Peter D. Siena, JD


Peter D. Siena received his bachelor’s degree from the University of Illinois and his Juris Doctorate from DePaul University College of Law.

He began his legal career, while completing his law degree, as a Mediator for the Center for Conflict Resolution in Chicago, IL.

Prior to joining the Grundy County State’s Attorney’s Office Mr. Siena served the LaSalle County State’s Office for over ten years, where he prosecuted a wide variety of cases including numerous drug and domestic violence felonies.

Since joining the Grundy County State’s Attorney’s Office in June 2016, Mr. Siena has been part of the Felony Division managing a variety of offenses. Assistant State’s Attorney Siena is a member of both the LaSalle County Bar Association and the Grundy County Bar Association.

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