FS Bancorp FSBW Insider Ownership

Updated Oct 10, 2026

Over the trailing 12 months, FSBW insiders sold $407,633 worth of shares (9.93K shares) in open-market trades, with no open-market purchases.

• A count shows 3 insiders selling FSBW stock on the open market over the past 12 months and none buying.
• Marina Cofer-Wildsmith (Director) sold the most FS Bancorp stock on the open market over the past 12 months, $254,221 (6.36K shares), most recently on November 21, 2025.
• The latest open-market trade in FSBW stock by an insider was a sale of 975 shares for $42,169 by Terri L. Degner (Director) on August 28, 2026.
• Away from the open market, FSBW insiders received 30.2K shares in stock awards, acquired 11.65K shares through option exercises and conversions and gave up 23.54K shares to cover taxes or exercise prices over the last 12 months.
• Per Business Quant data, FS Bancorp insiders hold 624.73K shares in total based on their latest Form 4 filings, up 2.16% from 611.5K shares at the end of Q3 2025.
• By type of ownership, FSBW insiders hold 70.16% of their shares directly (438.34K shares) and 29.84% indirectly (186.39K shares).
• The insider holdings in FS Bancorp belong to 17 insiders who have reported on Form 4 within the past two years.
• FSBW's largest insider holders by reported holdings are Matthew D. Mullet (President & CEO of the Bank, 150.99K shares), Joseph C. Adams (Director, 114.09K shares) and Michael J. Mansfield (Director, 85.5K shares).
• Matthew D. Mullet alone accounts for 24.17% of the shares held by FS Bancorp insiders.
• Institutions held 65.88% of FS Bancorp's outstanding shares in their Q2 2026 13F filings, insiders about 8.42% based on their latest Form 4 filings, and other investors, including the public, the remaining 25.70%.
• In the past year, 17 insiders of FS Bancorp submitted 79 Form 4 filings reporting trades, awards or other transactions.
• Insider figures for FSBW include Form 4 filings through August 31, 2026.