STX Form DEFA14A: Additional definitive proxy soliciting materials

Seagate Technology Holdings plc Form DEFA14A: Additional definitive proxy soliciting materials

Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.

2026-09-08: Form DEFA14A; Description DEFA14A; Document stxdefa-14axproxynotice.htm.
2025-09-09: Form DEFA14A; Description DEFA14A; Document stxdefa14a-proxynotice.htm.
2024-09-03: Form DEFA14A; Description DEFA14A; Document defa14a-stx2024notice.htm.
2023-09-05: Form DEFA14A; Description DEFA14A; Document defa14a.htm.

Filed	Form	Description	Document
2026-09-08	DEFA14A	DEFA14A	stxdefa-14axproxynotice.htm
2025-09-09	DEFA14A	DEFA14A	stxdefa14a-proxynotice.htm
2024-09-03	DEFA14A	DEFA14A	defa14a-stx2024notice.htm
2023-09-05	DEFA14A	DEFA14A	defa14a.htm
2022-09-01	DEFA14A	DEFA14A	d321344ddefa14a.htm
2021-08-30	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d193166ddefa14a.htm
2021-04-09	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d120497ddefa14a.htm
2021-03-08	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d107787ddefa14a.htm
2020-08-31	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d847811ddefa14a.htm
2019-09-10	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d795483ddefa14a.htm
2019-03-07	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d638849ddefa14a.htm
2018-09-07	DEFA14A	DEFA14A	d618185ddefa14a.htm
2017-08-30	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d448959ddefa14a.htm
2016-09-09	DEFA14A	DEFA14A	a16-16748_3defa14a.htm
2015-09-04	DEFA14A	DEFA14A	a15-18624_3defa14a.htm
2014-09-03	DEFA14A	DEFA14A	a14-18330_6defa14a.htm
2013-10-08	DEFA14A	DEFA14A	a13-21923_3defa14a.htm
2013-09-11	DEFA14A	DEFA14A	a13-18603_3defa14a.htm
2012-09-11	DEFA14A	DEFA14A	a12-17558_3defa14a.htm
2010-02-01	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	a10-2781_3defa14a.htm
2009-09-18	DEFA14A	DEFA14A	a09-23615_3defa14a.htm
2009-09-18	DEFA14A	DEFA14A	a09-23457_3defa14a.htm
2009-08-26	DEFA14A	DEFA14A	a09-23615_2defa14a.htm
2009-08-24	DEFA14A	DEFA14A	a09-23615_1defa14a.htm
2008-10-21	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	ddefa14a.htm
2008-09-19	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	ddefa14a.htm

Stock Name	Country	Market Cap	PE Ratio
WESTERN DIGITAL CORP (WDC)	United States	$162.391B	20.64
Sandisk Corp (SNDK)	United States	$256.760B	22.26
Everpure, Inc. (P)	United States	$40.630B	101.32
NetApp, Inc. (NTAP)	United States	$38.744B	24.68
QUANTUM CORP /DE/ (QMCO)	United States	$1.161B	-1.81