X0508 4 2023-10-20 0001281895 ROCKET PHARMACEUTICALS, INC. RCKT 0001662170 Militello John C/O ROCKET PHARMACEUTICALS, INC. 9 CEDARBROOK DRIVE CRANBURY NJ 08512 true See Remarks false Common Stock 2023-10-20 4 S 0 564 17.062 D 8760 D The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units (RSUs) received by the Reporting Person. The shares of common stock were sold by the Reporting Person pursuant to an exemption to the Lock-Up Agreement in order to pay tax withholding obligations in connection with the vesting of RSUs. Notwithstanding the sales reported on this Form 4, the securities beneficially owned by the reporting person remain subject to the terms of the Lock-Up Agreement. VP, Principal Accounting Officer and Interim Principal Financial Officer /s/ Martin Wilson, as attorney-in-fact for John Militello 2023-10-25