PORTERA JOSEPH P

COST

PORTERA JOSEPH P serves as Executive VP at Costco Wholesale Corporation (COST). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

2 trades

$3.37M

Net Position

Net Seller

$3.37M

Companies Traded

COST

Active Period

Oct 2020 – Sep 2021

2 total trades

Most Recent

Sell COST

Sep 14, 2021 · $1.90M

PORTERA JOSEPH P's Insider Trading at Costco Wholesale Corporation (COST)

Buys

0 · $0.00

Sells

2 · $3.37M

Total Shares Bought

Total Shares Sold

7,437

COST Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Sep 14, 2021↗	Sell	4,150	$458.41	$1.90M	0
Oct 9, 2020↗	Sell	3,287	$445.50	$1.46M	0

Related Insiders

Claudine Adamo

officer: Executive Vice President

COSTSell · Mar 9, 2026

Teresa A. Jones

officer: Executive Vice President

COSTSell · Jan 21, 2026

Teresa A. Jones

Executive Vice President

COSTSell · Jan 21, 2026

DECKER SUSAN L

Director

COSTSell · Jan 16, 2026

DECKER SUSAN L

director

COSTSell · Jan 16, 2026

James C Klauer

officer: Executive Vice President

COSTSell · Jan 14, 2026

James C Klauer

Executive Vice President

COSTSell · Jan 14, 2026

Russell D Miller

officer: Sr. Executive Vice President

COSTSell · Jan 9, 2026

Explore More Insider Trading Data

COST Insider Trading Activity

View all insider trades at Costco Wholesale Corporation

Consumer Defensive Sector Insider Trades

See insider activity across consumer defensive stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity