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William Mack

Vice President at Executive Financial Services in Livonia, MI

Investment adviser registrationUpdated

William Mack is Vice President of Executive Financial Services Inc, an investment adviser managing $199M, and works from its Livonia, MI office. William Mack has been registered as an investment adviser representative through Executive Financial Services since 20 September 2012, has 16 years in the industry across 3 firms and has passed the Series 6, Series 63, Series 22 and Series 7.

16
Years in industry
14
Years at firm
3
Adviser firms
2
States registered

From the IAPD record, checked 22 October 2026SEC record

Career

William Mack has been Vice President of Executive Financial Services since January 2008, is a control person of the firm and directly owns between 25% and 50% of it.

Executive Financial Services Inc is a Livonia, MI firm with $199M under management, 189 clients and 3 advisers across 2 offices, as of its March 2026 filing.

William Mack’s longest registration is the current one, 16 years at William Mack & Associates Inc since 2010.

  1. Mutual Fund Management Co
    – · 2 years
    Troy, MI · Adviser representative · Firm CRD 107538
  2. – present · 14 years
    Livonia, MI · Adviser representative · Firm CRD 110180
  3. William Mack & Associates IncAlso current
    – present · 16 years
    Troy, MI · Adviser representative · Firm CRD 107377

Credentials and registrations

Investment adviser representative registrations

William Mack is registered as an investment adviser representative in 2 states. The first approvals date from February 2010; the most recent is Texas, in November 2023.

  • MichiganSince 4 February 2010
  • TexasSince 2 November 2023

Examinations

Series 725 April 1987
Name
General Securities Representative Examination
Series 226 February 1986
Name
Direct Participation Programs Representative Examination
Series 6331 January 1986
Name
Uniform Securities Agent State Law Examination
Series 626 December 1985
Name
Investment Company Products/Variable Contracts Representative Examination

Key facts

CRD
1434254
Role
Vice President
Office
33762 SCHOOLCRAFT, 2ND FLOOR, Livonia, MI 48150
Registration
Investment adviser registration
In the industry since
February 2010
Disciplinary history
Not yet shown here · SEC record

Common questions

Where does William Mack work?

William Mack has been Vice President of Executive Financial Services Inc since January 2008, and is a control person of the firm.

Source: Form ADV, Schedule A, filed 28 March 2026

Is William Mack a financial advisor?

Yes. William Mack has a current investment-adviser registration in Michigan and Texas, through Executive Financial Services since September 2012.

Source: IAPD individual record, checked 22 October 2026

How many years of experience does William Mack have?

William Mack has 16 years in the financial industry, since February 2010, across 3 adviser firms.

Source: IAPD individual record, checked 22 October 2026

What exams has William Mack passed?

William Mack has passed 4 licensing exams: the Series 6, Series 63, Series 22 and Series 7. The earliest, the Series 6, was passed in December 1985.

Source: IAPD individual record, checked 22 October 2026

Where is William Mack based?

William Mack’s registered office is in Livonia, MI.

Source: IAPD individual record, checked 22 October 2026

Is William Mack registered with FINRA?

No. William Mack has no current broker registration.

Source: IAPD individual record, checked 22 October 2026

How can I verify William Mack’s record?

Search CRD 1434254 on the SEC’s adviser search (adviserinfo.sec.gov), which publishes William Mack’s full registration record.

Source: IAPD individual record, checked 22 October 2026

Leadership at Executive Financial Services

Sources

  1. IAPD individual record, CRD 1434254, checked 22 October 2026. Registration status, employment history and examinations.
  2. Form ADV Part 1A, Schedules A and B of Executive Financial Services Inc, filed 28 March 2026. Title, control and ownership bands.