Frates Caton
- Shares
- 5.82K
- % company
- <0.01%
- Price
- $993.00
- Value
- $5,774,295
Filed Apr 1, 2026
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NasdaqGS · Consumer Staples · Holders
Costco Wholesale Corp (COST) Institutional Ownership & Insider Trading History
Recent insider purchases and sales for COST from Form 4 filings. Institutional holdings surface here when ownership sources publish.
Section freshness
Price Jun 26, 2:41 PM EDT · Statements May 30, 8:00 PM EDT
Source timingDetailsHide
Data freshness
Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.
Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.
PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 day
Provider checked •
Source: Market data provider
Analystevery 1 hr
Provider checked •
Source: Market data provider
Newsevery 15 min
Latest item •
Source: Market data provider
Ownership read
COST insider sentiment: Net selling.
15 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
COST
Purchases—
Sales139.88K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
—
Institutional data pending
Insider stance
Net selling
$130.42M sold / — bought
Latest filing
Apr 1, 2026
Most recent holder or insider filing date
Filings shown
94
0 holder / 94 insider
- Holder rows
- Pending
- Market data source
- Latest filing
- Apr 1, 2026
- Most recent holder or insider filing date
- Increased / initiated
- Pending
- 0 decreased
- Insider rows
- 94
- Market data source
Recent insider transactions
Costco Wholesale Corp (COST) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
George Sarah Catherine
- Shares
- —
- % company
- —
- Price
- $991.21
- Value
- Not reported
Filed Mar 12, 2026
MILLERCHIP GARY
- Shares
- 15.46K
- % company
- <0.01%
- Price
- $992.23
- Value
- $15,344,837
Filed Mar 11, 2026
Adamo Claudine
- Shares
- 6.12K
- % company
- <0.01%
- Price
- $1,003
- Value
- $6,139,492
Filed Mar 9, 2026
Jones Teresa A.
- Shares
- 3.93K
- % company
- <0.01%
- Price
- Non-cash
- Value
- Non-cash
Filed Jan 27, 2026
RAIKES JEFFREY S
- Shares
- 11.29K
- % company
- <0.01%
- Price
- Non-cash
- Value
- Non-cash
Filed Jan 27, 2026
Jones Teresa A.
- Shares
- 4.23K
- % company
- <0.01%
- Price
- $986.26
- Value
- $4,169,893
Filed Jan 21, 2026
Raimondo Gina Marie
- Shares
- 215
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Jan 16, 2026
DECKER SUSAN L
- Shares
- 8.53K
- % company
- <0.01%
- Price
- $955.00
- Value
- $8,148,060
Filed Jan 16, 2026
Klauer James C
- Shares
- 44.84K
- % company
- 0.01%
- Price
- $939.00
- Value
- $42,101,943
Filed Jan 14, 2026
Miller Russell D
- Shares
- 8.24K
- % company
- <0.01%
- Price
- $916.32
- Value
- $7,550,477
Filed Jan 9, 2026
POLIT JAVIER
- Shares
- 10.19K
- % company
- <0.01%
- Price
- $862.90
- Value
- $8,792,900
Filed Dec 30, 2025
POLIT JAVIER
- Shares
- 10.75K
- % company
- <0.01%
- Price
- $867.21
- Value
- $9,320,724
Filed Dec 29, 2025
DENMAN KENNETH D
- Shares
- 5.66K
- % company
- <0.01%
- Price
- Non-cash
- Value
- Non-cash
Filed Dec 19, 2025
DECKER SUSAN L
- Shares
- 8.99K
- % company
- <0.01%
- Price
- Non-cash
- Value
- Non-cash
Filed Dec 15, 2025
RAIKES JEFFREY S
- Shares
- 16.41K
- % company
- <0.01%
- Price
- Non-cash
- Value
- Non-cash
Filed Nov 10, 2025
Wilcox William Richard
- Shares
- 2.00K
- % company
- <0.01%
- Price
- $930.13
- Value
- $1,860,260
Filed Nov 7, 2025
Barbre Tiffany Marie
- Shares
- 5.16K
- % company
- <0.01%
- Price
- $934.62
- Value
- $4,817,968
Filed Oct 24, 2025
Adamo Claudine
- Shares
- 6.85K
- % company
- <0.01%
- Price
- $935.68
- Value
- $6,410,344
Filed Oct 24, 2025
STANTON JOHN W
- Shares
- 24.09K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Oct 22, 2025
Barbre Tiffany Marie
- Shares
- 6.39K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,041,229
Filed Oct 22, 2025
Barbre Tiffany Marie
- Shares
- 6.48K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,120,582
Filed Oct 22, 2025
Barbre Tiffany Marie
- Shares
- 6.62K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,249,058
Filed Oct 22, 2025
Barbre Tiffany Marie
- Shares
- 6.73K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,360,530
Filed Oct 22, 2025
Barbre Tiffany Marie
- Shares
- 6.82K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,446,496
Filed Oct 22, 2025
Barbre Tiffany Marie
- Shares
- 6.94K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed Oct 22, 2025
Frates Caton
- Shares
- 6.51K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,154,590
Filed Oct 22, 2025
Frates Caton
- Shares
- 7.22K
- % company
- <0.01%
- Price
- $944.68
- Value
- $6,821,534
Filed Oct 22, 2025
Frates Caton
- Shares
- 8.12K
- % company
- <0.01%
- Price
- $944.68
- Value
- $7,672,691
Filed Oct 22, 2025
Frates Caton
- Shares
- 8.88K
- % company
- <0.01%
- Price
- $944.68
- Value
- $8,388,758
Filed Oct 22, 2025
Frates Caton
- Shares
- 9.13K
- % company
- <0.01%
- Price
- $944.68
- Value
- $8,623,039
Filed Oct 22, 2025
Adamo Claudine
- Shares
- 9.55K
- % company
- <0.01%
- Price
- $944.68
- Value
- $9,022,639
Filed Oct 22, 2025
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | Frates Caton | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 5.82K | $993.00 | $5,774,295 | Apr 1, 2026 |
| 2 | George Sarah Catherine | — | IProvider-supplied Form 4 action code. Review the original filing before making a trading judgment. | — | $991.21 | Not reported | Mar 12, 2026 |
| 3 | MILLERCHIP GARY | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 15.46K | $992.23 | $15,344,837 | Mar 11, 2026 |
| 4 | Adamo Claudine | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 6.12K | $1,003 | $6,139,492 | Mar 9, 2026 |
| 5 | Jones Teresa A. | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale. | 3.93K | Non-cash | Non-cash | Jan 27, 2026 |
| 6 | RAIKES JEFFREY S | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale. | 11.29K | Non-cash | Non-cash | Jan 27, 2026 |
| 7 | Jones Teresa A. | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 4.23K | $986.26 | $4,169,893 | Jan 21, 2026 |
| 8 | Raimondo Gina Marie | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 215 | No cash value | No cash value | Jan 16, 2026 |
| 9 | DECKER SUSAN L | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 8.53K | $955.00 | $8,148,060 | Jan 16, 2026 |
| 10 | Klauer James C | 0.01% | SaleOpen-market or direct sale reported on Form 4. | 44.84K | $939.00 | $42,101,943 | Jan 14, 2026 |
| 11 | Miller Russell D | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 8.24K | $916.32 | $7,550,477 | Jan 9, 2026 |
| 12 | POLIT JAVIER | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.19K | $862.90 | $8,792,900 | Dec 30, 2025 |
| 13 | POLIT JAVIER | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.75K | $867.21 | $9,320,724 | Dec 29, 2025 |
| 14 | DENMAN KENNETH D | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale. | 5.66K | Non-cash | Non-cash | Dec 19, 2025 |
| 15 | DECKER SUSAN L | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale. | 8.99K | Non-cash | Non-cash | Dec 15, 2025 |
| 16 | RAIKES JEFFREY S | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale. | 16.41K | Non-cash | Non-cash | Nov 10, 2025 |
| 17 | Wilcox William Richard | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 2.00K | $930.13 | $1,860,260 | Nov 7, 2025 |
| 18 | Barbre Tiffany Marie | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 5.16K | $934.62 | $4,817,968 | Oct 24, 2025 |
| 19 | Adamo Claudine | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 6.85K | $935.68 | $6,410,344 | Oct 24, 2025 |
| 20 | STANTON JOHN W | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 24.09K | No cash value | No cash value | Oct 22, 2025 |
| 21 | Barbre Tiffany Marie | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 6.39K | $944.68 | $6,041,229 | Oct 22, 2025 |
| 22 | Barbre Tiffany Marie | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 6.48K | $944.68 | $6,120,582 | Oct 22, 2025 |
| 23 | Barbre Tiffany Marie | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 6.62K | $944.68 | $6,249,058 | Oct 22, 2025 |
| 24 | Barbre Tiffany Marie | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 6.73K | $944.68 | $6,360,530 | Oct 22, 2025 |
| 25 | Barbre Tiffany Marie | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 6.82K | $944.68 | $6,446,496 | Oct 22, 2025 |
| 26 | Barbre Tiffany Marie | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 6.94K | No cash value | No cash value | Oct 22, 2025 |
| 27 | Frates Caton | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 6.51K | $944.68 | $6,154,590 | Oct 22, 2025 |
| 28 | Frates Caton | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 7.22K | $944.68 | $6,821,534 | Oct 22, 2025 |
| 29 | Frates Caton | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 8.12K | $944.68 | $7,672,691 | Oct 22, 2025 |
| 30 | Frates Caton | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 8.88K | $944.68 | $8,388,758 | Oct 22, 2025 |
| 31 | Frates Caton | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 9.13K | $944.68 | $8,623,039 | Oct 22, 2025 |
| 32 | Adamo Claudine | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 9.55K | $944.68 | $9,022,639 | Oct 22, 2025 |
Showing 32 of 94 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest COST shareholders?
Costco Wholesale Corp (COST) institutional holders are ranked by reported share count when ownership data publishes filing rows.
What is institutional ownership of COST?
Costco Wholesale Corp (COST) institutional ownership appears when filing-based market data returns holder rows. TECHi does not fill unavailable ownership fields with placeholder shareholders.
Where can I see Costco Wholesale Corp insider transactions?
Costco Wholesale Corp (COST) has 94 Form 4 insider transactions on file, most recently on Apr 1, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.
Are COST insiders buying or selling?
Recent COST insider activity reads Net selling: 15 sales and 0 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.
Who is the most active COST insider?
Callans Patrick J is the most active COST insider by absolute share movement, with 430,607 shares moving across the filing history. Review the action labels before treating that activity as buying or selling.