The South Dakota Supreme Court recently dismissed an appeal regarding The Six Cataracts Trust, affecting the rights of family trustees. The case, filed under docket number 31202, involved a dispute between Donald Netter and his daughter, Arianna Netter. This ruling highlights important issues related to trust management and the legal requirements for appeals.
The case began when Donald Netter filed a petition in 2025 to modify the definitions of trustees within The Six Cataracts Trust, established by his father, Edward Netter, in 1992. The trust was originally intended to benefit Donald and his children. Arianna, who had just reached adulthood, opposed her father's petition, claiming she was unaware of prior modifications made to the trust in 2013. This lack of notice led her to challenge the validity of those changes, citing potential fraud.
Arianna's counterpetition argued that she and her mother had not received proper notice during the 2013 proceedings, which she claimed invalidated the changes made at that time. Donald countered that Arianna's request to vacate the 2013 order was barred by legal principles, including res judicata, which prevents re-litigation of the same issue once it has been judged.
The dispute escalated to the South Dakota Circuit Court, where both Donald's petition and Arianna's counterpetition were denied. Following this, Arianna filed a notice of appeal. However, she failed to serve all necessary parties, which is a critical step in the appeal process. Donald subsequently moved to dismiss Arianna's appeal, citing her procedural error.
In a combined opinion authored by Justice Scott P. Myren, the South Dakota Supreme Court ruled on the jurisdictional issues surrounding the appeal. The court noted that “appellate jurisdiction can never be presumed but must affirmatively appear from the record.” This means that the court must have clear legal grounds to hear an appeal, which was not the case here.
The court explained that while Arianna had filed her notice of appeal on time, she did not fulfill the requirement to serve all necessary parties. This failure meant that the court could not establish jurisdiction over her appeal. Donald's notice of review, which he filed after moving to dismiss Arianna's appeal, was also deemed ineffective because it was based on a notice of appeal that had not been properly perfected.
Ultimately, the court stated, “We dismiss because our appellate jurisdiction has not been validly invoked.” The ruling emphasized the importance of following procedural rules in legal matters, particularly in appeals.
The impact of this ruling is significant for both Donald and Arianna, as it effectively ends Arianna's challenge to the trust modifications and reinforces the need for compliance with legal procedures in trust management. This case serves as a reminder to individuals involved in trusts and estate planning about the importance of clear communication and adherence to legal requirements.
Looking forward, the dismissal leaves open the possibility for future disputes over trust management and modifications. It underscores the necessity for all parties involved in a trust to be informed and included in legal proceedings. While this ruling cannot be appealed further due to the lack of jurisdiction, it may lead to other related cases as family members navigate the complexities of trust law.






