Company · CIK 0000811596 · SIC 3350 — Rolling Drawing & Extruding of Nonferrous Metals · Nasdaq

KAISER ALUMINUM CORP · KALU

Insider activity reported against this company. All insider holders · On EDGAR ↗

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Open-market buys & salesbuys $5,565 · 1sales $20.8M · 72net −$20.8M

Reported at this company — common stock

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Jun 4, 2026 AForm 4 →	Jun 5, 6:19 pm EDT	michael c arnoldDirector	786	—	—	11,445	—
Jun 4, 2026 AForm 4 →	Jun 5, 6:11 pm EDT	Kimberly Thompson GlasDirector	786	—	—	3,466	—
Jun 4, 2026 AForm 4 →	Jun 5, 5:53 pm EDT	Donald J StebbinsDirector	1,417	$178.10	$112,381	15,407	—
Jun 4, 2026 AForm 4 →	Jun 5, 5:50 pm EDT	Brett WilcoxDirector	1,114	$178.10	$58,417	3,019	—
Jun 4, 2026 AForm 4 →	Jun 5, 5:49 pm EDT	James Donald HoffmanDirector	1,375	$178.10	$104,901	3,760	—
Jun 4, 2026 AForm 4 →	Jun 5, 5:46 pm EDT	Richard P. GrimleyDirector	786	—	—	5,364	—
Jun 4, 2026 AForm 4 →	Jun 5, 5:17 pm EDT	Glenda J MinorDirector	1,121	$178.10	$59,664	4,516	—
Jun 4, 2026 AForm 4 →	Jun 5, 5:15 pm EDT	David A FosterDirector	786	—	—	24,332	—
Mar 5, 2019 AFForm 4 →	Mar 7, 5:47 pm EST	Neal E WestSVP & CFO	5,292	$108.79	$95,953	6,545	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:46 pm EST	Ray ParkinsonVP - Advanced Engineering	5,538	$108.79	$169,604	7,881	—	plan?
Mar 5, 2019 AForm 4 →	Mar 7, 5:46 pm EST	Courtney LynnVice President and Treasurer	1,069	—	—	1,069	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:45 pm EST	Mark KrouseVP - Human Resources	3,869	$108.79	$120,539	5,426	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:45 pm EST	Jennifer HueyVP & Chief Accounting Officer	972	$108.79	$18,603	1,050	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:44 pm EST	Jack A HockemaCEO, Director	47,312	$108.79	$1,691,902	45,832	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:43 pm EST	Keith HarveyPresident & COO	23,953	$108.79	$807,331	87,935	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:43 pm EST	Melinda C EllsworthVP IR & Corp. Communications	2,972	$108.79	$93,451	4,142	—	plan?
Mar 5, 2019 AFForm 4 →	Mar 7, 5:42 pm EST	John Malcolm DonnanEVP - Legal, Compliance & HR	11,348	$108.79	$343,994	24,102	—	plan?
Feb 28, 2019 DFForm 4 →	Mar 4, 7:17 pm EST	John BarnesonSr. VP - Corporate Development	3,721	$109.48	$91,744	5,510	—	plan?
Jan 17, 2019 SForm 4 →	Jan 18, 6:23 pm EST	Jack A HockemaCEO, Director	1,500	$100.27	$150,407	61,741	−2.37%	plan?
Jan 10, 2019 SForm 4 →	Jan 11, 7:49 pm EST	Jack A HockemaCEO, Director	4,500	$94.82	$426,673	63,241	−6.64%	plan?
Nov 21, 2018 SForm 4 →	Nov 26, 6:33 pm EST	Melinda C EllsworthVP IR & Corp. Communications	1,100	$95.36	$104,901	5,742	−16.1%	plan?
Nov 2, 2018 SForm 4 →	Nov 2, 7:47 pm EDT	Jack A HockemaCEO, Director	1,500	$100.41	$150,621	67,741	−2.17%	plan?
Oct 30, 2018 SForm 4 →	Oct 31, 5:44 pm EDT	Jack A HockemaCEO, Director	4,500	$93.35	$420,090	69,241	−6.10%	plan?
Aug 2, 2018 SForm 4 →	Aug 3, 4:49 pm EDT	Jack A HockemaCEO, Director	6,000	$111.91	$671,451	73,741	−7.52%	plan?
Aug 2, 2018 SForm 4 →	Aug 3, 4:49 pm EDT	Melinda C EllsworthVP IR & Corp. Communications	1,100	$112.23	$123,456	6,842	−13.9%	plan?
Jul 26, 2018 SForm 4 →	Jul 27, 4:02 pm EDT	Jack QuinnDirector	1,313	$110.33	$144,863	8,789	−13.0%	plan?
Jun 14, 2018 AForm 4/A →	Jun 22, 5:56 pm EDT	Thomas Melton Van LeeuwenDirector	1,148	$109.88	$16,152	12,850	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:50 pm EDT	Brett WilcoxDirector	1,285	$109.88	$31,206	15,276	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:49 pm EDT	Thomas Melton Van LeeuwenDirector	1,148	$10,988.00	$1,615,236	12,850	—	plan? amended
Jun 14, 2018 AForm 4 →	Jun 15, 4:49 pm EDT	Jack QuinnDirector	1,001	—	—	10,102	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:48 pm EDT	Alfred E Osborne Jr.Director	1,706	$109.88	$77,465	16,328	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:48 pm EDT	Lauralee MartinDirector	1,319	$109.88	$34,942	5,451	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:47 pm EDT	L Patrick HasseyDirector	1,251	$109.88	$27,470	7,578	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:47 pm EDT	David A FosterDirector	1,001	—	—	12,919	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:46 pm EDT	Emily M LiggettDirector	1,251	$109.88	$27,470	1,251	—	plan?
Jun 14, 2018 AForm 4 →	Jun 15, 4:46 pm EDT	Carolyn BartholomewDirector	1,001	—	—	14,345	—	plan?
Jun 13, 2018 SForm 4 →	Jun 15, 4:46 pm EDT	John BarnesonSr. VP - Corporate Development	7,000	$112.53	$787,708	48,222	−12.7%	plan?
May 25, 2018 SForm 4/A →	Jan 25, 2019, 6:35 pm EST	Jack A HockemaCEO, Director	9,000	$108.64	$977,788	70,741	−11.3%	plan?
May 25, 2018 SForm 4 →	May 29, 6:04 pm EDT	Jack A HockemaCEO, Director	9,000	$108.64	$977,788	79,741	−10.1%	plan? amended
May 24, 2018 SForm 4 →	May 29, 6:06 pm EDT	Del L MillerVice President and Treasurer	979	$108.23	$105,952	6,757	−12.7%	plan?
May 24, 2018 SForm 4 →	May 29, 6:05 pm EDT	Mark KrouseVP - Human Resources	1,500	$108.63	$162,941	3,565	−29.6%	plan?
May 22, 2018 SForm 4 →	May 23, 5:53 pm EDT	Neal E WestVP & Chief Accounting Officer	2,175	$110.00	$239,250	4,909	−30.7%	plan?
May 15, 2018 SForm 4/A →	Jun 22, 5:56 pm EDT	Neal E WestVP & Chief Accounting Officer	725	$103.40	$74,965	7,084	−9.28%	plan?
May 15, 2018 SForm 4 →	May 16, 4:30 pm EDT	Neal E WestVP & Chief Accounting Officer	725	$103.40	$74,965	7,074	−9.30%	plan? amended
May 14, 2018 SForm 4 →	May 16, 4:30 pm EDT	Ray ParkinsonVP - Advanced Engineering	3,262	$105.03	$342,595	5,837	−35.9%	plan?
Mar 15, 2018 SForm 4 →	Mar 16, 4:27 pm EDT	Alfred E Osborne Jr.Director	1,000	$104.40	$104,400	14,622	−6.40%	plan?
Mar 13, 2018 SForm 4 →	Mar 14, 5:33 pm EDT	Keith HarveyPresident & COO	6,608	$107.06	$707,430	78,824	−7.73%	plan?
Mar 12, 2018 SForm 4 →	Mar 14, 4:47 pm EDT	John Malcolm DonnanEVP - Legal, Compliance & HR	6,783	$107.10	$726,481	19,078	−26.2%	plan?
Mar 7, 2018 SForm 4 →	Mar 7, 6:38 pm EST	Jack A HockemaCEO, Director	9,000	$104.01	$936,129	52,613	−14.6%	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:40 pm EST	Neal E WestVP & Chief Accounting Officer	4,404	$101.66	$125,245	5,235	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:39 pm EST	Daniel J RinkenbergerEVP & CFO	19,206	$101.66	$589,120	85,907	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:39 pm EST	Ray ParkinsonVP - Advanced Engineering	7,829	$101.66	$220,399	9,455	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:38 pm EST	Del L MillerVice President and Treasurer	2,675	$101.66	$75,533	7,736	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:38 pm EST	Mark KrouseVP - Human Resources	5,473	$101.66	$155,946	8,838	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:38 pm EST	Jack A HockemaCEO, Director	71,963	$101.66	$2,419,305	56,752	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:37 pm EST	Keith HarveyPresident & COO	21,986	$101.66	$698,608	85,432	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:37 pm EST	Melinda C EllsworthVP IR & Corp. Communications	3,934	$101.66	$111,318	4,831	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:37 pm EST	John Malcolm DonnanEVP - Legal, Compliance & HR	16,507	$101.66	$493,559	25,861	—	plan?
Mar 5, 2018 AFForm 4 →	Mar 7, 6:36 pm EST	John BarnesonSr. VP - Corporate Development	12,216	$101.66	$269,907	16,986	—	plan?
Dec 18, 2017 SForm 5 →	Feb 14, 2018, 5:58 pm EST	Jack A HockemaCEO, Director	9,000	$101.46	$913,108	61,613	−12.7%	plan?
Oct 31, 2017 SForm 4 →	Nov 1, 9:13 pm EDT	Melinda C EllsworthVP IR & Corp. Communications	1,000	$99.48	$99,483	5,999	−14.3%	plan?
Sep 28, 2017 SForm 4 →	Sep 29, 7:31 pm EDT	Jack A HockemaCEO, Director	9,000	$102.67	$924,064	70,913	−11.3%	plan?
Sep 5, 2017 SForm 4 →	Sep 5, 8:37 pm EDT	Carolyn BartholomewDirector	1,000	$99.00	$99,000	13,344	−6.97%	plan?
Aug 17, 2017 SForm 4 →	Aug 21, 4:09 pm EDT	Alfred E Osborne Jr.Director	2,000	$94.56	$189,114	15,622	−11.3%	plan?
Aug 11, 2017 SForm 4 →	Aug 14, 4:45 pm EDT	John Malcolm DonnanEVP - Legal, Compliance & HR	5,115	$95.39	$487,934	19,064	−21.2%	plan?
Aug 8, 2017 SForm 4 →	Aug 9, 5:08 pm EDT	Del L MillerVice President and Treasurer	817	$97.07	$79,308	6,547	−11.1%	plan?
Aug 2, 2017 SForm 4 →	Aug 4, 7:18 pm EDT	Mark KrouseVP - Human Resources	1,500	$96.50	$144,751	6,433	−18.9%	plan?
Jul 27, 2017 GForm 5 →	Feb 14, 2018, 5:58 pm EST	Jack A HockemaCEO, Director	300	—	—	61,613	—	plan?
Jul 26, 2017 GForm 4 →	Jul 28, 4:50 pm EDT	Ray ParkinsonVP - Advanced Engineering	700	—	—	9,099	—	plan?
Jul 24, 2017 SForm 4 →	Jul 25, 8:23 pm EDT	Ray ParkinsonVP - Advanced Engineering	1,800	$97.45	$175,405	9,799	−15.5%	plan?
Jul 24, 2017 SForm 4 →	Jul 25, 8:22 pm EDT	Del L MillerVice President and Treasurer	1,282	$96.81	$124,110	7,364	−14.8%	plan?
Jul 15, 2017 AForm 4 →	Aug 1, 8:43 pm EDT	Keith HarveyPresident & COO	30,000	—	—	77,190	—	plan? late
Jul 10, 2017 SForm 4 →	Jul 12, 7:42 pm EDT	Jack A HockemaCEO, Director	9,000	$91.18	$820,649	79,913	−10.1%	plan?
Jul 10, 2017 SForm 4 →	Jul 12, 7:42 pm EDT	Carolyn BartholomewDirector	1,000	$92.00	$92,000	14,344	−6.52%	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:50 pm EDT	Jack QuinnDirector	1,313	—	—	9,101	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:41 pm EDT	Brett WilcoxDirector	1,686	$83.77	$31,246	13,991	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:41 pm EDT	Thomas Melton Van LeeuwenDirector	1,313	—	—	11,702	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:41 pm EDT	Alfred E Osborne Jr.Director	2,238	$83.77	$77,487	17,622	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:40 pm EDT	Lauralee MartinDirector	1,641	$83.77	$27,477	4,132	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:40 pm EDT	Teresa A HoppDirector	1,313	—	—	15,771	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:39 pm EDT	L Patrick HasseyDirector	1,969	$83.77	$54,953	6,327	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:39 pm EDT	David A FosterDirector	1,313	—	—	11,918	—	plan?
Jun 14, 2017 AForm 4 →	Jun 16, 4:39 pm EDT	Carolyn BartholomewDirector	1,313	—	—	15,344	—	plan?
May 15, 2017 PForm 5 →	Feb 14, 2018, 5:56 pm EST	John BarnesonSr. VP - Corporate Development	63	$88.41	$5,565	55,222	+0.11%	plan?
May 11, 2017 SForm 4 →	May 15, 6:13 pm EDT	Ray ParkinsonVP - Advanced Engineering	2,000	$80.75	$161,494	11,599	−14.7%	plan?
Apr 27, 2017 SForm 4 →	May 1, 4:30 pm EDT	Keith HarveyPresident & COO	4,877	$84.59	$412,545	47,190	−9.37%	plan?
Apr 24, 2017 SForm 4 →	Apr 26, 7:28 pm EDT	Neal E WestVP & Chief Accounting Officer	2,500	$84.54	$211,340	5,591	−30.9%	plan?
Mar 29, 2017 SForm 4 →	Mar 31, 4:54 pm EDT	Ray ParkinsonVP - Advanced Engineering	1,200	$78.16	$93,794	7,882	−13.2%	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:46 pm EST	Neal E WestVP & Chief Accounting Officer	3,994	$79.69	$92,520	5,098	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:46 pm EST	Daniel J RinkenbergerEVP & CFO	16,880	$79.69	$377,970	78,291	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:46 pm EST	Ray ParkinsonVP - Advanced Engineering	7,153	$79.69	$162,169	11,679	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:45 pm EST	Mark KrouseVP - Human Resources	4,447	$79.69	$70,924	7,933	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:45 pm EST	Jack A HockemaCEO, Director	61,459	$79.69	$1,610,136	54,418	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:45 pm EST	Keith HarveyPresident & COO	15,310	$79.69	$317,883	52,067	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:44 pm EST	Melinda C EllsworthVP IR & Corp. Communications	3,623	$79.69	$82,639	4,663	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:44 pm EST	John Malcolm DonnanEVP - Legal, Compliance & HR	14,676	$79.69	$329,359	24,179	—	plan?
Mar 5, 2017 AFForm 4 →	Mar 7, 6:44 pm EST	John BarnesonSr. VP - Corporate Development	10,713	$79.69	$164,082	15,628	—	plan?
Dec 30, 2016 FForm 4/A →	May 18, 2018, 6:37 pm EDT	Mark KrouseVP - Human Resources	557	$77.69	$43,273	3,742	—	plan?
Dec 30, 2016 FForm 4 →	Jan 4, 2017, 9:04 pm EST	Mark KrouseVP - Human Resources	557	$77.69	$43,273	5,266	—	plan? amended
Dec 5, 2016 SForm 4 →	Dec 6, 7:20 pm EST	John BarnesonSr. VP - Corporate Development	2,334	$84.57	$197,384	9,033	−20.5%	plan?

Reported at this company — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Δ stake
Dec 5, 2016 MForm 4 →	Dec 6, 7:20 pm EST	John BarnesonSr. VP - Corporate Development	2,334	—	—	—
May 5, 2016 MForm 4 →	May 6, 5:51 pm EDT	Daniel J RinkenbergerEVP & CFO	803	—	—	—
May 4, 2016 MForm 4 →	May 5, 6:07 pm EDT	Jack A HockemaCEO, Director	8,037	—	—	—
May 4, 2016 MForm 4 →	May 5, 6:05 pm EDT	John Malcolm DonnanEVP - Legal, Compliance & HR	2,083	—	—	—
May 4, 2016 MForm 4 →	May 5, 5:47 pm EDT	Keith HarveyPresident & COO	1,202	—	—	—