Transactions
7
Insider / COSTCO WHOLESALE CORP /NEW
DENMAN KENNETH D
Director at COSTCO WHOLESALE CORP /NEW
- Company
- COSTCO WHOLESALE CORP /NEW
- First filing on record
- October 24, 2025
- Latest trade on record
- June 23, 2026
- SEC filings
- EDGAR ↗
DENMAN KENNETH D, Director at COSTCO WHOLESALE CORP /NEW, has disclosed 7 transactions in COST, QNT, MSI since October 24, 2025: 1 purchase (1 open-market buy) and 2 sales, worth about $1.9M at the reported prices. The latest was filed June 25, 2026, 2 days after the trade.
Open-market buys
1
Sales
2
Avg. disclosure lag
2.4d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months DENMAN KENNETH D made 1 purchase worth $840K and 2 sales worth $1.1M, plus 3 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
DENMAN KENNETH D has traded 3 stocks on record; the largest by dollars is COST.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 6 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 3 | 6,717 | — |
| S | Open-market sale | 2 | 1,319 | $1.1M |
| G | Gift | 1 | 325 | — |
| P | Open-market purchase | 1 | 14,000 | $840K |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 5 | 1 · $840K | 2 · $1.1M |
| 2025 | 2 | 0 | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| COST | Sell S | June 23, 2026 | June 25, 2026 | 2d | 885 | $957 | $847K | Form 4 ↗ | ||
| QNT | Buy P | June 5, 2026 | June 8, 2026 | 3d | 14,000 | $60 | $840K | Form 4 ↗ | ||
| QNT | Other A | June 4, 2026 | June 8, 2026 | 4d | 5,833 | — | — | Form 4 ↗ | ||
| MSI | Other A | May 18, 2026 | May 20, 2026 | 2d | 598 | — | — | Form 4 ↗ | ||
| MSI | Sell S | February 26, 2026 | February 27, 2026 | 1d | 434 | $470 | $204K | Form 4 ↗ | ||
| COST | Other G | December 19, 2025 | December 22, 2025 | 3d | 325 | — | — | Form 4 ↗ | ||
| COST | Other A | October 22, 2025 | October 24, 2025 | 2d | 286 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| June 25, 2026 | Form 4 | 0000909832-26-000053 | 1 | published | EDGAR ↗ |
| June 8, 2026 | Form 4 | 0001628280-26-041622 | 2 | published | EDGAR ↗ |
| May 20, 2026 | Form 4 | 0001254779-26-000005 | 1 | published | EDGAR ↗ |
| February 27, 2026 | Form 4 | 0001254779-26-000002 | 1 | published | EDGAR ↗ |
| December 22, 2025 | Form 4 | 0000909832-25-000171 | 1 | published | EDGAR ↗ |
| October 24, 2025 | Form 4 | 0000909832-25-000111 | 1 | published | EDGAR ↗ |
Other insiders at COSTCO WHOLESALE CORP /NEW
- BROWN GREGORY Q Chairman and CEO 89 rows
- BHATIA MANISH H EVP, Global Operations 46 rows
- Kapur Vimal Chief Executive Officer 33 rows
- MOORE KATHRYN A SVP, HUMAN RESOURCES 19 rows
- Stepniak Michal SrVP & Chief Financial Officer 19 rows
- YAZDI CYNTHIA SVP, COS to the Chairman & CEO 19 rows
- Branderiz Eric Director 17 rows
- Mann Elizabeth Director 17 rows
- WINKLER JASON J EVP and CFO 17 rows
- MAHER KATHERINE A CVP and CAO 15 rows
Everyone on file, with contracts and lobbying under the company's name: COSTCO WHOLESALE CORP /NEW.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 6 | 7 | October 24, 2025 | June 25, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.