Seagate Technology Hldngs PL

STX13F as of Jun 30, 2026 · next update ~Nov 14

Who's buying STX

Top funds mostly added to Seagate Technology Hldngs PL in Q2 (Apr⁠–⁠Jun)

Buying:

Funds2InsidersCongress

Top funds
2 of 3 bought more, 1 sold some. Largest: Lone Pine Capital, $965.1M (6% of its portfolio).
Insiders
No buys, 83 sales in 12 months.
Congress
No buys, 3 sales in 12 months.

3 funds$1.2B held2.4% avg. weightQ2: 2 bought / 1 sold

13F reports are a snapshot as of Jun 30, 2026; funds may have traded since. Insiders often sell for personal reasons (taxes, diversification, planned sales).

Share price · market data, not from 13F reports

Q2 2026

Insider trades (Form 4)

Last 2 years · 123 filings

Date	Insider	Type	Shares	Price	Value
Oct 1, 2026	William D Mosley CEO	Sold	11,002	$935.60	$10.29M
Oct 1, 2026	William D Mosley CEO	Sold	18,998	$914.68	$17.38M
Sep 21, 2026	John Christopher Morris VP & CTO	Sold	9,354	$877.91	$8.21M
Sep 15, 2026	Gianluca Romano VP & CFO	Sold	49,984	$772.16	$38.60M
Sep 15, 2026	William D Mosley CEO	Sold	97,889	$772.14	$75.58M
Sep 15, 2026	Ban Seng Teh VP	Sold	52,730	$782.08	$41.24M
Sep 15, 2026	John Christopher Morris VP & CTO	Sold	15,466	$772.15	$11.94M
Sep 14, 2026	Ban Seng Teh VP	Sold	989	$779.00	$770K
Sep 14, 2026	John Christopher Morris VP & CTO	Sold	493	$781.23	$385K
Sep 11, 2026	Gianluca Romano VP & CFO	Sold	5,555	$841.95	$4.68M
Sep 11, 2026	Gianluca Romano VP & CFO	Sold	45,898	$830.01	$38.10M
Sep 14, 2026	William D Mosley CEO	Sold	1,870	$781.23	$1.46M
Sep 10, 2026	Ban Seng Teh VP	Sold	663	$860.09	$570K
Sep 10, 2026	John Christopher Morris VP & CTO	Sold	572	$862.13	$493K
Sep 10, 2026	Gianluca Romano VP & CFO	Sold	1,348	$862.13	$1.16M
Sep 10, 2026	William D Mosley CEO	Sold	2,849	$862.13	$2.46M
Sep 1, 2026	William D Mosley CEO	Sold	30,000	$816.28	$24.49M
Sep 1, 2026	Yolanda Lee Conyers Director	Sold	750	$815.11	$611K
Aug 24, 2026	James CI Lee VP & CLO	Sold	9,013	$794.84	$7.16M
Aug 21, 2026	Ban Seng Teh VP	Sold	9,862	$852.97	$8.41M
Aug 20, 2026	Ban Seng Teh VP	Sold	6,048	$842.97	$5.10M
Aug 21, 2026	John Christopher Morris VP & CTO	Sold	4,039	$847.57	$3.42M
Aug 21, 2026	James CI Lee VP & CLO	Sold	3,939	$849.36	$3.35M
Aug 21, 2026	Gianluca Romano VP & CFO	Sold	9,076	$849.36	$7.71M
Aug 21, 2026	William D Mosley CEO	Sold	18,139	$849.36	$15.41M
Aug 13, 2026	Ban Seng Teh VP	Sold	7,361	$920.80	$6.78M
Aug 7, 2026	Gianluca Romano VP & CFO	Sold	880	$845.12	$744K
Aug 7, 2026	Gianluca Romano VP & CFO	Sold	14,091	$811.25	$11.43M
Aug 7, 2026	Gianluca Romano VP & CFO	Sold	7,240	$781.64	$5.66M
Aug 3, 2026	John Christopher Morris VP & CTO	Sold	168	$817.76	$137K
Aug 3, 2026	William D Mosley CEO	Sold	17,080	$827.30	$14.13M
Aug 3, 2026	William D Mosley CEO	Sold	12,920	$803.47	$10.38M
Jul 30, 2026	James CI Lee VP & CLO	Sold	694	$877.45	$609K
Jul 23, 2026	James CI Lee VP & CLO	Sold	542	$905.01	$491K
Jul 1, 2026	William D Mosley CEO	Sold	9,343	$924.42	$8.64M
Jul 1, 2026	William D Mosley CEO	Sold	20,657	$910.48	$18.81M
Jun 12, 2026	John Christopher Morris VP & CTO	Sold	1,364	$880.19	$1.20M
Jun 12, 2026	Ban Seng Teh VP	Sold	989	$880.19	$871K
Jun 12, 2026	Gianluca Romano VP & CFO	Sold	903	$880.19	$795K
Jun 12, 2026	William D Mosley CEO	Sold	1,768	$880.19	$1.56M
Jun 10, 2026	Ban Seng Teh VP	Sold	663	$821.86	$545K
Jun 10, 2026	John Christopher Morris VP & CTO	Sold	574	$821.66	$471K
Jun 10, 2026	William D Mosley CEO	Sold	2,855	$821.74	$2.35M
Jun 10, 2026	Gianluca Romano VP & CFO	Sold	1,351	$821.76	$1.11M
Jun 4, 2026	Shankar Arumugavelu Director	Sold	1,000	$927.68	$928K
Jun 2, 2026	Prat Bhatt Director	Sold	1,000	$929.88	$930K
Jun 1, 2026	Yolanda Lee Conyers Director	Sold	750	$885.33	$664K
Jun 1, 2026	William D Mosley CEO	Sold	13,780	$924.99	$12.75M
Jun 1, 2026	William D Mosley CEO	Sold	16,220	$900.21	$14.60M
May 20, 2026	William D Mosley CEO	Sold	30,000	$751.29	$22.54M
May 13, 2026	Ban Seng Teh VP	Sold	15,560	$815.42	$12.69M
May 7, 2026	Gianluca Romano VP & CFO	Sold	1,902	$770.00	$1.46M
May 6, 2026	Gianluca Romano VP & CFO	Sold	22,488	$774.22	$17.41M
May 5, 2026	Stephanie Tilenius Director	Sold	1,580	$766.61	$1.21M
May 4, 2026	John Christopher Morris VP & CTO	Sold	5,626	$738.37	$4.15M
May 4, 2026	James CI Lee VP & CLO	Sold	697	$741.17	$517K
Apr 1, 2026	William D Mosley CEO	Sold	20,000	$420.73	$8.41M
Mar 19, 2026	William D Mosley CEO	Sold	24,584	$406.77	$10.00M
Mar 13, 2026	John Christopher Morris VP & CTO	Sold	112	$377.44	$42K
Mar 2, 2026	William D Mosley CEO	Sold	20,000	$384.76	$7.70M
Mar 2, 2026	Yolanda Lee Conyers Director	Sold	750	$393.59	$295K
Feb 24, 2026	John Christopher Morris VP & CTO	Sold	240	$410.00	$98K
Feb 23, 2026	Kian Fatt Chong VP	Sold	5,846	$416.48	$2.43M
Feb 2, 2026	William D Mosley CEO	Sold	20,000	$429.27	$8.59M
Jan 30, 2026	Jay L Geldmacher Director	Sold	925	$448.03	$414K
Jan 29, 2026	Ban Seng Teh VP	Sold	20,195	$442.29	$8.93M
Jan 26, 2026	James CI Lee VP & CLO	Sold	673	$348.85	$235K
Jan 12, 2026	Ban Seng Teh VP	Sold	1,412	$299.31	$423K
Jan 2, 2026	William D Mosley CEO	Sold	20,000	$285.56	$5.71M
Dec 15, 2025	John Christopher Morris VP & CTO	Sold	113	$291.89	$33K
Dec 11, 2025	Ban Seng Teh VP	Sold	2,010	$295.90	$595K
Dec 2, 2025	Yolanda Lee Conyers Director	Sold	750	$272.91	$205K
Dec 1, 2025	William D Mosley CEO	Sold	20,000	$271.03	$5.42M
Nov 13, 2025	Gianluca Romano VP & CFO	Sold	8,002	$266.69	$2.13M
Nov 12, 2025	Gianluca Romano VP & CFO	Sold	54,021	$285.16	$15.40M
Nov 11, 2025	James CI Lee VP & CLO	Sold	697	$288.98	$201K
Nov 11, 2025	Ban Seng Teh VP	Sold	1,412	$288.98	$408K
Nov 10, 2025	Shankar Arumugavelu Director	Sold	5,000	$294.57	$1.47M
Nov 5, 2025	Ban Seng Teh VP	Sold	6,000	$270.00	$1.62M
Nov 3, 2025	Stephanie Tilenius Director	Sold	2,046	$266.41	$545K
Nov 3, 2025	William D Mosley CEO	Sold	20,000	$262.82	$5.26M
Oct 30, 2025	Kian Fatt Chong VP	Sold	7,078	$272.14	$1.93M
Oct 31, 2025	Jay L Geldmacher Director	Sold	1,250	$269.10	$336K
Oct 13, 2025	Ban Seng Teh VP	Sold	1,410	$225.56	$318K
Oct 1, 2025	William D Mosley CEO	Sold	20,000	$249.90	$5.00M
Sep 16, 2025	John Christopher Morris VP & CTO	Sold	377	$211.26	$80K
Sep 12, 2025	John Christopher Morris VP & CTO	Sold	15,347	$195.80	$3.00M
Sep 11, 2025	Ban Seng Teh VP	Sold	3,732	$193.30	$721K
Sep 10, 2025	Ban Seng Teh VP	Sold	6,781	$191.53	$1.30M
Sep 2, 2025	Yolanda Lee Conyers Director	Sold	750	$168.80	$127K
Sep 2, 2025	William D Mosley CEO	Sold	20,000	$168.97	$3.38M
Aug 11, 2025	Ban Seng Teh VP	Sold	1,724	$151.61	$261K
Aug 6, 2025	Jay L Geldmacher Director	Sold	2,500	$150.50	$376K
Aug 1, 2025	Ban Seng Teh VP	Sold	5,905	$155.00	$915K
Jul 31, 2025	James CI Lee	Sold	4,625	$154.41	$714K
Aug 1, 2025	William D Mosley CEO	Sold	20,000	$153.75	$3.07M
Jul 11, 2025	Ban Seng Teh VP	Sold	1,725	$144.00	$248K
Jun 11, 2025	Ban Seng Teh VP	Sold	1,723	$129.05	$222K
Jul 1, 2025	William D Mosley CEO	Sold	20,000	$144.66	$2.89M
Jun 16, 2025	Ban Seng Teh VP	Sold	599	$130.00	$78K
Jun 9, 2025	William D Mosley CEO	Sold	54,347	$130.19	$7.08M
Jun 9, 2025	Ban Seng Teh VP	Sold	3,594	$130.00	$467K
Jun 5, 2025	Stephanie Tilenius Director	Sold	2,693	$128.04	$345K
Jun 2, 2025	Michael R Cannon Director	Sold	24,190	$119.00	$2.88M
Jun 3, 2025	Ban Seng Teh VP	Sold	74,727	$124.24	$9.28M
Jun 2, 2025	Yolanda Lee Conyers Director	Sold	750	$117.01	$88K
Jun 2, 2025	William D Mosley CEO	Sold	70,000	$119.87	$8.39M
May 22, 2025	William D Mosley CEO	Sold	70,000	$109.47	$7.66M
May 29, 2025	Gianluca Romano VP & CFO	Sold	51,834	$117.45	$6.09M
May 27, 2025	Ban Seng Teh VP	Sold	4,201	$115.00	$483K
May 22, 2025	Judy Bruner Director	Sold	10,446	$108.71	$1.14M
May 22, 2025	Kian Fatt Chong VP	Sold	6,410	$111.26	$713K
Apr 1, 2025	William D Mosley CEO	Sold	20,000	$84.56	$1.69M
Mar 3, 2025	William D Mosley CEO	Sold	20,000	$101.57	$2.03M
Mar 3, 2025	Yolanda Lee Conyers Director	Sold	750	$102.95	$77K
Feb 3, 2025	William D Mosley CEO	Sold	20,000	$94.13	$1.88M
Jan 2, 2025	William D Mosley CEO	Sold	20,000	$86.65	$1.73M
Dec 12, 2024	John Christopher Morris VP & CTO	Sold	141	$98.46	$14K
Dec 10, 2024	John Christopher Morris VP & CTO	Sold	75	$98.85	$7K
Dec 2, 2024	William D Mosley CEO	Sold	20,000	$102.83	$2.06M
Dec 2, 2024	Yolanda Lee Conyers Director	Sold	750	$101.82	$76K
Nov 22, 2024	Gianluca Romano VP & CFO	Sold	68,954	$101.43	$6.99M
Nov 8, 2024	Kian Fatt Chong VP	Sold	9,182	$105.50	$969K