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Our Philosophy

Effective
Representation

Achieving Success through Diligence and Perseverance
Different perspectives lead to better results. We enjoy working with talented individuals from different disciplines in the pursuit of a successful outcome for a client. We have been fortunate to have had the opportunity to partner with attorneys, accountants, and other professionals nationally and internationally that have taught us how to look at the law and life in new and interesting ways. It is important to stay humble, listen more and talk less.
MEET THE TEAM

Get To Know
Our Legal Team

Corey, Shannon, and Meghann share a common thread - a deep commitment to the legal profession. They each bring a unique set of skills to the table, cultivated over years of practicing in various practice areas. From the complexities of trusts and estates litigation to navigating the intricacies of employment law, these professionals are well-versed in multiple areas of legal practice, ensuring that their clients receive the best possible representation.

Our firm is dedicated to providing exceptional service and innovative legal solutions to our clients. We understand the challenges that our clients face, and we are committed to finding customized solutions to meet their unique needs.
We pride ourselves on our expertise in various industries and our ability to think outside the box to solve complex problems. Our goal is to build lasting relationships with our clients by delivering exceptional value and transparent communication throughout every step of the process.

At our core, we believe in integrity, responsibility, and giving back to the communities we serve. We strive to make a positive impact on the world around us, and we're proud to be a part of building a better business or securing a legacy for our clients.
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Get To Know
Corey T. Denevan
"Dedicated to Achieving Justice for Our Clients."
Corey was born and raised in Sioux Falls, South Dakota. However, he began his professional career on the West Coast in Seattle, Washington. He was an assistant vice president and trust officer with one of the nation’s largest financial institutions. Corey transitioned to the practice of law at Hertog & Coster, PLLC where he focused on estate planning, probate administration and the representation of non-professional fiduciaries and professional fiduciaries, such as banks, trust companies and guardianship agencies. Corey joined Aiken, St. Louis & Siljeg, P.S. as a shareholder, where he continued to manage complex trust, estate and guardianship matters, but also expanded his practice into business planning and succession, real estate transactions, creditor rights and commercial litigation. Corey also served as a court-appointed trustee and personal representative in complex and contentious cases.
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Get To Know
Shannon R. Falon
"Navigating the Legal System with Confidence."
Shannon is a native South Dakotan who attended college at South Dakota State University and law school at the University of South Dakota. She graduated at the top of her class and was awarded the prestigious gavel award by vote of the law school faculty. She was also a member of the Sterling Honor Society. After graduating first in her law school class, Shannon had the distinct honor of clerking for the United States District Court for the District of South Dakota. She clerked for Chief Judge Lawrence Piersol for two years prior to joining the Johnson Janklow Abdallah, LLP, law firm. She became a partner in the firm in 2009. Shannon practices in all areas of civil litigation including civil rights, constitutional law, employment law – employee, insurance law, personal injury – plaintiff, professional malpractice law and sexual harassment.
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Get To Know
Meghann M. Joyce
"Achieving Success through Diligence and Perseverance."
Meghann grew up in Rock Rapids, Iowa, and attended the University of South Dakota for her undergraduate studies and law school, graduating from both programs with high honors. Following law school, and before entering private practice, Meghann worked as a law clerk for the Honorable Glen A. Severson of the Supreme Court of South Dakota. As a law clerk, she reviewed hundreds of briefs, heard dozens of oral arguments, and assisted the Court in preparing for oral arguments and researching and writing decision.

Meghann has worked in private practice in Sioux Falls for twelve years. In that time, she has handled a wide variety of commercial litigation matters, including trusts and estates litigation, labor and employment law disputes, construction and design litigation, insurance bad faith litigation, and professional liability. Her work touches many prominent industries in South Dakota, including banking, agriculture, manufacturing, construction, and transportation. Meghann has appeared in both federal and state courts in South Dakota and handled numerous appeals to both the South Dakota Supreme Court and Eighth Circuit Court of Appeals.
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2023 Martindale-Hubbell Award
Corey Denevan
Highest Possible Rating in Both Legal & Ethical Standards
The Martindale-Hubbell Peer Review Ratings have been an integral part of Martindale-Hubbel's services to the legal community since 1887. The Peer Review Rating process which evaluates lawyers in the United States and Canada is solely based on peer review.
The AV Preeminent Rating is the pinnacle of professional excellence earned through a strenuous Peer Review Rating process that is managed and monitored by the world's most trusted legal resource, Martindale-Hubbel.
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Best Lawyers Recognition Badge
Shannon R. Falon
Best Lawyers is the oldest and most respected peer-review publication company in the legal profession
Recognition by Best Lawyers is widely regarded by both clients and legal professionals as a significant honor, conferred on a lawyer by their peers. For more than four decades, our publications have earned the respect of the profession, the media and the public as the most reliable, unbiased source of legal referrals anywhere.
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Meghann M. Joyce
The AV Preeminent Rating is the pinnacle of professional excellence earned through a strenuous Peer Review Rating process that is managed and monitored by the world's most trusted legal resource, Martindale-Hubbel.
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