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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1503802	Karyopharm Therapeutics Inc.	KPTI	Pharmaceutical Preparations (2834)	263931704

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1514291	Michael Mason	C/O Karyopharm Therapeutics Inc. 85 Wells Avenue Newton MA 02459	Evp, Cfo & Treasurer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2022-02-28	88,200	$0.00	141,508	No	4	A	Direct
Common Stock	Disposition	2022-02-28	2,398	$10.24	139,110	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Acquisiton	2022-02-28	111,600	$0.00	111,600	$10.33

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
111,600		2032-02-27	No	4	A	Direct

Footnotes

Represents the award of restricted stock units ("RSUs") pursuant to the Karyopharm Therapeutics Inc. 2013 Stock Incentive Plan (the "Plan"). RSUs convert into Karyopharm Therapeutics Inc. common stock on a one-for-one basis. The RSUs vest in four equal annual installments beginning February 28, 2023.
This transaction was a broker-assisted sale of shares to satisfy the payment of withholding tax liability incurred upon the vesting of restricted stock units and does not represent a discretionary trade by the reporting person.
Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $10.24 to $10.35, inclusive. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
This option was granted on February 28, 2022 pursuant to the Plan. The shares underlying this option vest as to 25% of the shares on February 28, 2023, with the remaining 75% vesting in 36 equal monthly installments thereafter.