Eavan Castaner v. The State of Wyoming

2026 WY 25
CourtWyoming Supreme Court
DecidedFebruary 24, 2026
DocketS-25-0107
StatusPublished

This text of 2026 WY 25 (Eavan Castaner v. The State of Wyoming) is published on Counsel Stack Legal Research, covering Wyoming Supreme Court primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Eavan Castaner v. The State of Wyoming, 2026 WY 25 (Wyo. 2026).

Opinion

IN THE SUPREME COURT, STATE OF WYOMING

2026 WY 25

OCTOBER TERM, A.D. 2025

February 24, 2026

EAVAN CASTANER,

Appellant (Defendant),

v. S-25-0107

THE STATE OF WYOMING,

Appellee (Plaintiff).

Appeal from the District Court of Natrona County The Honorable Daniel L. Forgey, Judge

Representing Appellant: Ryan A. Semerad, Fuller & Semerad, LLC, Casper, Wyoming.

Representing Appellee: Keith G. Kautz, Wyoming Attorney General; Jenny L. Craig, Deputy Attorney General; Kristen R. Jones, Senior Assistant Attorney General. Argument by Ms. Jones.

Amicus Curiae Juvenile Law Center: Ian Sandefer, Sandefer & Woolsey Trial Lawyers, LLC, Casper, Wyoming.

Before BOOMGAARDEN, C.J., and GRAY, FENN, and JAROSH, JJ., and WESTBY, D.J.

NOTICE: This opinion is subject to formal revision before publication in Pacific Reporter Third. Readers are requested to notify the Clerk of the Supreme Court, Supreme Court Building, Cheyenne, Wyoming 82002, of typographical or other formal errors so correction may be made before final publication in the permanent volume. WESTBY, District Judge.

[¶1] Eavan Castaner, who was fifteen years old at the time of his crime, plead guilty to an amended charge of second-degree murder. On appeal, Mr. Castaner argues that the district court’s sentence was illegal and violated Article 1, Section 14 of the Wyoming Constitution’s prohibition on cruel or unusual punishment. Finding that Mr. Castaner’s sentence was within the permissible statutory sentencing range and was not unusual 1 under the Wyoming Constitution, we affirm.

ISSUES

[¶2] Mr. Castaner presents two issues which question whether the district court imposed a legal sentence. The first issue challenges the lawfulness of his sentence under two separate Wyoming statutes while the remaining issue challenges his sentence under the Wyoming Constitution. We organize and rephrase those issues as:

I. Does Wyo. Stat. Ann. § 6-10-301(c) apply to a juvenile offender who received a term of years sentence? II. Was the district court’s sentence consistent with the punishment authorized by Wyoming statute for second-degree murder? III. Did the district court’s sentence violate the prohibition against cruel or unusual punishment under Article 1, Section 14 of the Wyoming Constitution?

FACTS

[¶3] On May 14, 2024, shortly after midnight, law enforcement officers were dispatched to Buckboard Park in Casper for a reported shooting. The caller identified the victim as 17-year-old L.B. and the shooter as 15-year-old Eavan Castaner. Upon arrival, law enforcement observed L.B. laying in the middle of the street with a gunshot wound to the head. Shortly after L.B. arrived at the hospital, it was determined she was deceased.

[¶4] During the investigation, officers learned Mr. Castaner had dated L.B. for approximately a year but they had broken up around April 18, 2024. Mr. Castaner began seeing another girl, J.B. Despite the breakup and his new relationship, Mr. Castaner continued to call L.B. and send harassing and threatening messages to her, even though she asked him to leave her alone. Examples of messages Mr. Castaner sent to L.B. included “Ur a b***h I hope you die slowly im go an celebrate when you die,” “Ur useless waste of air J.Bs] way better than you idk why I wasted a year of my life on ur hoe a**,” and “I

1 See infra ¶ 26. We do not analyze whether the sentence was cruel, as Mr. Castaner conceded that point in his supplemental brief. 1 hope you die in the most painful way possible.” Mr. Castaner sent these messages the day before the shooting. L.B. responded by telling Mr. Castaner to quit texting her.

[¶5] Some of L.B.’s family members saw the messages, including her cousin, R.R. R.R. reached out to L.B. about the messages. L.B. told R.R. that the messages were from Mr. Castaner and that he would not leave her alone. R.R. then messaged Mr. Castaner and told him to leave L.B. alone. This interaction escalated to Mr. Castaner wanting to fight R.R. in Buckboard Park, to which R.R. agreed. Mr. Castaner sent R.R. a video of a gun and a message threatening to shoot R.R. L.B. told R.R. that Mr. Castaner did not have a gun. However, Mr. Castaner did possess a gun. While his mother was out of town, Mr. Castaner took a handgun that his mother kept in a concealed carry case in her closet. Mr. Castaner took that handgun to the park to confront R.R.

[¶6] Before going to the park, Mr. Castaner’s friend, R.S., tried to convince Mr. Castaner not to go through with hurting anyone. R.S. went to the park to try to stop Mr. Castaner, including trying to physically restrain him and pinning him to the ground at one point. When his attempts failed, R.S. walked back to his car and Mr. Castaner remained at the park.

[¶7] According to witnesses, L.B. arrived at the park with R.R. and two other individuals. R.S. was in his car watching the interaction. R.R. and L.B. walked towards Mr. Castaner while the other two individuals stayed behind and went behind a tree. R.R. was carrying a baseball bat but did not threaten Mr. Castaner with the bat. While approaching, R.R. heard a slide on a pistol rack and Mr. Castaner saying “What!” R.R. then began to walk backwards away from Mr. Castaner. L.B. continued towards Mr. Castaner and raised her fist as if to hit him. Mr. Castaner then shot L.B. in the face and she fell immediately to the ground. Another individual who came to the park with L.B. had a firearm and fired a few rounds towards Mr. Castaner as he fled the park area.

[¶8] Mr. Castaner was apprehended at J.B.’s house shortly after the shooting. Mr. Castaner spoke with law enforcement and his story mostly matched the witnesses’ accounts. Mr. Castaner admitted that he shot one round from his pistol at L.B. when she was approximately three to four feet away from him after she approached him and appeared to be preparing to punch him. Mr. Castaner told law enforcement he had retrieved the pistol from his mother’s residence a few days prior, and he knew the magazine was loaded.

[¶9] On May 15, 2024, the State charged Mr. Castaner with first-degree murder, under Wyo. Stat. Ann. § 6-2-101(a) (2024), and misdemeanor stalking, under Wyo. Stat. Ann. § 6-2-506 (2024). Pursuant to a plea agreement, Mr. Castaner plead guilty to an amended charge of second-degree murder, under Wyo. Stat. Ann. § 6-2-104 (2024), and misdemeanor stalking. The plea agreement did not include a specific sentence recommendation for the second-degree murder charge. For the misdemeanor stalking, the sentence recommendation was for time served.

2 [¶10] Sentencing in this case became an issue because of constitutional considerations related to juvenile sentencing arising from Miller v. Alabama, 567 U.S. 460 (2012) and its progeny cases, our Bear Cloud line of cases, and Wyoming statutes that generally prohibit life sentences for juveniles without an individualized sentencing hearing and a finding of permanent incorrigibility. 2 The Bear Cloud line of cases 3 and Wyoming statutes effectively define a juvenile life sentence as one without parole eligibility and use twenty- five years as a benchmark for parole eligibility where the sentence is life. Prior to sentencing, the district court held a status conference to discuss some of these preliminary issues related to the sentencing hearing. Both the prosecutor and defense counsel agreed that the sentencing hearing appeared to be an individualized sentencing hearing. At the status conference, the State informed the district court that it believed the case was governed by Sam v. State, 2017 WY 98, 401 P.3d 834 (Wyo. 2017). The Court requested sentencing memoranda from both the State and defense counsel regarding the district court’s lawful sentencing options.

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2026 WY 25, Counsel Stack Legal Research, https://law.counselstack.com/opinion/eavan-castaner-v-the-state-of-wyoming-wyo-2026.