A 62-year-old Naperville man was sentenced to 38 years in prison for killing his wife in their home on the 1100 block of North Mill Street in March 2020.

Alan Wang must serve 100% of that sentence before becoming eligible for release, according to the DuPage County State's Attorney's Office. Judge O'Hallaren Walsh handed down the sentence in DuPage County court.

Wang was convicted October 8, 2025, on one count of first-degree murder following a four-day bench trial in the death of his wife, Hongyan Yang, who was 35 at the time of her death.

What happened

Naperville police and fire personnel responded to the couple's home at approximately 4:50 p.m. on Sunday, March 8, 2020, after a relative reported Yang was not breathing. She was taken to a hospital and pronounced dead at 5:54 p.m.

Investigators determined that the previous evening, Wang discovered text messages from another man on Yang's phone while the couple was in their bedroom. Prosecutors said Wang kicked Yang multiple times during the argument that followed.

Wang was initially charged with aggravated domestic battery. At a March 11, 2020, bond hearing, his bond was set at $850,000 with 10% to apply, meaning Wang needed to post $85,000 to be released. He was placed on electronic monitoring after posting bond.

An autopsy later determined Yang died from blunt-force trauma caused by an assault. On June 19, 2020, Wang was indicted on two counts of first-degree murder. His bond was increased to $1.25 million on July 8, 2020, and he remained in custody from that point forward.

State's Attorney's statement

DuPage County State's Attorney Robert Berlin called the case "yet another tragic reminder that domestic violence continues to plague society."

Berlin cited CDC data showing 1,373 women were killed by a spouse or intimate partner in 2023, the most recent year with available statistics. He noted that Yang was just 35 years old with a full life ahead of her.

"Judge O'Hallaren Walsh's thirty-eight-year sentence ensures that Mr. Wang will never again be in the position to harm another woman, and for that we are all thankful," Berlin said.

How to access court records

The DuPage County case number for People v. Wang was not included in the State's Attorney's release. Court records are searchable at the DuPage County Circuit Court Clerk's office or through a FOIA request at jis.dupageco.org.

Resources for domestic violence support

If you or someone you know is experiencing domestic violence, help is available. Contact the National Domestic Violence Hotline at 1-800-799-7233 or text START to 88788. DuPage County residents can also reach Mutual Ground, a local shelter and advocacy organization, at 630-897-0080 or mutualground.org.