Mark Eric Ponsati is a former U.S. Army Reserve Judge Advocate General attorney who was convicted of second-degree murder for beating his wife, Sherri Ponsati, to death at their Gilbert, Arizona home in September 2017 and then staging the scene to look like a bathroom fall. A Maricopa County jury found him guilty in March 2023, and he was sentenced two months later to the maximum term of 25 years in the Arizona Department of Corrections.1Maricopa County Attorney’s Office. Mark Eric Ponsati Sentenced to 25 Years
The Night Sherri Ponsati Died
On September 7, 2017, Ponsati called 911 from the couple’s home in the Val Vista Lakes community. He told Gilbert police officers that his 33-year-old wife had slipped in the bathroom and hit her head.2AZ Central. Gilbert Man Accused of Murdering His Wife, Staging Crime Sherri was taken to a hospital and pronounced dead. The couple had two young children and had lived in the home for about a year.
Why Police Did Not Believe the Fall Story
The Office of the Medical Examiner found injuries that could not have come from a single slip. The autopsy documented multiple blunt force injuries: rib fractures, skull fractures, spine and brain bruising consistent with violent shaking, and a large laceration on the back of Sherri’s head.1Maricopa County Attorney’s Office. Mark Eric Ponsati Sentenced to 25 Years
The scene itself raised questions. Officers noted an unusual blood pattern in the bathroom and a large amount of blue bath soap spread across the tile. A gallon-sized soap jug lay tipped over and nearly empty, and police said the container could not have released that much liquid without being deliberately inverted.3ABC15. Husband Arrested in Death of Gilbert Woman Investigators also determined that Ponsati had washed the clothing both he and Sherri had been wearing at the time.2AZ Central. Gilbert Man Accused of Murdering His Wife, Staging Crime
Ponsati told police the couple had no recent arguments and no history of marital problems. Family and friends told a different story, describing a volatile relationship marked by jealousy and control. According to police reports, the couple had gone through a long separation involving infidelity claims, and at least one relative told investigators that Ponsati had threatened to kill Sherri if she tried to end the marriage.2AZ Central. Gilbert Man Accused of Murdering His Wife, Staging Crime
Ponsati was arrested on September 14, 2017, one week after Sherri’s death, and charged with one count of second-degree murder. His bond was set at $1 million.4WRAL. Gilbert Man Arrested in Death of Wife
His Military and Legal Career
Ponsati had spent most of his adult life in uniform. He served in the U.S. Air Force as a ground radio technician from 2002 to 2006, including an overseas tour, then moved to the Air Force Reserves and later the Army. From 2010 to 2015 he served as a JAG Corps officer in the U.S. Army, earned multiple commendation medals, and deployed to Afghanistan.5Avvo. Mark-Eric Ponsati Attorney Profile His military legal work included prosecuting homicide, child abuse, and sexual assault cases. After leaving active duty, he worked as associate general counsel at MD Helicopters and in a contracts role at Sikorsky, a Lockheed Martin subsidiary, while continuing as an Army Reserve JAG officer.
The Trial
The trial opened on January 23, 2023, in Maricopa County Superior Court, more than five years after Sherri’s death. Deputy County Attorney Joshua Grimsman led the prosecution, arguing that Ponsati had beaten his wife and then staged the bathroom to look like an accident.6AZ Central. Gilbert Army Reserve Attorney Found Guilty for the Murder of Wife
The state built its case on the medical evidence, the scene, and the aftermath. The medical examiner’s findings showed injuries across Sherri’s face, back, ribs, and skull that were inconsistent with an accidental fall. Grimsman pointed to the nearly empty soap jug as proof the floor had been deliberately made slippery. Prosecutors also told the jury that Ponsati had hired a cleaning service to come to the house the morning after Sherri died, and that he had tried to move to Kentucky within days. Friends testified that the marriage was “falling apart.”6AZ Central. Gilbert Army Reserve Attorney Found Guilty for the Murder of Wife
Defense attorney Thomas Henager maintained that Sherri’s death was a tragic accident. He argued that her multiple injuries could be explained by falling several times in the bathroom, and that the planned move to Kentucky had been arranged before she died. Henager acknowledged problems in the marriage but said neither spouse intended to end it. “The evidence in this case is going to show how an innocent man can look guilty and be charged with crimes like this,” he told the jury in his opening statement.6AZ Central. Gilbert Army Reserve Attorney Found Guilty for the Murder of Wife
After four days of deliberation, the jury found Ponsati guilty of second-degree murder on March 17, 2023.
The Sentence
On May 19, 2023, Maricopa Superior Court Judge Michael Blair sentenced Ponsati, then 42, to 25 years in the Arizona Department of Corrections.1Maricopa County Attorney’s Office. Mark Eric Ponsati Sentenced to 25 Years Second-degree murder in Arizona carries a sentencing range of 10 to 25 years, so the term was the maximum available.
Sherri’s mother spoke at the hearing. “The pain is indescribable, especially when I heard about all the injuries she received,” she said, adding that she had been waiting five years and eight months for justice.7KTAR. Gilbert Man Sentenced to 25 Years for Second-Degree Murder
Maricopa County Attorney Rachel Mitchell said the maximum sentence provided “a sense of closure and justice for the family and friends who cared deeply for this victim.”1Maricopa County Attorney’s Office. Mark Eric Ponsati Sentenced to 25 Years No appeal had been publicly reported as of his sentencing.