The Filings Report

Costco insider trading

COSTfinancial statementsForm 4 filings on EDGAR179 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at Costco bought $0 of stock in the open market, and 3 sold $4M. Officers and directors accounted for $0 of purchases and $4M of sales. The last reported transaction was an award by Sullivan John Christopher on October 22, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 27, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

COST daily priceSplit-adjusted prices in US dollars

Bought $0Sold $4MAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $1012.05 · H $1021.31 · L $1006.56 · C $1012.28Bought $0 (0)Sold $0 (0)
$875$914$952$991$10302026-08-04: open $945.00, high $950.86, low $937.01, close $947.852026-08-05: open $956.99, high $956.99, low $935.22, close $941.992026-08-06: open $959.55, high $966.14, low $941.78, close $949.152026-08-07: open $943.51, high $949.79, low $937.51, close $947.822026-08-10: open $942.47, high $952.89, low $940.56, close $952.752026-08-11: open $950.05, high $954.90, low $938.09, close $944.322026-08-12: open $937.40, high $951.39, low $935.05, close $949.582026-08-13: open $954.25, high $962.58, low $949.51, close $961.852026-08-14: open $959.99, high $965.36, low $957.75, close $961.062026-08-17: open $954.84, high $956.75, low $949.42, close $953.502026-08-18: open $966.11, high $971.96, low $955.03, close $961.352026-08-19: open $960.00, high $978.70, low $956.00, close $956.992026-08-20: open $931.15, high $944.22, low $925.77, close $933.512026-08-21: open $939.64, high $949.90, low $933.82, close $947.742026-08-24: open $953.01, high $974.49, low $951.39, close $971.402026-08-25: open $965.86, high $969.05, low $959.89, close $960.012026-08-26: open $960.58, high $964.45, low $954.54, close $956.122026-08-27: open $948.27, high $948.85, low $933.25, close $934.662026-08-28: open $938.94, high $953.73, low $937.11, close $945.472026-08-31: open $945.19, high $949.30, low $940.71, close $943.892026-09-01: open $947.35, high $952.10, low $935.93, close $939.962026-09-02: open $938.49, high $938.88, low $920.31, close $928.482026-09-03: open $927.79, high $930.76, low $915.31, close $925.412026-09-04: open $926.09, high $928.04, low $914.54, close $915.742026-09-08: open $912.40, high $915.13, low $906.10, close $910.182026-09-09: open $907.00, high $909.23, low $898.43, close $902.602026-09-10: open $906.62, high $912.10, low $899.00, close $902.382026-09-11: open $905.17, high $907.36, low $900.75, close $904.772026-09-14: open $913.65, high $921.99, low $910.79, close $918.912026-09-15: open $916.92, high $916.92, low $900.25, close $901.352026-09-16: open $901.05, high $902.00, low $892.67, close $893.742026-09-17: open $895.32, high $896.00, low $888.04, close $893.932026-09-18: open $892.43, high $898.40, low $890.55, close $895.312026-09-21: open $891.07, high $899.44, low $885.50, close $898.482026-09-22: open $902.26, high $903.40, low $895.84, close $899.412026-09-23: open $901.31, high $905.59, low $893.36, close $904.702026-09-24: open $908.81, high $909.43, low $895.26, close $896.482026-09-25: open $887.00, high $925.14, low $883.10, close $922.772026-09-28: open $924.39, high $931.09, low $913.00, close $922.922026-09-29: open $916.80, high $925.97, low $912.66, close $924.592026-09-30: open $924.61, high $925.56, low $910.31, close $910.342026-10-01: open $910.87, high $923.50, low $903.78, close $914.942026-10-02: open $921.18, high $921.18, low $909.66, close $920.652026-10-05: open $920.00, high $925.34, low $914.75, close $923.522026-10-06: open $921.32, high $937.04, low $920.78, close $935.682026-10-07: open $940.84, high $948.77, low $937.60, close $942.252026-10-08: open $952.92, high $953.25, low $939.60, close $947.922026-10-09: open $945.00, high $951.29, low $942.53, close $946.922026-10-12: open $949.46, high $960.74, low $946.70, close $959.442026-10-13: open $965.73, high $966.00, low $953.78, close $954.632026-10-14: open $961.35, high $982.64, low $960.00, close $982.002026-10-15: open $998.11, high $1008.37, low $977.24, close $978.012026-10-16: open $982.49, high $993.19, low $980.67, close $989.112026-10-19: open $986.00, high $997.43, low $985.01, close $995.532026-10-20: open $1000.00, high $1003.00, low $991.19, close $994.612026-10-21: open $991.00, high $1000.25, low $988.47, close $998.312026-10-22: open $1007.31, high $1018.86, low $1001.23, close $1018.212026-10-23: open $1016.00, high $1021.45, low $1002.68, close $1003.322026-10-26: open $1001.32, high $1015.14, low $999.51, close $1005.162026-10-27: open $1002.10, high $1002.82, low $989.04, close $992.132026-10-28: open $983.91, high $988.81, low $980.32, close $982.732026-10-29: open $993.83, high $996.42, low $984.55, close $996.082026-10-30: open $1012.05, high $1021.31, low $1006.56, close $1012.28Insider purchases / sales · USD$5M$0−$5M2026-09-29: 0 purchases ($0), 2 sales ($3M)2026-10-13: 0 purchases ($0), 1 sales ($1M)Aug 4Aug 26Sep 17Oct 9Oct 30

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

179 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Oct 22, 2026Sullivan John ChristopherExecutive VPaward4,552$0.00—52,223Oct 27, 2026
Oct 22, 2026Sullivan John ChristopherExecutive VPtax withholding573$1018.21$583K51,650Oct 27, 2026
Oct 22, 2026Sullivan John ChristopherExecutive VPtax withholding647$1018.21$659K51,003Oct 27, 2026
Oct 22, 2026Sullivan John ChristopherExecutive VPtax withholding975$1018.21$993K50,028Oct 27, 2026
Oct 22, 2026Sullivan John ChristopherExecutive VPtax withholding732$1018.21$746K49,296Oct 27, 2026
Oct 22, 2026Sullivan John ChristopherExecutive VPtax withholding836$1018.21$851K48,460Oct 27, 2026
Oct 22, 2026Self Adam WebbExecutive Vice Presidenttax withholding62$1018.21$63K3,468Oct 27, 2026
Oct 22, 2026Self Adam WebbExecutive Vice Presidenttax withholding64$1018.21$65K3,403Oct 27, 2026
Oct 22, 2026Self Adam WebbExecutive Vice Presidenttax withholding57$1018.21$58K3,346Oct 27, 2026
Oct 22, 2026Self Adam WebbExecutive Vice Presidenttax withholding36$1018.21$37K3,310Oct 27, 2026
Oct 22, 2026Self Adam WebbExecutive Vice Presidenttax withholding41$1018.21$41K3,270Oct 27, 2026
Oct 22, 2026Polit JavierExecutive Vice Presidentaward4,129$0.00—14,319Oct 27, 2026
Oct 22, 2026Polit JavierExecutive Vice Presidenttax withholding391$1018.21$398K13,928Oct 27, 2026
Oct 22, 2026Polit JavierExecutive Vice Presidenttax withholding294$1018.21$300K13,633Oct 27, 2026
Oct 22, 2026Polit JavierExecutive Vice Presidenttax withholding337$1018.21$343K13,296Oct 27, 2026
Oct 22, 2026Polit JavierExecutive Vice Presidenttax withholding549$1018.21$559K12,747Oct 27, 2026
Oct 22, 2026Millerchip GaryExecutive Vice Presidentaward6,140$0.00—21,605Oct 26, 2026
Oct 22, 2026Millerchip GaryExecutive Vice Presidenttax withholding313$1018.21$319K21,292Oct 26, 2026
Oct 22, 2026Millerchip GaryExecutive Vice Presidenttax withholding500$1018.21$509K20,792Oct 26, 2026
Oct 22, 2026Millerchip GaryExecutive Vice Presidenttax withholding817$1018.21$832K19,975Oct 26, 2026
Oct 22, 2026Vachris Roland MichaelPresident and CEO, Directoraward13,973$0.00—66,231Oct 26, 2026
Oct 22, 2026Vachris Roland MichaelPresident and CEO, Directortax withholding1,404$1018.21$1M64,827Oct 26, 2026
Oct 22, 2026Vachris Roland MichaelPresident and CEO, Directortax withholding1,121$1018.21$1M63,707Oct 26, 2026
Oct 22, 2026Vachris Roland MichaelPresident and CEO, Directortax withholding1,131$1018.21$1M62,575Oct 26, 2026
Oct 22, 2026Wilderotter Mary AgnesDirectoraward266$0.00—8,527Oct 26, 2026
Oct 22, 2026Stanton John WDirectoraward266$0.00—24,356Oct 26, 2026
Oct 22, 2026Raimondo Gina MarieDirectoraward266$0.00—481Oct 26, 2026
Oct 22, 2026Raikes Jeffrey SDirectoraward266$0.00—6,310Oct 26, 2026
Oct 22, 2026Klauer James CExecutive Vice Presidenttax withholding191$1018.21$194K47,839Oct 26, 2026
Oct 22, 2026Klauer James CExecutive Vice Presidenttax withholding396$1018.21$403K47,443Oct 26, 2026
Oct 22, 2026Klauer James CExecutive Vice Presidenttax withholding530$1018.21$540K46,913Oct 26, 2026
Oct 22, 2026Klauer James CExecutive Vice Presidenttax withholding443$1018.21$451K46,470Oct 26, 2026
Oct 22, 2026Klauer James CExecutive Vice Presidenttax withholding542$1018.21$552K45,929Oct 26, 2026
Oct 22, 2026Jewell Sarah MR SallyDirectoraward266$0.00—3,879Oct 26, 2026
Oct 22, 2026James Hamilton EDirectoraward266$0.00—55,804Oct 26, 2026
Oct 22, 2026George Sarah CatherineExecutive Vice Presidenttax withholding60$1018.21$61K4,068Oct 26, 2026
Oct 22, 2026George Sarah CatherineExecutive Vice Presidenttax withholding62$1018.21$64K4,005Oct 26, 2026
Oct 22, 2026George Sarah CatherineExecutive Vice Presidenttax withholding56$1018.21$57K3,950Oct 26, 2026
Oct 22, 2026George Sarah CatherineExecutive Vice Presidenttax withholding35$1018.21$35K3,915Oct 26, 2026
Oct 22, 2026George Sarah CatherineExecutive Vice Presidenttax withholding47$1018.21$48K3,868Oct 26, 2026
Oct 22, 2026Foulkes HelenaDirectoraward266$0.00—1,353Oct 26, 2026
Oct 22, 2026Denman Kenneth DDirectoraward266$0.00—5,045Oct 26, 2026
Oct 22, 2026Decker Susan LDirectoraward266$0.00—8,798Oct 26, 2026
Oct 22, 2026Barbre Tiffany Marie—award1,965$0.00—7,120Oct 26, 2026
Oct 22, 2026Barbre Tiffany Marie—tax withholding90$1018.21$92K7,030Oct 26, 2026
Oct 22, 2026Barbre Tiffany Marie—tax withholding94$1018.21$96K6,936Oct 26, 2026
Oct 22, 2026Barbre Tiffany Marie—tax withholding102$1018.21$103K6,835Oct 26, 2026
Oct 22, 2026Barbre Tiffany Marie—tax withholding85$1018.21$86K6,750Oct 26, 2026
Oct 22, 2026Barbre Tiffany Marie—tax withholding166$1018.21$169K6,584Oct 26, 2026
Oct 22, 2026Adamo ClaudineExecutive Vice Presidenttax withholding97$1018.21$99K7,037Oct 26, 2026

Who the insiders are

Everyone who reported a transaction since November 1, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Wilcox William RichardExecutive Vice PresidentOct 13, 2026open-market sale3,094—$3M (2)0 of 2
Adamo ClaudineExecutive Vice PresidentOct 22, 2026tax withholding7,037—$3M (2)0 of 2
Polit JavierExecutive Vice PresidentOct 22, 2026award14,319—$2M (2)0 of 2
Frates CatonSr. Executive Vice PresidentSep 29, 2026open-market sale7,912—$1M (2)0 of 2
Klauer James CExecutive Vice PresidentOct 22, 2026tax withholding47,839—$1M (1)0 of 1
Miller Russell DSr. Executive Vice PresidentJan 9, 2026open-market sale2—$1M (1)0 of 1
Denman Kenneth DDirectorOct 22, 2026award5,045—$847K (1)0 of 1
Jones Teresa A.Executive Vice PresidentSep 10, 2026award8,057—$838K (1)0 of 1
Decker Susan LDirectorOct 22, 2026award8,798—$437K (1)0 of 1
Barbre Tiffany Marie—Oct 22, 2026award7,120———
Sullivan John ChristopherExecutive VPOct 22, 2026award52,223———
Millerchip GaryExecutive Vice PresidentOct 22, 2026award21,605———
Vachris Roland MichaelPresident and CEO, DirectorOct 22, 2026award66,231———
Callans Patrick JExecutive Vice PresidentOct 22, 2025tax withholding61,572———
Raikes Jeffrey SDirectorOct 22, 2026award6,310———
George Sarah CatherineExecutive Vice PresidentOct 22, 2026tax withholding4,068———
Self Adam WebbExecutive Vice PresidentOct 22, 2026tax withholding3,468———
Rubanenko YoramExecutive Vice PresidentSep 10, 2026award12,376———
Riel PierreExecutive Vice PresidentSep 10, 2026award15,808———
Stanton John WDirectorOct 22, 2026award24,356———
Wilderotter Mary AgnesDirectorOct 22, 2026award8,527———
Raimondo Gina MarieDirectorOct 22, 2026award481———
Jewell Sarah MR SallyDirectorOct 22, 2026award3,879———
James Hamilton EDirectorOct 22, 2026award55,804———
Foulkes HelenaDirectorOct 22, 2026award1,353———
Jelinek W CraigDirectorDec 19, 2024gift204,365———

Questions

Are Costco insiders buying or selling?

Over the twelve months to November 1, 2026, 9 insiders at Costco sold $15M of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $15M. Only open-market purchases and sales are counted.

Who sold the most Costco stock in the last year?

Wilcox William Richard (Executive Vice President) sold $3M in 2 open-market sales over the twelve months to November 1, 2026.

Do Costco executives sell under 10b5-1 plans?

0 of the 13 open-market sales in the last twelve months (0%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Costco

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.