Amy K. Rosenberg

Amy K. Rosenberg is a founding partner of Rosenberg & Zipser PLLC (formerly Peterson, Rosenberg PLLC).  She concentrates her work in estate planning, trust and estate administration, protective proceedings (guardianships and conservatorship) and trial and appellate litigation related to those fields.  She frequently makes presentations to community and professional groups on estate and estate tax planning, guardianships and conservatorships for children and incapacitated adults, financial exploitation of the elderly and estate planning for unmarried couples.

Ms. Rosenberg has been in private practice in Fort Collins since 1996.  After earning her law degree from the University of Texas at Austin, she worked in private practice in Austin.  She has also served as a staff attorney for William Beaumont Hospital in Royal Oak, Michigan and for the American Association of Homes and Services for the Aging a non-profit organization in Washington, D.C. that represents non-profit nursing homes and housing entities for the elderly.

She is a member of the Colorado and Larimer County Bar Associations and a member of the Colorado Bar Association’s Trust and Estates Section.  She currently serves as a court-appointed attorney for Respondents in guardianship and conservatorship proceedings in the District Courts of Larimer County.  She is a member of University of Colorado Health’s Planned Giving Advisory Council and the Planned Giving Committee of the Victoria Falls Wildlife Trust.  She is a founding member of WISH (Women Involved in Strategies for Health), a community health initiative of UC Health, and a past member of its Steering Committee.  She has served on the City of Fort Collins Commission on Disabilities, the Fort Collins Symphony Board of Directors and the Fort Collins Symphony Endowment Fund.

She is the author of “The Common Law Spouse in Colorado Estate Administration,” and “Being of Sound Mind:  Tests for Testamentary (and Other) Capacity,” both published in The Colorado Lawyer.

Jacqueline C. Zipser

Jacqueline C. Zipser is a partner of Rosenberg & Zipser PLLC. Ms. Zipser concentrates her practice in estate planning, fiduciary law and the administration of trusts and estates. She began her career as an associate attorney with the Chicago law firm of Schiff Hardin & Waite, now Schiff Hardin LLP. She then transitioned from drafting and planning to the implementation of estate plans as a Vice President and Trust Officer with Wells Fargo Bank in Salt Lake City and then in Fort Collins. In 2001, Ms. Zipser became the manager of the trust services team and trust counsel for First National Bank in Fort Collins. Her responsibilities expanded over time to include managing the delivery of trust services for all of First National’s Colorado Wealth Management locations and serving as the chairperson of the Trust Committee for First National Bank of Omaha, of which First National Bank is a division.

Ms. Zipser grew up in northern Colorado and graduated from Boulder High School. She attended Princeton University, graduating with departmental honors in Politics. After a year working as a paralegal in mass tort litigation, she attended Northwestern University School of Law and graduated cum laude, Order of the Coif (top ten percent of the class). She was a law clerk in United States District Court for the Northern District of Illinois. Ms. Zipser has co-authored articles appearing in Trusts & Estates magazine and presented at local and national continuing legal education seminars on a variety of estate planning topics. In working with clients, she strives to make even complex planning clear and comprehensible.

Ms. Zipser is a member of the Colorado and Larimer County Bar Associations and serves on the Board of the Food Bank for Larimer County. Her past community involvement includes service on the Poudre Valley Hospital Foundation Planned Giving Committee and on the Boards of Directors of Rivendell School and OpenStage Theatre.  She is a charter member of WomenGive.

Jacob C. Ruttinger

Jacob C. Ruttinger is an associate with Rosenberg & Zipser PLLC.  Mr. Ruttinger works in estate planning, trust and estate administration, protective proceedings (guardianships and conservatorships), fiduciary law, and probate litigation.

Mr. Ruttinger grew up in Washington, D.C.  He earned a Bachelor’s Degree in history from the College of Wooster and a law degree from the University Denver Sturm College of Law.  While in law school, Mr. Ruttinger volunteered for the Tribal Wills Project, preparing estate documents for Native Americans in Montana and New Mexico.  Mr. Ruttinger also interned at the law firm of Nathan B. Kennedy & Associates in Aurora, Colorado, where he worked in a variety of civil practice subjects and related litigation.  He enjoys long-distance trail running in the Fort Collins area.

Legal Assistants

Kristy L. Engelbrecht

Kristy L. Engelbrecht is a native of Colorado.  She graduated from Fort Collins High School and studied business administration at the University of Northern Colorado in Greeley. Ms. Engelbrecht has worked as a legal assistant in Fort Collins since 1985.  She works alongside attorneys and other staff in areas focused on estate planning and probate.  In her free time, Ms. Engelbrecht enjoys biking and hiking with her husband and children.

Jamie S. Walker

Jamie S. Walker joined the firm in 2018. In 2019, she earned an Associates of Applied Science Degree as an honors graduate of the Front Range Community College Paralegal Program.  She is a member of the National Honor Society. Before working as a paralegal, Ms. Walker managed and supervised operations for high-volume retailers in northern Colorado.  She has a passion for Children’s Miracle Network and St. Jude Children’s Research Hospital.  She devotes her volunteer time to working with adults who have special needs.

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