[Form 4] Karyopharm Therapeutics Inc. Insider Trading Activity

Rhea-AI Filing Summary

Karyopharm Therapeutics (KPTI) reported an insider equity award for its President and CEO, Richard Paulson, on 10/15/2025. He received 114,285 restricted stock units at $0 under the company’s 2022 Equity Incentive Plan. The RSUs convert into common stock on a one-for-one basis and vest 100% on December 31, 2026. Following the grant, Paulson’s beneficial ownership totaled 198,331 common shares, held directly. He is also listed as a director.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Paulson Richard A.

(Last) (First) (Middle)

C/O KARYOPHARM THERAPEUTICS INC.

85 WELLS AVENUE

(Street)

NEWTON MA 02459

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Karyopharm Therapeutics Inc. [ KPTI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/15/2025		A		114,285(1)	A	$0	198,331	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the award of restricted stock units ("RSUs") pursuant to the Karyopharm Therapeutics Inc. 2022 Equity Incentive Plan, as amended. RSUs convert into Karyopharm Therapeutics Inc. common stock on a one-for-one basis. The RSUs vest 100% on December 31, 2026.

	/s/ Nancy Smith as Attorney-in-Fact for Richard Paulson	10/16/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Karyopharm (KPTI) report on Form 4?

An award to CEO Richard Paulson of 114,285 RSUs at $0 on 10/15/2025.

When do the KPTI CEO’s RSUs vest?

They vest 100% on December 31, 2026 and convert one-for-one into common stock.

How many KPTI shares does the CEO beneficially own after the grant?

Post-grant beneficial ownership is 198,331 common shares, held directly.

Under which plan were the RSUs granted at KPTI?

The Karyopharm Therapeutics Inc. 2022 Equity Incentive Plan, as amended.

What roles does Richard Paulson hold at KPTI?

He is President and CEO and also serves as a director.

What is the conversion ratio for the RSUs reported by KPTI?

RSUs convert into common stock on a one-for-one basis.