Sentinel Advisory Group

Sentinel Advisory Group

Tailored Financial Planning in Middleton, WI

  • Who We Are
    • Meet Our Team
    • Our Credentials
  • What We Do
    • Our Process
    • Clients We Serve Best
    • Services
  • Insights
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  • Client Logins
    • Investor360 Login
    • Income Lab Login
    • Right Capital
  • Who We Are
    • Meet Our Team
    • Our Credentials
  • What We Do
    • Our Process
    • Clients We Serve Best
    • Services
  • Insights
  • Contact
  • Client Logins
    • Investor360 Login
    • Income Lab Login
    • Right Capital
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Meet Our Team

When you partner with Sentinel Advisory Group, you gain access to an entire team of highly specialized professionals. Our advisors each possess distinct and specific planning knowledge , and we collaborate with each other to provide a distinguished, detailed planning experience. We offer practical direction and continuous support, designed to empower and galvanize you, so you can make immediate and continuous progress toward your best life.

Brent L. Cashore, RICP<sup>®</sup>

Brent L. Cashore, RICP®

Co-Founder & Private Wealth Advisor

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Peter Robert Shulla, RICP<sup>®</sup>

Peter Robert Shulla, RICP®

Co-Founder & Wealth Management Advisor

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Nathan Ford Keeling, CFP<sup>®</sup>, ChFC<sup>®</sup>, RICP<sup>®</sup>

Nathan Ford Keeling, CFP®, ChFC®, RICP®

Co-Founder & Private Wealth Advisor

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Karly Costanzo, CFP<sup>®</sup>, RICP<sup>®</sup>, WMCP<sup>®</sup>

Karly Costanzo, CFP®, RICP®, WMCP®

Private Wealth Service Advisor

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Cary Grunder, CLU<sup>®</sup>, ChFC<sup>®</sup>, CASL<sup>®</sup>, RICP<sup>®</sup>, WMCP<sup>®</sup>

Cary Grunder, CLU®, ChFC®, CASL®, RICP®, WMCP®

Private Wealth Advisor

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Kelsee Guest, RICP<sup>®</sup>

Kelsee Guest, RICP®

Private Wealth Service Advisor

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Natalie Burgess, CLF<sup>®</sup>

Natalie Burgess, CLF®

Director of Operations

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Natalie Gardina

Natalie Gardina

Client Service Associate

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Adriana Arakane

Adriana Arakane

Workflow Manager

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Sentinel Advisory Group Logo

1600 Aspen Commons,
Suite 825
Middleton, WI 53562

Phone: 608-579-9350
Fax: 608-579-9351
team@sentineladvisory.com

© 2025 Sentinel Advisory Group

Form CRS

Securities and advisory services offered through Commonwealth Financial Network®, Member FINRA/SIPC, a Registered Investment Adviser.

The Financial Advisor(s) associated with this website may only discuss or transact business with residents of states in which they are properly registered. No offers may be made or accepted from any resident of any other state. Please check FINRA’s Broker Check for a list of current registrations. Information presented on this site is for informational purposes only and does not intend to make an offer or solicitation for the sale or purchase of any product or security.

Check the background of our firm on FINRA’s Brokercheck