---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-265542"
form_type: "8-K"
ticker: "COST"
cik: "0000909832"
company_name: "COSTCO WHOLESALE CORP /NEW"
filed_at: "2021-09-03T23:59:59+00:00"
generated_at: "2026-06-29T05:57:34.737287+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Costco EVP Joseph Portera to retire Jan 2022; Yoram Rubananko promoted to EVP

## Summary
- Joseph Portera, EVP Eastern & Canadian Divisions, retiring effective Jan 30, 2022 after 30+ years.
- Yoram Rubananko promoted from SVP/GM Southeast Region to EVP Northeast and Southeast Regions.
- Rubananko's promotion effective Sep 27, 2021; he will report to CEO Craig Jelinek.
- Rubananko has held various operational roles at Costco since 1988.

## SEC filing metadata
- accession: 0001193125-21-265542
- form_type: 8-K
- ticker: COST
- cik: 0000909832
- company_name: COSTCO WHOLESALE CORP /NEW
- filed_at: 2021-09-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/909832/000119312521265542/0001193125-21-265542-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/909832/000119312521265542/d197612d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-265542
- JSON: https://secwatch.observer/filing/0001193125-21-265542.json
- Plain text: https://secwatch.observer/filing/0001193125-21-265542.txt

## Key facts
- Executive change
  Joseph Portera departed as Executive Vice President, Eastern & Canadian Divisions at COSTCO WHOLESALE CORP /NEW.
  - Action: retiring
  - Role: Executive Vice President, Eastern & Canadian Divisions
  source text: Joseph Portera, Executive Vice President, Eastern & Canadian Divisions, is retiring from the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/909832/000119312521265542/0001193125-21-265542-index.htm
- Executive change
  Yoram Rubananko was appointed as Executive Vice President, Northeast and Southeast Regions at COSTCO WHOLESALE CORP /NEW.
  - Action: promoted
  - Role: Executive Vice President, Northeast and Southeast Regions
  source text: Yoram Rubananko, currently Senior Vice President and General Manager, Southeast Region, has been promoted to Executive Vice President, Northeast and Southeast Regions, effective September 27, 2021.
  evidence_url: https://www.sec.gov/Archives/edgar/data/909832/000119312521265542/0001193125-21-265542-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.