Service Insurance Group/SIG Henderson

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Our Staff

Known for our competent, friendly, and knowledgeable staff, Service Insurance Group/SIG Henderson can serve all your Insurance and Investment needs. Get to know us better by reading about our staff!

Garry Antunes, Sr., Agency Principal

Professional development:

Garry began his career in insurance with Texas Farm Bureau in 1980, where he eventually became an Agency Manager of two East Texas agencies. He has over 35 years of experience in the industry, including sales, management and agency ownership. Garry is very involved in personal lines and commercial lines as well as providing life, health, and annuity products to SIG Clients.


David Gray, Agency Principal

Professional development:

David, a Texas A&M graduate in 1981, also began his career as an agent with Texas Farm Bureau. After excelling as an agent, he and Garry decided it was time to go out on their own in 1997. David primarily works in the life and annuity market providing an array of products to his clientele as an independent agent/producer.

Consulting focuses:

  • Estate Planning Maximization
  • Life Insurance
  • Safe Investments

Garry Antunes, Jr., Agency Principal

Professional development:

Garry, a 2003 graduate of The University of Texas, has been with SIG since 2006. He began his career as an agent with New York Life for several years in Dallas prior to returning to Henderson. Garry Jr. specializes in Operations of the office as well life, annuity and other financial services, including all variable products.

Consulting focuses:

  • Office operations
  • Life Insurance
  • Investments

Stacey Barton, Office Manager/Commercial CSR

Professional development:

Stacey has been with Service Insurance Group for over 15 years. She is the office manager, as well as a commercial CSR. Stacey specializes in new business and maintaining current clients' needs in our commercial department.

Consulting focuses:

  • Office operations
  • Commercial Insurance

Sassy Goodwin, Personal Lines Manager & CSR

Sassy Goodwin, Personal Lines Manager & CSR, joined SIG in 2007. She oversees the Personal Lines Department and handles new business, as well as servicing existing clients.


Krissy Whitehead, Commercial Lines CSR

Krissy Whitehead, Commercial Lines CSR, joined SIG in 2013 with over 12 years of experience in the insurance industry. Krissy writes new commercial business, as well as services her existing commercial clients.


Tara Gibson, Commercial Lines

Tara, our newest team member, joined SIG in 2015. She graduated from Sam Houston State University in 2014 with a B.S. in Communication Studies with a minor in Public Relations and currently works with our commercial clients.


Jeff Thompson, Producer/Agent

Jeff Thompson, Producer/Agent, has been with SIG for over 10 years. Prior to joining the group, he was a successful business owner. Jeff specializes in bringing in new business in both Personal Lines and Commercial Lines, as well as providing life and annuity products to his clientele. He is our Farm & Ranch Owner’s specialist and also specializes in the Oilfield Industry in Commercial Lines.


Justin Herrera, Producer/Agent

Justin Herrera, Producer/Agent, joined SIG in 2010. He specializes in new business in individual and group health and also maintains our book of business of individual and group health for the entire agency. He is ACA certified and SIG is an official ObamaCare Enrollment Center. Justin also writes Home, Auto, Life, Business Insurance, and Annuities. Before joining SIG, Justin had extensive background in medical and construction fields.