COSTCO WHOLESALE CORP /NEW insider transactions

What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78. — In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

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2026-09-30	2026-09-29	Frates Caton	S	800.64	$915.93	Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-29 and its public availability date is 2026-09-30. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0000909832-26-000090 ↗SEC accession 0000909832-26-000088 ↗SEC accession 0000909832-26-000080 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 9 rows, 7 columns

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2026-09-30	2026-09-29	Frates Caton	S	800.64	$915.93	Not reported
2026-09-30	2026-09-29	Adamo Claudine	S	2,200	$915.93	Not reported
2026-09-14	2026-09-10	Wilcox William Richard	A	4,129	$0	Not reported
2026-09-14	2026-09-10	Rubanenko Yoram	A	4,129	$0	Not reported
2026-09-14	2026-09-10	Riel Pierre	A	4,552	$0	Not reported
2026-09-14	2026-09-10	Klauer James C	A	4,129	$0	Not reported
2026-09-14	2026-09-10	Jones Teresa A.	A	4,129	$0	Not reported
2026-09-14	2026-09-10	Frates Caton	A	4,552	$0	Not reported
2026-09-14	2026-09-10	Adamo Claudine	A	4,129	$0	Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 38 displayed rows: Officers and directors in the directory

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Wilderotter Mary Agnes	0001180610	40
Rose Timothy L.	0001564691	19
JAMES HAMILTON E	0001238989	92
RAIKES JEFFREY S	0001193112	1
DENMAN KENNETH D	0001254779	37
Rubanenko Yoram	0001886447	3
Miller Russell D	0001729741	11
POLIT JAVIER	0001852700	6
Adamo Claudine	0001916124	9
BROTMAN JEFFREY H	0001184491	53
Callans Patrick J	0001764273	10
CARSON BENJAMIN SR	0000017940	10
DECKER SUSAN L	0001234655	47
DICERCHIO RICHARD D	0001184492	16
EVANS DANIEL J	0001039950	5
Frates Caton	0001928633	8
GALANTI RICHARD A	0001184493	98
GATES WILLIAM H II	0001228977	4
JELINEK W CRAIG	0001184494	24
Jones Teresa A.	0002031064	4
Klauer James C	0001729360	8
LAZARUS FRANZ E	0001184496	17
LIBENSON RICHARD M	0001187964	17
McKay John D	0001487207	21
MEISENBACH JOHN W	0001187136	112
MILLERCHIP GARY	0001771770	3
MOULTON PAUL G	0001184501	29
Murphy James P.	0001503319	18
PORTERA JOSEPH P	0001184498	29
Riel Pierre	0001916969	3
RUCKELSHAUS JILL S	0001228938	10
SCHUTT DOUGLAS W	0001278890	15
SINEGAL JAMES D	0001184948	74
STANTON JOHN W	0000904858	23
Vachris Roland Michael	0001679566	11
WALKER THOMAS KIRK	0001278889	6
Wilcox William Richard	0002087546	1
ZOOK DENNIS R	0001184499	30

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.