Insider Holders & Insider Ownership - Seagate Technology Holdings plc (STX)

List of insiders holdings for Seagate Technology Holdings plc:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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# Insider Holder Name Report
Date Time		 Shares Owned
Directly
Indirectly		 Total
Shares Owned		 Filing
1 NEW SAC
Former 10 % Shareholder		 2006-02-14 14:52:55 71,583,997
0		 71,583,997 Form 13G
2 SAMSUNG ELECTRONICS CO LTD
10% Owner		 2013-10-22 12:52:07 32,700,000
0		 32,700,000 Form 13D
3 HUTCHINS GLENN H
Director		 2006-08-17 17:02:13 0
23,061,080		 23,061,080 Form 4
4 TPG SAC ADVISORS III CORP
10% Owner		 2005-08-04 18:05:21 0
22,089,816		 22,089,816 Form 4
5 SILVER LAKE OFFSHORE AIV GP LTD
SILVER LAKE TECHNOLOGY INVESTORS CAYMAN LP
SILVER LAKE INVESTORS CAYMAN LP
SILVER LAKE PARTNERS CAYMAN LP
10% Owner		 2007-02-14 06:23:22 10,680,538
0		 10,680,538 Form 13G
6 RAPPAPORT ANDREW
10% Owner		 2006-08-16 17:37:21 340,748
8,403,237		 8,743,985 Form 5/A
7 Haggart Dylan G.
ValueAct Holdings L.P.
ValueAct Capital Master Fund L.P.
VA Partners I LLC
ValueAct Capital Management L.P.
ValueAct Capital Management LLC
ValueAct Holdings II L.P.
ValueAct Holdings GP LLC
See Remarks		 2023-09-08 16:42:28 7,687,070
0		 7,687,070 Form 13D
8 ValueAct Holdings L.P.
ValueAct Capital Master Fund L.P.
ValueAct Capital Master Fund B L.P.
VA Partners I LLC
ValueAct Capital Management L.P.
ValueAct Capital Management LLC
ValueAct Holdings II L.P.
ValueAct Holdings GP LLC
See Remarks		 2023-09-08 16:42:28 7,687,070
0		 7,687,070 Form 13D
9 WATKINS WILLIAM D
CEO - See Remarks		 2009-02-06 19:52:10 807,330
1,745,050		 2,552,380 Form 4
10 AUGUST CAPITAL MANAGEMENT III LLC
AUGUST CAPITAL III LP
AUGUST CAPITAL STRATEGIC PARTNERS III LP
MARQUARDT DAVID F
RAPPAPORT ANDREW
JOHNSTON JOHN R
AUGUST CAPITAL III FOUNDERS FUND LP
10% Owner		 2006-01-05 19:14:42 1,676,933
0		 1,676,933 Form 4
11 MARQUARDT DAVID F
Director		 2009-12-02 13:48:43 1,196,652
106,388		 1,303,040 Form 4
12 KRYDER MARK H
SVP, CTO, Research		 2007-05-03 16:41:01 1,076,124
1,825		 1,077,949 Form 4
13 WEYANDT JOHN P
SVP, Product & Process Dev.		 2003-11-06 12:42:50 982,392
0		 982,392 Form 4
14 HUDSON WILLIAM L
Executive VP & General Counsel		 2008-08-11 19:12:32 911,692
0		 911,692 Form 5
15 DEXHEIMER BRIAN S
President, Consumer Solutions		 2008-09-16 16:21:58 568,331
30,000		 598,331 Form 4
16 MOSLEY WILLIAM D
Chief Executive Officer		 2025-04-02 17:19:07 555,677
0		 555,677 Form 4
17 O MALLEY PATRICK J
EVP & Chief Financial Officer		 2015-09-23 21:10:38 136,793
403,699		 540,492 Form 4
18 PORTER TOWNSEND H
Executive VP and CTO		 2003-12-02 17:50:02 530,565
0		 530,565 Form 4
19 CHIRICO JAMES M
EVP Global Disc Storage Ops		 2007-07-26 16:43:51 482,571
0		 482,571 Form 4
20 Cunningham Terence Robert
SVP, CONSUMER & i365		 2009-03-10 17:05:50 375,000
0		 375,000 Form 4
21 WICKERSHAM DAVID A
President and COO		 2008-09-16 16:18:54 334,857
0		 334,857 Form 4
22 TENNENBAUM JEREMY
Executive VP, Bus & Corp Devl		 2004-02-09 18:23:50 232,620
25,000		 257,620 Form 4
23 LUCZO STEPHEN J
Director		 2022-03-08 18:46:55 0
225,941		 225,941 Form 4
24 WAITE DONALD L
Executive VP & CAO		 2004-03-08 16:42:24 41,054
144,721		 185,775 Form 4
25 POPE CHARLES C
EVP, PLANNING & DEVELOPMT		 2008-10-29 17:24:20 80,200
76,900		 157,100 Form 4
26 THOMPSON JOHN WENDELL
Director		 2011-08-15 17:51:30 11,250
143,160		 154,410 Form 5
27 WINGERT MICHAEL J
EVP, Maxtor Integration		 2007-09-20 18:36:36 124,072
0		 124,072 Form 4/A
28 Whitmore Robert W
EVP & Chief Technical Officer		 2013-05-31 16:15:31 123,364
0		 123,364 Form 4
29 Pimentel Albert A
President, Global Mkts and CSO		 2015-09-23 21:03:59 38,226
79,202		 117,428 Form 4
30 Nygaard Jeffrey D.
EVP, Operations and Technology		 2023-02-02 19:59:29 42,661
71,794		 114,455 Form 4
31 PETERSON GLEN A
Sr. VP, Worldwide Finance		 2008-09-16 16:20:02 99,510
0		 99,510 Form 4
32 ABBOTT TODD
EVP, Sales, Mktg and Service		 2008-05-20 14:17:25 88,000
0		 88,000 Form 4
33 GLEMBOCKI JERRY S
Sr. VP Heads and Media		 2008-09-16 16:21:39 82,385
0		 82,385 Form 4
34 Romano Gianluca
EVP & CFO		 2025-03-12 16:31:52 80,049
0		 80,049 Form 4
35 PARK CHONG SUP
Director		 2018-10-22 18:11:05 16,809
32,527		 49,336 Form 4
36 ZANDER EDWARD J
Director		 2023-10-24 18:42:31 0
45,813		 45,813 Form 4
37 CANNON MICHAEL R
Director		 2024-10-22 18:15:15 38,452
6,885		 45,337 Form 4
38 Naik Ravi
EVP, Lyve Storage Services		 2023-03-23 17:10:28 38,857
0		 38,857 Form 4
39 SCHUELKE KATHERINE
SVP, CLO & Corporate Secretary		 2023-12-12 16:52:24 34,553
0		 34,553 Form 4
40 CLEMMER RICHARD L
Director		 2024-10-22 18:16:01 30,351
3,867		 34,218 Form 4
41 DEHAAN DOUGLAS J
General Manager, Samsung HDD		 2015-09-23 21:05:48 32,517
0		 32,517 Form 4
42 Richarz David K
Executive Vice President,Sales		 2015-04-28 16:08:49 31,944
0		 31,944 Form 4
43 Teh Ban Seng
EVP & Chief Commercial Officer		 2025-03-25 16:41:59 30,714
0		 30,714 Form 4
44 KIERNAN DONALD E
Director		 2008-11-03 18:00:41 18,750
11,250		 30,000 Form 4
45 BRUNER JUDY
Director		 2024-10-22 18:15:49 6,964
22,714		 29,678 Form 4
46 BONDERMAN DAVID
Director		 2003-11-03 18:14:36 25,000
0		 25,000 Form 4
47 BRADLEY WILLIAM W
Director		 2009-10-30 14:25:29 22,500
2,500		 25,000 Form 4
48 COULTER JAMES G
Director		 2005-10-31 17:20:42 25,000
0		 25,000 Form 4
49 MARSHALL LYDIA MICHEAUX
Director		 2014-10-23 19:08:58 24,535
0		 24,535 Form 4
50 Onken Kristen M
Director		 2016-10-20 16:14:12 23,729
0		 23,729 Form 4
51 MORTON DAVID H JR
EVP & CFO		 2018-07-27 19:35:08 23,346
0		 23,346 Form 4
52 Lee James CI
Chief Legal Officer		 2024-07-24 17:33:55 21,780
0		 21,780 Form 4
53 Morris John Christopher
SVP & CTO		 2025-03-12 16:32:02 21,279
0		 21,279 Form 4
54 COLEMAN WILLIAM T III
Director		 2020-10-23 19:08:03 20,330
0		 20,330 Form 4
55 CHENG MEI WEI
Director		 2018-10-22 17:22:24 20,047
0		 20,047 Form 4
56 Lerner James J
President, Cloud Systems		 2015-03-13 17:30:55 17,858
0		 17,858 Form 4
57 Tilenius Stephanie
Director		 2024-10-22 18:15:27 17,630
0		 17,630 Form 4
58 MacPherson Regan J
SVP and General Counsel		 2016-11-18 17:53:25 16,702
0		 16,702 Form 4
59 BRACE PHILIP G
Former President, CSSG		 2018-01-16 20:19:05 16,069
0		 16,069 Form 4
60 Haggart Dylan G.
Director		 2024-10-22 18:16:13 15,162
0		 15,162 Form 4
61 Fochtman Jeffrey D.
SVP, Business & Marketing		 2022-09-14 17:42:56 14,736
0		 14,736 Form 4
62 BHATT PRAT
Director		 2024-10-22 18:15:38 14,516
0		 14,516 Form 4
63 Arumugavelu Shankar
Director		 2024-10-22 18:14:10 13,273
0		 13,273 Form 4
64 Chong Kian Fatt
SVP, Global Operations		 2025-03-12 16:32:12 13,192
0		 13,192 Form 4
65 MURPHY JAMES J
EVP, Sales & Marketing		 2019-12-23 17:44:24 10,569
0		 10,569 Form 4
66 Hottier-Fayon Geraldine
Interim Prin. Accounting Ofcr		 2018-09-25 19:00:27 8,217
0		 8,217 Form 4
67 BRUGGEWORTH ROBERT A
Director		 2024-10-22 18:14:22 6,591
0		 6,591 Form 4
68 Conyers Yolanda Lee
Director		 2025-03-04 16:45:55 5,805
0		 5,805 Form 4
69 DAVIDSON JAMES
Director		 2008-08-11 18:54:10 5,000
0		 5,000 Form 5
70 REYES GREGORIO
Director		 2015-10-23 17:18:44 0
4,485		 4,485 Form 4
71 Scolnick Kathryn R.
Interim CFO		 2018-09-25 19:08:15 4,256
0		 4,256 Form 4
72 Geldmacher Jay L
Director		 2024-10-24 17:00:45 2,852
0		 2,852 Form 4
73 Adams Mark
Director		 2024-10-22 18:13:50 2,693
0		 2,693 Form 4
74 JEONG SEH-WOONG
Director		 2014-10-23 19:22:19 2,518
0		 2,518 Form 4
75 Anderson David Z
VP, Finance, Treasurer & PAO		 2009-10-27 13:15:40 2,500
0		 2,500 Form 4
76 ROGGE KAREN M
VP Corp. Finance and Treasurer		 2006-11-16 16:39:05 1,890
0		 1,890 Form 5
77 Moyo Dambisa F
Director		 2017-10-25 19:47:40 0
0		 0 Form 4
78 MASSARONI KENNETH M
SVP, Interim CLO		 2017-10-05 16:24:42 0
0		 0 Form 4
79 BIONDI FRANK
Director		 2017-10-27 15:29:30 0
0		 0 Form 4
80 RE MARK
SVP & CTO		 2017-10-05 16:23:08 0
0		 0 Form 4