Form 4 for WDC Western Digital

Accepted 2026-06-11 17:50:16 ET · period of report 2026-06-09 · accession 0001266824-26-000127 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
MT	2026-06-11 17:50	2026-06-09	WDC	Cole Martin I	Dir	S - Sale	$536.01	-720	25.4K	-3%	-$385.9K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-06-09	S	D	48	$528.07	26,105	D	—	—	(F1) Due to SEC rules limiting the number of transactions that can be reported on a single Form 4, this Form 4 is a continuation of the Form 4 filed for the same date listed above. (F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F3) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $527.94 to a high of $528.23. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
2	Common	Common Stock	2026-06-09	S	D	64	$530.27	26,041	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F4) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $530.02 to a high of $530.72. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
3	Common	Common Stock	2026-06-09	S	D	48	$531.62	25,993	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F5) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $531.13 to a high of $531.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
4	Common	Common Stock	2026-06-09	S	D	96	$533.01	25,897	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F6) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $532.49 to a high of $533.47. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
5	Common	Common Stock	2026-06-09	S	D	48	$533.97	25,849	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F7) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $533.66 to a high of $534.45. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
6	Common	Common Stock	2026-06-09	S	D	16	$534.90	25,833	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.
7	Common	Common Stock	2026-06-09	S	D	112	$536.27	25,721	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F8) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $536.01 to a high of $536.58. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
8	Common	Common Stock	2026-06-09	S	D	71	$537.73	25,650	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F9) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $537.28 to a high of $538.04. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
9	Common	Common Stock	2026-06-09	S	D	57	$538.81	25,593	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F10) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $538.45 to a high of $538.98. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
10	Common	Common Stock	2026-06-09	S	D	32	$539.82	25,561	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F11) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $539.64 to a high of $539.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
11	Common	Common Stock	2026-06-09	S	D	16	$540.96	25,545	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.
12	Common	Common Stock	2026-06-09	S	D	48	$542.79	25,497	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F12) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $542.19 to a high of $543.18. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
13	Common	Common Stock	2026-06-09	S	D	48	$543.92	25,449	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026. (F13) Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $543.42 to a high of $544.35. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
14	Common	Common Stock	2026-06-09	S	D	16	$544.95	25,433	D	—	—	(F2) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 5, 2026.