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Buy Day today: Neutral (46) Mixed market breadth · no major macro event

Insider Trading

Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.

All Recent Buys Recent Sells
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A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).
Ticker Insider Title Date Transaction Price ($) Shares Value ($) SEC Form 4
COST Sullivan John Christopher Executive VP 10/22/2026 Steuer-Abgabe 1,018.21 836 851,224 Form 4
COST Sullivan John Christopher Executive VP 10/22/2026 Steuer-Abgabe 1,018.21 732 745,330 Form 4
COST Sullivan John Christopher Executive VP 10/22/2026 Steuer-Abgabe 1,018.21 975 992,755 Form 4
COST Sullivan John Christopher Executive VP 10/22/2026 Steuer-Abgabe 1,018.21 647 658,782 Form 4
COST Sullivan John Christopher Executive VP 10/22/2026 Steuer-Abgabe 1,018.21 573 583,434 Form 4
COST Sullivan John Christopher Executive VP 10/22/2026 Zuteilung — 4,552 — Form 4
COST Self Adam Webb Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 41 41,747 Form 4
COST Self Adam Webb Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 36 36,656 Form 4
COST Self Adam Webb Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 57 58,038 Form 4
COST Self Adam Webb Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 64 65,165 Form 4
COST Self Adam Webb Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 62 63,129 Form 4
COST Polit Javier Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 549 558,997 Form 4
COST Polit Javier Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 337 343,137 Form 4
COST Polit Javier Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 294 299,354 Form 4
COST Polit Javier Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 391 398,120 Form 4
COST Polit Javier Executive Vice President 10/22/2026 Zuteilung — 4,129 — Form 4
COST Millerchip Gary Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 817 831,878 Form 4
COST Millerchip Gary Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 500 509,105 Form 4
COST Millerchip Gary Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 313 318,700 Form 4
COST Millerchip Gary Executive Vice President 10/22/2026 Zuteilung — 6,140 — Form 4
COST Vachris Roland Michael President and CEO 10/22/2026 Steuer-Abgabe 1,018.21 1,131 1,151,596 Form 4
COST Vachris Roland Michael President and CEO 10/22/2026 Steuer-Abgabe 1,018.21 1,121 1,141,413 Form 4
COST Vachris Roland Michael President and CEO 10/22/2026 Steuer-Abgabe 1,018.21 1,404 1,429,567 Form 4
COST Vachris Roland Michael President and CEO 10/22/2026 Zuteilung — 13,973 — Form 4
COST Wilderotter Mary Agnes Director 10/22/2026 Zuteilung — 266 — Form 4
COST Stanton John W Director 10/22/2026 Zuteilung — 266 — Form 4
COST Raimondo Gina Marie Director 10/22/2026 Zuteilung — 266 — Form 4
COST Raikes Jeffrey S Director 10/22/2026 Zuteilung — 266 — Form 4
COST Klauer James C Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 542 551,870 Form 4
COST Klauer James C Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 443 451,067 Form 4
COST Klauer James C Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 530 539,651 Form 4
COST Klauer James C Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 396 403,211 Form 4
COST Klauer James C Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 191 194,478 Form 4
COST Jewell Sarah Mr Sally Director 10/22/2026 Zuteilung — 266 — Form 4
COST James Hamilton E Director 10/22/2026 Zuteilung — 266 — Form 4
COST George Sarah Catherine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 47 47,856 Form 4
COST George Sarah Catherine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 35 35,637 Form 4
COST George Sarah Catherine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 56 57,020 Form 4
COST George Sarah Catherine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 62 63,129 Form 4
COST George Sarah Catherine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 60 61,093 Form 4
COST Foulkes Helena Director 10/22/2026 Zuteilung — 266 — Form 4
COST Denman Kenneth D Director 10/22/2026 Zuteilung — 266 — Form 4
COST Decker Susan L Director 10/22/2026 Zuteilung — 266 — Form 4
COST Barbre Tiffany Marie Principal Accounting Officer 10/22/2026 Steuer-Abgabe 1,018.21 166 169,023 Form 4
COST Barbre Tiffany Marie Principal Accounting Officer 10/22/2026 Steuer-Abgabe 1,018.21 85 86,548 Form 4
COST Barbre Tiffany Marie Principal Accounting Officer 10/22/2026 Steuer-Abgabe 1,018.21 102 103,857 Form 4
COST Barbre Tiffany Marie Principal Accounting Officer 10/22/2026 Steuer-Abgabe 1,018.21 94 95,712 Form 4
COST Barbre Tiffany Marie Principal Accounting Officer 10/22/2026 Steuer-Abgabe 1,018.21 90 91,639 Form 4
COST Barbre Tiffany Marie Principal Accounting Officer 10/22/2026 Zuteilung — 1,965 — Form 4
COST Adamo Claudine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 109 110,985 Form 4
COST Adamo Claudine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 111 113,021 Form 4
COST Adamo Claudine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 177 180,223 Form 4
COST Adamo Claudine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 198 201,606 Form 4
COST Adamo Claudine Executive Vice President 10/22/2026 Steuer-Abgabe 1,018.21 97 98,766 Form 4
COST Wilcox William Richard Executive Vice President 10/13/2026 Verkauf 958.21 1,100 1,054,026 Form 4
COST Frates Caton Sr. Executive Vice President 09/29/2026 Verkauf 915.93 801 733,660 Form 4
COST Adamo Claudine Executive Vice President 09/29/2026 Verkauf 915.93 2,200 2,015,046 Form 4
COST Wilcox William Richard Executive Vice President 09/10/2026 Steuer-Abgabe 902.38 1,935 1,746,105 Form 4
COST Wilcox William Richard Executive Vice President 09/10/2026 Zuteilung — 4,129 — Form 4
COST Rubanenko Yoram Executive Vice President 09/10/2026 Steuer-Abgabe 902.38 1,696 1,530,436 Form 4

A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).

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