INVESTABOT
Equity Research
XNAS · RETAIL-VARIETY STORES
Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.
Costco Wholesale (COST) had 2 Form 144 pre-sale notices filed on 2026-09-29. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Costco Wholesale (COST) had 1 Form 144 pre-sale notice filed on 2026-06-23. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Costco Wholesale (COST) had 1 Form 144 pre-sale notice filed on 2026-06-12. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Costco Wholesale (COST) had 1 Form 144 pre-sale notice filed on 2026-06-05. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
open-market Form 4 only - grants, exercises, tax withholding excluded
0 buyers - 2 unique sellers · Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| September 29, 2026 | Adamo Claudine | Executive Vice President | SELL | -2,200 | $916 | ~$2.0M |
| September 29, 2026 | Frates Caton | Sr. Executive Vice President | SELL | -800.64 | $916 | ~$0.7M |
| September 10, 2026 | Adamo Claudine | Executive Vice President | TAX_WITHHOLD | -916.69 | $902 | ~$0.8M |
| September 10, 2026 | Adamo Claudine | Executive Vice President | GRANT | 4,129 | — | — |
| September 10, 2026 | Frates Caton | Executive Vice President | TAX_WITHHOLD | -1,654.36 | $902 | ~$1.5M |
| September 10, 2026 | Frates Caton | Executive Vice President | GRANT | 4,552 | — | — |
| September 10, 2026 | Jones Teresa A. | Executive Vice President | TAX_WITHHOLD | -1,458.54 | $902 | ~$1.3M |
| September 10, 2026 | Jones Teresa A. | Executive Vice President | GRANT | 4,129 | — | — |
| September 10, 2026 | Klauer James C | Executive Vice President | TAX_WITHHOLD | -936.12 | $902 | ~$0.8M |
| September 10, 2026 | Klauer James C | Executive Vice President | GRANT | 4,129 | — | — |
| September 10, 2026 | Riel Pierre | Executive Vice President | TAX_WITHHOLD | -1,561.66 | $902 | ~$1.4M |
| September 10, 2026 | Riel Pierre | Executive Vice President | GRANT | 4,552 | — | — |
| September 10, 2026 | Rubanenko Yoram | Executive Vice President | TAX_WITHHOLD | -1,695.95 | $902 | ~$1.5M |
| September 10, 2026 | Rubanenko Yoram | Executive Vice President | GRANT | 4,129 | — | — |
| September 10, 2026 | Wilcox William Richard | Executive Vice President | TAX_WITHHOLD | -1,934.61 | $902 | ~$1.7M |
| September 10, 2026 | Wilcox William Richard | Executive Vice President | GRANT | 4,129 | — | — |
| July 10, 2026 | Raikes Jeffrey S | — | GIFT | -5,249 | — | — |
| June 23, 2026 | Denman Kenneth D | — | SELL | -885 | $957 | ~$0.8M |
| April 1, 2026 | Frates Caton | Executive Vice President | SELL | -700 | $993 | ~$0.7M |
| March 12, 2026 | George Sarah Catherine | Executive Vice President | DISCRETIONARY | -642.13 | $991 | ~$0.6M |
| Date | Insider | Title | Relationship | Shares | Filing |
|---|---|---|---|---|---|
| September 10, 2026 | — | — | — | — | SEC |