144 0002029692 XXXXXXXX LIVE 0001514416 Bandwidth Inc. 001-38285 2230 BANDMATE WAY RALEIGH NC 27607 800-808-5150 Agarwal Devesh Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

5000 231750.00 30222760 08/31/2026 NASDAQ Common 08/28/2026 Restricted stock vesting under a registered plan Issuer N 5000 08/28/2026 N/A N Devesh Agarwal

c/o Bandwidth Inc. 2230 Bandmate Way Raleigh NC 27607

Common 05/29/2026 4066 239265.24 Devesh Agarwal

c/o Bandwidth Inc. 2230 Bandmate Way Raleigh NC 27607

Common 08/10/2026 3173 160086.73 The shares covered by this filing are RSUs that vest 08/28/2026. 08/27/2026 /s/ Lorna A. Knick, Attorney-in-Fact for Devesh Agarwal