Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13G
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UNDER THE SECURITIES EXCHANGE ACT OF 1934
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Karyopharm Therapeutics Inc. (Name of Issuer) |
Common Stock, no par value (Title of Class of Securities) |
48576U205 (CUSIP Number) |
10/10/2025 (Date of Event Which Requires Filing of this Statement) |
| Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |
 Rule 13d-1(b)
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 Rule 13d-1(c)
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| Rule 13d-1(d)
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SCHEDULE 13G
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| CUSIP No. | 48576U205 |
| 1 | Names of Reporting Persons
Opaleye Management Inc. | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
MASSACHUSETTS
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
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| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,569,002.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
9.48 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA, CO |
SCHEDULE 13G
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| CUSIP No. | 48576U205 |
| 1 | Names of Reporting Persons
Opaleye, L.P. | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
MASSACHUSETTS
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,569,002.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
9.48 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
PN |
Comment for Type of Reporting Person: Based on a statement in the Current Report on Form 8-K, as filed by Karyopharm Therapeutics Inc. with the Securities and Exchange Commission on October 8, 2025, that the issuer expects to have 15,926,939 shares of common stock outstanding following consummation of the transactions described therein.
SCHEDULE 13G
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| CUSIP No. | 48576U205 |
| 1 | Names of Reporting Persons
James Silverman | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,569,002.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
9.48 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13G
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| Item 1. | ||
| (a) | Name of issuer:
Karyopharm Therapeutics Inc. | |
| (b) | Address of issuer's principal executive offices:
85 WELLS AVENUE, SECOND FLOOR, NEWTON, MA, 02459 | |
| Item 2. | ||
| (a) | Name of person filing:
Opaleye Management Inc. Opaleye, L.P. James Silverman This statement is filed by (i) Opaleye Management Inc. (the "Adviser"), (ii) Opaleye, L.P. (the "Fund") and (iii) James Silverman with respect to shares directly held by the Fund. The Adviser serves as investment adviser to the Fund. Mr. Silverman exercises control over the Adviser. The filing of this statement should not be construed as an admission that any of the foregoing persons is, for the purposes of Section 13 of the Securities Exchange Act, the beneficial owner of the shares reported herein. | |
| (b) | Address or principal business office or, if none, residence:
One Boston Place, 26th Floor, Boston, MA 02108 | |
| (c) | Citizenship:
Opaleye Management Inc. - Massachusetts Opaleye, L.P. - Massachusetts James Silverman - USA | |
| (d) | Title of class of securities:
Common Stock, no par value | |
| (e) | CUSIP No.:
48576U205 | |
| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: | |
| (a) | Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
| |
| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
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| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
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| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
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| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
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| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
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| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
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| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
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| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
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| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution: | |
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
| |
| Item 4. | Ownership | |
| (a) | Amount beneficially owned:
As of October 10, 2025, the Fund beneficially owned an aggregate of 1,569,002 shares of Common Stock of the Issuer, including 619,089 issuable upon exercise of warrants (the "Warrants") that are immediately exercisable. Beneficial ownership percentages reported herein are based on a statement in the Current Report on Form 8-K, as filed by Karyopharm Therapeutics Inc. with the Securities and Exchange Commission on October 8, 2025, that the issuer expects to have 15,926,939 shares of common stock outstanding following consummation of the transactions described therein. | |
| (b) | Percent of class:
9.48 % %
| |
| (c) | Number of shares as to which the person has:
| |
| (i) Sole power to vote or to direct the vote:
0 | ||
| (ii) Shared power to vote or to direct the vote:
1,569,002.00 | ||
| (iii) Sole power to dispose or to direct the disposition of:
0 | ||
| (iv) Shared power to dispose or to direct the disposition of:
1,569,002.00 | ||
| Item 5. | Ownership of 5 Percent or Less of a Class. | |
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. | |
Not Applicable
| ||
| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. | |
Not Applicable
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| Item 8. | Identification and Classification of Members of the Group. | |
Not Applicable
| ||
| Item 9. | Notice of Dissolution of Group. | |
Not Applicable
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| Item 10. | Certifications: |
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. |
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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Exhibit Information
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Exhibit 99.1 Joint Filing Agreement by and among the reporting persons |