CURIS INC — Director's Dealing 2025

May 22, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CURIS INC (CRIS)
CIK: 0001108205
Period of Report: 2025-05-20

Reporting Person: Duvall Diantha (CFO)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-20	Employee stock option (right to buy)	$3.13	A	135000	Acquired	2035-01-27	Common Stock (135000)	Direct

Footnotes

F1: This option grant, as disclosed in Curis Inc.'s 2025 proxy statement, was approved by the Board of Directors of Curis, Inc. on January 28, 2025, contingent upon shareholder approval of Curis's Amendment No. 1 to the Fifth Amended and Restated 2010 Stock Incentive Plan to increase the number of shares authorized for issuance thereunder; and further provided that such option would not be exercisable and no common stock would be issued thereunder, if Amendment No. 1 to the Fifth Amended and Restated 2010 Plan was not approved by Curis's shareholders. On May 20, 2025, at the 2025 annual meeting of shareholders, Curis's shareholders approved Amendment No. 1 to the Fifth Amended and Restated 2010 Plan.

F2: The option grant described in this Form 4 filing vests as to 25% of the original shares on January 28, 2026 and as to an additional 6.25% of the original shares each successive quarter and until January 28, 2029.