Iowa Gubernatorial Nominee Zach Lahn Faces Scrutiny Over Koch Family Ties and Kansas Residency
Zach Lahn, the Republican nominee for governor of Iowa, has built his campaign on a brand of prairie populism, presenting himself as a self-made farmer and businessman who is beholden to no one. To prove his financial independence, he lent his campaign $2.5 million during the primary, a move that helped him defeat the candidate preferred by former President Donald Trump. Now facing Democratic State Auditor Rob Sand in a high-stakes general election, Lahn’s narrative of the independent outsider is being tested by records that show his personal and professional life are deeply interwoven with the Koch family, one of the most powerful political dynasties in the United States.
The connection between Lahn and the Kochs involves years of employment within the family’s political network, a co-founded private school, and a marriage to a former family member that coincided with a significant surge in Lahn’s personal wealth. While Lahn has attempted to downplay these ties during public appearances, his residency in Iowa remains a central flashpoint in the race, with opponents pointing to his long-term voting record in Kansas and his ownership of a multi-million dollar estate outside of Wichita.
Lahn’s history with the Koch network began in 2014 when he was hired to lead the Montana chapter of Americans for Prosperity (AFP), the conservative advocacy group funded by the Kochs. Although Lahn recently told voters at a town hall in Humboldt, Iowa, that he worked for a Koch-funded group for only “one year, 10 years ago,” records show he held his leadership post for a year and then continued as a fundraiser for the organization into 2016. It was during a Koch-funded education conference that he met Annie Koch, who was then married to Chase Koch, the son of billionaire industrialist Charles Koch.
Following his time at AFP, Lahn moved to Kansas to co-found a private school called Wonder with Annie Koch. The school was bankrolled by Annie and Chase Koch. While Internal Revenue Service records from 2017 to 2024 indicate Lahn worked 50 hours per week for the school without pay, other financial documents tell a different story. Invoices and emails suggest Lahn was billing Annie and Chase Koch directly through a limited liability company for “consulting services.” In 2019, these monthly billings reached $20,883, amounting to an annual salary of approximately $250,000. Lahn’s campaign has maintained the school was a “passion project” and that the consulting payments predated the school’s operations.
The timeline of Lahn’s personal life also aligns with a sharp pivot in his financial status. In 2020, following divorces for both Lahn and Annie Koch, the pair applied for a marriage license just 11 days after Lahn’s divorce was finalized. Records from Lahn’s divorce filing offered little indication of his future wealth, listing just over $6,000 in a retirement account and a $163,750 mortgage on a $210,000 Iowa farmhouse. However, after marrying Annie—who reportedly received an eight-figure divorce settlement—Lahn’s investment activity expanded rapidly.
Public records show Lahn’s portfolio grew to include a $1.5 million mountain lot in Whitefish, Montana, and a $4.5 million home in the same resort area. In 2023, he purchased a historic movie theater in Belle Plaine, Iowa, and roughly 435 acres of land in Benton County. One of his more unusual investments includes a $1 million stake in FirmTech Inc., a company specializing in high-tech sexual health products for men. Lahn resigned from the company in 2023 as his political ambitions intensified.
Lahn has bristled at the suggestion that his wife’s wealth has fueled his career or his campaign, calling such inquiries a “silly question.” He maintains that he made a significant portion of his money through rental properties and startup ventures in Montana prior to his second marriage, though his campaign has declined to provide documentation for those claims.
Beyond his finances, Lahn’s residency has become a primary target for the Sand campaign. Sand has repeatedly labeled Lahn a “Kansas carpetbagger,” a charge fueled by Lahn’s recent voting history. Records show Lahn voted in Kansas in 2018, 2020, and 2022. He did not re-register to vote in Iowa until October 2024, the minimum threshold required to qualify for the 2026 gubernatorial cycle. Furthermore, while Lahn claims to live full-time at his family farmhouse in Belle Plaine, flight records show his private plane—decorated with the words “Iowa First”—frequently shuttling between Iowa and Kansas. The Lahns still own a 26-acre estate near Wichita appraised at $1.8 million.
During a recent debate, the tension over residency boiled over when Sand highlighted that Lahn’s children attend school in Kansas. Lahn accused Sand of exploiting his family, stating, “I am not going to be intimidated on this.” Sand countered that the issue was not the children’s location, but the fact that Lahn himself appeared to be a resident of another state.
Lahn has attempted to neutralize the wealth issue by attacking Sand’s own financial backing. Sand’s wife, Christine Lauridsen, heads the Lauridsen Group, and her family has contributed more than $5.8 million to Sand’s current campaign. Lahn has characterized Sand as a billionaire who is out of touch with regular citizens.
Despite his former ties to the Koch family, Lahn currently lacks the support of their formidable political machine. Americans for Prosperity Action has spent over $13.3 million on Iowa’s Senate race this year but has notably spent nothing to assist Lahn. Lahn attributes this to the fallout from the divorce, suggesting the Koch family is not interested in supporting his political rise. “They’re not supporting me in any way, shape or form,” Lahn told voters. “Not a dollar of inside help, a dollar of outside help. Nothing.”
