SuperworthKaiser Aluminum shares outstanding KALU
Diluted shares outstanding, averaged over each quarter, from 2009.
- Latest quarter, to Sep 30, 2026
- 16.9M
- On a year earlier
- +1.6%
- more shares
Kaiser Aluminum had 16.9M diluted shares outstanding on average in Q3 FY26, the quarter to Sep 30, 2026.
That is 1.6% more than a year earlier, so each share owns a little less of the company.
Shares outstanding over time
Fiscal year by fiscal year
| Fiscal year | Shares, fourth quarter | Change |
|---|---|---|
| FY2025 | 17M | +3% |
| FY2024 | 16.4M | +1% |
| FY2023 | 16.2M | +2% |
| FY2022 | 15.9M | +1% |
| FY2021 | 15.9M | −1% |
| FY2020 | 15.9M | +0% |
| FY2019 | 15.9M | −6% |
| FY2018 | 16.9M | +0% |
| FY2017 | 16.8M | −5% |
| FY2016 | 17.6M | +2% |
| FY2015 | 17.3M | −7% |
| FY2014 | 18.6M | −3% |
| FY2013 | 19.2M | −1% |
| FY2012 | 19.4M | +5% |
| FY2011 | 18.4M | −3% |
Each fiscal year is the twelve months to its fourth quarter, shown as the fourth quarter's average share count.
Quarter by quarter
| Quarter | Ended | Shares outstanding | On a year earlier |
|---|---|---|---|
| Q3 FY26 | 16.9M | +2% | |
| Q2 FY26 | 16.9M | +3% | |
| Q1 FY26 | 16.8M | +3% | |
| Q4 FY25 | 17M | +3% | |
| Q3 FY25 | 16.6M | +2% | |
| Q2 FY25 | 16.5M | +0% | |
| Q1 FY25 | 16.4M | +1% | |
| Q4 FY24 | 16.4M | +1% | |
| Q3 FY24 | 16.3M | +1% | |
| Q2 FY24 | 16.4M | +2% | |
| Q1 FY24 | 16.2M | +1% | |
| Q4 FY23 | 16.2M | +2% |
What the shares outstanding tells you
Diluted shares outstanding, averaged over the period. Fewer shares means each one owns more of the company.
A falling count usually means buybacks. A rising one means stock pay, acquisitions paid in shares or new shares sold.
More on Kaiser Aluminum
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.