Diahann W. Lassus

Diahann W. Lassus

| MBA, CFP®, CPA/PFS

Lassus Wherley

908-464-0102

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​Fee-Only wealth manager located in Bonita Springs, FL and New Providence, NJ

Specialties

  • Financial Planning
  • Retirement Planning
  • Investment Management
  • Wealth Management
  • Tax Planning
  • Tax Preparation
  • Estate Planning
  • Education Planning
  • Family Office Services
  • Executive Compensation
  • Trust Services
  • Business Planning

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1 Academy Street
New Providence, NJ 07974

3333 Renaissance Blvd.
Suite 207
Bonita Springs, FL 34134

Fee-Only & Fiduciary


The National Association of Personal Financial Advisors (NAPFA) is the country's leading association of fee-only and fiduciary financial planners.

Diahann W. Lassus is a Fee-Only wealth manager with office locations in New Providence, NJ and Bonita Springs, FL. Lassus Wherley is a wealth management firm specializing in financial planning, investment management, tax preparation, trust services and family office support. Diahann is a NAPFA-Registered Financial Advisor and a CERTIFIED FINANCIAL PLANNER™ Professional.


In 1985, Diahann Lassus co-founded Lassus Wherley, an investment management firm with offices in New Providence, New Jersey and Bonita Springs, Florida.

At Lassus Wherley, Diahann's responsibilites include direction of the investment department and oversight of the marketing and compliance functions.

Diahann worked for several AT&T organizations between 1977 and 1984, at one point overseeing annual sales of $140 million and managing 60 employees. In 1984, she was AT&T’s Field Operations Manager for the Special Project Olympic Operations in Los Angeles, creating in eight months the largest temporary telecommunications network in existence.

See Diahann Lassus's Full Biography including Noteworthy Achievements and Professional Affiliations. 

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We are a Fee-Only wealth management firm with expertise in financial planning, investment management, tax preparation, trust services, and family office support. We assist individuals, couples, families, pension and profit sharing plans, trusts, estates, and charitable organizations in identifying their needs, desires and goals.

At Lassus Wherley, we take the time to learn what is important to you, and what are your needs and wants. We are a Fee-Only advisor meaning we don’t sell products or receive commissions or other third party compensation. Our clients know our advice and guidance will be objective and motivated only by what is in their best interests. We only provide financial advice after obtaining a complete understanding of your circumstances. We analyze your unique situation and strive to educate you so that you will understand your financial choices. Operating with these principles helps us to assist you in building a more secure future. In the process we give you the peace of mind that comes from knowing you are dealing with people who understand and care about you. You’ll feel right at home in our New Providence, NJ location or our office in Bonita Springs, FL or working with us over longer distances. We work with clients in many states. 

Our firm, led by Diahann W. Lassus and Clare E. Wherley, includes professionals who come to us from varied backgrounds and represent many age groups. This diversity allows us to draw on different resources, and it brings unique perspectives we know you will appreciate.  We utilize a client-tested approach, with each  professional contributing in his or her area of expertise. This means you will have access to our entire team’s capabilities instead of just one professional. Together everyone is inspired by a work ethic and environment that focuses on you. 

We know how important a secure financial future is to you, and we earn your trust by helping you make sound financial decisions. 

Lassus Wherley is a nationally certified Women’s Business Enterprise by the Women’s Business Enterprise National Council (WBENC) and a member of the National Association of Personal Financial Advisors (NAPFA), the nation’s leading organization dedicated to the advancement of Fee-Only comprehensive financial planning.

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