COSTCO WHOLESALE CORP /NEW (COST)
Data as of , from SEC Form 4 filings.
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About COSTCO WHOLESALE CORP /NEW (COST)
COSTCO WHOLESALE CORP /NEW is an SEC registrant, filing under CIK 0000909832, classified as variety stores. We track it alongside the rest of the Consumer Discretionary sector.
COST Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 2 | 3,001 | $2.75M |
| Grant or award | 7 | 29,749 | |
| Tax withholding / forfeiture | 7 | 10,158 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
COST insider transactions (Form 4)
5487 Form 4 filings on record, the earliest from Oct 2, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Caton Frates - Officer | Open-market sale | Common Stock | 800.64 | $915.93 | $733K | |
| Claudine Adamo - Officer | Open-market sale | Common Stock | 2,200 | $915.93 | $2.02M | |
| William Richard Wilcox - Officer | Grant or award | Common Stock | 4,129 footnote F1 | $0.00 footnote F2 | - | |
| William Richard Wilcox - Officer | Tax withholding / forfeiture | Common Stock | 1,935 | $902.38 | $1.75M | |
| ||||||
| Yoram Rubanenko - Officer | Grant or award | Common Stock | 4,129 footnote F1 | $0.00 footnote F2 | - | |
| Yoram Rubanenko - Officer | Tax withholding / forfeiture | Common Stock | 1,696 | $902.38 | $1.53M | |
| ||||||
| Pierre Riel - Officer | Grant or award | Common Stock | 4,552 footnote F1 | $0.00 footnote F2 | - | |
| Pierre Riel - Officer | Tax withholding / forfeiture | Common Stock | 1,562 | $902.38 | $1.41M | |
| ||||||
| James C. Klauer - Officer | Grant or award | Common Stock | 4,129 footnote F1 | $0.00 footnote F2 | - | |
| James C. Klauer - Officer | Tax withholding / forfeiture | Common Stock | 936.12 | $902.38 | $845K | |
| ||||||
| Teresa A. Jones - Officer | Grant or award | Common Stock | 4,129 footnote F1 | $0.00 footnote F2 | - | |
| Teresa A. Jones - Officer | Tax withholding / forfeiture | Common Stock | 1,459 | $902.38 | $1.32M | |
| ||||||
| Caton Frates - Officer | Grant or award | Common Stock | 4,552 footnote F1 | $0.00 footnote F2 | - | |
| Caton Frates - Officer | Tax withholding / forfeiture | Common Stock | 1,654 | $902.38 | $1.49M | |
| ||||||
| Claudine Adamo - Officer | Grant or award | Common Stock | 4,129 footnote F1 | $0.00 footnote F2 | - | |
| Claudine Adamo - Officer | Tax withholding / forfeiture | Common Stock | 916.69 | $902.38 | $827K | |
| ||||||
 Jeffrey S. Raikes - Director | Gift | Common Stock | 5,249 | $0.00 | - | |
| Kenneth D. Denman - Director | Open-market sale | Common Stock | 885 | $957.45 footnote F1 | $847K | |
| ||||||
| Caton Frates - Officer | Open-market sale | Common Stock | 700 | $993.00 | $695K | |
| Sarah Catherine George - Officer | Other | Common Stock | 642.13 footnote F1 | $991.21 | $636K | |
| ||||||
| Gary Millerchip - Officer | Tax withholding / forfeiture | Common Stock | 1,154 footnote F1 | $992.23 | $1.15M | |
| ||||||
| Claudine Adamo - Officer | Open-market sale | Common Stock | 730 | $1,003.02 | $732K | |
| Jeffrey S. Raikes - Director | Gift | Common Stock | 5,115 | $0.00 | - | |
| Teresa A. Jones - Officer | Gift | Common Stock | 300 | $0.00 | - | |
 Susan L. Decker - Director | Open-market sale | Common Stock | 458 | $955.00 | $437K | |
| Gina Marie Raimondo - Director | Grant or award | Common Stock | 215 footnote F1 | $0.00 footnote F2 | - | |
| ||||||
| James C. Klauer - Officer | Open-market sale | Common Stock | 1,500 | $939.00 | $1.41M | |
| Russell D. Miller - Officer | Open-market sale | Common Stock | 1,500 | $916.32 | $1.37M | |
| Javier Polit - Officer | Open-market sale | Common Stock | 558.31 | $862.90 | $482K | |
| Javier Polit - Officer | Open-market sale | Common Stock | 2,049 | $867.21 footnote F1 | $1.78M | |
| ||||||
| Kenneth D. Denman - Director | Gift | Common Stock | 325 | $0.00 | - | |
| Susan L. Decker - Director | Gift | Common Stock | 2,827 | $0.00 | - | |
| Jeffrey S. Raikes - Director | Gift | Common Stock | 4,120 | $0.00 | - | |
| William Richard Wilcox - Officer | Open-market sale | Common Stock | 2,400 | $930.13 | $2.23M | |
| Tiffany Marie Barbre | Tax withholding / forfeiture | Common Stock | 135.4 | $944.68 footnote F3 | $128K | |
| Tiffany Marie Barbre | Tax withholding / forfeiture | Common Stock | 84.6 | $944.68 footnote F3 | $80K | |
| Tiffany Marie Barbre | Open-market sale | Common Stock | 1,239 | $934.62 footnote F4 | $1.16M | |
| Tiffany Marie Barbre | Grant or award | Common Stock | 2,118 footnote F1 | $0.00 footnote F2 | - | |
| Tiffany Marie Barbre | Tax withholding / forfeiture | Common Stock | 113.53 | $944.68 footnote F3 | $107K | |
| Tiffany Marie Barbre | Tax withholding / forfeiture | Common Stock | 90.23 | $944.68 footnote F3 | $85K | |
| Tiffany Marie Barbre | Tax withholding / forfeiture | Common Stock | 118.56 | $944.68 footnote F3 | $112K | |
| ||||||
| Roland Michael Vachris - Officer | Grant or award | Common Stock | 13,834 footnote F1 | $0.00 footnote F2 | - | |
| Roland Michael Vachris - Officer | Tax withholding / forfeiture | Common Stock | 1,493 | $944.68 footnote F3 | $1.41M | |
| Roland Michael Vachris - Officer | Tax withholding / forfeiture | Common Stock | 1,160 | $944.68 footnote F3 | $1.10M | |
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| John Christopher Sullivan - Officer | Tax withholding / forfeiture | Common Stock | 568.89 | $944.68 footnote F3 | $537K | |
| John Christopher Sullivan - Officer | Tax withholding / forfeiture | Common Stock | 584.85 | $944.68 footnote F3 | $552K | |
| John Christopher Sullivan - Officer | Tax withholding / forfeiture | Common Stock | 365.96 | $944.68 footnote F3 | $346K | |
| John Christopher Sullivan - Officer | Grant or award | Common Stock | 4,654 footnote F1 | $0.00 footnote F2 | - | |
| John Christopher Sullivan - Officer | Tax withholding / forfeiture | Common Stock | 421.01 | $944.68 footnote F3 | $398K | |
| John Christopher Sullivan - Officer | Tax withholding / forfeiture | Common Stock | 572.83 | $944.68 footnote F3 | $541K | |
| ||||||
| Javier Polit - Officer | Tax withholding / forfeiture | Common Stock | 336.61 | $944.68 footnote F3 | $318K | |
| Javier Polit - Officer | Grant or award | Common Stock | 4,219 footnote F1 | $0.00 footnote F2 | - | |
| Javier Polit - Officer | Tax withholding / forfeiture | Common Stock | 537.78 | $944.68 footnote F3 | $508K | |
| Javier Polit - Officer | Tax withholding / forfeiture | Common Stock | 293.89 | $944.68 footnote F3 | $278K | |
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Item 2.02, 9.01
Item 8.01, 9.01
Item 2.02, 9.01
Item 8.01, 9.01
Recent COST Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Wilcox William Richard | Officer | 1,100 | $1.05M | View on EDGAR | |
| Adamo Claudine | Officer | 2,200 |
Stock trades in COST disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.
| Member | Type | Traded | Disclosed | Value range | Owner | Days to disclose | Filing |
|---|---|---|---|---|---|---|---|
 Richard McCormickRepublican, GA-07 | Sale |
COST insider trading FAQ
What is the latest insider trade for COST?
COSTCO WHOLESALE CORP /NEW (COST) had 9 insider filings in the last 90 days, with the most recent on 2026-09-30. The full record for COST runs to 87 Form 4 filings, the earliest from 2024-10-02. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying COST stock?
No insider purchases of COST were filed in the last 90 days.
How many insiders are selling COST stock?
2 insider sales of COST were filed in the last 90 days, totaling $2.75M.
Where can I see COST SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects COST Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Consumer Discretionary companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Caton Frates view on EDGAR
- - Claudine Adamo view on EDGAR
- - William Richard Wilcox view on EDGAR
- - Yoram Rubanenko view on EDGAR
- - Pierre Riel view on EDGAR
- - James C. Klauer view on EDGAR
- - Teresa A. Jones view on EDGAR
- - Caton Frates view on EDGAR
- - Claudine Adamo view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Consumer Discretionary
- Where COST's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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