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 19 of 20

• Ted Skyler TwymanCRD 7800523 · Chicago, IL
  Broker
• Spencer Lewis TaubeCRD 7420988 · Los Angeles, CA
  Broker
• Elisabeth ThomasCRD 6224918 · New York, NY
  Broker
• Nicholas Michael TiahnybikCRD 8028764 · Chicago, IL
  Broker
• Fran TonejcCRD 7146664 · Chicago, IL
  Broker
• Mary Lynn UbikCRD 2547616 · Chicago, IL
  IA RegisteredBroker
• Kaden UllomCRD 7925716 · Chicago, IL
  Broker
• Jeffrey UrbanCRD 7947257 · Chicago, IL
  IA RegisteredBroker
• Nicole UrbanCRD 7633647 · Chicago, IL
  Broker
• Thomas Joseph UjfalviCRD 8083368 · Chicago, IL
  Broker
• Natalie Marie UllmanCRD 7444214 · Chicago, IL
  Broker
• Harlem ValdezCRD 4930124 · New York, NY
  IA RegisteredBroker
  Disclosure event(s) on record
• Arthur Christiaan Adriaan Van Der GoesCRD 2863578 · Amsterdam
  Broker
• Molly Elizabeth Van GorpCRD 7953001 · Chicago, IL
  Broker
• Laura Van PeenanCRD 2599116 · Chicago, IL
  Broker
• Alexander VergaraCRD 8116178 · Chicago, IL
  IA RegisteredBroker
• Andrew Robinson VieheCRD 6016435 · New York, NY
  Broker
• Christopher Otto ViehlCRD 6646053 · Frankfurt Am Main
  Broker
• Jennifer Dacey ViglucciCRD 2711386 · Baltimore, MD
  IA RegisteredBroker
• Jaime Rafael VillalobosCRD 5779502 · Chicago, IL
  IA RegisteredBroker
• James Harrison Maclean VincentCRD 7349538 · Chicago, IL
  Broker
• John Charles VoetschCRD 6496542 · New York, NY
  Broker
• Christian Myles WaiteCRD 3079714 · Chicago, IL
  IA RegisteredBroker
  Disclosure event(s) on record
• David Samuel WakimCRD 7334718 · Chicago, IL
  Broker
• Patrick WalshCRD 7764446 · Atlanta, GA
  Broker
• Cathy WangCRD 7270656 · New York, NY
  Broker
• Laura Harrison WardCRD 1385878 · San Francisco, CA
  IA RegisteredBroker
  Disclosure event(s) on record
• Layton WardCRD 7800524 · Charlotte, NC
  Broker
• Michael Richard WardCRD 2699483 · Chicago, IL
  Broker
• Cooper Benjamin WarnerCRD 6108281 · Chicago, IL
  Broker
• John D WarrenCRD 4303999 · Denver, CO
  IA RegisteredBroker
• Mark Newman WarrenCRD 2815519 · Denver, CO
  IA RegisteredBroker
• Scott Bradford WarrenCRD 5583721 · Charlotte, NC
  Broker
• Gloria Gale WarshawCRD 4654337 · Chicago, IL
  Broker
• Charles Angus WatsonCRD 2917793 · Charlotte, NC
  Broker
• Daryl Shawn WeberCRD 3071044 · Atlanta, GA
  BrokerRegistration inactive
• Brian David WeinsteinCRD 2092545 · Chicago, IL
  Broker
• Ralph Caskle WeisgerberCRD 2601179 · New York, NY
  Broker
• John Baker WelchCRD 847226 · Chicago, IL
  IA RegisteredBroker
  Disclosure event(s) on record
• William Harrison WellmannCRD 7841688 · New York, NY
  Broker
• Bradley Thomas WennerCRD 7270769 · Chicago, IL
  Broker
• Michael Faust WertzCRD 5616115 · Chicago, IL
  IA RegisteredBroker
• William Andrew WestermeyerCRD 8277177 · Chicago, IL
  Broker
• James Bruce WhelihanCRD 828796 · Baltimore, MD
  IA RegisteredBroker
• James Justin WhiteCRD 1068557 · Chicago, IL
  BrokerRegistration inactive
• James Foster WhiteCRD 7935583 · Boston, MA
  Broker
• Kimberly Ann WhiteCRD 4802896 · Chicago, IL
  Broker
• Mitchell David WhitemanCRD 2640300 · Baltimore, MD
  IA RegisteredBroker
• Kurt Matthew WieseCRD 4202495 · Chicago, IL
  Broker
• Brian Christopher WilliamsCRD 4915690 · New York, NY
  Broker

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.