Former Eugene teacher sentenced for sexually abusing teen

William Hamann, 38, was sentenced to 13 years in federal prison and 10 years’ supervised release.

Posted: Mar 1, 2021 1:22 PM
Updated: Mar 1, 2021 1:32 PM

EUGENE, Ore. -- A former Eugene elementary school teacher was sentenced to federal prison Monday for sexually abusing a teenage girl.

William Hamann, 38, was sentenced to 13 years in federal prison and 10 years’ supervised release. Hamann was also ordered to pay restitution to his victim.

Court documents said that on several occasions from 2018 to July 2019, Hamann paid a teenage girl for oral sex and recorded her performing the sex acts. The girl was 15 years old during the first encounter with Hamann.


Eugene Police Department detectives and FBI agents arrested Hamann on July 26, 2019, when he was to meet with the girl a fourth time. Agents searched his cell phone and found a recording of one of the sex acts. Hamann had used social media to arrange the meetings with the teenager.

A search of Hamann’s residence and digital devices revealed that he had previously approached several other girls online who said they were minors. Investigators uncovered evidence that Hamann had engaged in sexually explicit conversations with them even after they said they were underage.

On Aug. 21, 2019, a federal grand jury in Eugene returned a four-count indictment charging Hamann with sexual exploitation and trafficking of a child, possession of child pornography, and attempted sex trafficking of a child. On Jan. 19, 2021, he pleaded guilty to sex trafficking of a child.

Hamann was formerly a teacher at Spring Creek Elementary School in Eugene.


This case was investigated by the FBI and the Eugene Police Department. It was prosecuted by Jeff Sweet, assistant U.S. Attorney for the District of Oregon, and Katherine Green, Lane County deputy district attorney.

Anyone who has information about the physical or online exploitation of children are encouraged to call the FBI at (503) 224-4181 or submit a tip online.

Federal law defines child pornography as any visual depiction of sexually explicit conduct involving a minor. The U.S. Attorney’s Office said it is important to remember that child sexual abuse material depicts actual crimes being committed against children. Not only do these images and videos document victims’ exploitation and abuse, but when shared on the internet, child victims suffer re-victimization each time the image of their abuse is viewed. To learn more, please visit the National Center for Missing & Exploited Children’s website.

This case was brought as part of Project Safe Childhood, a nationwide initiative launched in May 2006 by the Department of Justice to combat the growing epidemic of child sexual exploitation and abuse. For more information about Project Safe Childhood, please visit

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