United States v. Anten

Court of Appeals for the Ninth Circuit·Decided July 27, 2026·No. 24-7261·Published

Opinion

FOR PUBLICATION

UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

UNITED STATES OF AMERICA, No. 24-7261 D.C. No. Plaintiff - Appellee, 2:24-cr-00002- WLH-1 v.

MARK WILLIAM ANTEN, OPINION Defendant - Appellant.

Appeal from the United States District Court for the Central District of California Wesley L. Hsu, District Judge, Presiding

Submitted April 15, 2026* Pasadena, California

Before: Consuelo M. Callahan, Patrick J. Bumatay, and Eric C. Tung, Circuit Judges.

Filed July 27, 2026

Opinion by Judge Callahan

* The panel unanimously concludes this case is suitable for decision without oral argument. See Fed. R. App. P. 34(a)(2). 2 USA V. ANTEN

SUMMARY **

Criminal Law

The panel affirmed Mark William Anten’s jury conviction for transmitting threats to injure another in interstate commerce, in violation of 18 U.S.C. § 875(c). The panel held that the true-threat statute, 18 U.S.C. § 875(c), requires an objective threat element as well as a subjective mental state element. Whether a statement is a “threat” must be judged through the eyes of a reasonable person. The panel concluded that the jury instructions in this case covered the objective element, although they could have been more clearly formulated. The panel further held that the district court did not invade the province of the jury in its response to a jury note asking which exhibits were referred to in the indictment.

COUNSEL

Kedar S. Bhatia and Clifford D. Mpare Jr., Assistant United States Attorneys; Alexander B. Schwab, Assistant United States Attorney, Acting Chief, Criminal Division; Bilal A. Essayli, First Assistant United States Attorney; Todd Blanche, Deputy Attorney General; Office of the United

** This summary constitutes no part of the opinion of the court. It has been prepared by court staff for the convenience of the reader. USA V. ANTEN 3

States Attorney, United States Department of Justice, Los Angeles, California; for Plaintiff-Appellee. Alyssa D. Bell, Cohen Williams LLP, Los Angeles, California, for Defendant-Appellant.

OPINION

CALLAHAN, Circuit Judge:

In an escalating barrage of emails to the Federal Bureau of Investigation (FBI), Mark William Anten eventually declared himself the “UNABOMBER” and stated, “I WILL UNABOMB THE LOS ANGELES FBI HQ.” A jury convicted Anten of transmitting threats to injure another in interstate commerce, in violation of 18 U.S.C. § 875(c). Anten now appeals, arguing that the district court’s jury instructions omitted an objective element required by the statute. We decide that the statute requires an objective element, but the jury instructions covered it. Anten’s other challenge, that the district court invaded the province of the jury, lacks merit too. We have jurisdiction under 28 U.S.C. § 1291, and we affirm. I. In 2018, Anten worked as a Confidential Human Source alongside a team of FBI agents on a healthcare fraud investigation. 1 The team of agents, all from the Los Angeles

1 As this appeal follows a jury’s verdict, the facts set forth in this section are drawn from the trial record. 4 USA V. ANTEN

field office, included Agents Amir Sharif, Stephanie O’Neal, and Diamond Outlaw. Agent Sharif, Anten’s main handler, 2 soon learned that Anten had “quirks.” Anten often appeared “disheveled,” left his shoelaces untied, and acted “socially awkward.” Anten would send “rambling” emails to his handlers, at times making “outlandish” requests. And once, when passing through a security checkpoint, Anten struggled to remove his belt, forcing Agent Sharif “to actually cut the belt off for [Anten].” Despite these quirks, Anten proved “really effective” when playing the role of “Donovan,” Anten’s pseudonym during his undercover work. Anten showcased particular skill at eliciting information from colleagues who worked alongside him at the healthcare company being investigated. Anten’s handlers found him to be “a good performer, very intelligent, educated, very clever,” “friendly,” and “never adversarial.” Anten’s partnership with the Los Angeles agents, however, lasted only five months. On September 21, 2018, Anten, playing the role of Donovan, was walking alongside one of his healthcare colleagues, whom the FBI was confidentially investigating. While navigating a stairwell, Anten dropped his water bottle, which fell to the ground, exposing wires from an FBI recording device. Seeing the wires protruding from the broken bottle, the subject individual questioned: “[W]hat is that recording device? . . . Why are there wires sticking out of this water bottle?” Anten attempted to remedy the situation by improvising that the

2 The FBI uses the term “handler” to refer to a case agent working with a Confidential Human Source. USA V. ANTEN 5

device was something he used for “electrolytes,” but Anten’s handlers feared that his undercover identity had been compromised. Anten confirmed these fears when he admitted during an FBI debriefing that he had revealed information about his confidential work to others. The FBI ended its relationship with Anten in October 2018 and told him to cease all contact with Agents Sharif, O’Neal, and Outlaw. But Anten, who had been fired by the healthcare company following the water bottle incident, attempted to communicate with Agent Sharif through emails, calls, and text messages. These communications subsided in 2019. In July 2023, Anten had another run in with the FBI— this time, with a different field office, a different agent, and a different investigation. When investigating a ransomware attack on a hospital, Agent Elizabeth Pelker of the Las Vegas field office had “come across” Anten and believed he “was in possession of some information pertaining” to the ransomware attack. Agent Pelker began communicating with Anten about this information. This renewed attention from the FBI may have prompted Anten to resume contact with his former Los Angeles-based team because that summer, Anten resumed contact with Agent Sharif through a flurry of emails. By October, Anten’s messages to Agent Sharif intensified. In one such email, Anten wrote: “I know you’re aware that I went to your office looking for you last week. I was completely unarmed. You can confirm with your security detail that is there to protect you from psychopaths.” The FBI verified, after reviewing security footage, that Anten was not “bluffing” and had in fact visited the FBI’s Los Angeles field office. 6 USA V. ANTEN

Around this time, Agent Sharif alerted the FBI’s security team to Anten’s communications. In his fifteen-year career with the FBI, Agent Sharif had never previously referred a Confidential Human Source to the security team. Continuing his outpouring of emails, Anten began to compare himself to the Unabomber—a comparison that Agent Sharif found “very troubling.” On November 2, 2023, Anten titled an email, “FBI alert, name change,” and wrote: “As I am sure you are aware in your extensive background check of me, I was voted most likely to become the next Unabomber after graduate school. The person who ran the poll was so alarmed at printing the results that she put a disclaimer asking me not to unabomb her. Cute.” Anten included a reward poster for the Unabomber. Later that day, Anten listed his similarities to the Unabomber:

He taught at Berkeley. I went to Berkeley.

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