As of November 10, 2026, FS Bancorp, Inc. is a publicly traded company (Nasdaq: FSBW); its largest reported holder is De Lisle Partners LLP, with 5.1% on Schedule 13G of February 11, 2026. The largest insider holding is Donn C. Costa, the chief home lending officer and executive vice president, with 84,479 shares (1.1% of shares outstanding), per Form 4 of November 6, 2026 (Schedule 13G, February 11, 2026).
Is this your company?
About to sign with, pay or invest in FS Bancorp, Inc.? See the free Snapshot first.
Free to see. No signup.
Is FS Bancorp, Inc. a real, registered company?
- FS Bancorp Inc files with the SEC under CIK 1530249 (its SEC filings).
- Its shares are listed under the ticker FSBW on Nasdaq (SEC company record).
- Incorporated in Washington; business address in Mountlake Terrace, Washington, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under FS Bancorp Inc in our court records and SEC 8-K records (as of 2026-11-10).
- Leadership changes: the latest reported is Matthew D. Mullet (Form 8-K filed 2026-10-23). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names De Lisle Partners LLP (filed 2026-02-11).
Who are FS Bancorp, Inc.'s owners and officers?
FS Bancorp, Inc.: incorporated in Washington; business address in Mountlake Terrace, Washington; industry Savings Institutions, Not Federally Chartered (Form D, 2026-10-23).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G, 2026-02-11 | De Lisle Partners LLP | 5.1% |
| Schedule 13G, 2025-07-29 | The Vanguard Group | 5.19% |
Questions about who owns FS Bancorp, Inc.
Who owns FS Bancorp, Inc.?
On this page, one holder's latest ownership filing reports 5% or more of FS Bancorp, Inc.: De Lisle Partners LLP (5.1%, Schedule 13G, filed 2026-02-11).
When did De Lisle Partners LLP buy into FS Bancorp, Inc.?
The filings give report dates, not purchase dates. The earliest filing from De Lisle Partners LLP on this page is the Schedule 13G, filed 2026-02-11, reporting 5.1%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 3 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Want the whole picture on FS Bancorp, Inc.?
Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News
A Full Report on FS Bancorp, Inc.: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on FS Bancorp, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
8 cited sources found
Plus the sections for what you are deciding, which you pick after ordering.
A real finished report, first screen. Opens in a new tab.
| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-10-23 | Matthew D. Mullet | appointed |
Which insiders own FS Bancorp, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief home lending officer and executive vice president: 84,479 shares (1.1% of shares outstanding), 75,172 held directly and 9,307 indirectly (Form 4, 2026-11-06).
- , a director: 79,104.219 shares (1.0% of shares outstanding), 202.219 held directly and 78,902 indirectly (Form 4, 2026-10-30).
- , the chief lending officer and executive vice president: 1,003 shares (0.01% of shares outstanding), 17 held directly and 986 indirectly (Form 4, 2026-11-06).
Shares outstanding: 7,875,734 as of 2026-11-04, from the company's latest SEC cover page.
How much has FS Bancorp, Inc. raised?
No fundraising or offering filing from FS Bancorp, Inc. is on file with us.
Keep reading
More on FS Bancorp, Inc. and the records around it.
FS Bancorp, Inc. elsewhere on the record
- Leadership changes Jun 2026
Companies that share a holder
- De Lisle Partners LLP also filed stake reports on 3 other companies: BUILD-A-BEAR WORKSHOP INC (Feb 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
Related pages
Filings, cases and notices link to their records. A not-found line names the records searched; it is not proof of absence.
Not for employment, credit, insurance or tenancy decisions.
Cite this page
https://mentionfox.com/who-owns/fs-bancorp