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Jon Ferguson

Investment adviser representative at Cornerstone Securities in Willits, CA

Investment adviser registrationUpdated

Jon Ferguson is an investment adviser representative at Cornerstone Securities LLC, an investment adviser managing $210M, and works from its Willits, CA office. Jon Ferguson has been registered through Cornerstone Securities since 4 March 2025, has 23 years in the industry across 5 firms and has passed the Series 63, Series 6 and Series 65.

23
Years in industry
1
Years at firm
5
Adviser firms
3
States registered

From the IAPD record, checked 22 October 2026SEC record

Career

Jon Ferguson has been an investment adviser representative at Cornerstone Securities since March 2025, and is not listed among the firm’s executive officers or direct owners.

Cornerstone Securities LLC is an Overland Park, KS firm with $210M under management, 900 clients and 10 advisers across 4 offices, as of its September 2026 filing.

Jon Ferguson’s longest registration was 11 years at Planmember Securities Corporation (2014–2025). Before joining Cornerstone Securities in 2025, Jon Ferguson was registered through Planmember Securities Corporation and Cambridge Investment Research Advisors, Inc.

  1. – present · 1 year
    Willits, CA · Adviser representative · Firm CRD 140379
  2. Planmember Securities Corporation
    – · 11 years
    Willits, CA · Adviser representative · Firm CRD 11869
  3. Cambridge Investment Research Advisors, Inc.
    – · 7 years
    Bakersfield, CA · Adviser representative · Firm CRD 134139
  4. Cambridge Retirement Advisors
    – · under a year
    Bakersfield, CA · Adviser representative · Firm CRD 129096
  5. Legend Advisory Corp
    – · 1 year
    Bakersfield, CA · Adviser representative · Firm CRD 104761

Credentials and registrations

Investment adviser representative registrations

Jon Ferguson is registered as an investment adviser representative in 3 states. Each was approved in March 2025.

  • CaliforniaSince 4 March 2025
  • OregonSince 7 March 2025
  • TexasSince 5 March 2025

Examinations

SIECredited
Name
Securities Industry Essentials Examination
Series 659 June 2006
Name
Uniform Investment Adviser Law Examination
Series 617 April 2003
Name
Investment Company Products/Variable Contracts Representative Examination
Series 6318 January 2003
Name
Uniform Securities Agent State Law Examination

Key facts

Full name
Jon Robert Ferguson
CRD
4619256
Firm
Cornerstone Securities · CRD 140379
Office
Willits, CA
Registration
Investment adviser registration
In the industry since
April 2003
Disciplinary history
Not yet shown here · SEC record

Common questions

Where does Jon Ferguson work?

Jon Ferguson is an investment adviser representative registered through Cornerstone Securities LLC since March 2025, and is not listed among the firm’s executive officers or direct owners.

Source: IAPD individual record, checked 22 October 2026

Is Jon Ferguson a financial advisor?

Yes. Jon Ferguson has a current investment-adviser registration in California, Oregon and Texas, through Cornerstone Securities since March 2025.

Source: IAPD individual record, checked 22 October 2026

How many years of experience does Jon Ferguson have?

Jon Ferguson has 23 years in the financial industry, since April 2003, across 5 adviser firms.

Source: IAPD individual record, checked 22 October 2026

What exams has Jon Ferguson passed?

Jon Ferguson has passed 3 licensing exams: the Series 63, Series 6 and Series 65. The earliest, the Series 63, was passed in January 2003. FINRA credited Jon Ferguson with the SIE, which began in October 2018.

Source: IAPD individual record, checked 22 October 2026

Where did Jon Ferguson work before Cornerstone Securities?

Before Cornerstone Securities, Jon Ferguson was registered through Planmember Securities Corporation, January 2014 to March 2025; Cambridge Investment Research Advisors, Inc., October 2006 to December 2013; Cambridge Retirement Advisors, June 2006 to December 2006; Legend Advisory Corp, June 2004 to March 2006.

Source: IAPD individual record, checked 22 October 2026

Where is Jon Ferguson based?

Jon Ferguson’s registered office is in Willits, CA.

Source: IAPD individual record, checked 22 October 2026

Is Jon Ferguson registered with FINRA?

No. Jon Ferguson has no current broker registration.

Source: IAPD individual record, checked 22 October 2026

How can I verify Jon Ferguson’s record?

Search CRD 4619256 on the SEC’s adviser search (adviserinfo.sec.gov), which publishes Jon Ferguson’s full registration record.

Source: IAPD individual record, checked 22 October 2026

Leadership at Cornerstone Securities

Sources

  1. IAPD individual record, CRD 4619256, checked 22 October 2026. Registration status, employment history and examinations.
  2. Form ADV Part 1A, Schedules A and B of Cornerstone Securities LLC, filed 21 September 2026. Executive officers and direct owners; this person is not among them.