Costco public offering
$10 original; approximately $1.67 adjusted
The original offer was $10 per share. Costco’s FAQ reports approximately $1.67 after stock splits.
Membership retail · COST
Costco
Costco’s 1985 IPO and later combination with Price Club follow different share histories. This profile tracks the original Costco shares, not Price Club’s separate investment path.
01 / YOUR SCENARIO
Choose your starting point.
Starting price: $1.67 · IPO · Dec 5, 1985 · rounded adjusted reference
1 COST share equivalents per starting share at your ending date. Uses a rounded reference; results are approximate.
Uses documented share adjustments through 2026-09-24. Assumes the share basis remains comparable after that date; other distributions are excluded.
HISTORICAL REFERENCE → YOUR PRICE
CostcoCOST · IPO reference · about $1.67 adjusted
What would those shares be worth?
Your starting price is ready. Add an ending share price, then select Calculate.
Approximate result using Costco’s published rounded, split-adjusted IPO reference. The 1993 Costco exchange was one-for-one. Use a price on or after the January 14, 2000 split; the IPO reference is already adjusted.
Formula: amount ÷ $1.67 × 1 × COST ending price.
Costco investor FAQ ↗Costco March 2000 results and split confirmation ↗Illustrative paper value; no sale or access to a historical investment is assumed. Excludes fees, taxes, cash dividends, warrants and other distributions; fractional shares assumed. An entered ending price is unverified.
THE STORY & THE EVIDENCE
Costco: before the public market.
Costco’s 1985 IPO and later combination with Price Club follow different share histories. This profile tracks the original Costco shares, not Price Club’s separate investment path.
IPO4 sourced milestones1 documented share scenarios
- IPO
- Merger
PriceCostco combination
Each original Costco share exchanged for one PriceCostco share. The 2.13 ratio applied to Price Company shares, not Costco shares.
- Identity
Costco name and COST ticker
PriceCostco became Costco Companies and adopted COST. In August 1999 it became Costco Wholesale Corporation and reincorporated in Washington.
- Share basis
Two-for-one stock split
Costco confirmed split-adjusted trading began on January 14, 2000. The published adjusted IPO reference already incorporates this split.
What the records do not establish
- The reviewed FAQ does not supply a private-round cash price. IPO reference calculations use its rounded, split-adjusted $1.67 price and are approximate.
- Ending dates before January 14, 2000 are not enabled for this already-adjusted reference. Do not apply earlier splits again.
- Price Club holders’ 2.13 exchange ratio is not applied to Costco holders. Dividends and spin-off distributions are excluded.
Research reviewed 2026-09-24. Selected public records, not a complete private cap table. An undisclosed price is left unknown.
Open this company’s sourced data (JSON) ↗
Source documents & filing locations
Costco investor FAQ ↗
December 5, 1985 IPO at $10; approximately $1.67 split-adjusted; one-for-one Costco merger exchange in 1993 and later identity changes.
Costco March 2000 results and split confirmation ↗
March 2, 2000 company release: two-for-one split-adjusted trading began January 14, 2000.