

• Arjan Singh KocharCRD 7783249 · Chicago, IL
  Broker
• Elza Georgieva KoevaCRD 6400355 · London
  Broker
• Kethan KommanapalliCRD 7798947 · Chicago, IL
  Broker
• Evan Fulton KornackCRD 5242889 · Boston, MA
  Broker
• Alexandra Marie KorunaCRD 7821785 · Chicago, IL
  Broker
• Dimitry Victorovich KoupriaynovCRD 4132996 · Chicago, IL
  Broker
• Jack KovachCRD 7755817 · New York, NY
  Broker
• Alexandra Rose KozikowskiCRD 7755058 · Charlotte, NC
  Broker
• Jacob KrahenbuhlCRD 7496847 · Chicago, IL
  BrokerRegistration inactive
• Lauren Helen KramerCRD 5990904 · Chicago, IL
  IA RegisteredBroker
• Sander Frederik KramerCRD 6550279 · Amsterdam
  Broker
• John Charles KregerCRD 2330972 · Chicago, IL
  Broker
• Paul KropkeCRD 2572796 · Chicago, IL
  Broker
• Andrew Talman KrossCRD 5666325 · Chicago, IL
  IA RegisteredBroker
• Max Joseph KruszeskiCRD 7931182 · Chicago, IL
  Broker
• Scott Anthony KrzeminskiCRD 2386454 · Chicago, IL
  IA RegisteredBroker
• Tyler Dunham KuehlCRD 7922501 · New York, NY
  Broker
• Elias KuhnsCRD 7380642 · Chicago, IL
  IA RegisteredBroker
• Charles Edward Alan KuroseCRD 6670562 · Chicago, IL
  Broker
• Lauren Kelly KurzCRD 7422547 · Chicago, IL
  IA RegisteredBroker
• Samuel KusswurmCRD 7077028 · Chicago, IL
  Broker
• Nancy Jo KwainCRD 1713212 · Chicago, IL
  IA RegisteredBroker
• Theresa Marie KwiecinskiCRD 2907883 · Chicago, IL
  IA RegisteredBroker
• Andrew N KirkpatrickCRD 7397942 · Chicago, IL
  Broker
• Andrew KleinCRD 7149238 · Chicago, IL
  Broker
• Erik Joshua KlugCRD 6950836 · Atlanta, GA
  Broker
• Benjamin Ross KohenCRD 6811531 · Chicago, IL
  Broker
• Emma Jane KozalCRD 8198422 · Chicago, IL
  Broker
• David Hayden KrausCRD 8277133 · Charlotte, NC
  Broker
• David T. KuziaCRD 2389596 · Chicago, IL
  IA RegisteredBroker
• Albert Joseph LacherCRD 300194 · Denver, CO
  IA RegisteredBroker
• Marc Philippe LacherCRD 4905353 · Chicago, IL
  IA RegisteredBroker
  Disclosure event(s) on record
• John Merrill LaffertyCRD 5205509 · Chicago, IL
  IA Registered
• Isidora K LagosCRD 4315306 · Chicago, IL
  IA RegisteredBroker
• Alexander Mcadams LaneCRD 2266334 · Stamford, CT
  IA RegisteredBroker
• Christopher Sven Joseph LaneCRD 2769724 · San Francisco, CA
  Broker
• Louise LaneCRD 301734 · Chicago, IL
  IA RegisteredBroker
• Mark Raymond LaneCRD 3045002 · Chicago, IL
  Broker
• Leo John Bertrand LangCRD 6709592 · London
  Broker
• Kenneth L LangstonCRD 2404071 · Chicago, IL
  IA RegisteredBroker
• Briana LantuhCRD 8142562 · Baltimore, MD
  Broker
• Matthew Richard LarewCRD 6119811 · Chicago, IL
  Broker
• Patricia Ann LauerCRD 2483155 · Chicago, IL
  Broker
• Brandon Stuart LawrenceCRD 6550678 · New York, NY
  Broker
• Yves Firmin LeclercCRD 7489957 · Zurich
  Broker
• Eric Daniel LedererCRD 6667689 · Chicago, IL
  Broker
• Chu-An LeeCRD 5575727 · Chicago, IL
  Broker
• Nicole Marie LenaCRD 5299530 · Boston, MA
  Broker
• Jakub Adam LenartCRD 7699012 · London
  Broker
• Matthew LeuerCRD 7656988 · Chicago, IL
  IA RegisteredBroker

Source & corrections

Where this page comes from

Advisor registration data on this site is reproduced from the SEC's Investment Adviser Public Disclosure (IAPD) system and FINRA's BrokerCheck. Those systems are the official records; this site is not. We do not alter the factual content of the records we reproduce.

Data compiled Aug 21, 2026. Source: ADV_BULK. Your use of BrokerCheck data reproduced here is subject to FINRA's Terms of Use.