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 13 of 20

• Erin Maureen Murray ButlerCRD 5602360 · Chicago, IL
  Broker
• Sameer MustafaCRD 7799147 · New York, NY
  Broker
• Kevin Banyar MyersCRD 7297596 · Chicago, IL
  Broker
• Roger George MyersCRD 7767062 · Chicago, IL
  Broker
• Kyle MacalinaoCRD 6667540 · New York, NY
  Broker
• Matthew Andrew MardulaCRD 8085812 · Chicago, IL
  Broker
• Edward Rafael MarrCRD 8241898 · New York, NY
  Broker
• Christopher Lasley MasonCRD 6841022 · Chicago, IL
  Broker
• John Patrick McandrewCRD 6198714 · Chicago, IL
  BrokerRegistration inactive
• Edward MccarthyCRD 7685345 · Boston, MA
  Broker
• Benjamin Luke McfaddenCRD 6976122 · Chicago, IL
  IA RegisteredBroker
• Cody McgrathCRD 5383600 · New York, NY
  Broker
• Ryan Patrick McmichensCRD 7519162 · New York, NY
  Broker
• Jennifer Megan Kilpatrick MccarthyCRD 6097739 · Powell, OH
  IA RegisteredBroker
• Deepika MehtaCRD 7367811 · Denver, CO
  Broker
• Devvrut MehtaCRD 8109406 · New York, NY
  Broker
• Pratik R MehtaCRD 5509201 · San Francisco, CA
  Broker
• Timothy Chamberlin MeierCRD 7456829 · New York, NY
  Broker
• Sidney Sithembiso MhlangaCRD 7566592 · New York, NY
  Broker
• Kevin M MonacoCRD 2119652 · Los Angeles, CA
  IA RegisteredBroker
  Disclosure event(s) on record
• Cade William MorrisonCRD 7926938 · Chicago, IL
  Broker
• Jeffrey Raymond MunnCRD 7352659 · Charlotte, NC
  Broker
• David MurphyCRD 2263795 · Boston, MA
  Broker
• Sridhar MurthyCRD 7783497 · Boston, MA
  Broker
• Sebastien Cyrus NajiCRD 7045995 · Los Angeles, CA
  Broker
• Robert Paul NapoliCRD 2794651 · Chicago, IL
  Broker
• Noah NardoneCRD 6808411 · New York, NY
  IA RegisteredBroker
• Nazya Musarrat NawazCRD 6541569 · Chicago, IL
  Broker
• Joseph Steven NedossCRD 4901074 · Chicago, IL
  Broker
• Peter Austin NegronCRD 7393606 · New York, NY
  Broker
• Michael Edward NelsonCRD 3080444 · Denver, CO
  Broker
• Andrew Owen NicholasCRD 5832100 · Chicago, IL
  Broker
• Jennifer Elizabeth NicholsCRD 6391395 · Chicago, IL
  IA RegisteredBroker
• Mariusz NiedbalecCRD 2688191 · Chicago, IL
  IA RegisteredBroker
• Mirjana NikolicCRD 5011142 · Chicago, IL
  IA RegisteredBroker
• Daniel E NilssonCRD 5014258 · London
  Broker
• Alexandria Sophia Florence NoadesCRD 7800281 · Atlanta, GA
  Broker
• Joseph Casey NogalCRD 5356386 · Chicago, IL
  IA RegisteredBroker
• Charles Francis NolanCRD 6092212 · Chicago, IL
  Broker
• Margaret Niesen NolanCRD 6505756 · Chicago, IL
  Broker
• Luke James NorlandCRD 7335341 · Chicago, IL
  Broker
• Kathryn Caroline NovakCRD 7946644 · Chicago, IL
  IA RegisteredBroker
• Milosz Miles NowakCRD 7335393 · Chicago, IL
  Broker
• Carter Jon NelsonCRD 7380855 · Atlanta, GA
  IA RegisteredBroker
• James John O'connorCRD 6417377 · Chicago, IL
  Broker
• Jonathan Francis O'donnellCRD 6684929 · Chicago, IL
  Broker
• John Franklin O'tooleCRD 1732587 · Chicago, IL
  Broker
• Adam Scott OconnorCRD 4867574 · Chicago, IL
  Broker
• Michelle Carolyn Moglia OkeCRD 6372155 · New York, NY
  Broker
• Kelly Lynn OlivenCRD 2313120 · Chicago, IL
  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.