X0609 4 2026-09-15 0 0001699963 Neutron Holdings, Inc. LIME 0001552050 GUGINO ANN B false C/O NEUTRON HOLDINGS, INC. 444 TOWNSEND STREET, FL 1 SAN FRANCISCO CA 94107 0 1 0 0 Chief Financial Officer 0 Common Stock 2026-09-15 4 A 0 110661 0 A 265328 D Common Stock 2026-09-15 4 F 0 6295 30.49 D 259033 D Represents an award of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of Common Stock of the Issuer. The RSUs vest in approximately equal quarterly installments over three years, subject to the Reporting Person's continuous service with the Issuer. Represents shares of Common Stock withheld by the Issuer for payment of taxes on vesting of restricted stock units; not an open market transaction. /s/ Susie Giordano, Attorney-in-Fact 2026-09-17