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 12 of 20

• Todd Michael MccloneCRD 1591735 · Chicago, IL
  BrokerRegistration inactive
• Isabella Creek McdonaldCRD 7769993 · New York, NY
  Broker
• Richard James McdonaldCRD 2743136 · Chicago, IL
  Broker
• Katherine Henderson McgovernCRD 4277760 · New York, NY
  Broker
• Renee Elizabeth McgrailCRD 4671766 · Los Angeles, CA
  Broker
• Robert Francis McguireCRD 2630835 · New York, NY
  Broker
• Jennifer M MchaleCRD 2225936 · Chicago, IL
  Broker
• Joseph Daniel McintyreCRD 6129723 · Chicago, IL
  Broker
• Morgan Andrew MckayCRD 6494448 · London
  Broker
• Mark More MckinleyCRD 3020954 · Chicago, IL
  IA RegisteredBroker
  Disclosure event(s) on record
• Iain A MckinneyCRD 5871074 · Chicago, IL
  IA RegisteredBroker
• Scott Thomas MclaughlinCRD 2481285 · New York, NY
  Broker
• George Whitfield McleodCRD 7084032 · Charlotte, NC
  Broker
• Michele Anne McmahonCRD 6385701 · San Francisco, CA
  IA RegisteredBroker
• Joseph Daniel McmullenCRD 2298930 · Chicago, IL
  IA RegisteredBroker
• Diego MelingoCRD 5841483 · Zurich
  Broker
• Anna Lee MeltonCRD 7755843 · Chicago, IL
  Broker
• Lisette C MendozaCRD 4272716 · Chicago, IL
  Broker
• Melissa Miran MendozaCRD 5785445 · Chicago, IL
  IA RegisteredBroker
• Sarah Pritscher MercurioCRD 3045854 · Chicago, IL
  IA RegisteredBroker
• Ryan James MerkelCRD 4941596 · Chicago, IL
  Broker
• Matthew Christopher MetzCRD 8210146 · Charlotte, NC
  Broker
• Robert Lawrence MetzgerCRD 2993996 · Chicago, IL
  Broker
• Maarten Christiaan MeursCRD 7088343 · London
  Broker
• Ryan Connor MiddlestadtCRD 7933685 · Chicago, IL
  Broker
• Douglas John MilanesCRD 5730048 · New York, NY
  Broker
• Colin MiletCRD 7837597 · Chicago, IL
  IA RegisteredBroker
• Bradford Todd MillerCRD 6000349 · Chicago, IL
  IA RegisteredBroker
• Jack MillerCRD 7128092 · Chicago, IL
  IA RegisteredBroker
• Margaret Elizabeth MillerCRD 7591161 · Chicago, IL
  IA RegisteredBroker
• Willow MillerCRD 7410383 · Chicago, IL
  Broker
• Bennett Hutchins MillikenCRD 7766797 · Chicago, IL
  Broker
• Macgregor Lambton Nasmyth MilneCRD 7758163 · New York, NY
  Broker
• Myles Robert MinterCRD 6828832 · Boston, MA
  Broker
• Corey A MinturnCRD 2083166 · Chicago, IL
  IA RegisteredBroker
• Amanda Dearborn MitchellCRD 6641208 · Chicago, IL
  Broker
• Ronadev Timothy MitraCRD 3121951 · Chicago, IL
  IA RegisteredBroker
• Anthony Christopher MitranoCRD 2234425 · New York, NY
  Broker
• Jaime Alan MonnCRD 6089968 · New York, NY
  IA RegisteredBroker
• Sean MoranCRD 8099693 · Chicago, IL
  Broker
• Peter Michael MottCRD 341587 · Chicago, IL
  IA RegisteredBroker
  Disclosure event(s) on record
• Stephanie Lynn MountCRD 5559342 · London
  Broker
• Markus MuellerCRD 7445068 · Frankfurt Am Main
  Broker
• Louis Peacemaker MukamaCRD 8107838 · Chicago, IL
  Broker
• Tyler Alan MulierCRD 6835065 · Chicago, IL
  Broker
• Christopher MullinCRD 4080316 · New York, NY
  Broker
• Timothy Michael MulrooneyCRD 5361884 · Chicago, IL
  Broker
• Jeremy Gayle MurdenCRD 4996978 · Chicago, IL
  BrokerRegistration inactive
• Katherine MurphyCRD 5245218 · Chicago, IL
  IA RegisteredBroker
• Elise Bernadette MurrayCRD 4278115 · 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.