Treynor
In 1902, TS Bank (then known as Treynor Savings Bank) was opened in Treynor, Iowa in a little building across the street and to the west from the current TS Bank on 15 E. Main St., Treynor. A new building for Treynor Savings Bank was built on the southwest corner of Treynor's Four Corners intersection, and it was completed in 1921, but Treynor Savings Bank ceased to exist in 1923. That same year, Joseph Gronstall was then appointed by the State Superintendent of Iowa to run the bank which became Treynor State Bank, a chartered bank in 1923.
Harry Holst served as the bank’s first president from 1923-1952, a non-employment position, followed by Joseph Gronstal, a full-time employee since 1923 and served as president from 1952-1972, and then Robert Gronstal who served as president from 1972-1978.
In 1978, Mick Guttau was named CEO, President and Chairman of the Board. At that time, Mick, with the help of his family leveraged the family’s century farm and purchased controlling interest in the bank from the Gronstal family, and it remains a family-owned bank today.
In 1983, the bank moved to its current location at 15 E. Main Street.
In 2014, Josh Guttau was announced as CEO (and eventually Chairman of the Board in 2024 when Mick moved to Chairman Emeritus status upon his retirement). At that time, the was also an addition in Treynor, adding more space for shared services and meeting spaces.
In 2020, the bank name was officially changed to TS Bank.
Since then, TS Bank has continued to expand with additional locations in southwest and central Iowa. View all of the current TS Bank locations here.
Macedonia
TS Bank's first step into growth was in the year 2000, opening a new location in Macedonia, Iowa. Macedonia is a town 11 miles southeast of Treynor. The small town had a bank that changed hands multiple times before TS Bank came into town. TS Bank hired the former bank's employee, Vicki Putnam, to work at the new branch until she retired in 2020. The building was remodeled, bringing back some of the original look and feel, including removing a lowered ceiling and restoring arched windows. This location features a 24 HR ATM in the vestibule.
HyVee - Council Bluffs (now closed)
In November of 2005, TS Bank opened a branch inside of the Hy-Vee grocery store located at 10 Hy-Vee Drive, where interstate 80 meets Madison Avenue in Council Bluffs. This was TS Bank's first location in Council Bluffs and the Omaha MSA. This location was closed in 2024.
West Broadway - Council Bluffs
In March of 2013, TS Bank opened its first free-standing location in Council Bluffs located at 3201 W Broadway. This location features two drive-thru lanes and includes an exterior 24 HR ATM.
Atlantic
In December of 2015, TS Bank opened a new location in Atlantic, Iowa. TS Bank purchased a building that formerly housed an insurance agency located at 1005 E 7th Street and remodeled the space before opening. This location features an exterior Video ATM that serves as a 24 HR ATM after-hours in the drive-thru.
Corning
In August of 2016, TS Bank acquired Okey-Vernon First National Bank in Corning, Iowa from Blue Grass Bancorporation, Inc., with banking assets of $85 million. This location features a walk-up and drive-thru along with a Video ATM which converts to a 24 HR ATM after hours.
Downtown - Council Bluffs
In October of 2016, TS Bank opened its downtown location at 43 Scott Street in Council Bluffs, Iowa. The four-story building houses not only the first-floor bank branch, but the company's trust department, TS Prosperity Group, on the fourth floor. This location features a Video ATM that serves as a 24 HR ATM after hours in the drive-thru.
Ames
In 2020, TS Bank purchased a building in Ames at 402 Lincoln Way which opened as a loan production office in June that year. The location opened as a full-service branch on April 3, 2023 and was celebrated with a grand opening on September 1, 2023. The newly remodeled bank branch also offers a 24 HR ATM in the drive-thru.
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