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The quality of advice is equally as important as the relationships formed

One Plan. One Team. Everything Working Together.

Ironhorse Investments & Estate Planning is a private wealth management firm where we help successful individuals and families simplify and coordinate every part of their financial life from investments, taxes, retirement income, insurance, and estate planning - all under one roof.

Our team brings together decades of experience and a deeply personal approach to financial advising. As a multi-generational, family-owned firm, we understand that your financial decisions aren’t just about numbers -they’re about the people you love, the career you’re building, and the legacy you want to leave.


You may already have pieces of a financial plan in place - a CPA for taxes, a 401(k) through work, an insurance policy you set up years ago and maybe a will you created at some point. But are they all working together toward your goals?

That’s where we come in.

We work with high-earning professionals, successful families, and retirees across Oklahoma, Minnesota, and 13 other states to build comprehensive financial plans that actually fit real life. Whether you're managing a demanding career, planning for college expenses, preparing to retire, or navigating a major life transition, our job is to bring clarity to every decision.

We also specialize in guiding individuals and families through the financial complexities that come with receiving large legal settlements—often due to life-altering events. These moments require more than investment advice—they require care, clarity, and a coordinated plan built for both today and the future.

We believe financial advice should be personalized, proactive, and rooted in relationship. At Ironhorse, we don’t just manage money—we guide people through life’s biggest financial moments with care and strategy.

With advanced credentials including CFP®, JD, CPA, CAP®, and Series 7/66 licensing, we combine trusted expertise with the kind of relationship-driven service that makes a lasting impact.

Our Credentials

The majority of our team is based out of Oklahoma but we have an office in Minnesota and run a Virtual Planning practice as well to serve clients all over the United States.

Here are the faces you will primarily see around the office:

Steven D. Kaestner, JD/CPA/CFP®/CAP® Photo Steven D. Kaestner, JD/CPA/CFP®/CAP® Hover Photo
Get to know us

Steven D. Kaestner, JD/CPA/CFP®/CAP®

Owner, Financial Consultant

4 things: cycling, golf, ou football, kids(5)/ grandkids(6)


Steve Kaestner, JD, CPA, CFP®, CAP® is the founder and Chief Executive Officer of Ironhorse Wealth Management. A CERTIFIED FINANCIAL PLANNER™ Professional, CPA, Attorney, and Chartered Advisor in Philanthropy®, Steve brings over 35 years of experience in retirement planning, estate planning, tax strategy, and investment management.

Steve works primarily with high-net-worth individuals who are preparing for or navigating retirement, as well as families who have received significant settlements and need help building a long-term, coordinated financial plan. His clients often come to him with multiple professionals, fragmented strategies, and big questions about how it all fits together. Steve’s strength lies in simplifying complexity—bringing tax, legal, and financial planning under one roof to create clarity and confidence around every decision.

He founded his law practice, Steven D. Kaestner, P.C., in 1989 after his career at Arthur Andersen LLP and serving as in-house counsel for a national real estate syndication firm. He earned his Series 7 and Series 66 licenses in 1997 and formed what is now Ironhorse Wealth Management, later obtaining his Series 24 license in 1999. Today, Ironhorse is a full-service firm known for integrating tax, estate, and investment strategies with intention and care.

Steve earned his Juris Doctor from the University of Oklahoma College of Law and holds a Bachelor of Science in Accounting from the University of South Dakota.

He has served in leadership roles including Director and Chairman of the Oklahoma Venture Forum, and as a Trustee for the Oklahoma Public Employees Retirement System (OPERS), where he contributed to the Audit Committee, Investment Committee, and chaired the Budget Committee. Steve remains an active member of the Oklahoma Bar Association, the American Institute of CPAs, the Oklahoma Society of CPAs, the Financial Services Institute, and the Oklahoma Association of Charitable Gift Planners.

email: steve@ironhorseinvest.com



CREDENTIALS:

  • Admitted to the BAR of Oklahoma
  • CERTIFIED FINANCIAL PLANNER™ Professional
  • Certified Public Accountant
  • Investment Advisor with Saxony Capital Management, LLC.
  • Registered Representative with Saxony Securities, Inc.
  • Series 7 Securities License
  • Life and Health Insurance License
  • Series 24 Securities License
  • Chartered Advisor in Philanthropy
Jamie Kaestner Photo Jamie Kaestner Hover Photo
Get to know us

Jamie Kaestner

Financial Advisor

4 things: CONCERTS, football (Skol vikings & boomer sooner!), vado and TRAVELING.


Jamie Kaestner began her career at Ironhorse Investments & Estate Planning in 2012, working alongside her dad, Steve, in the Oklahoma City office. In 2020, she expanded the firm’s reach by opening Ironhorse’s Minnesota office, where she now works primarily with high-achieving professionals, especially women in leadership, who are managing the demands of a growing career, a busy family life, and long-term financial goals.

Jamie helps her clients bring clarity and intention to their financial lives through personalized planning that aligns with their values. Her work includes developing comprehensive financial plans, analyzing risk tolerance, building investment strategies, and guiding decisions around tax planning, estate strategies, and saving for future goals. She holds her Series 7 and 66 licenses and is currently pursuing the CFP® designation.

A graduate of the University of Oklahoma with a background in communication and community relations, Jamie is passionate about making complex financial topics feel approachable and actionable.

Jamie and her husband, Tyler, along with their dogs Vado (the office mascot) and Maverick, live just west of the Twin Cities. Jamie travels regularly back to Oklahoma to meet with clients.  

Want a plan that helps your money match your ambition? Contact Jamie to schedule a conversation.

Email: jamie@ironhorseinvest.com


Credentials: 

  • Series 7 Securities License
  • Series 66 (combination of the 65 and 63) Securities License
  • Oklahoma's "Next Generation Under 30" Award (2016)


Lori Kaestner Photo Lori Kaestner Hover Photo
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Lori Kaestner

Senior Administrative & Legal Assistant

4 Things: family (5 kids & 6 grandkids), cooking, mowing & nature


Since 1989, Lori has worked as a Service Assistant to Steve and has held the position of Office Manager at Ironhorse Wealth Management since 2011

Prior to working at Ironhorse, Lori worked for accounting firms in Oklahoma City for eight years. Lori is responsible for working on investment paperwork and handles a wide range of tasks regarding new and existing investments. Lori has 24 years of experience working with Steve and is able to answer a variety of questions that you might have.

email: lori@ironhorseinvest.com


CREDENTIALS:

  • Steve's Wife. They have been married for 28 years and have worked together for 26 years - we think that is worth a certification!
Lauren Zirtzman Photo Lauren Zirtzman Hover Photo
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Lauren Zirtzman

Client Relations Coordinator, Life Insurance Producer

4 things: Family, football, travel & the lake


Lauren Zirtzman has held the position of Client Relations Coordinator at Ironhorse Wealth Management since April of 2015. Prior to working at Ironhorse, Lauren attended The University of Oklahoma. Lauren has her associate’s degree in Diversified Studies with a concentrated focus on Human Relations. Lauren is responsible for prepping client paperwork, tracking investments and rollovers, assisting with withdrawals and required minimum distributions, generating client meeting documents, organizing client events and entering and maintaining client data in comprehensive financial planning software.

In addition to her roll on the investment side, Lauren also passed her Life Insurance exam in August of 2016 and is a licensed insurance producer.

email: lauren@ironhorseinvest.com


CREDENTIALS:

  • Life Insurance License
Diana Rivera Photo Diana Rivera Hover Photo
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Diana Rivera

Client Advocate

4 things: travel, grandchildren, sports & concerts

 

Diana has worked for Ironhorse Investments & Estate Planning since February of 2022. She is the first voice you hear when you call our office and is an integral part of our day to day operations. She can help support general inquiries and setting apointments but behind the scenes, Diana helps assemble materials for client meetings in addition to maintaining our entire client database and other client service related items.

Prior to working on the Ironhorse team, Diana worked for an automobile dealership in sales, finance and as a manager. She comes to us with over 20 years experience. Diana is also fluent in Spanish and was born and raised in western Oklahoma!

Email: Diana@ironhorseinvest.com

Vado Photo Vado Hover Photo
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Vado

Office Mascot

4 Things: warm weather, hiking, swimming & cuddling


Vado was rescued outside of a truck stop in Vado, New Mexico at one and a half years of age. She was then brought to Minnesota where Jamie adopted her in January of 2022. She does go into the office every day and you can find her sleeping next to Jamie's desk. While Vado spends most of her time in the Minnesota office, she does make visits to Oklahoma!

Vado's Breed Mix:

  • 27% American Pit Bull Terrier
  • 17% Australian Cattle Dog
  • 8% Boxer
  • 8% Chow Chow
  • 7% Labrador Retriever