Common Stock, Shares, Outstanding of KAISER ALUMINUM CORP from 30 Jun 2010 to 31 Dec 2025

Taxonomy & unit
us-gaap: shares
Description
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
Summary
KAISER ALUMINUM CORP quarterly Common Stock, Shares, Outstanding in shares history and change rate from 30 Jun 2010 to 31 Dec 2025.
  • KAISER ALUMINUM CORP Common Stock, Shares, Outstanding for the quarter ending 31 Dec 2025 was 16,210,443, a 0.71% increase year-over-year.
Source SEC data
View on sec.gov
Common Stock, Shares, Outstanding, Quarterly (shares)
Common Stock, Shares, Outstanding, YoY Quarterly Change (%)

KAISER ALUMINUM CORP Quarterly Common Stock, Shares, Outstanding (shares)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 16,210,443 +114,545 +0.71% 31 Dec 2025 10-K 19 Feb 2026 2025 FY
Q3 2025 16,206,255 +118,500 +0.74% 30 Sep 2025 10-Q 23 Oct 2025 2025 Q3
Q2 2025 16,177,739 +90,627 +0.56% 30 Jun 2025 10-Q 24 Jul 2025 2025 Q2
Q1 2025 16,154,376 +98,344 +0.61% 31 Mar 2025 10-Q 24 Apr 2025 2025 Q1
Q4 2024 16,095,898 +80,107 +0.5% 31 Dec 2024 10-K 19 Feb 2026 2025 FY
Q3 2024 16,087,755 +73,937 +0.46% 30 Sep 2024 10-Q 24 Oct 2024 2024 Q3
Q2 2024 16,087,112 +73,948 +0.46% 30 Jun 2024 10-Q 26 Jul 2024 2024 Q2
Q1 2024 16,056,032 +81,996 +0.51% 31 Mar 2024 10-Q 25 Apr 2024 2024 Q1
Q4 2023 16,015,791 +75,035 +0.47% 31 Dec 2023 10-K 20 Feb 2025 2024 FY
Q3 2023 16,013,818 +73,238 +0.46% 30 Sep 2023 10-Q 26 Oct 2023 2023 Q3
Q2 2023 16,013,164 +91,102 +0.57% 30 Jun 2023 10-Q 28 Jul 2023 2023 Q2
Q1 2023 15,974,036 +69,920 +0.44% 31 Mar 2023 10-Q 28 Apr 2023 2023 Q1
Q4 2022 15,940,756 +75,638 +0.48% 31 Dec 2022 10-K 23 Feb 2024 2023 FY
Q3 2022 15,940,580 +77,908 +0.49% 30 Sep 2022 10-Q 25 Oct 2022 2022 Q3
Q2 2022 15,922,062 +62,242 +0.39% 30 Jun 2022 10-Q 28 Jul 2022 2022 Q2
Q1 2022 15,904,116 +56,178 +0.35% 31 Mar 2022 10-Q 25 Apr 2022 2022 Q1
Q4 2021 15,865,118 +52,949 +0.34% 31 Dec 2021 10-K 24 Feb 2023 2022 FY
Q3 2021 15,862,672 +50,503 +0.32% 30 Sep 2021 10-Q 26 Oct 2021 2021 Q3
Q2 2021 15,859,820 +47,651 +0.3% 30 Jun 2021 10-Q 26 Jul 2021 2021 Q2
Q1 2021 15,847,938 +58,344 +0.37% 31 Mar 2021 10-Q 06 May 2021 2021 Q1
Q4 2020 15,812,169 -56,135 -0.35% 31 Dec 2020 10-K 01 Mar 2022 2021 FY
Q3 2020 15,812,169 -88,787 -0.56% 30 Sep 2020 10-Q 26 Oct 2020 2020 Q3
Q2 2020 15,812,169 -216,506 -1.4% 30 Jun 2020 10-Q 28 Jul 2020 2020 Q2
Q1 2020 15,789,594 -344,953 -2.1% 31 Mar 2020 10-Q 21 Apr 2020 2020 Q1
Q4 2019 15,868,304 -366,299 -2.3% 31 Dec 2019 10-K 26 Feb 2021 2020 FY
Q3 2019 15,900,956 -646,281 -3.9% 30 Sep 2019 10-Q 25 Oct 2019 2019 Q3
Q2 2019 16,028,675 -637,266 -3.8% 30 Jun 2019 10-Q 26 Jul 2019 2019 Q2
Q1 2019 16,134,547 -647,989 -3.9% 31 Mar 2019 10-Q 25 Apr 2019 2019 Q1
Q4 2018 16,234,603 -538,983 -3.2% 31 Dec 2018 10-K 25 Feb 2020 2019 FY
Q3 2018 16,547,237 -358,131 -2.1% 30 Sep 2018 10-Q 25 Oct 2018 2018 Q3
Q2 2018 16,665,941 -257,797 -1.5% 30 Jun 2018 10-Q 27 Jul 2018 2018 Q2
Q1 2018 16,782,536 -500,094 -2.9% 31 Mar 2018 10-Q 01 May 2018 2018 Q1
Q4 2017 16,773,586 -877,875 -5% 31 Dec 2017 10-K 22 Feb 2019 2018 FY
Q3 2017 16,905,368 -1,017,850 -5.7% 30 Sep 2017 10-Q 27 Oct 2017 2017 Q3
Q2 2017 16,923,738 -1,060,867 -5.9% 30 Jun 2017 10-Q 28 Jul 2017 2017 Q2
Q1 2017 17,282,630 -703,891 -3.9% 31 Mar 2017 10-Q 21 Apr 2017 2017 Q1
Q4 2016 17,651,461 -402,286 -2.2% 31 Dec 2016 10-K 23 Feb 2018 2017 FY
Q3 2016 17,923,218 +319,488 +1.8% 30 Sep 2016 10-Q 25 Oct 2016 2016 Q3
Q2 2016 17,984,605 +849,787 +5% 30 Jun 2016 10-Q 27 Jul 2016 2016 Q2
Q1 2016 17,986,521 +716,378 +4.1% 31 Mar 2016 10-Q 22 Apr 2016 2016 Q1
Q4 2015 18,053,747 +446,496 +2.5% 31 Dec 2015 10-K 22 Feb 2017 2016 FY
Q3 2015 17,603,730 -225,899 -1.3% 30 Sep 2015 10-Q 22 Oct 2015 2015 Q3
Q2 2015 17,134,818 -797,967 -4.4% 30 Jun 2015 10-Q 23 Jul 2015 2015 Q2
Q1 2015 17,270,143 -760,457 -4.2% 31 Mar 2015 10-Q 30 Apr 2015 2015 Q1
Q4 2014 17,607,251 -539,766 -3% 31 Dec 2014 10-K 22 Feb 2016 2015 FY
Q3 2014 17,829,629 -842,388 -4.5% 30 Sep 2014 10-Q 24 Oct 2014 2014 Q3
Q2 2014 17,932,785 -801,727 -4.3% 30 Jun 2014 10-Q 24 Jul 2014 2014 Q2
Q1 2014 18,030,600 -1,079,014 -5.6% 31 Mar 2014 10-Q 25 Apr 2014 2014 Q1
Q4 2013 18,147,017 -1,166,218 -6% 31 Dec 2013 10-K 20 Feb 2015 2014 FY
Q3 2013 18,672,017 -642,178 -3.3% 30 Sep 2013 10-Q 23 Oct 2013 2013 Q3
Q2 2013 18,734,512 -579,683 -3% 30 Jun 2013 10-Q 25 Jul 2013 2013 Q2
Q1 2013 19,109,614 -181,227 -0.94% 31 Mar 2013 10-Q 24 Apr 2013 2013 Q1
Q4 2012 19,313,235 +60,050 +0.31% 31 Dec 2012 10-K 18 Feb 2014 2013 FY
Q3 2012 19,314,195 +22,474 +0.12% 30 Sep 2012 10-Q 25 Oct 2012 2012 Q3
Q2 2012 19,314,195 +28,370 +0.15% 30 Jun 2012 10-Q 26 Jul 2012 2012 Q2
Q1 2012 19,290,841 +22,050 +0.11% 31 Mar 2012 8-K 23 Jul 2012 2012 Q1
Q4 2011 19,253,185 +38,734 +0.2% 31 Dec 2011 10-K 21 Feb 2013 2012 FY
Q3 2011 19,291,721 +74,820 +0.39% 30 Sep 2011 10-Q 27 Oct 2011 2011 Q3
Q2 2011 19,285,825 +69,412 +0.36% 30 Jun 2011 10-Q 02 Aug 2011 2011 Q2
Q1 2011 19,268,791 31 Mar 2011 10-Q 28 Apr 2011 2011 Q1
Q4 2010 19,214,451 31 Dec 2010 8-K 23 Jul 2012 2011 FY
Q3 2010 19,216,901 30 Sep 2010 10-Q 27 Oct 2010 2010 Q3
Q2 2010 19,216,413 30 Jun 2010 10-Q 03 Aug 2010 2010 Q2
* An asterisk sign (*) next to the value indicates that the value is likely invalid.