DUBUQUE, Iowa — Gerald Mathew Nadermann, a 64-year-old white male, was arrested Monday afternoon on multiple felony and misdemeanor charges, according to Dubuque County records.

Nadermann was taken into custody at 1494 Elm St. in Dubuque at 3:52 p.m. on Oct. 13, 2026, by Officer S. Schroeder (badge D0049). He faces the following charges:

•  Theft in the 1st Degree – All Other Larceny (felony)

•  Criminal Mischief in the 1st Degree (felony)

•  Probation Violation (felony)

•  Parole Violation, New Evidence (misdemeanor)

Court records show that on Oct. 12, 2026, District Judge Thomas A. Bitter issued orders for a public/bench warrant in connection with probation revocation proceedings. Those orders were directed to the sheriff’s office.

Nadermann has a prior conviction history in Dubuque County. On March 3, 2025, he pleaded guilty to Theft in the 2nd Degree (Class D felony) stemming from an offense date of Oct. 12, 2024. Judge Bitter sentenced him to a five-year prison term that was suspended, along with 36 months of probation and a $1,025 fine that was also suspended.

In the same case, an original charge of Criminal Mischief in the 2nd Degree was amended to Criminal Mischief in the 3rd Degree (aggravated misdemeanor). Nadermann received a two-year suspended prison sentence, 24 months of probation, and an $855 suspended fine.

A separate probation violation charge under Iowa Code § 908.11 (offense date Oct. 1, 2025) was dismissed by Judge Monica L. Zrinyi Ackley on Dec. 10, 2025. An additional probation violation allegation (offense date Oct. 8, 2026) appears in the records with no bond indicated and no adjudication listed at the time of the latest arrest.

All information is drawn from publicly available Dubuque County court and arrest records. Charges are accusations; defendants are presumed innocent until proven guilty in a court of law.

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