Kaiser Aluminum has retired 20.6% of its shares since 2007, from 20,580,815 to 16,349,092.
At $147.25 a share, a market value of $2.4B. P/E 10.6, trailing twelve months to June 2026.
| Fiscal year | Date | Shares outstanding | Filing | |
|---|---|---|---|---|
| 2006 | 2007-02-28 | 20,524,904 | 10-K | cover page |
| 2007 | 2008-01-31 | 20,580,815 | 10-K | cover page |
| 2008 | 2009-01-30 | 20,044,515 | 10-K | cover page |
| 2009 | 2009-12-31 | 20,276,571 | 10-K | |
| 2010 | 2011-02-16 | 19,214,451 | 10-K | |
| 2011 | 2012-02-23 | 19,253,185 | 10-K | |
| 2012 | 2013-02-13 | 19,313,235 | 10-K | |
| 2013 | 2014-02-11 | 18,014,394 | 10-K | |
| 2014 | 2015-02-16 | 17,464,752 | 10-K | |
| 2015 | 2016-02-12 | 17,995,363 | 10-K | |
| 2016 | 2017-02-15 | 17,482,863 | 10-K | |
| 2017 | 2018-02-15 | 16,757,781 | 10-K | |
| 2018 | 2019-02-15 | 16,093,993 | 10-K | |
| 2019 | 2020-02-14 | 15,854,182 | 10-K | |
| 2020 | 2021-02-22 | 15,812,169 | 10-K | |
| 2021 | 2022-02-22 | 15,865,118 | 10-K | |
| 2022 | 2023-02-20 | 15,940,756 | 10-K | |
| 2023 | 2024-02-19 | 16,015,791 | 10-K | |
| 2024 | 2025-02-17 | 16,100,473 | 10-K | |
| 2025 | 2026-02-16 | 16,210,443 | 10-K |
Source: all 10-K filings of Kaiser Aluminum on EDGAR. Download this series as CSV. Licence CC BY 4.0, credit Buyback Radar.
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Not on a net basis. Kaiser Aluminum has 0.9% more shares outstanding than twelve months ago. Whatever it bought back did not cover the new shares it issued. Over five years the share count is up 3.1%.
Net of every new share it issued, Kaiser Aluminum has 4.2 million fewer shares than at its 2007 peak. That is 20.6% of the company.
16,349,092 shares, as of July 20, 2026, from the cover page of its latest 10-Q. At the 2007 peak it had 20,580,815.
Each share is a bigger slice of the company. Someone who held Kaiser Aluminum stock in 2007 owns 1.3 times as much of the business today without buying another share. Whether that was a good use of cash depends on the price paid.
Kaiser Aluminum ranks No. 367 of 467 companies on Buyback Radar by share of the company retired since its peak. Close to it on the list: Morgan Stanley (20.6%), Huntington Ingalls Industries (20.6%), Progyny (20.5%), Baxter International (20.4%).
Every answer is computed from Kaiser Aluminum's own SEC filings and rebuilt every Monday. Latest count: 10-Q on EDGAR.
From the latest 13F filings. All superinvestors.
The numbers say what happened. The story says whether it can continue. We cover companies like Kaiser Aluminum in depth on Cannibal Stocks.
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