Karyopharm Closes $165 Million Private Placement

Karyopharm Therapeutics Inc. (Nasdaq: KPTI), a commercial-stage pharmaceutical company pioneering novel cancer therapies, today announced that it has entered into a securities purchase agreement with certain institutional investors for a private placement that is expected to result in gross proceeds of approximately $165 million before deducting any offering related expenses. The private placement was led by Avidity Partners, with participation by existing stockholders and new investors including Adage Capital Partners LP, Armistice Capital, Healthcor Management LP, Heights Capital Management, Marshall Wace, Rubric Capital Management LP, SilverArc Capital and Surveyor Capital (a Citadel company).

In the private placement, the Company agreed to sell 31,791,908 shares of common stock at a price of $5.19 per share and to issue accompanying warrants to purchase 9,537,563 shares of common stock with an exercise price of $6.36 per share. The warrants will be exercisable at any time after they are issued and prior to the fifth anniversary of the closing date. The private placement is expected to close on or about December 7, 2022, subject to the satisfaction of customary closing conditions. The private placement is being conducted in accordance with applicable Nasdaq rules and was priced to satisfy the “Minimum Price” requirement (as defined in the Nasdaq rules).

Jefferies, Piper Sandler and Barclays are acting as lead placement agents. Baird and H.C. Wainwright & Co. are acting as co-placement agents in the private placement.

Karyopharm expects to use the proceeds from the private placement, together with its existing cash, cash equivalents and investments, for the advancement of the Company’s clinical development programs with selinexor and eltanexor as well as for working capital and other general corporate purposes.

The securities to be sold in the private placement have not been registered under the Securities Act of 1933, as amended (Securities Act), or any state or other applicable jurisdiction’s securities laws, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state or other jurisdictions’ securities laws. The Company has agreed to file a registration statement with the U.S. Securities and Exchange Commission registering the resale of the shares of common stock and the shares of common stock issuable upon the exercise of the warrants issued in the private placement no later than the 30th day after the closing of the private placement.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any offer, solicitation or sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful. Any offering of the securities under the resale registration statement will only be made by means of a prospectus.

About Karyopharm Therapeutics

Karyopharm Therapeutics Inc. (Nasdaq: KPTI) is a commercial-stage pharmaceutical company pioneering novel cancer therapies. Since its founding, Karyopharm has been an industry leader in oral Selective Inhibitor of Nuclear Export (SINE) compound technology, which was developed to address a fundamental mechanism of oncogenesis: nuclear export dysregulation. Karyopharm’s lead SINE compound and first-in-class, oral exportin 1 (XPO1) inhibitor, XPOVIO® (selinexor), is approved in the U.S. and marketed by the Company in three oncology indications and has received regulatory approvals in various indications in a growing number of ex-U.S. territories and countries, including Europe and the United Kingdom (as NEXPOVIO®) and China. Karyopharm has a focused pipeline targeting multiple high unmet need cancer indications, including in multiple myeloma, endometrial cancer, myelodysplastic syndromes and myelofibrosis.