Karyopharm Therapeutics (KPTI) - Shares outstanding

Number of shares outstanding as of October 2026 : 28,938,000

According to Karyopharm Therapeutics 's latest financial reports and stock price the company's current number of shares outstanding is 28,938,000. At the end of 2026 the company had 28,938,000 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Karyopharm Therapeutics from 2025 to 2026

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2026	28.93 M	61.63%
2025	17.9 M

Shares Outstanding for similar companies or competitors

Company	Shares Outstanding	differencediff.	Country
Abbott Laboratories ABT	1,740,420,000	5,914.31%	🇺🇸 USA
Merck MRK	2,468,643,335	8,430.80%	🇺🇸 USA
Bristol-Myers Squibb BMY	2,042,000,000	6,956.47%	🇺🇸 USA
Exelixis EXEL	250,808,000	766.71%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Number of shares outstanding for Karyopharm Therapeutics (KPTI)

Number of shares outstanding as of October 2026 : 28,938,000